WO2018200857A1 - Matériau polymère à base de cyclodextrine poreux greffé et procédé de fabrication et d'utilisation de celui-ci - Google Patents

Matériau polymère à base de cyclodextrine poreux greffé et procédé de fabrication et d'utilisation de celui-ci Download PDF

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Publication number
WO2018200857A1
WO2018200857A1 PCT/US2018/029628 US2018029628W WO2018200857A1 WO 2018200857 A1 WO2018200857 A1 WO 2018200857A1 US 2018029628 W US2018029628 W US 2018029628W WO 2018200857 A1 WO2018200857 A1 WO 2018200857A1
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Prior art keywords
polymeric material
porous polymeric
supported porous
tfn
supported
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PCT/US2018/029628
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English (en)
Inventor
William Dichtel
Damian Helbling
Chenjun LI
Diego Alzate-Sanchez
Jason M. SPRUELL
Yuhan Ling
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Cornell University
Cyclopure, Inc.
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Publication of WO2018200857A1 publication Critical patent/WO2018200857A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
    • C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
    • C08B37/0012—Cyclodextrin [CD], e.g. cycle with 6 units (alpha), with 7 units (beta) and with 8 units (gamma), large-ring cyclodextrin or cycloamylose with 9 units or more; Derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28028—Particles immobilised within fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/2803—Sorbents comprising a binder, e.g. for forming aggregated, agglomerated or granulated products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
    • B01J20/3204—Inorganic carriers, supports or substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
    • B01J20/3206—Organic carriers, supports or substrates
    • B01J20/3208—Polymeric carriers, supports or substrates
    • B01J20/321—Polymeric carriers, supports or substrates consisting of a polymer obtained by reactions involving only carbon to carbon unsaturated bonds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
    • B01J20/3206—Organic carriers, supports or substrates
    • B01J20/3208—Polymeric carriers, supports or substrates
    • B01J20/3212—Polymeric carriers, supports or substrates consisting of a polymer obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
    • B01J20/3268—Macromolecular compounds
    • B01J20/3272—Polymers obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds
    • B01J20/3274—Proteins, nucleic acids, polysaccharides, antibodies or antigens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
    • B01J20/3268—Macromolecular compounds
    • B01J20/3278—Polymers being grafted on the carrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
    • B01J20/3268—Macromolecular compounds
    • B01J20/328—Polymers on the carrier being further modified
    • B01J20/3282—Crosslinked polymers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
    • C08L5/16—Cyclodextrin; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds

Definitions

  • the present disclosure relates to fluid purification with porous, high surface area cyclodextrin polymeric materials grafted or bonded to a support.
  • active materials incorporated into fabrics for various purposes.
  • active materials incorporated into a sheet form have useful flow properties for removing contaminants from liquid or vapor streams.
  • Active materials incorporated into fabrics e.g., clothing
  • fabrics can be used to protect the wearer against potentially dangerous contaminants, or can be used to absorb odors (e.g., for outdoors, military, sanitary or medical applications).
  • VOCs Volatile organic compounds
  • ADCs Activated carbons
  • AC adsorption selectivities for processes employing ACs require empirical screening for each process design, precluding rational design and improvement. Furthermore, regenerating spent AC is energy intensive (heating to 500-900 °C or other energy intensive procedures) and does not restore full performance. AC also has a slow pollutant uptake rate, achieving its uptake equilibrium in hours to days, such that more rapid contaminant removal requires excess sorbent. Finally, AC can perform poorly for many emerging contaminants, particularly those that are relatively hydrophilic.
  • ⁇ -CD polymeric cyclodextrin materials produced from insoluble polymers of ⁇ -cyclodextrin ( ⁇ -CD), which are toroidal macrocycles comprised of seven glucose units whose internal cavities are capable of forming host-guest interactions with thousands of organic compounds.
  • ⁇ -CD is an inexpensive and sustainably produced monomer derived from cornstarch that is used extensively to formulate and stabilize pharmaceuticals, flavorants, and fragrances, as well as within chiral chromatography stationary phases.
  • Insoluble ⁇ -CD polymers have been formed by crosslinking with epichlorohydrin and other reactive compounds that feature well defined binding sites and high association constants. Insoluble ⁇ -CD polymers crosslinked with epichlorohydrin have been investigated as alternatives to AC for water purification, but their low surface areas result in inferior sorbent performance relative to ACs.
  • the present disclosure provides porous, high surface area cyclodextrin polymeric materials grafted or bonded (or otherwise affixed) by various means (chemically, adhesively, and/or mechanically) to a solid substrate or support of known size and shape.
  • the supported cyclodextrin-based absorbents of the present disclosure can be incorporated into durable forms which provide performance characteristics similar to and in some aspects superior to the unsupported adsorbent particles.
  • the fluid flow characteristics of the supported adsorbent particles of the present disclosure are superior to those of the unsupported particles, and the absorbent particles of the present disclosure can be readily be incorporated in to useful forms (e.g., textiles used in clothing, fluid filters, medical or sanitary fabrics, etc.).
  • the present disclosure also provides methods of making and using these materials.
  • the present disclosure provides a supported porous polymeric material comprising porous particles affixed to a solid substrate, wherein said porous particles comprise a plurality of cyclodextrin moieties crosslinked with one or more aryl moieties, and wherein the supported porous polymeric material has one or more performance characteristics which are nearly the same as or superior to the performance characteristics of the unsupported adsorbent of the same composition, for example which are at least about 50% of the same performance characteristics of unsupported porous particles of the same composition.
  • the performance characteristic is pollutant uptake.
  • the performance characteristic is equilibrium adsorption capacity.
  • the performance characteristic is rate of attaining equilibrium adsorption.
  • the performance characteristic is specific permeability. In some embodiments, any of the performance characteristics recited above may be about the same or greater than the unsupported porous particles of the same composition.
  • the aryl moiety is TFN.
  • the support is microcrystalline cellulose (CMC). In some embodiments, the supported porous polymeric material is CD-TFN@CMC.
  • the cyclodextrin polymer of the present disclosure is grafted or bonded onto a substrate of known size and shape.
  • the substrate is cellulose.
  • the cellulose is microcrystalline cellulose.
  • the size and morphology of the microcrystalline cellulose are tuned to optimize the desired properties of the grafted or bonded cyclodextrin polymer.
  • one of the desired properties is managing a pressure drop.
  • managing the pressure drop to acceptable levels is accomplished by tuning the particle size of the adsorbent.
  • tuning the particle size and morphology leads to grafted or bonded ⁇ -cyclodextrin polymer (e.g., CD-TFN, where "CD” refers to cyclodextrin, and TFN refers to the crosslinker "tetrafluoroterephthalonitrile" on microcrystalline cellulose (e.g., CD- TFN@cellulose also referred to as CD-TFN@CMC) with improved flow characteristics.
  • CD- TFN@cellulose also referred to as CD-TFN@CMC
  • the improved flow characteristics of CD-TFN@cellulose material result from having a large particle size with a narrow particle size distribution.
  • a large particle size is defined as particles tens of microns or larger.
  • the improved flow characteristics enable more effective removal of pollutants, contaminants, and/or other unwanted compounds from liquids including but not limited to drinking and wastewater.
  • the present disclosure provides a porous, high surface area cyclodextrin polymeric material. These materials may also be referred to herein as polymers, polymeric materials, or porous polymeric materials. In some embodiments, the high surface area cyclodextrin polymeric material may be non-porous. In various embodiments, the polymeric materials of the present disclosure comprise a plurality of cyclodextrin moieties and microcrystalline cellulose crosslinked by one or more aryl moieties.
  • the porous polymeric material does not have an aliphatic ether bond to a crosslinking moiety.
  • the molar ratio of cyclodextrin moieties to aryl moieties ranges from about 1 : 1 to about 1:X, wherein X is three times the average number of glucose subunits in the cyclodextrin moieties.
  • the molar ratio of microcrystalline cellulose to aryl moieties ranges from about 1 : 1 to about 1:X, wherein X is three times the average number of glucose subunits in the microcrystalline cellulose.
  • the polymeric materials of the present disclosure comprise a plurality of cyclodextrin moieties and a substrate (e.g., a polymeric or inorganic support such as silica or alumina as described herein) functionalized with hydroxyl groups such that the cyclodextrin moieties and support are crosslinked by one or more aryl moieties.
  • a substrate e.g., a polymeric or inorganic support such as silica or alumina as described herein
  • the polymeric or inorganic supports are functionalized with reactive groups other than hydroxyl (e.g., carboxylic acids, acid chlorides, anhydrides or other activated forms of carboxylic acids known in the art; isocyanates, epoxides, amines, etc.) that can react with the polymeric materials of the present disclosure (which themselves may be functionalized with functional groups that can react with the substrate material), thereby grafting to the polymeric materials onto the substrate.
  • the polymeric materials of the present disclosure can be adhered to the substrate using a binder as described herein. Regardless of bonding or grafting mechanism, the supported polymeric materials of the present disclosure exhibit absorption characteristics that are substantially the same as the unsupported material. That is, the method and materials used to affix the polymeric materials of the present disclosure to the substrate do not substantially occlude or otherwise interfere with the absorption characteristics of the polymeric materials of the present disclosure.
  • the cyclodextrin moieties comprise ⁇ -cyclodextrin. In various embodiments, the cyclodextrin moieties comprise ⁇ -cyclodextrin and the ratio of ⁇ - cyclodextrin moieties to crosslinking moieties is 1 : 1 to 1 :21.
  • the porous polymeric material is mesoporous. In various embodiments, the porous polymeric material has a Brunauer-Emmett-Teller (BET) surface area of 1 m 2 /g to 2000 m 2 /g.
  • BET Brunauer-Emmett-Teller
  • the present disclosure is directed to compositions comprising any of the porous or non-porous polymeric materials described herein.
  • the composition comprises any of the porous or non-porous polymeric materials described herein covalently bonded to a support material, wherein the support material can be any support as described herein, including cellulosic materials, such as cotton, in any form, such as fibers, fabrics, etc.
  • the composition comprises any of the porous or non-porous polymeric materials described herein adhesively bonded to a support material, wherein the support material can be any support as described herein, including cellulosic material, such as cotton, in any form, such as fibers, fabrics, etc.
  • the present disclosure provides a method of purifying an aqueous sample comprising one or more organic pollutants, comprising contacting the aqueous sample with the supported porous polymeric material of the present disclosure, such that at least 50% to at least 99% of the one or more organic pollutants are removed from the aqueous sample.
  • the one or more cyclodextrin moieties are ⁇ -cyclodextrin moieties.
  • the supported porous polymeric material is CD-TFN@CMC.
  • the aqueous sample is contacted with the P-CDP-substrate complex under static conditions for an incubation period and after the incubation period the aqueous sample is separated from the porous polymeric material.
  • the aqueous sample is drinking water, wastewater, ground water, aqueous extracts from contaminated soils, or landfill leachates.
  • the present disclosure provides a method of determining the presence or absence of compounds in a sample, comprising: a) contacting the sample with the supported porous polymeric material of the present disclosure for an incubation period; b) isolating the supported porous polymeric material from a) from the sample; and c) heating the supported porous polymeric material from b) or contacting the supported porous polymeric material from b) with a solvent such that at least part of the compounds are then released from the supported porous polymeric material; and d) determining the presence or absence of any compounds, wherein the presence of one or more compounds correlates to the presence of the one or more compounds in the sample, or isolating the compounds.
  • the supported porous polymeric material is CD-TFN@CMC.
  • the compounds are organic compounds.
  • the present disclosure is directed to methods of purifying a fluid sample comprising one or more unwanted compounds, wherein the sample is a fluid such as water or other liquids, air or other gases, by adsorbing the unwanted compounds with the porous polymeric material, typically in an amount of at least about 50% by weight of the total amount of said unwanted compounds. In other various embodiments, it is sufficient to remove at least 10% by weight of the total amount of said unwanted compounds. In other various embodiments, specific types of unwanted compounds are contaminants and pollutants, typically organic pollutants.
  • the present disclosure is directed to methods of determining the presence or absence of unwanted compounds, such as pollutants, in a fluid sample as described herein, by contacting any of the porous polymeric materials herein with the fluid, adsorbing the compounds with the porous polymeric material, separating the porous polymeric material from the fluid sample, then releasing the compounds adsorbed on the porous polymeric material, for example by heating or solvent extraction, then determining the presence or absence, and optionally the amount, of compound release from the porous polymeric material by detection methods (e.g., spectroscopic methods).
  • detection methods e.g., spectroscopic methods.
  • the present disclosure is directed to methods of removing compounds from a fluid (same as described herein) by contacting any of the porous polymeric materials herein with the fluid, adsorbing the compounds with the porous polymeric material, separating the porous polymeric material from the fluid sample, then releasing the compounds adsorbed on the porous polymeric material, for example by heating or solvent extraction, and optionally isolating the compounds released from the porous polymeric material.
  • said removing is carried out to eliminate the adsorbed species from the fluid (gas or liquid), thereby purifying the fluid.
  • said removing is carried out to isolate and purify, or recover the adsorbed species from the fluid.
  • the present disclosure provides an article of manufacture comprising a supported porous polymeric material or the present disclosure.
  • the article of manufacture is protective equipment (including protective clothing or respiratory devices).
  • the article of manufacture is clothing, for example outdoors, exercise, or medical clothing designed to adsorb odors or biological and environmental contaminants.
  • the article of manufacture is a filtration medium.
  • the article of manufacture is an extraction device.
  • the extraction device is a solid-phase extraction device capable of adsorbing polar and semi-polar organic molecules.
  • FIG. 1 is a schematic for the synthesis of CD-TFN@cellulose.
  • FIG. 2 is an FUR of CD-TFN@cellulose and cellulose.
  • FIG. 3 shows A) A SEM image of unmodified cellulose and B) A SEM image of CD-TFN@cellulose.
  • FIG. 4 shows A) Time-dependent bisphenol A (0.1 mM) uptake of the CD- TFN@cellulose and the cellulose microcrystals (1 mg material/mL of solution). B) Bisphenol A uptake at equilibrium of the CD-TFN@cellulose and the cellulose microcrystals as a function of bisphenol A concentration (1 mg of material/mL of solution).
  • FIG. 5 shows A) The number of micropollutants removed in ten removal bins with equivalent masses (500 mg) of TFN-CDP and CD-TFN@cellulose (TFN-CDP on the left and CD-TFN@cellulose on the right in each pairing) and B) A comparison of specific micropollutant removal on equivalent masses of TFN-CDP and CD-TFN@cellulose.
  • FIG. 6 represents examples of suitable aryl moieties for crosslinking with ⁇ - cyclodextrins and microcrystalline cellulose.
  • FIG. 7 includes 85 examples of water contaminants that are of interest to be removed.
  • FIG. 8 Reaction scheme of the CD-TFN@CMC synthesis.
  • FIG. 9 PXRD data and SEM images of a) The as synthesized adsorbent, b) The solid with a particle size larger than 45 ⁇ (CD-TFN@CMC), and c) The solid with a particle size smaller than 45 ⁇ (CD-TFN).
  • FIG. 10 shows a) Electron image, b) Fluorine mapping, and c) Cross sectional TEM of CD-TFN@CMC; d) Electron image, e) Fluorine mapping, and f) Cross sectional TEM of CMC.
  • FIG. 12 shows back pressure as a function of flow rate for CMC, CD-TFN, and CD- TFN@CMC packed in liquid chromatographic columns, using water as the mobile phase, and 200 mg of adsorbent.
  • FIG. 13 shows a) In-flow BP A uptake as a function of time for CD-TFN@CMC (200 mg) packed in a column at three different concentrations, and b) In-flow regeneration of CD- TFN@CMC (200 mg) packed in a column, saturation was performed with a 1.0 mM BPA solution and methanol was used for regeneration.
  • FIG. 14 shows in-flow uptake of 15 MPs (10 ppb each) by CD-TFN@CMC packed in a column (200 mg). Flow rate was 0.2 mL/min. Removal was calculated at 32 min for Atenolol, Atrazine, BPS, Gabapentin, Metolachlor, Metolachlor-ESA, Propanolol, and Valsartan. Removal was calculated at 10 min for 2,4-D, Bentazon, BPA, MCPA, Mecoprop, PFOA, and Sucralose. [0037] FIG.
  • FIG. 16 shows FTIR of CD-TFN, CD-TFN@CMC and CMC.
  • FIG. 17 shows a) F Is XPS. b) N Is XPS of CD-TFN, CD-TFN@CMC and CMC.
  • FIG. 18 shows a) Carbon, and b) Oxygen mapping of CMC. c) Carbon, and d) Oxygen mapping of CD-TFN@CMC.
  • FIG. 19 shows a) Electron image, and b) fluorine mapping of CD-TFN.
  • FIG. 20 shows cross sectional STEM zoom-in of CD-TFN@CMC.
  • FIG. 21 shows SEM image of CD-TFN.
  • FIG. 22 shows BPA uptake in terms of mg of BPA/g of ⁇ -CD of CD-TFN and CD- TFN@CMC as a function of the initial BPA concentration (1 mg of solid/mL of solution, measured at equilibrium).
  • FIG. 23 shows BPA uptake of a) CD-TFN and b) CD-TFN@CMC as a function of the equilibrium BPA concentration (1 mg of solid/mL of solution, measured at equilibrium).
  • FIG. 25 shows a) In flow BPA uptake as a function of time of the empty column at three different concentrations, and b) In flow BPA uptake as a function of time of the CMC (200 mg) packed in a column at three different concentrations.
  • FIG. 26 shows in flow vs batch BPA uptake of CD-TFN@CMC as a function of initial concentration.
  • FIG. 27 shows inflow uptake and breakthrough time of 8 MPs (10 ppb each) by CD- TFN@CMC packed in a column (200 mg). Flow rate was 0.2 mL/min.
  • FIG. 28 shows in flow MPs uptake as a function of time of CD-TFN@CMC (200 mg) packed in a column.
  • FIG. 29 shows structures of the adsorbed MPs.
  • FIG. 30 shows a) Electron image, and b) fluorine mapping of CD-TFN@CMS.
  • FIG. 32 shows back pressure as a function of flow rate packed in liquid chromatographic columns, using water as the mobile phase.
  • adsorbent or adsorb is used to refer to compositions or methods of the present disclosure to refer to solid materials as described herein which remove contaminants or pollutants, typically but not exclusively organic molecules, from a fluid medium such as a liquid (e.g., water) or a gas (e.g., air or other commercially useful gases such as nitrogen, argon, helium, carbon dioxide, anesthesia gases, etc.).
  • a fluid medium such as a liquid (e.g., water) or a gas (e.g., air or other commercially useful gases such as nitrogen, argon, helium, carbon dioxide, anesthesia gases, etc.).
  • gases e.g., air or other commercially useful gases such as nitrogen, argon, helium, carbon dioxide, anesthesia gases, etc.
  • the present disclosure addresses a need for a supported adsorbent that provides rapid contaminant extraction, high total uptake, and facile regeneration and reuse procedures, as well as a need for a supported purification adsorbent that is inexpensive and can be reliably mass produced.
  • the present disclosure provides a way to control the particle size and morphology of the adsorbent by covalently bonding a cyclodextrin polymer (e.g., ⁇ -cyclodextrin polymer) on a substrate of known size and shape.
  • a cyclodextrin polymer e.g., ⁇ -cyclodextrin polymer
  • Various supports may be used in the context of the present disclosure.
  • cellulose microcrystals are chosen as a support due to their availability in many sizes and shapes.
  • cellulose and cyclodextrins such as ⁇ -cyclodextrin have similar chemical structures and available reactive functional groups, both cellulose and cyclodextrins can react with the crosslinker during the polymerization reaction, which bonds the polymer to the cellulose support.
  • the cyclodextrin polymers of the present invention can be bonded to substrates other than cellulose having available, reactive hydroxyl groups as described herein.
  • the present disclosure is directed to methods of purifying a fluid sample comprising one or more unwanted compounds, wherein the sample is a fluid such as water or other liquids, air or other gases, by adsorbing the unwanted compounds with the supported porous polymeric material, typically in an amount of at least about 50% by weight of the total amount of said unwanted compounds.
  • the amount of unwanted compounds removed is at least about 10%>, at least about 15%, at least about 20%, at least about 25%, at least about 30%>, at least about 35%, at least about 40%, at least about 45%), at least about 50%, at least about 55%, at least about 60%, at least about 65%, at least about 70%), at least about 75%, at least about 80%, at least about 85%, at least about 90%, at least about 95%, about 100% and all values therebetween.
  • the present disclosure is directed to methods of recovering or isolating one or more compounds from a fluid sample, wherein the sample is a fluid such as water or other liquids, air or other gases, by adsorbing the compounds with the supported porous polymeric material, typically in an amount of at least about 50% by weight of the total amount of said compounds.
  • the amount of unwanted compounds removed is at least about 10%, at least about 15%, at least about 20%, at least about 25%, at least about 30%, at least about 35%, at least about 40%, at least about 45%, at least about 50%, at least about 55%, at least about 60%, at least about 65%, at least about 70%, at least about 75%), at least about 80%, at least about 85%, at least about 90%, at least about 95%, about 100%) and all values therebetween.
  • Flow characteristics are critical to the effectiveness of an adsorbent material in the removal of pollutants and/or contaminants from drinking and wastewater.
  • the large and monodisperse particle size of a material enables rapid flow rates with minimal pressure drops, which are required for membrane, column and other filtration implementations.
  • the present disclosure provides porous, typically high surface area cyclodextrin polymeric materials ("P-CDP”) grafted or bonded onto a variety of substrates as described herein, such as microcrystalline cellulose, (i.e. CD-TFN@CMC), as well as methods of making and using these materials.
  • P-CDP typically high surface area cyclodextrin polymeric materials
  • the present disclosure provides a supported porous polymeric material comprising porous particles affixed to a solid substrate, wherein said porous particles comprise a plurality of cyclodextrin moieties crosslinked with one or more aryl moieties, and wherein the supported porous polymeric material has one or more performance characteristics which are at least about 50% of the same performance characteristics of unsupported porous particles of the same composition.
  • the performance characteristic is pollutant uptake
  • the pollutant uptake of the supported porous polymeric material is at least about 50% of the pollutant uptake of the unsupported porous particles of the same composition, wherein the pollutant uptake is the weight of pollutant absorbed (in milligrams) divided by the weight of porous particles (in grams).
  • the pollutant uptake of the supported porous polymeric material is about the same as the pollutant uptake of the unsupported porous particles of the same composition.
  • the pollutant uptake of the supported porous polymeric material is greater than the pollutant uptake of the unsupported porous particles of the same composition.
  • the pollutant uptake of the supported porous polymeric material relative to unsupported porous particles of the same composition ranges from about 50% to about 1000%, for example, about 50%, about 60%, about 70%, about 80%, about 90%, about 100%, about 120%, about 140%, about 160%, about 180%, about 200%, about 250%, about 30%, about 350%, about 400%, about 450%, about 500%, about 550%, about 600%, about 650%, about 700%, about 750%, about 800%, about 850%, about 900%, about 950%), about 1000%), including any ranges or subranges therebetween.
  • the supported porous polymeric material is CD-TFN@CMC.
  • the pollutant is bisphenol A.
  • the performance characteristic is equilibrium adsorption capacity (q e ) for a pollutant, and the equilibrium adsorption capacity of the supported porous polymeric material is at least about 50% of the equilibrium adsorption capacity of unsupported porous particles having the same composition, wherein the q e is measured as
  • the equilibrium adsorption capacity of the supported porous polymeric material is about the same as the equilibrium adsorption capacity of the unsupported porous particles of the same composition. In some embodiments, the equilibrium adsorption capacity of the supported porous polymeric material is greater than the equilibrium adsorption capacity of the unsupported porous particles of the same composition.
  • the equilibrium adsorption capacity of the supported porous polymeric material relative to unsupported porous particles of the same composition ranges from about 50% to about 1000%), for example, about 50%, about 60%>, about 70%, about 80%, about 90%, about 100%, about 120%, about 140%, about 160%, about 180%, about 200%, about 250%, about 30%, about 350%, about 400%, about 450%, about 500%, about 550%, about 600%, about 650%, about 700%, about 750%, about 800%, about 850%), about 900%, about 950%, about 1000%), including any ranges or subranges therebetween.
  • the supported porous polymeric material is CD- TFN@CMC.
  • the pollutant is bisphenol A.
  • the performance characteristic is the rate at which equilibrium adsorption of a pollutant is reached (rate of equilibrium adsorption), and the rate of equilibrium adsorption of a pollutant of the supported porous polymeric material is at least about 50% of the rate of equilibrium adsorption of unsupported porous particles having the same composition and measured under the same conditions. In some embodiments, the rate of equilibrium adsorption of the supported porous polymeric material is about the same as the rate of equilibrium adsorption of the unsupported porous particles of the same composition measured under the same conditions.
  • the rate of equilibrium adsorption of the supported porous polymeric material is greater than the rate of equilibrium adsorption of the unsupported porous particles of the same composition measured under the same conditions.
  • the rate at which equilibrium adsorption capacity of the supported porous polymeric material is reached relative to unsupported porous particles of the same composition ranges from about 50% to about 1000%), for example, about 50%, about 60%, about 70%, about 80%, about 90%, about 100%, about 120%, about 140%, about 160%, about 180%, about 200%, about 250%, about 30%, about 350%, about 400%, about 450%, about 500%, about 550%, about 600%, about 650%, about 700%, about 750%, about 800%, about 850%), about 900%, about 950%, about 1000%), including any ranges or subranges therebetween.
  • the supported porous polymeric material is CD- TFN@CMC.
  • the pollutant is bisphenol A.
  • the performance characteristic is the specific permeability of the supported polymeric material to a mobile phase at pressure P when the supported polymeric material is placed in a cylindrical column, wherein specific permeability (So) is:
  • the supported porous polymeric material has higher specific permeability compared to the unsupported porous particles having the same composition. In some embodiments, the specific permeability of the supported porous polymeric material is at least double the specific permeability of unsupported porous particles having the same composition.
  • the specific permeability of the supported porous polymeric material relative to unsupported porous particles of the same composition ranges from about 50% to about 1000%, for example, about 50%, about 60%, about 70%, about 80%, about 90%, about 100%, about 120%, about 140%, about 160%, about 180%, about 200%, about 250%, about 30%, about 350%, about 400%, about 450%, about 500%, about 550%, about 600%, about 650%, about 700%, about 750%, about 800%, about 850%, about 900%, about 950%), about 1000%), including any ranges or subranges therebetween.
  • the supported porous polymeric material is CD-TFN@CMC.
  • the supported porous polymeric material is CD-TFN@CMC and has a specific permeability at least about 4 times more than the unsupported porous particles having the same composition.
  • the plurality of cyclodextrin moieties are crosslinked with at least an equimolar amount of one or more aryl moieties; wherein the aryl moiety is an aryl moiety of formula (I), (II), (III), or (IV), as described in detail below.
  • the porous particles are affixed to the solid substrate covalently, adhesively, or mechanically. In some embodiments, the porous particles are affixed to the solid substrate covalently via a crosslinking moiety. In some embodiments, the crosslinking moiety is an aryl moiety of formula (I), (II), (III), or (IV).
  • the aryl moiety is an aryl moiety of formula (I), as described in detail below. In some embodiments, the aryl moiety is an aryl moiety of formula (II), as described in detail below. In some embodiments, the aryl moiety is an aryl moiety of formula (III), as described in detail below. In some embodiments, the aryl moiety is an aryl moiety of formula (VI), as described in detail below. [0075] In some embodiments, the molar ratio of cyclodextrin to aryl moiety ranges from about 1 : 1 to about 1 :X, wherein X is three times the average number of glucose subunits in the cyclodextrin. In some embodiments, the molar ratio of cyclodextrin to aryl moiety is about 1 :6.
  • the cyclodextrin is selected from the group consisting of ⁇ -, ⁇ -, ⁇ -cyclodextrin, and combinations thereof. In some embodiments, the cyclodextrin is ⁇ - cyclodextrin.
  • the aryl moiety is an aryl moiety of formula (I), and the molar ratio of ⁇ -cyclodextrin to aryl moiety is about 1 :3. In some embodiments, the aryl moiety is an aryl moiety of formula (II), and the molar ratio of ⁇ -cyclodextrin to aryl moiety is about 1 :3. In some embodiments, the aryl moiety is an aryl moiety of formula (III), and the molar ratio of ⁇ -cyclodextrin to aryl moiety is about 1 :3. In some embodiments, the aryl moiety is an aryl moiety of formula (IV), and the molar ratio of ⁇ -cyclodextrin to aryl moiety is about 1 :3.
  • the solid substrate is selected from the group consisting of, microcrystalline cellulose, cellulose nanocrystals, cellulose pulp, acrylate materials, methacrylate materials, styrenic materials, polystyrene materials, polyester materials, nylon materials, silicates, silicones, alumina, titania, zirconia, hafnia, hydroxyl-containing polymer beads, hydroxyl-containing irregular particles, amino-containing polymer beads, amino- containing irregular particles, fibrous materials, spun yarn, continuous filament yarn, staple nonwovens, continuous filament nonwovens, knit fabrics, woven fabrics, nonwoven fabrics, film membranes, spiral wound membranes, hollow fiber membranes, cloth membranes, powders, solid surfaces, polyvinylamine, polyethylenimine, proteins, protein-based fibers, wool, chitosan, amine-bearing cellulose derivatives, polyamide, vinyl chloride, vinyl acetate, polyurethane, melamine, polyimide, polyacryl, polyamide
  • the fibrous material is selected from the group consisting of pulp fibers, short cut fibers, staple fibers, continuous filament fibers, and cellulosic fibers; wherein the cellulosic fiber is selected from the group consisting of wood pulp, paper, paper fibers, cotton, regenerated cellulose, cellulose esters, cellulose ethers, starch, polyvinylalcohols, and derivatives thereof.
  • the substrate is microcrystalline cellulose, cellulose nanocrystals, silica, glass, or beads made from synthetic polymer.
  • the substrate is microcrystalline cellulose.
  • the microcrystalline cellulose has a median particle size ranging from about 10 to about 500 ⁇ .
  • the microcrystalline cellulose has a median particle size of about 50 ⁇ .
  • the porous particles have a thickness on the solid substrate of from about 10 nm to about 2000 nm. In some embodiments, the porous particles have a polymer thickness of about 800 nm on the solid substrate.
  • the aryl moiety is
  • the supported porous polymeric material is CD-TFN@CMC or CD- DFB@CMC.
  • the microcrystalline cellulose is spherical, rod-shaped, needlelike, flat, or flat and elongated. In some embodiments, the microcrystalline cellulose is spherical.
  • the substrate is cellulose nanocrystals.
  • the P-CDPs are comprised of insoluble polymers of cyclodextrin, which is an inexpensive, sustainably produced macrocycle of glucose.
  • the polymers of cyclodextrin are comprised of cyclodextrin moieties that are derived from cyclodextrins.
  • the cyclodextrin moiety(s) can be derived from naturally occurring cyclodextrins (e.g., ⁇ -, ⁇ -, ⁇ -, comprising 6, 7, and 8 glucose units, respectively) or synthetic cyclodextrins.
  • naturally occurring cyclodextrins are non-genetically modified cyclodextrins.
  • the cyclodextrin moiety has at least one -O- bond derived from an -OH group on the cyclodextrin from which it is derived.
  • the cyclodextrin moieties can comprise 3-20 glucose units, including 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20 glucose units, inclusive of all ranges there between.
  • the cyclodextrin moieties are derived from starch, and comprise 6-9 glucose units.
  • the polymeric materials may comprise two or more different cyclodextrin moieties.
  • the P-CDP is comprised of insoluble polymers of ⁇ -cyclodextrin ( ⁇ -CD).
  • the P-CDP can also comprise cyclodextrin derivatives or modified cyclodextrins.
  • the derivatives of cyclodextrin consist mainly of molecules wherein some of the -OH groups are converted to -OR groups.
  • the -OR group can be a variety of functional groups, such as e.g., halide, acid halide, ester, or activated ester.
  • the cyclodextrin derivatives can, for example, have one or more additional moieties that provide additional functionality, such as desirable solubility behavior and affinity characteristics.
  • Suitable cyclodextrin derivative materials include methylated cyclodextrins (e.g., RAMEB, randomly methylated ⁇ - cyclodextrins), hydroxyalkylated cyclodextrins (e.g., hydroxypropyl- -cyclodextrin and hydroxypropyl-y-cyclodextrin), acetylated cyclodextrins (e.g., acetyl-y-cyclodextrin), reactive cyclodextrins (e.g., chlorotriazinyl- -CD), branched cyclodextrins (e.g., glucosyl- ⁇ - cyclodextrin and maltosyl- -cyclodextrin), sulfobutyl- ⁇ -cyclodextrin, and sulfated cyclodextrins.
  • methylated cyclodextrins
  • Suitable cyclodextrins can also include cyclodextrins functionalized with photochemically reactive moieties such as vinyl, propargyl, acrylate, methacrylate groups, or thiol groups, so that after forming the P-CDP of the present disclosure, the P-CDP can be photochemically grafted to a suitably functionalized support using known methods (e.g., curing with a suitable wavelength of UV light in the presence of a photoinitiator and the photochemically reactive substrate).
  • the reactive moieites can be activated through chemical generation of radical species such as through the thermal decomposition of azo compounds (such as azobisisobutyronitrile).
  • the P-CDP can also be prepared from cyclodextrin derivatives as disclosed in U.S. Patent No. 6,881,712 including, e.g., cyclodextrin derivatives with short chain alkyl groups such as methylated cyclodextrins, and ethylated cyclodextrins, wherein R is a methyl or an ethyl group; those with hydroxyalkyl substituted groups, such as hydroxypropyl cyclodextrins and/or hydroxyethyl cyclodextrins, wherein R is a -CH2-CH(OH)-CH3 or a -CH2CH2-OH group; branched cyclodextrins such as maltose-bonded cyclodextrins; cationic cyclodextrins such as those containing 2-hydroxy-3-(dimethylamino)propyl ether, wherein R is CH2- CH(OH)-
  • the P-CDP can also comprise a variety of aryl crosslinking moieties.
  • the aryl crosslinking moiety is derived from an aryl compound that can react with a cyclodextrin to form an aryl ether bond.
  • the aryl crosslinking moiety may comprise one or more electron withdrawing group (e.g., a halide group, such as -CI and -F, -N02, and -CN group).
  • the electron- withdrawing groups can be the same or different. Without intending to be bound by any particular theory, it is considered that the electron withdrawing group(s) facilitates a nucleophilic aromatic substitution reaction between the cyclodextrin and aryl compound.
  • the aryl crosslinking moiety has 0, 1, or 2 cyano groups and, optionally, 0, 1, 2, 3, or 4 halide groups.
  • the aryl moiety comprises one or more aromatic ring.
  • the aromatic ring(s) comprise 4 to 40 carbons, including 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, and 40 carbons, including all ranges therebetween.
  • the aryl moiety can be a fused aromatic ring structure or have at least two aromatic rings linked by a covalent bond (e.g., a biphenyl moiety).
  • the aryl moiety can be a hydrocarbon aryl moiety or heteroaryl moiety.
  • the heteroaryl moiety has one or more heteroatom in an aryl ring or rings.
  • aryl moieties include phenyl moieties, biphenyl moieties, napthyl moieties, and anthracene moieties.
  • the aryl moiety is a dicyanophenyl moiety with 0, 1, or 2 halide groups (i.e., substituents).
  • the ar l moiety is an aryl moiety of formula (I):
  • L is Aiyl, -S(0>2-, -C(0)-, bond
  • each Y is independently H, F, CI, CF3, SO3H, or NO2, with the proviso that n and at least 2 of Y are F and/or CI; or
  • R 1 is CI, F or CN
  • R 2 is CI, F, CN, or NO2;
  • each R 3 is independently H, F, or CI, with the proviso at least 2 of R 1 , R 2 , or R 3 is F and/or CI; or
  • L is Aryl
  • X is O or S
  • each R 4 is independently F, CI, or CF3;
  • each R 5 is independently F, CI, or NO2, with the proviso that at least 2 of R 4 and R 5 are F and/or CI; or
  • the aryl moiety of formula (I) are selected from the group consistin of:
  • the aryl moiety is an aryl moiety of formula (I) and is selected from the group consisting of:
  • the aryl moiety is an aryl moiety of formula (I) and is
  • the aryl moiety is an aryl moiety of formula (II), and is selected from the group consisting of:
  • the aryl moiety is an aryl moiety of formula (II), and is selected from the group
  • the aryl moiety is an aryl moiety of formula (III), and is selected from the group consisting of:
  • F can be replaced with CI.
  • suitable aryl moieties include, but are not limited to, the aryl moieties shown in FIG. 6 (In the examples, Ar is an aryl moiety as described herein).
  • aryl refers to cyclic, aromatic hydrocarbon groups that have 1 to 3 aromatic rings, including monocyclic or bicyclic groups such as phenyl, biphenyl or naphthyl. Where containing two aromatic rings (bicyclic, etc.), the aromatic rings of the aryl group may be joined at a single point (e.g., biphenyl), or fused (e.g., naphthyl).
  • the aryl group may be optionally substituted by one or more substituents, e.g., 1 to 14 substituents, at any point of attachment. The substituents can themselves be optionally substituted.
  • the aryl groups herein defined may have an unsaturated or partially saturated ring fused with a fully saturated ring.
  • exemplary ring systems of these aryl groups include, but are not limited to, phenyl, biphenyl, naphthyl, anthracenyl, phenalenyl, phenanthrenyl, indanyl, indenyl, tetrahydronaphthalenyl, tetrahydrobenzoannulenyl, and the like.
  • aryl also encompasses heteroaryl groups, which have 1 to 3 aromatic rings having of 5 to 18 ring atoms or a poly cyclic aromatic radical, containing one or more ring heteroatoms selected from N, O, or S, the remaining ring atoms being C.
  • Exemplary ring systems of these heteroaryl groups include, but are not limited to, benzothiophene, furyl, thienyl, pyrrolyl, pyridyl, pyrazinyl, pyrazolyl, pyridazinyl, pyrimidinyl, imidazolyl, isoxazolyl, oxazolyl, oxadiazolyl, pyrazinyl, indolyl, thiophen-2-yl, quinolyl, benzopyranyl, isothiazolyl, thiazolyl, thiadiazolyl, thieno[3,2-b]thiophene, triazolyl, triazinyl, imidazo[l,2- b]pyrazolyl, furo[2,3-c]pyridinyl, imidazo[l,2-a]pyridinyl, indazolyl, pyrrolo[2,3-c]pyridinyl, pyrrolo[
  • the porous polymeric material comprises a plurality of cyclodextrin moieties, for example ⁇ -cyclodextrin moieties.
  • the porous polymeric material comprises a plurality of ⁇ -cyclodextrin moieties crosslinked by one or more aryl (e.g., dicyanodifluorophenyl) moieties.
  • aryl e.g., dicyanodifluorophenyl
  • at least two of the plurality of ⁇ -cyclodextrin moieties are crosslinked by two or more aryl moieties.
  • polymeric material of the present disclosure can also include any of the cyclodextrin moieties disclosed herein, for example a- or ⁇ -cyclodextrin moieties in addition to, or instead of the ⁇ -cyclodextrin moieties.
  • the aryl moieties can crosslink the primary and/or secondary groups on the cyclodextrin.
  • the crosslinked cyclodextrin moieties can be covalently bonded to various positions.
  • the aryl moieties can crosslink the primary and/or secondary groups on CMC.
  • the crosslinked CMC can also be covalently bonded to various positions.
  • the aryl crosslinking moiety comprises a phenyl moiety
  • the crosslinking bonds can be to 1,2-, 1,3-, and/or 1,4-positions (relative positions) of the phenyl moiety on the aryl crosslinking moiety, depending on the available bonding sites on the phenyl moiety.
  • the porous polymeric materials can include various regioisomers of the material.
  • the porous polymeric material comprises one or more regioisomer of the porous polymeric material.
  • the porous polymeric material of the present disclosure can have pores ranging in size (i.e., the longest dimension (e.g., diameter) of an orifice of a pore) from about 1 nm to about 50 nm, about 1 nm to about 20 nm, about 1 nm to about 10 nm, or about 1 nm to about 5 nm, including about 1 nm, about 2 nm, about 3 nm, about 4 nm, about 5 nm, about 6 nm, about 7 nm, about 8 nm, about 9 nm, about 10 nm, about 11 nm, about 12 nm, about 13 nm, about 14 nm, about 15 nm, about 16 nm, about 1 7 nm, about 18
  • the porous polymeric material is mesoporous. In an embodiment, the porous polymeric material comprises pores of about 1.5 nm to about 5 nm in size. In various embodiments, about 50% or more, about 80% or more, about 90% or more, about 95% or more, about 99% or more of the pores in the porous polymeric material are about 1 nm to about 50 nm in size. In various embodiments, about 50% or more, about 80% or more, about 90% or more, about 95% or more, about 99% or more of the pores in the porous polymeric material are about 10 nm or less in size.
  • the P-CDPs have a relatively large surface area, which substantially improves the adsorption kinetics and/or capacity compared to conventional nonporous P-CDPs.
  • the porous polymeric materials of the present disclosure can have a surface area ranging from about 50 m 2 /g to about 2000 m 2 /g, including all integer m 2 /g values and ranges therebetween.
  • the surface area is about 50 m 2 /g, about 100 m 2 /g, about 150 m 2 /g, about 200 m 2 /g, about 250 m 2 /g, about 300 m 2 /g, about 350 m 2 /g, about 400 m 2 /g, about 450 m 2 /g, about 500 m 2 /g, about 550 m 2 /g, about 600 m 2 /g, about 650 m 2 /g, about 700 m 2 /g, about 750 m 2 /g, about 800 m 2 /g, about 850 m 2 /g, about 900 m 2 /g, about 950 m 2 /g, about 1000 m 2 /g, about 1100 m 2 /g, about 1200 m 2 /g, about 1300 m 2 /g, about 1400 m 2 /g, about 1500 m 2 /g, about 1600 m 2 /g, about
  • the ratio of cyclodextrin moieties to aryl crosslinking moieties is 1 : 1 to 1 :X, where X is three times the average number of glucose subunits in the cyclodextrin moieties of the polymer.
  • the ratio of cyclodextrin moieties to aryl crosslinking moieties is about 1 : 1 to about 1 :24, including about 1 : 1, about 1 : 1.5, about 1 :2, about 1 :2.5, about 1:3, about 1 :3.5, about 1:4, about 1 :4.5, about 1:5, about 1:5.5, about 1:6, about 1 :6.5, about 1:7, about 1:7.5, about 1:8, about 1:8.5, about 1:9, about 1:9.5, about 1:10, about 1:10.5, about 1:11, about 1:11.5, about 1:12, about 1:12.5, about 1:13, about 1:13.5, about 1:14, about 1:14.5, about 1:15, about 1:15.5, about 1:16, about 1:16.5, about 1:17, about 1:17.5, about 1:18, about 1 : 18.5, about 1:19, about 1:19.5, about 1 :20, about 1 :20.5, about 1:21, about 1 :21.5, about 1:22, about 1:22.5, about 1:23, about 1:23.5, or about 1:24, including all ranges of ratios
  • the substrate may be microcrystalline cellulose, and the molar ratio of glucose subunits in the microcrystalline cellulose to aryl moieties covalently bonded to the glucose subunits in the microcrystalline cellulose ranges from about 1 : 1 to about 1:X, wherein X is three times the average number of glucose subunits in the microcrystalline cellulose.
  • the ratio of glucose subunits in the microcrystalline cellulose to aryl crosslinking moieties is about 1:0.01 to about 1:3, including about 1:0.01, about 1:0.02, about 1:0.03, about 1:0.04, about 1:0.05, about 1:0.06, about 1:0.07, about 1:0.08, about 1:0.09, about 1:0.1, about 1:0.2, about 1:0.3, about 1:0.4, about 1:0.5, about 1:0.6, about 1:0.7, about 1:0.8, about 1:0.9, about 1:1, about 1:1.1, about 1:1.2, about 1:1.3, about 1:1.4, about 1:1.5, about 1:1.6, about 1:1.7, about 1:1.8, about 1:1.9, about 1:2, about 1:2.1, about 1:2.2, about 1:2.3, about 1:2.4, about 1:2.5, about 1:2.6, about 1:2.7, about 1:2.8, about 1:2.9, or about 1:3, including all ranges of ratios therebetween.
  • the ratio of microcrystalline cellulose to aryl crosslinking moieties is about 1:0.01, to
  • the present disclosure provides a composition comprising one or more porous polymeric materials (P-CDPs) of the present disclosure.
  • the composition comprises a support material supporting the porous polymeric materials of the present disclosure.
  • the composition consists essentially of one or more porous polymeric materials.
  • a composition according to the present disclosure comprises one or more porous polymeric material and one or more support materials, where the porous polymeric material is bound (e.g., covalently, adhesively, or mechanically bonded as described herein) to the support material.
  • support materials include cellulose (e.g., cellulose fibers), carbon-based materials such as activated carbon, graphene oxide, and oxidized carbon materials, silica, alumina, natural or synthetic polymers, and natural or synthetic polymers modified to include surface hydroxyl groups.
  • the composition is in the form a membrane or a column packing material.
  • the support is a fiber (e.g., a cellulose, nylon, polyolefin or polyester fiber).
  • the support is a porous particulate material (e.g., porous silica and porous alumina).
  • the support is a woven or non-woven fabric.
  • the support is a garment (such as a protective garment) or a surgical or medical drape, dressing, or sanitary article.
  • the P-CDP may be grafted or bonded (e.g., chemically or mechanically bonded) onto a support to provide an adsorbent where the particle size and morphology are well-controlled to give ideal flow characteristics.
  • the term "mechanical bond” refers to a bond formed between two materials by pressure, ultrasonic attachment, and/or other mechanical bonding process without the intentional application of heat, such as mechanical entanglement. The physical entanglement and wrapping of microfibrils to hold in place micron- sized particulate matter is a prime example of a mechanical bond. The term mechanical bond does not comprise a bond formed using an adhesive or chemical grafting.
  • the P-CDP may be grafted or bonded (e.g., chemically or mechanically bonded) onto a support to provide an adsorbent where the particle size and morphology are further engineered (e.g., by granulation or milling) to provide particles with a well-controlled size and morphology to give ideal flow characteristics.
  • the P-CDP-support complex may be prepared by a variety of methods, including conventional grafting methods.
  • grafting refers to covalently attaching P-CDPs to a substrate surface through coupling reactions between one or more functional groups on the P-CDP and one or more functional groups on the substrate.
  • Grafting includes an "in situ" process as described herein in which cyclodextrins, aryl crosslinking agents (e.g., aryl halides as described herein), and a substrate having surface bound nucleophiles (e.g., hydroxyls) are reacted together such that the aryl crosslinking agent reacts with the hydroxyl groups of the cyclodextrins and the surface nucleophiles of the substrate, forming a P-CDP which is partially bonded via one or more aryl groups to the substrate.
  • the substrate having surface bound nucleophiles include, but are not limited to hydroxyls (such as microcrystalline cellulose), amines, phosphines, and thiols.
  • "grafted" P-CDP-support complexes are prepared by first synthesizing the P-CDPs in a dedicated chemical reactor with adequate control of the reaction conditions and material purification to produce optimized P-CDP particles.
  • the P-CDPs are then chemically reacted with a suitably functionalized substrate.
  • a substrate functionalized with carboxylic acid groups or activated forms thereof such as acid halides, anhydrides, etc. known in the art
  • the P-CDP can be appropriately functionalized (e.g., by selection of a functionalized cyclodextrin as described herein) of by a subsequent modification of the P-CDP such that it can react with suitable functional groups on the substrate.
  • Any suitable reaction chemistries can be contemplated, such as reactions between carboxylic acids (and derivatives thereof) and hydroxyls to form ester bonds, reactions between carboxylic acids (and derivatives thereof) and amine groups to form amide bonds, reactions between isocyanates and alcohols to make urethanes, reactions between isocyanates and amines to make ureas, reactions between cyclic carbonates and amines to make urethanes, reactions between thiols and alkenes or alkynes to make thioethers, reactions between epoxides and amine groups, photochemical reactions between acrylates, methacrylates, thiols etc.
  • the reactive functional groups described herein can be on either of the P- CDP or substrate provided the reaction forms a covalent bond between the substrate and the P- CDP.
  • the reactive functional groups are hydroxyls and carboxylic acids (forming an ester bond after reaction), the hydroxyl groups can be present on the P-CDP and the carboxyl groups on the substrate or vice- versa.
  • the substrate can be coated with a "primer" having reactive functional groups as described above.
  • the primer adheres to the surface of the substrate, and under suitable conditions can react with a suitably functionalized P-CDP to for a covalent bond between the P-CDP and the primer.
  • the P-CDP particles may be engineered to achieve specific particle sizes.
  • the P-CDP is produced in the form of crosslinked particles which may require further reduction in size (e.g, for the purposes of forming stable dispersions or slurries, or in providing optimal flow characteristics).
  • a variety of means that are readily apparent to a skilled artisan can be employed to reduce the particle size of the P-CDP such as grinding or milling. Grinding and milling can be employed to create smaller particles with sizes less than 1 micron. Typical milling operations can be used by a skilled artisan and include both wet and dry milling.
  • Milling can be employed through a variety of methods including, but not limited to: ball mill, autogeneous mill, SAG mill, pebble mill, rod mill, Buhrstone mill, tower mill, vertical shaft impactor mill, and the like.
  • Milling media includes, but is not limited to: metals, silicates, and other inorganic materials in various form factors including, rods, balls, and irregular shapes.
  • the milling is performed on dry P-CDP powder material in a dry process to produce a finer dry powder or on wet aqueous slurries of the P-CDP powder with or without emulsifying agents to produce a finer particulate dispersion.
  • Emulsifying agents may be used and are readily apparent to a skilled artisan, including, but not limited to: small molecule and polymeric surfactant compounds with nonionic, anionic, or cationic character.
  • a skilled artisan will appreciate that using fine particulate form factors will enable a variety of benefits, such as (1) more stable aqueous dispersions that remain homogeneous over time by resisting separation, (2) enable a high loading of material by weight in the dispersion with values of 50% by weight or higher, (3) produce particulate matter that can be evenly coated or applied to various substrates, surfaces, fibers, yarns, fabrics and the like to produce a finished material with minimal perceptible changes in "hand,” and (4) produce dispersions that are stable to dilution and blending with other emulsions or solutions such as binders, surfactants, wetting agents, or softeners.
  • the final particle diameter includes ⁇ 1 micron, 1-5 micron, 5-10 micron, 10-15 micron, and 15-20 micron, or ranges therebetween.
  • the composition may be granulated to form agglomerates of larger particle size.
  • granules e.g., self-supporting granules
  • this process will transform P-CDP particle powders in the size regimes ranging from 1-30 microns to granules in excess of 100 microns, 200 microns, 300 microns, and larger.
  • This process may be achieved via granulation techniques common to the pharmaceutical industry ⁇ Handbook of Granulation Technology, Ed. Parikh, D. M., 2005, Taylor & Francis Group) in which the powders are bound together via physical and/or chemical means in batch or continuous modes.
  • particles of the P-CDP are blended mechanically with a fluid (e.g., aqueous) mixture containing an adhesive binder - typically a synthetic, semi-synthetic, or natural polymer.
  • a fluid e.g., aqueous
  • Suitable semi-synthetic polymers include cellulose ethers, specifically ethylcellulose, methylcellulose, hydroxypropylcellulose, carboxymethylcellulose, starch and starch derivatives, and others.
  • Suitable fully synthetic polymers such as polyvinylpyrrolidone or polyethylene glycol can be used.
  • Suitable binders include sizes and other coatings used in the textile industry and paper industries including polyamide amine epichlorohydrin (PAE) or polymeric glyoxal crosslinkers, polyvinylalcohol, and starch-based sizes.
  • PAE polyamide amine epichlorohydrin
  • polymeric glyoxal crosslinkers polyvinylalcohol, and starch-based sizes.
  • further covalent crosslinking may be facilitated via the addition of small molecule crosslinkers such as glyoxal, formaldehyde, diisocyanate, and/or diepoxide functionalities.
  • electrostatic agglomeration of polyelectrolytes can also be utilized as a binding motif in which cationic polyelectrolytes form suitable adhesive properties when blended with anionic poly electrolytes in the presence of P-CDP powders and/or support structures.
  • Polycations can comprise those commonly used for flocculation including, but not limited to polydiallyldimethylammonium chloride (polyDADMAC), acidic polyethyleneimine, and polyacrylamides.
  • Polyanions can comprise those commonly used for flocculation including, but not limited to sodium polyacrylate, sodium polystyrene sulfonate, and polyvinyl sulfonate.
  • Mechanical blending during the granulation may be achieved via low shear processes such as rotary drum mixing or overhead mechanical stirring. As will be readily apparent to a skilled artisan, the stirring rate and total length of stirring time effects the granule size.
  • Granulation may also be conducted in fluidized beds or via spray drying techniques. In each case, the P-CDP particle are combined with the aqueous or solvent borne mixture containing the binder compounds and the mechanical or physical agitation is conducted at a specified shear for a determined number of cycles.
  • the resultant particles will display a step growth change in their average diameters and can also display a changed polydispersity.
  • the physical properties of these granules depend on the binder selected, the crosslinking chemistry, and the physical process used in their granulation. These larger granular particles will be suitable for packed bed column filtration commonly employed for water filtration and industrial separations.
  • the present disclosure provides a stable aqueous dispersion comprising P-CDP particles.
  • the P-CDP particles of the present disclosure which can be used in such stable aqueous dispersions are from about 1 ⁇ to about 150 ⁇ .
  • the P-CDP particles are from about 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115,
  • a stable aqueous dispersion may be used in "grafting" applications.
  • the stable aqueous dispersion may be used in applications with chemical binders or fibrillating fibers for mechanical loading and binding, and incorporation into thermally- bonded particulate pressed forms and into solution processed polymer form factors.
  • the P-CDP materials of the present disclosure can also be prepared on a support material (alternatively termed a "substrate"), for example covalently bonded, adhesively bonded, or mechanically attached to a support such as a fibrous substrate.
  • the support material can be any material that has one or more groups (e.g., hydroxyl or amino, thiol, or phosphine, or other group as described herein) that can form an interaction (e.g., a covalent or mechanical bond) with a crosslinking agent or cyclodextrin.
  • one end of a crosslinking agent e.g., an aryl moiety as described herein or a linking moiety
  • another end of the crosslinking agent is covalently bound to a cyclodextrin glucose unit or a reactive center on modified cyclodextrin (such as an acid halide or activated ester bound to the cyclodextrin).
  • the support material not dissolve (e.g., to an observable extent by, for example, visual inspection, gravimetric methods, or spectroscopic methods) under use conditions, for example in aqueous media.
  • support materials include, but are not limited to, microcrystalline cellulose, cellulose nanocrystals, polymer materials (e.g., acrylate materials, methacrylate materials, styrenic materials (e.g., polystyrene), polyester materials, nylon materials, and combinations thereof or inorganic materials (e.g., silicates, silicones, metal oxides such as alumina, titania, zirconia, and hafnia, and combinations thereof).
  • the polymer materials are homopolymers, copolymers, or resins (e.g., resins comprising polymeric materials).
  • the support material may be hydroxyl or amino containing polymer beads or irregular particles.
  • the support material can be in the form a fiber (e.g., pulps, short cut, staple fibers, and continuous filaments), fiber bundles (e.g., yarn - both spun and continuous filament), fiber mats (e.g., nonwovens - both staple and continuous filament), fabrics (e.g., knits, woven, nonwovens), membranes (e.g., films, spiral wound, and hollow fibers, cloth, particulate (e.g., a powder), or a solid surface.
  • the fibrous substrate is a cellulosic substrate.
  • Cellulosic substrates can comprise any suitable form of cellulose, such as cellulose derived from plant sources such as wood pulp (e.g., paper or paper fibers), cotton, regenerated cellulose, modified cellulosics such cellulose esters and/or ethers, and the like, starch, polyvinylalcohols and derivatives thereof.
  • the cellulosic substrate can be in the form of a fabric, such as a woven or nonwoven fabric, or as fibers, films, or any other suitable shape, particularly shapes that provide high surface area or porosity.
  • the P-CDP materials of the present disclosure are bonded to fibers, for example, a cellulosic fiber or a fabric, such as cotton.
  • the substrate may include any of the following: polyvinylamine, polyethylenimine, proteins, protein-based fibers (e.g., wool), chitosan and amine-bearing cellulose derivatives, polyamide, vinyl chloride, vinyl acetate, polyurethane, melamine, polyimide, polystyrene, polyacryl, polyamide, acrylate butadiene styrene (ABS), Barnox, PVC, nylon, EVA, PET, cellulose nitrate, cellulose acetate, mixed cellulose ester, polysulfone, polyether sulfone, polyvinylidene fluoride (PVDF) or polytetrafluoroethylene (PFTE or Teflon R.), polyethylene, polypropylene, polycarbonate, phosphine or thiol functional materials, and silicone or combinations thereof.
  • PVDF polyvinylidene fluoride
  • PFTE or Teflon R. polytetrafluoroethylene
  • the substrate may also consist of silicon or silicon oxide, or glass (e.g. as microfibers). Suitable materials further include textiles or synthetic or natural fiber-based materials.
  • the material may exhibit any form or shape and may for instance be in the form of a sheet, bead, granule, rod, fiber, foam or tube, and may be rigid, flexible or elastic.
  • the material surface may be activated by any method known in the art, such as known surface activation techniques, including for instance corona treatment, oxygen plasma, argon plasma, selective plasma bromination, chemical grafting, allyl chemistry, chemical vapor deposition (CVD) of reactive groups, plasma activation, sputter coating, etching, or any other known technique.
  • surface activation techniques including for instance corona treatment, oxygen plasma, argon plasma, selective plasma bromination, chemical grafting, allyl chemistry, chemical vapor deposition (CVD) of reactive groups, plasma activation, sputter coating, etching, or any other known technique.
  • surface activation techniques including for instance corona treatment, oxygen plasma, argon plasma, selective plasma bromination, chemical grafting, allyl chemistry, chemical vapor deposition (CVD) of reactive groups, plasma activation, sputter coating, etching, or any other known technique.
  • CVD chemical vapor deposition
  • the purpose of the activation of the surface is to provide for
  • the functionalization may also comprise the introduction of spacers or linker to the surface for the attachment of the primer polymer to the surface at a predetermined distance.
  • a suitable spacer is for instance an alkylation by reacting the surface with for instance aminoalkylsilane.
  • the P-CDP may be bound to the substrate via a linker moiety, also referred to herein as a crosslinker moiety.
  • a "linker moiety” refers to the intervening atoms between the P-CDP and substrate.
  • the terms “linker” and “linking moiety” herein refer to any moiety that connects the substrate and P-CDP to one another.
  • the linking moiety can be a covalent bond or a chemical functional group that directly connects the P-CDP to the substrate.
  • the linking moiety can contain a series of covalently bonded atoms and their substituents which are collectively referred to as a linking group.
  • Linking moieties are characterized by a first covalent bond or a chemical functional group that bonds the P-CDP to a first end of the linker group and a second covalent bond or chemical functional group that bonds the second end of the linker group to the substrate.
  • the first and second functionality which independently may or may not be present, and the linker group are collectively referred to as the linker moiety.
  • the linker moiety is defined by the linking group, the first functionality if present and the second functionality if present.
  • the linker moiety contains atoms interposed between the drug moiety and substrate, independent of the source of these atoms and the reaction sequence used to synthesize the conjugate.
  • the linker moiety is an aryl moiety as described herein.
  • the linker has one or more of the following functionalities: multifunctional isocyanate (e.g., a diisocyanate), epoxy, carboxylic acid, ester, activated ester, cyanuric chloride, cyanuric acid, acid chloride, halogen, hydroxyl, amino, thiol, and phosphine.
  • multifunctional isocyanate e.g., a diisocyanate
  • epoxy carboxylic acid
  • ester activated ester
  • cyanuric chloride cyanuric acid
  • acid chloride halogen, hydroxyl, amino, thiol, and phosphine.
  • the P-CDP is grafted or bonded onto microcrystalline cellulose (CMC).
  • CMC is available in a variety of median particles sizes from about 10 - about 500 um including about 10 ⁇ m, 20 ⁇ m, 45 ⁇ m, 50 ⁇ m, 65 ⁇ m, 75 ⁇ m, 100 ⁇ m, 150 ⁇ m, 180 ⁇ m, 190 ⁇ m, 200 ⁇ m, 225 ⁇ m, 250 ⁇ m, 275 ⁇ m, 300 ⁇ m, 325 ⁇ m, 350 ⁇ m, 375 ⁇ m, 400 ⁇ m, 425 ⁇ m, 450 ⁇ m, 475 ⁇ m, and about 500 um and all particle sizes therebetween.
  • P-CDP is grafted or bonded onto CMC having a median particle size of about 50 um.
  • CMC is commercialized as AvicelTM.
  • the P-CDP is grafted or bonded onto a polymeric substrate other than cellulose, as described herein, in which the surface is treated to produce surface functional groups as disclosed herein, such as hydroxyl groups.
  • the P-CDP-substrate complex e.g., CD-TFN@CMC
  • has a polymer thickness i.e., the thickness of the porous P-CDP particles on the surface of the substrate of between about 1 nm to about 2000 nm.
  • P-CDP-substrate complex e.g., CD-TFN@CMC
  • CD-TFN@CMC has a polymer thickness of about 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40, 50, 60, 70 , 80, 90, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1050, 1100, 1150, 1200, 1250, 1300, 1350, 1400, 1450, 1500, 1550, 1600, 1650, 1700, 1750, 1800, 1850, 1900, 1950, to about 2000 nm.
  • P-CDP- substrate complex e.g., CD-TFN@CMC
  • P-CDP-substrate complex e.g., CD-TFN@CMC
  • a having a lower thickness e.g., less than 1000 nm
  • the P-CDP-substrate complex has a contaminant adsorption capacity of up to 500 mg contaminant/g CD.
  • the adsorption capacity may be up to about 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400, 410, 420, 430, 440, 450, 460, 470, 480, 490, to about 500 mg contaminant/g CD.
  • the adsorption capacity is up to about 200 mg contaminant/g CD.
  • the contaminant is bisphenol A (BP A).
  • the cyclodextrin is ⁇ -cyclodextrin.
  • the aryl crosslinking moiety is TFN. In other embodiments, the aryl crosslinking agent is any aryl crosslinking agent disclosed herein.
  • the P-CDP-substrate complex (e.g., CD-TFN@CMC) has an equilibrium contaminant adsorption capacity of up to 500 mg contaminant/g CD.
  • the equilibrium adsorption capacity may be up to about 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400, 410, 420, 430, 440, 450, 460, 470, 480, 490, to about 500 mg contaminant/g
  • the equilibrium adsorption capacity is up to about 200 mg contaminant/g CD.
  • the contaminant is bisphenol A (BP A).
  • the cyclodextrin is ⁇ -cyclodextrin.
  • the aryl crosslinking moiety is TFN. In other embodiments, the aryl crosslinking agent is any aryl crosslinking agent disclosed herein.
  • the P-CDP-substrate complex (e.g., CD-TFN@CMC) has a relaxation time of less than 2 minutes. In some embodiments, the P-CDP-substrate complex (e.g., CD-TFN@CMC) has a relaxation time of about 0.99 ⁇ 0.03 s. As will be appreciated by a skilled artisan, where processes with high relaxation times slowly reach equilibrium, while processes with small relaxation times adapt to equilibrium quickly.
  • the contaminant is BPA.
  • the cyclodextrin is ⁇ -cyclodextrin.
  • the aryl crosslinking moiety is TFN.
  • any of the P-CDP materials disclosed herein i.e., P-CDP materials prepared by reacting any of the disclosed aryl moieties with any of the disclosed cyclodextrins
  • the P-CDP is homogenously distributed on the CMC surface.
  • the aryl linker is TFN.
  • the median particle size is about 50 ⁇ . In other embodiments, the median particle size is from about 1 - about 250 ⁇ .
  • CMC can also be distinguished by a particle shape known to impact flow characteristics among other things.
  • a non-limiting list of particle shapes includes spherical (round-shaped), rod-shaped, and needle-like. Particles can also be described as flat, flat and elongated, or be characterized by their aspect ratio.
  • the CMC has a spherical particle shape.
  • the CMC is present in the form of agglomerates of smaller CMC particles. Such CMC agglomerates can have particle sizes in the range of 200 ⁇ up to about 2 mm.
  • the particle sizes of CMC agglomerates can be about 200 ⁇ , about 300 ⁇ , about 400 ⁇ , about 500 ⁇ , about 600 ⁇ , about 700 ⁇ , about 800 ⁇ , about 900 ⁇ , about 1 mm, about 1.2 mm, about 1.3 mm, about 1.4 mm, about 1.5 mm, about 1.6 mm, about 1.7 mm, about 1.8 mm, about 1.9 mm, or about 2 mm, inclusive of all ranges therebetween.
  • the P-CDP is grafted or bonded onto CMC via an aryl moiety of formula (I), (II), (III), or (IV) as described herein. In some embodiments, the P-CDP is
  • the P-CDP is grafted or bonded onto CMC via DFB or the decachloro analog thereof.
  • P-CDP is grafted or bonded onto CMC via an aryl linker, and the aryl linker is homogenously distributed on the CMC crystal.
  • the aryl linker is TFN.
  • the aryl linker is DFB.
  • the median particle size is about 100 nm.
  • examples of other potential support materials include those materials described above, such as activated carbon, graphene oxide, as well as silica and alumina.
  • the supported P-CDP materials disclosed herein are in the form of particles having a narrow dispersity of particle sizes.
  • the particle size distribution has a low relative span of about 5 or less, where relative span is defined by the ratio (D9o-Dio)/Dso, where D90, D50, and D10 are, respectively the diameters at which 90%, 50%, and 10% of the particles in the distribution have a smaller diameter.
  • Suitable spans are no more than 5, 4.5, 4, 3.5, 3, 2.5, 2, 1, 0.9, 0.8, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, or 0.1, including all ranges therebetween.
  • the P-CDP may be grafted or bonded onto cellulose nanocrystals (CNCs).
  • CNCs are the crystalline regions of cellulose microfibrils obtained after mechanical, chemical, and enzyme treatments. Depending on the source and preparation method, CNCs are available with lengths ranging from about 1-1000 nm and widths ranging from about 3-50 nm, inclusive of all values therebetween.
  • the CNCs have a length of about 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, to about 1000 nm.
  • the CNCs have a width of about 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, or about 50.
  • the P-CDP-CNC substrates may be 2-3 times the size (length and width) as the unbound CNCs.
  • the CNCs are further characterized by aspect ratio values (L/D) ranging from about 2-100 (George, J., et al., Cellulose nanocrystals: synthesis, functional properties, and applications. Nanotechnology, Science and Applications. 2015;8:45-54).
  • the CNCs have an aspect ratio of about 2, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, or 100.
  • the P-CDP is grafted or bonded onto CNC via an aryl moiety of formula (I), (II), (III), or (IV) as described herein. In some embodiments, the P-CDP is
  • the P-CDP is grafted or bonded onto CNC via DFB or the decachloro analog thereof.
  • P-CDP is grafted or bonded onto CNC via an aryl linker, and the aryl linker is homogenously distributed on the CNC crystal.
  • the aryl linker is TFN.
  • the aryl linker is DFB.
  • the median particle size is about 100 nm.
  • CNC can also be distinguished by particle shape known to impact flow characteristics among other things. A non-limiting list of particle shapes includes spherical (round-shaped), rod-shaped, and needle-like. Particles can also be described as flat, flat and elongated, or be characterized by their aspect ratio. In some embodiments, the CNC has an aspect ratio of between about S to about 100.
  • the aspect ratio may be about S, 10, IS, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95 to about 100.
  • the CNC aspect ratio is about 20-25.
  • the CNCs are needle-like.
  • the CNC is present in the form of agglomerates of smaller CNC particles. Such CNC agglomerates can have particle sizes which are 5-100 times larger than the sizes of the individual particles, depending on the sizes and number of the particles constituting the aggregates.
  • the substrate is a fabric or fiber.
  • the present disclosure provides a composition comprising a P-CDP grafted or bonded (e.g., chemically or mechanically) to a fiber.
  • the P-CDP is grafted or bonded onto a fiber via an aryl moiety of formula (I), ( ⁇ ), (HQ, or (TV), as described herein.
  • the fiber is a nonwoven fiber.
  • the present disclosure provides a composition comprising a P-CDP grafted or bonded (e.g., chemically, adhesively, or mechanically) to a fabric.
  • the P-CDP is grafted or bonded onto a fabric via an aryl moiety of formula (I), ( ⁇ ), (HI), or (IV).
  • Fibers suitable for use include, but are not limited to fibers comprising any of the polymers disclosed herein, for example fibers made from highly oriented polymers, such as gel-spun ultrahigh molecular weight polyethylene fibers (e.g., SPECTRA® fibers from Honeywell Advanced Fibers of Morristown, N.J. and DYNEMA® fibers from DSM High Performance Fibers Co.
  • highly oriented polymers such as gel-spun ultrahigh molecular weight polyethylene fibers (e.g., SPECTRA® fibers from Honeywell Advanced Fibers of Morristown, N.J. and DYNEMA® fibers from DSM High Performance Fibers Co.
  • melt-spun polyethylene fibers e.g., CERTRAN® fibers from Celanese Fibers of Charlotte, N.C.
  • melt-spun nylon fibers e.g., high tenacity type nylon 6,6 fibers from Invista of Wichita, Kans.
  • melt-spun polyester fibers e.g., high tenacity type polyethylene terephthalate fibers from Invista of Wichita, Kans.
  • sintered polyethylene fibers e.g., TENSYLON® fibers from ITS of Charlotte, N.C.
  • Suitable fibers also include those made from rigid-rod polymers, such as lyotropic rigid-rod polymers, heterocyclic rigid-rod polymers, and thermotropic liquid-crystalline polymers. Suitable fibers also include those made from regenerated cellulose including reactive wet spun viscose rayon (Viscose from Birla of India or Lenzing of Austria), cuproammonium based rayon (Cupro® Bemberg from Asahi Kasei of Japan), or air gap spun from NMMO solvent (Tencel® from Lenzing of Austria).
  • rigid-rod polymers such as lyotropic rigid-rod polymers, heterocyclic rigid-rod polymers, and thermotropic liquid-crystalline polymers.
  • Suitable fibers also include those made from regenerated cellulose including reactive wet spun viscose rayon (Viscose from Birla of India or Lenzing of Austria), cuproammonium based rayon (Cupro® Bemberg from Asahi Kasei of Japan), or air gap spun from NMMO solvent (Tencel
  • Suitable fibers made from lyotropic rigid-rod polymers include aramid fibers, such as poly(p-phenyleneterephthalamide) fibers (e.g., KEVLAR® fibers from DuPont of Wilmington, Del . and TWARON® fibers from Teijin of Japan) and fibers made from a 1 : 1 copolyterephtnalamide of 3,4'-diaminodiphenylether and p-phenylenediamine (e.g., TECHNORA® fibers from Teijin of Japan).
  • aramid fibers such as poly(p-phenyleneterephthalamide) fibers (e.g., KEVLAR® fibers from DuPont of Wilmington, Del . and TWARON® fibers from Teijin of Japan) and fibers made from a 1 : 1 copolyterephtnalamide of 3,4'-diaminodiphenylether and p-phenylenediamine (e.g.,
  • Suitable fibers made from heterocyclic rigid-rod polymers include poly(p-phenylene-2,6-benzobisoxazole) fibers (PBO fibers) (e.g., ZYLON® fibers from Toyobo of Japan), poly(p-phenylene-2,6- benzobisthiazole) fibers (PBZT fibers), and poly[2,6-diimidazo[4,5-b:4',5'-e]pyridinylene-l,4- (2,S-dihydroxy)phenylene] fibers (PIPD fibers) (e.g., MS® fibers from DuPont of Wilimington, Del.).
  • PBO fibers poly(p-phenylene-2,6-benzobisoxazole) fibers
  • PBZT fibers poly(p-phenylene-2,6- benzobisthiazole) fibers
  • PIPD fibers poly[2,6-diimidazo[4,5-b:4',5'-e]
  • Suitable fibers made from thermotropic liquid-crystalline polymers include poly(6-hydroxy-2-napthoic acid-co-4-hydroxybenzoic acid) fibers (e.g., VECTRAN® fibers from Celanese of Charlotte, N.C.). Suitable fibers also include carbon fibers, such as those made from the high temperature pyrolysis of rayon, poly aery lonitrile (e.g., OPF® fibers from Dow of Midland, Mich.), and mesomorphic hydrocarbon tar (e.g., THORNEL® fibers from Cytec of Greenville, S.C.).
  • poly(6-hydroxy-2-napthoic acid-co-4-hydroxybenzoic acid) fibers e.g., VECTRAN® fibers from Celanese of Charlotte, N.C.
  • Suitable fibers also include carbon fibers, such as those made from the high temperature pyrolysis of rayon, poly aery lonitrile (e.g., OPF® fibers from Dow of Midland, Mich
  • the yarns or fibers of the textile layers comprise fibers selected from the group consisting of gel-spun ultrahigh molecular weight polyethylene fibers, melt-spun polyethylene fibers, melt-spun nylon fibers, melt-spun polyester fibers, sintered polyethylene fibers, aramid fibers, PBO fibers, PBZT fibers, PJPD fibers, po1y(6-hydroxy-2-napthoic acid-co-4-hydroxybenzoic acid) fibers, carbon fibers, and combinations thereof.
  • the P-CDP materials of the present disclosure can be adhered to such fibers by means of a suitable binder polymer as described herein, or chemically bonded to such fibers by functionalizing the surface of the fibers as described herein (e.g., surface oxidation to produce surface hydroxyl groups) and either forming the P-CDP in situ on the fiber surface, or by reacting a suitably functionalized P-CDP directly with the functionalized fiber surface, or indirectly via a linker moiety as described herein.
  • a suitable binder polymer as described herein
  • chemically bonded to such fibers by functionalizing the surface of the fibers as described herein (e.g., surface oxidation to produce surface hydroxyl groups) and either forming the P-CDP in situ on the fiber surface, or by reacting a suitably functionalized P-CDP directly with the functionalized fiber surface, or indirectly via a linker moiety as described herein.
  • the fibers may be converted to nonwovens (either before or after attachment of the P-CDP) by different bonding methods.
  • Continuous fibers can be formed into a web using industry standard spunbond type technologies while staple fibers can be formed into a web using industry standard carding, airlaid, or wetlaid technologies.
  • Typical bonding methods include: calendar (pressure and heat), thru-air heat, mechanical entanglement, hydrodynamic entanglement, needle punching, and chemical bonding and/or resin bonding.
  • the calendar, thru-air heat, and chemical bonding are the preferred bonding methods for the starch polymer fibers. Thermally bondable fibers are required for the pressurized heat and thru-air heat bonding methods.
  • the fibers of the present invention may also be bonded or combined with other synthetic or natural fibers to make nonwoven articles.
  • the synthetic or natural fibers may be blended together in the forming process or used in discrete layers.
  • Suitable synthetic fibers include fibers made from polypropylene, polyethylene, polyester, polyacrylates, and copolymers thereof and mixtures thereof.
  • Natural fibers include cellulosic fibers and derivatives thereof. Suitable cellulosic fibers include those derived from any tree or vegetation, including hardwood fibers, softwood fibers, hemp, and cotton. Also included are fibers made from processed natural cellulosic resources such as rayon.
  • the fibers of the present invention may be used to make nonwovens, among other suitable articles.
  • Nonwoven articles are defined as articles that contains greater than 15% of a plurality of fibers that are continuous or non-continuous and physically and/or chemically attached to one another.
  • the nonwoven may be combined with additional nonwovens or films to produce a layered product used either by itself or as a component in a complex combination of other materials.
  • Preferred articles are disposable, nonwoven articles.
  • the resultant products may find use in filters for air, oil and water, textile fabrics such as micro fiber or breathable fabrics having improved moisture and odor absorption and softness of wear; electrostatically charged, structured webs for collecting and removing dust and pollutants; medical textiles such as surgical drapes, wound dressing, bandages, dermal patches; textiles for absorbing water and oil for use in oil or water spill clean-up, etc..
  • the articles of the present invention may also include disposable nonwovens for hygiene and medical applications to absorb off-odors. Hygiene applications include such items as wipes; diapers, particularly the top sheet or back sheet; and feminine pads or products, particularly the top sheet
  • the yams or fibers of the textile layers can have any suitable weight per unit length (e.g., denier). Typically, the fibers have a weight per unit length of about 1 to about 50 denier per filament (1 to about 50 g per 9000 meters).
  • the yarns contain a plurality of filaments from 10 to about 5000.
  • the P-CDP is adhesively bound to a substrate such as a fiber or fabric via a binder. In some embodiments, the P-CDP is coated on a substrate such as a fiber or fabric via a binder. In some embodiments, the P-CDP is bound to or coated on a substrate such as a fiber or fabric via a binder by introducing the surface to stable aqueous dispersions of the P-CDP particles in conjunction with binders.
  • the P-CDP particle dispersion may be 1- 50% by weight and a polymeric binder material may be present in an emulsion or solution in 1-50% by weight. For example, the P-CDP particle dispersion may be present at about 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
  • the polymeric binder material may be present in an emulsion or solution at about 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
  • auxiliary agents can be used as minor components by weight to control the wetting by the substrate (wetting agent), solution foaming or de-foaming, softening agent for substrate hand, and/or catalyst for binder curing.
  • a variety of coating techniques known in the art can be applied, such as: dip and squeeze, solution casting, foam coating, or spraying of the formulated solution onto the substrate of interest.
  • Substrates include, but are not limited to: woven, knit or nonwoven fabrics, continuous filament yarns, spun yarns, spun fibers, wood surfaces, and thermoplastic surfaces.
  • the combined system upon application of the formulated solution to the substrate, the combined system will be dried to remove the water solvent at which time an even film of P- CDP particles mixed with polymeric binder will be present. During the drying process, the binder material present as an emulsified polymer will flow together and become a continuous phase.
  • the P-CDP particles may be held in place through mechanical means or adhesion to the binder continuous phase only, or additional covalent linkages could be present if a cure-able binder is selected. Such covalent linkages could extend the underlying substrate which would further increase the durability of the P-CDP particle coating.
  • the resultant P-CDP particle film conforms to the underlying substrate and is durable to physical abrasion, and washing such that the article can be deployed. Furthermore, if the P-CDP particles have access to the aqueous or vapor phase within the coating, they will demonstrate the same selective and high affinity small molecule adsorption characteristics as the monolithic particles. Such form factors can be converted into filter cartridges, pleated filters, nonwoven needlepunched filters, hygienic nonwovens, and apparel.
  • binders include, but are not limited to, latex binders, isocyanate binders (e.g., blocked isocyanate binders), acrylic binders (e.g., nonionic acrylic binders), polyurethane binders (e.g., aliphatic polyurethane binders and polyether based polyurethane binders), epoxy binders, urea/formaldehyde resins, melamine/formaldehyde resins, polyvinylalcohol (PvOH) resins (disclosed in US Patent No.
  • latex binders e.g., isocyanate binders
  • acrylic binders e.g., nonionic acrylic binders
  • polyurethane binders e.g., aliphatic polyurethane binders and polyether based polyurethane binders
  • epoxy binders urea/formaldehyde resins, melamine/formaldehyde
  • the P-CDP particles are mechanically bound to a surface, such as a fibrillating fiber.
  • Fibrillating fibers are used to create high surface area, extended networks which can wrap around and entrap particulate matter.
  • Fibers such as fibrillating polyolefin (such as Mitsui Fybrel®), fibrillating regenerated cellulose (such as Lenzing TencelTM) or fibrillating acrylic (such as Sterling Fibers CFFTM) are deployed in wet laid processes to create specialty papers which excellent mechanical properties, good wet strength, and the ability to hold particulate matter (US Patent No. 4,565,727, which is hereby incorporated by reference in its entirety), Onxy Specialty Papers, Helsa Corporation, and others.
  • powdered activated carbon particles with diameters greater than 5 microns have been loaded into specialty carbon papers that are deployed in liquid and vapor filtration applications such as point of use water filters or cabin air filters.
  • an aqueous dispersion or slurry blend of short cut fibers such as wood pulp, polyester, nylon, or polyolefin
  • fibrillating fibers such as Fybrel®, TencelTM, or CFFTM
  • particle powder material e.g., under high shear
  • This mixture can then be rapidly passed through a nonwoven mesh or screen to deposit a wet laid nonwoven web.
  • This web is dried (e.g., in hot air oven or on heated rolls) to remove the water carrier. Further bonding may be achieved through cold or hot calendaring either in flat format or with a patterned roll to produce the bonded specialty paper.
  • the particulate powder used can be a dispersion of P-CDP particulates of defined particle size. Particulate size can be set via grinding and milling techniques as defined previously.
  • the particulate loading in the finished nonwoven can be as high as 60% by weight.
  • the particulate can be used alone or blended with other particulate such as powdered activated carbon. Additional chemical binders, such as those described herein, may be used to alter or enhance the properties of the paper and will be applied as one skilled in the art.
  • the resultant powder loaded papers are amenable to a high loading of P-CDP adsorbent particles in a convenient paper filter form factor for water and/or air filtration.
  • the paper can be used in the flat form, cut into a variety of shapes, or pleated and bonded into a filter media cartridge.
  • the P-CDP particles are mechanically entangled in yarn (e.g., continuous filament yarn). In some embodiments, the P-CDP particles are mechanically entangled in continuous filament yarn. As will be readily apparent to a skilled artisan, a special subset of yarn finishing enables the mechanical binding of particulate matter within a continuous filament yarn in some circumstances.
  • a yarn e.g., continuous filament
  • a typical synthetic polymer such as polyethyleneterephthalate (PET) or polyamide (nylon 6 or nylon 6,6) that bears microfibrillating tendencies on each filament surface
  • the P-CDP particles of the present disclosure can be incorporated into the yarn in a variety of ways.
  • One non-limiting example is to apply a dispersion of the P-CDP particles of interest via dip coating or oil roll application onto a moving yarn bundle during the false twist texturing process.
  • the filaments are mechanically separated via twisting, first in one direction followed by the opposite direction. After the first twisting, the filaments are individualized and void space is presented within the yarn bundle.
  • the dispersion solution is applied at this point within the process after which the bundles are twisted back to the standard orientation and the yarn heated to dry the solution. This process enables the application of dispersion particles within the yarn bundles that are held in place by the continuous filaments and microfibrils emanating from the continuous filament surface.
  • microcapsules US Patent Publication No. 2005/0262646 Al, which is hereby incorporated by reference in its entirety
  • metallic silver microparticles US Patent Publication No. 2015/0361595 Al, which is hereby incorporated by reference in its entirety
  • US Patent Publication No. 2006/0067965 Al which is hereby incorporated by reference in its entirety
  • these textured and particle loaded yarns may then be processed through typical means to create knit and woven fabrics for use in apparel, upholstery, medical, displays, or other uses.
  • the P-CDP particles are incorporated into thermally-bonded, particulate pressed forms.
  • a common form factor for powdered absorbent material is in thermally-bonded pressed forms.
  • Such form factors can contain as high as 95% by weight P- CDP particles, with the addition of fibrillating fibers (Fybrel®, TencelTM, or CFFTM), sometimes inorganic materials such as attapulgite clays, and finally an organic binder material (most typically cellulose esters and similar derivatives) to create a porous composite structure with adequate mechanical strength and particulate holding efficiency for medium pressure filtration applications such as faucet filters and refrigerator filters (US Patent Nos. 5,488,021 and 8,167, 141, both of which are hereby incorporated by reference in their entireties).
  • P-CDP dry particles or dispersion can be used in place of or blended with other adsorbent materials to form such a composite adsorbent P-CDP particulate-containing forms as described above.
  • the solid dry components may be dry blended, optionally including dry P-CDP particles and organic binder powder with or without inorganic clays and/or fibrillating fibers.
  • an aqueous dispersion of P-CDP particles may be diluted with water and added to the mixture. Water is added (e.g., in 80-150 wt%) and the mixture is blended (e.g., under high shear) to create a plastic material. This material may be formed into the desired form factor, dried and cured at temperatures ranging from 125 to 250 °C. This final form factor presents the P-CDP adsorbent particles in a form factor common to and useful for point of use water filters.
  • the P-CDP particles are incorporation into solution processed polymer form factors.
  • a variety of means are available to produce filter membrane materials. For example, via solution cast films or extrude hollow fibers of membrane polymers where controlled coagulation creates a condensed film of controlled pore size.
  • a polymer such as cellulose acetate dissolved in a water miscible organic solvent such as MP, DMSO, or THF is used. This solution can be cast as a film into a water bath which causes rapid coagulation of the cellulose acetate polymer and densification of the film.
  • These films may be processed on roll to roll equipment and many layers are wrapped to create a spiral wound membrane filter for use in micro-filtration, ultra-filtration, gas filtration, or reverse osmosis applications.
  • common polymers used include polyamides, polyolefins, polysulfones, polyethersulfones, polyvinylidene fluoride, and similar engineered thermoplastics. It is also possible to extrude hollow fibers into the aqueous solution to create membrane fibers through the phase inversion process that are known as hollow-fiber membranes commonly used for dialysis, reverse osmosis, and desalination applications.
  • the P-CDP particle matter is incorporated into membrane material to enhance the performance of the membrane materials.
  • membrane material For example, it is possible to have present in the aqueous coagulation bath a small quantity of P-CDP particle dispersion that will become incorporated into the dense portions or porous portions of the membrane during the phase inversion process.
  • a second manner to incorporate the P-CDP particles into the membrane is the incorporation of a small amount of well-dispersed particles into the organic solution of the membrane polymer that become encapsulated in the membrane following coagulation.
  • the production of P-CDP loaded polymer forms may be enabled.
  • the P-CDP particle incorporation acts to enhance the micropollutant removal of the membrane system.
  • the P-CDP particles are incorporated into melt extruded thermoplastics (e.g., fibers and molded parts). Having access to small diameter dry powder P- CDP particle material of low polydispersity enables its incorporation into melt processed polymer forms including fibers and molded parts.
  • Typical thermoplastics of use include polyethyleneterephtalate, co-polyesters, polyolefins, and polyamides.
  • Typical extrusion temperatures are between 250-300 °C and therefore P-CDP particle stability to those temperatures either under air (most preferred) or inert atmosphere is required.
  • Single or twin- screw extrusion is used to blend and mix the powdered material at elevated temperatures under shear with the thermoplastic in up to five weight percent.
  • the blended components can be extruded through small round or otherwise shaped orifices and drawn to produce fibers bearing the particulate matter linear densities ranging from 1 to 20 denier per filament.
  • a common particle added to most thermoplastic fibers is titanium dioxide added to whiten and deluster the fiber.
  • the P-CDP particles will be added in a similar fashion. In the most ideal embodiment, the P-CDP particles will migrate to the surface of the fibers and bloom due to their higher surface energy such that a portion of the particles are present and accessible by the vapor or liquid phase.
  • it instead of extruding the polymer melt through small orifices, it can be blow molded or otherwise melt processed to produce a plastic part. This plastic part will also bear the P-CDP particles that bloom to the surface and become active for the removal of small molecule micropollutants from the vapor and liquid phase.
  • the methods used to affix the adsorbent to the substrate or support are sufficiently robust so as to withstand the use conditions. Further, the means of attachment to the substrate should not interfere with or block the adsorption mechanism of the adsorbent.
  • the adsorbents disclosed herein can be attached to supports, as described herein, so that the resulting performance characteristics are only minimally affected by the attachment method.
  • the supported polymeric materials of the present invention provide performance characteristics which are at least 50% of the same performance characteristic which would be provided by the same composition of adsorbent prepared without a support material (based on equivalent amounts of the adsorbent) when measured under identical conditions.
  • CD-TFN material grafted to microcrystalline cellulose would have at least 50% of one or more of a particular performance characteristic found in unsupported CD-TFN (normalized to unit weight of CD-TFN in each material) tested under the same conditions.
  • the performance characteristic can be the amount of uptake (adsorption capacity) of a particular pollutant, measured as the milligrams of pollutant adsorbed per gram P-CDP particle under particular conditions.
  • the performance characteristic can be the equilibrium adsorption capacity (q e ), defined as discussed herein as:
  • q max (mg pollutant/g adsorbent) is the maximum adsorption capacity of the sorbent for a particular pollutant at equilibrium
  • K L (mol "1 ) is the equilibrium constant
  • C e (mM) is the pollutant concentration at equilibrium.
  • the performance characteristic is the rate at which equilibrium adsorption of a pollutant is reached (rate of equilibrium adsorption for a particular adsorbent. This rate can be expressed as the time required for a supported P-CDP of the present disclosure (or the comparator unsupported P-CDP) to reach equilibrium for a particular adsorbed species (or pollutant).
  • the performance characteristic is the rate at which competing adsorbents sequester pollutants.
  • Competing adsorbents may be unsupported P- CDPs as described herein, or other agents, such as activated carbons (powdered or granular), ion-exchange resins, and specialized resins used for solid-phase microextraction (e.g., HLB).
  • the performance of the supported P-CDP of the present disclosure is at least about 50%, 60%, 70%, 80%, 90%, 100%, 120%, 140%, 160%, 180%, 200%, 220%, 240%, 260%, 280%, 300%, 350%, 400%, 450%, 500% or greater, inclusive of all values, ranges, and subranges therebetween compared to unsupported P-CDP of the same composition, tested under essentially the same conditions, e.g., with the same pollutant, temperature, pressure, exposure time, etc.
  • the performance characteristics of the present disclosure can be measured, for example based on bisphenol A or another suitable specie as disclosed herein, by a variety of methods which will be readily apparent to a skilled artisan.
  • the contaminant may be measured at initial concentrations of BP A or another suitable specie ranging from 1 ppb (or 1 microgram/L or 5 nM) to 1 ppt (or 1 g/L or 5 mM) in any aqueous sample, including but not limited to drinking water, wastewater, ground water, aqueous extracts from contaminated soils, landfill leachates, purified water, or other waters containing salts, or other organic matter.
  • the pH may be range from 0-14.
  • the pH may be 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, or 14, inclusive of all ranges therebetween.
  • the performance characteristics may be measured substantially as described herein (e.g., in Examples 1 and 2), with routine modifications (such as temperature and pressure) also being envisioned.
  • the present disclosure provides an article of manufacture comprising one or more P-CDP-substrate complexes (e.g., CD-TFN@CMC) or a composition comprising one or more P-CDP-substrate complexes disclosed herein.
  • P-CDP-substrate complexes e.g., CD-TFN@CMC
  • composition comprising one or more P-CDP-substrate complexes disclosed herein.
  • the article of manufacture is protective equipment.
  • the article of manufacture is clothing.
  • the article of manufacture is clothing comprising one or more porous polymeric material or a composition comprising one or more P-CDP-substrate complexes (e.g., clothing such as a uniform at least partially coated with the porous polymeric material or composition).
  • the article is filtration medium comprising one or more P-CDP-substrate complexes or a composition comprising one or more p P-CDP-substrate complexes.
  • the filtration medium can be used as a gas mask filter.
  • the article is a gas mask comprising the filtration medium.
  • the article is an extraction device.
  • the article is a solid phase microphase (SPME) extraction device comprising the P-CDP-substrate complexes (or a composition comprising the porous polymeric material), where the P-CDP-substrate complexes is the extracting phase the device.
  • SPME solid phase microphase
  • the article is a device for a solid-phase extraction of polar and semi-polar organic molecules.
  • the device comprises the P-CDP-substrate complexes (or a composition comprising the porous polymeric material) instead of HLB media (hydrophilic/lipophilic balanced).
  • the article with the P-CDP-substrate complexes outperforms the HLB media.
  • the article is a device for liquid filtration of polar and semi- polar organic molecules.
  • the device comprises the P-CDP-substrate adhered within a fibrous web (as disclosed in U.S. Patent No. 7,655, 112, which is hereby incorporated by reference in its entirety).
  • Other embodiments include the device comprising P-CDP powders fused via thermoplastic binder polymer to create porous monolithic filtration media (as disclosed in U. S. Patent No. 4,753,728, which is hereby incorporated by reference in its entirety).
  • the present disclosure provides methods of making the porous polymeric materials.
  • the porous polymeric material is made by a method disclosed herein.
  • the P-CDPs of the present disclosure comprise cyclodextrin moieties crosslinked with a suitable crosslinking agent that provides a porous, relatively high surface area polymeric material as described herein.
  • suitable crosslinking agents can include any, at least difunctional compound capable of reaction with any of the cyclodextrins disclosed herein to form a crosslinked network of cyclodextrin moieties.
  • the crosslinking agent should be relatively rigid and inflexible, such as the aryl crosslinkers disclosed herein.
  • crosslinking agents other than aryl crosslinkers can be used, provided they have similar ranges of flexibility.
  • crosslinkers which form crosslinks with no more than about 6 "rotable" bonds (e.g., 2, 3, 4, 5, or 6 rotable bonds) may be suitable.
  • the term rotable refers to bonds in the crosslink having a calculated rotational barrier which is no more than about 80 kJ/mol (298 K), for example in the range of about 10-30 kJ/mol.
  • Such crosslinks have limited mobility, which is believed to aid in the formation of high porosity and surface area materials.
  • a method of making a porous polymeric material comprises contacting a cyclodextrin with a crosslinking agent, such as an aryl compound such that the crosslinking agent (e.g., aryl compound) crosslinks at least two cyclodextrin moieties.
  • the crosslinking agent comprises at least two groups (e.g., halide groups, if the crosslinking agent is an aryl compound) that can react with the cyclodextrin to form covalent (e.g., aryl ether bonds).
  • the reaction between a cyclodextrin and an aryl compound is a nucleophilic aromatic substitution reaction.
  • Suitable aryl compounds that react to form aryl crosslinking moieties include the moieties shown in FIG 6, where Ar is an aryl moiety. Two or more of the functional groups (e.g., halide, -NO2, and/or -CF3 groups) react to form an aryl crosslinking group.
  • the aryl compound is tetrafluoroterephthalonitrile, trichloroterephthalonitrile, dichloroterephthalonitrile, monochloroterephthalonitrile, decafluorobiphenyl (DFB), or octafluoronaphthalene.
  • the aryl compound is tetrafluoroterephthalonitrile.
  • a method of making a P-CDP-substrate complex comprising contacting P-CDPs with one or more substrates, under conditions sufficient to bond or graft the P-CDPs to the one or more substrates substrate (e.g., covalently, adhesively, or mechanically), for example by any of the methods described herein.
  • the present disclosure provides a method of purifying an aqueous sample comprising one or more organic pollutants, the method comprising contacting the aqueous sample with the supported porous polymeric material of claim 1, such that at least 50% to at least 99% of the one or more organic pollutants are removed from the aqueous sample.
  • the one or more cyclodextrin moieties are ⁇ -cyclodextrin moieties.
  • the supported porous polymeric material is CD-TFN@CMC.
  • said contacting is by flowing the aqueous phase across, over, around, or through the supported porous polymeric material.
  • the aqueous sample is contacted with the P-CDP-substrate complex under static conditions for an incubation period and after the incubation period the aqueous sample is separated from the porous polymeric material.
  • the aqueous sample is drinking water, wastewater, ground water, aqueous extracts from contaminated soils, or landfill leachates.
  • a method of purifying an aqueous sample comprising one or more organic compounds comprising contacting the aqueous sample with a P-CDP-substrate complex (e.g., CD-TFN@CMC) disclosed herein such that, for example, at least 50% to at least 99% of the one or more pollutants is bound to one or more of the cyclodextrin (e.g., ⁇ -cyclodextrin) moieties of the porous polymeric material.
  • a P-CDP-substrate complex e.g., CD-TFN@CMC
  • the cyclodextrin e.g., ⁇ -cyclodextrin
  • the aqueous sample contacted with the P-CDP-substrate complex under static conditions for an incubation period and after the incubation period the aqueous sample is separated (e.g., by filtration) from the porous polymeric material.
  • the method can be used to purify aqueous samples such as drinking water, wastewater, ground water, aqueous extracts from contaminated soils, and landfill leachates.
  • a method of determining the presence or absence of compounds (e.g., organic compounds) in a sample comprises: a) contacting the sample with a P-CDP- substrate complex (e.g., CD-TFN@CMC) disclosed herein for an incubation period (e.g., 1 minute or less, 5 minutes or less, or 10 minutes or less); b) isolating the P-CDP-substrate complex from a) from the sample; and c) heating the P-CDP-substrate complex material from b) or contacting the P-CDP-substrate complex from b) with a solvent (e.g., methanol) such that at least part of the compounds are then released by the P-CDP-substrate complex; and d) determining the presence or absence of any compounds, wherein the presence of one or more compounds correlates to the presence of the one or more compounds in the sample, or isolating (e.g., by filtration) the compounds
  • a solvent e
  • the determining is carried out by gas chromatography or mass spectrometry.
  • the sample is a food or beverage (e.g., milk, wine, fruit juice (e.g., orange juice, apple juice, and grape juice), or an alcoholic beverage (e.g., beer and spirits)) and the compounds are volatile organic compounds.
  • the P- CDP-substrate complex (or a composition comprising the porous polymeric material) can be the extracting phase in a solid phase microextraction (SPME) device.
  • SPME solid phase microextraction
  • a method for removing compounds (e.g., organic compounds) from a sample comprises: a) contacting the sample with a P-CDP-substrate complex (e.g., CD- TFN@CMC) disclosed herein for an incubation period such that at least some of the compounds are sequestered in the polymer; b) isolating the P-CDP-substrate complex from a) from the sample; c) heating the P-CDP-substrate complex from b) or contacting the P-CDP- substrate complex from b) with a solvent (e.g., methanol) such that at least part of the compounds are released by the porous polymeric material; and d) optionally, isolating at least a portion of the compounds.
  • a P-CDP-substrate complex e.g., CD- TFN@CMC
  • a solvent e.g., methanol
  • the compounds can be organic compounds.
  • the compounds can be desirable compounds such as flavorants (e.g., compounds that impact the palatability of foods) or pharmaceutical compounds (or pharmaceutical intermediates), contaminants (e.g., PCBs, PBAs, etc.), and/or adulterants.
  • the cyclodextrins are chiral.
  • a chiral compound is sequestered, detected, and/or isolated.
  • a chiral column e.g., a preparative-scale or analytical-scale column is packed with a chiral porous polymeric material or composition comprising chiral porous polymeric material
  • the P-CDP-substrate complex can be regenerated (e.g., for reuse in the methods).
  • the porous polymeric material is regenerated by heating and/or exposure to solvent (e.g., alcohols such as methanol or ethanol, and aqueous mixtures thereof).
  • the compounds of the present disclosure can be prepared from readily available starting materials by conventional methods and processes below. Different methods may also be used for manufacturing the inventive compounds, unless otherwise specified as typical or optimal process conditions (i.e., reaction temperature, time, molar ratio of reactants, solvents, pressures, etc.).
  • the optimal reaction conditions may vary depending on the particular reactants or solvents employed. Such conditions, however, can be determined by the skilled in the art by conventional optimization process.
  • the P-CDP materials referenced herein can be synthesized via nucleophilic aromatic substitution that crosslinks, for example, ⁇ , ⁇ , or ⁇ -cyclodextrin, microcrystalline cellulose and a fluorinated aromatic compound of FIG. 6.
  • a variety of bases can be used to facilitate the reaction including, but not limited to: K2CO3, KHCO3, K3PO4, K2HPO4, KH2PO4, KH, NaH, Na 2 C0 3 , NaHCC-3, CS2CO3, NEt 3 , iPrNEt 2 , pyridine, and DABCO.
  • Solvents include but are not limited to THF, DMSO, CH3CN, 1,4-dioxane, water, dimethylacetamide (DMA), DMF, and mixtures thereof. A range of temperatures from room temperature to 180 °C or greater can be employed.
  • Grafted ⁇ -cyclodextrin Polymer on Cellulose Microcrystals (CD-TFN@cellulose) was prepared by reacting 1.5 g of cellulose microcrystals, 3.2 g of ⁇ -cyclodextrin, 2.3 g of tetrafluorophthalonitrile, and 6.4 g of potassium carbonate in 150 mL of a 9: 1 tetrahydrofuran/water solvent mixture at 85 °C for 2 days under a N2 atmosphere in a 300 mL pressure vessel. The final suspension was cooled and filtered.
  • CD-TFN@cellulose The capacity of the CD-TFN@cellulose to uptake bisphenol A from water solution as a function of contact time and initial concentration was investigated. As a function of contact time, CD-TFN@cellulose shows an order of magnitude greater uptake than cellulose microcrystals (15 mg BPA/g adsorbent versus 1 mg/g). Of added value, CD-TFN@cellulose reaches equilibrium within the first 10 min of contact time (FIG. 4 A), showing its fast ability to sequester bisphenol A from water. Additionally, CD-TFN@cellulose is also superior to cellulose microcrystals as a function of bisphenol A concentration.
  • CD-TFN@cellulose shows a maximum capacity of 86.7 mg BPA/g, compared to only a negligible adsorption by cellulose at the studied concentration range (FIG. 4B).
  • FIG. 5 A show that the number of micropollutants classified in each removal bin was relatively stable between the two materials (TFN-CDP on the left and CD-TFN@cellulose on the right in each pairing). This is surprising and unexpected considering that CD-TFN@cellulose has fewer cyclodextrin binding sites than an equivalent mass of TFN-CDP.
  • the data in FIG. 5B show a direct comparison of the removal percentage for each micropollutant on TFN-CDP and CD- TFN@cellulose; each data point is the average of nine measurements (three samples each from triplicate experiments).
  • the thick dashed line represent the situation in which the removal is the same for each material, and the thinner dashed lines represent a 20% difference.
  • Example 2 Deposition of ⁇ -Cyclodextrin on Cellulose Microcrystals: Synthesis and Use for In-flow Water Remediation
  • ⁇ -cyclodextrin >97%)
  • CMC cellulose microcrystals
  • TBN tetrafluorophthalonitrile
  • DMSO dimethyl sulfoxide
  • BPA bisphenol A
  • Breakthrough experiments were done in a Hewlett Packard 1100 series, using a UV-VIS photodiode as a detector.
  • the photoelectron spectra (XPS) were recorded with a Thermo Scientific ESCALAB 250Xi instrument, using Al Kalpha X-ray source (1486.6 eV).
  • the monochromated X-ray beam spot size is 500 ⁇ in diameter and the power is 150 watts.
  • the pass energy of 100 eV and the step size of 1 eV were used for the survey scan. For the high resolution scan 50 eV of pass energy and 0.1 eV of step size were used.
  • CD-TFN@CMC Functionalization of the cellulose microcrystals (CD- TFN@CMC) was performed by varying the previously reported synthesis of the cyclodextrin porous polymer.
  • a 300 mL pressure vessel equipped with a magnetic stir bar was charged with TFN (7.5051 g, 37.52 mmol) and DMSO (170 mL), and the solution was stirred until TFN was completely dissolve.
  • ⁇ -CD (6.0052 g, 5.29 mmol
  • K2CO3 18.4521 g, 133.51 mmol
  • CMC (12.0011 g) were suspended in 73 mL of deionized H2O.
  • the functionalized cellulose was isolated from the non-bonded cyclodextrin polymer by using a 45 ⁇ sieve, where the solid passing through the mesh is the free polymer (CD-TFN, 48.9%) and the solid staying on top of the sieve is the functionalized cellulose (CD-TFN@CMC, 51.1%).
  • Synthesis of m-CD-TFN Synthesis of the ⁇ -CD polymer was performed by employing the same methodology used for CD-TFN@CMC.
  • a 150 mL pressure vessel equipped with a magnetic stir bar was charged with TFN (3.7572 g, 18.78 mmol) and DMSO (72 mL), and the solution was stirred until TFN was completely dissolve.
  • ⁇ - CD (3.0066 g, 2.65 mmol) and K2CO3 (9.2510 g, 66.94 mmol) were suspended in 36 mL of deionized H2O. This suspension was then added dropwise into the DMSO solution, and the flask was bubbled with N2 for 10 min.
  • CD-TFN@CMS Functionalization of the cellulose microspheres (CD- TFN@CMS) was performed by a slight modification of the CD-TFN@CMC synthesis.
  • a 300 mL Fast-Freeze flask was charged with TFN (3.7598 g, 18.80 mmol) and DMSO (84 mL), and the solution was stirred until TFN was completely dissolve.
  • ⁇ -CD 2.9999 g, 2.64 mmol
  • K2CO3 9.2585 g, 66.99 mmol
  • CMS 6.0117 g
  • the yellow solid was washed with methanol using a Soxhlet extractor for 1 day, and then freeze-dried under high vacuum overnight. Giving 5.5684 g (yield: 46.6%).
  • the functionalized spheres were isolated from the non-bonded cyclodextrin polymer by using a 90 ⁇ sieve, where the solid passing through the mesh is the free polymer (CD-TFN, 2.1%) and the solid staying on top of the sieve is the functionalized microsphere (CD-TFN@CMS, 97.9%).
  • Aqueous BPA kinetic uptake experiments Adsorption kinetic studies were performed in 20 mL scintillation vials. All studies were conducted at ambient temperature and 300 rpms, and the procedure was the same for all the adsorbents tested. 8 mg of CD- TFN@CMC (40 mg for CD-TFN@CMS) was initially suspended in 7.2 mL of water and stirred for S min. Then, 0.8 mL of BPA (1 mM) was added to the stirring polymer suspension. After a specific contact time, a 0.5 mL aliquot was taken and filtered immediately by a Whatman 0.2 um inorganic membrane syringe filter into aLCGC vial. The residual concentration of BPA was determined by LC. Uptake was determined as the average of three independent experiments performed using different samples, each isolated from the same polymerization experiment.
  • Aqueous BPA thermodynamic uptake experiments Thermodynamic adsorption studies were performed in 3 mL scintillation vials. All studies were conducted at ambient temperature and 300 rpms, and the procedure was the same for all the adsorbents tested. 2 mg of CD-TFN@CMC (10 mg for CD-TFN@CMS) were suspended in 2 mL of 0.125 mM BPA solution, and the suspension was stirred for 4h. After the equilibration time, 0.5 mL aliquot was taken and filtered immediately by a Whatman 0.2 um inorganic membrane syringe filter into a LCGC vial. This same procedure was repeated with the 0.25, 0.5, 0.75 and 1 mM BPA solutions. The residual concentration of BPA was determined by LC. Uptake was determined as the average of three independent experiments performed using different samples, each isolated from the same polymerization experiment.
  • Back pressure experiments were done at ambient temperature and the procedure was the same for all the adsorbents tested. 200 mg of CD- TFN@CMC was packed in an empty column, by adding 20 mg of adsorbent at a time and tapping the column. Then, the column was connected to a LC, and water was run through the column at 1 mL/min during 2h. Then, the flow rate was decreased to 0.1 mL/min, and the pressure was read after stabilization (1-2 min). Afterwards, the flow rate was increased to 0.2 mL/min and the pressure was read again.
  • Aqueous BPA breakthrough and reusability experiment Breakthrough experiments were done at ambient temperature and the procedure was the same for all the adsorbents tested, the flow rate was kept at 2mL/min during the entire experiment. 200 mg of CD-TFN@CMC was packed in an empty column, by adding 20 mg of adsorbent at a time and tapping the column. Then, the column was connected to a LC, and water was run through the column during 10 min. Then, the solvent was switched for BPA solution (0.1, 0.5, or 1.0 mM) and the UV-VIS signal was recorded until it reached a plateau. For the reusability experiment, the CD- TFN@CMC sample was packed and water equilibrated (200 mg, 10 min).
  • the characterization of the adsorbent reveals a core/shell structure where the polymer has a thickness of 800 ⁇ 160 nm.
  • Batch adsorption experiments demonstrate fast kinetics and access to more than 80% of the total number of cyclodextrins.
  • the flow adsorption of bisphenol A by a packed column of the adsorbent indicates a non-linear increase in the saturation time as a function of the pollutant concentration.
  • three adsorption/desorption experiments show the reusability of the adsorbent.
  • continuous adsorption of 15 micropollutants at relevant environmental concentration (10 ppb) confirms the potential utility of the adsorbent, where seven pollutants are removed completely and six are partially removed.
  • ⁇ -CD polymer on cellulose microcrystals is done by reacting ⁇ -CD, TFN, CMC and K2CO3 in a mixture of DMSO:H 2 0 at 85°C for 1 day (Fig. 8). Based on previous results, a good quality polymer can be obtained with 6 eq. of TFN and 21 eq. of base with respect to ⁇ -CD (Klemes et al., In preparation. 2018). However, for these studies a loading of 7.1 eq. of TFN and 25.2 eq. of base to account for the presence of extra hydroxyl groups on the CMC is used. Doubling the amount of CMC compared to ⁇ -CD increases the odds of successful grafting.
  • ⁇ -CD is highly soluble in DMSO, and is used as a solvent since it increases the yield of the reaction (Klemes et al., In preparation. 2018). Additionally, water aids in grafting the ⁇ -CD polymer on cellulose substrates (Alzate- Sanchez et al., Chem. Mater. 2016, 28 (22), 8340). A solvent screen with different combinations of DMSO and water, while keeping constant the reagent concentrations was performed. Based on the total mass yield and the capacity of the material to adsorb BP A (1 mg/mL in lmM solution), mixture of 7:3 DMSO:H20 for the large scale reaction was used (Fig. 15).
  • this material is a physical mixture of non-bonded ⁇ -CD polymer (CD- TFN) and ⁇ -CD polymer deposited on cellulose (CD-TFN@CMC), as depicted in the SEM image of Fig. 9a.
  • CD- TFN non-bonded ⁇ -CD polymer
  • CD-TFN@CMC ⁇ -CD polymer deposited on cellulose
  • composition analysis was performed as a combination of PXRD and combustion experiments. From the PXRD data, the amount of cellulose present was calculated using CMC to signify 100% cellulose, and 0% cellulose was signified by a CD-TFN polymer that does not contain cellulose (m-CD-TFN). By employing this methodology, 16.7 and 78.3 % CMC in CD- TFN and CD-TFN@CMC was calculated, respectively. Using combustion experiments and the amount of nitrogen quantified per sample, 38.05 and 8.1 % TFN for CD-TFN and CD- TFN@CMC was calculated, respectively.
  • the combined amount of CMC + ⁇ -CD in each polymer by carbon content was determined, which was calculated by subtracting the carbon- based TFN from the total amount of carbon, and determined 61.95 and 91.9 % for CD-TFN and CD-TFN@CMC, respectively.
  • combination of the PXRD results with the combustion experiments allows the determination of the amount of ⁇ -CD as 45.2 and 13.6 % for CD-TFN and CD-TFN@CMC, respectively.
  • a p-CD:TFN molar ratio of 3.9 and 2.1 and an average substitution in the TFN of 2.6 and 2.5 for CD-TFN and CD-TFN@CMC was calculated, respectively (Table 1).
  • CD-TFN still contains cellulose.
  • the polymer that is deposited on the CMCs is less crosslinked than the free polymer, which is due to the presence of extra hydroxyl groups coming from the CMCs.
  • the substitution pattern in the TFN is statistically the same for both samples, which supports a similar crosslinking reaction for both CD-TFN and CD-TFN@CMC formation.
  • Imaging experiments were performed using energy dispersive spectroscopy (EDS) and mapped elements that are in CD-TFN@CMC but not in the starting material (CMC).
  • Oxygen and carbon mapping shows a higher contrast where the CD-TFN@CMC is located, which demonstrates the validity of the technique (Fig.18).
  • Fluorine mapping has similar behavior, and identifies higher counts in the region where the particle is located. Therefore, it infers that TFN is present in the surface of the CMC and that it is homogeneously distributed because areas of the particle with significantly higher counts are not seen (Fig. 10b). Additionally, the same EDS imaging on CMC was performed, and the fluorine mapping shows no significant contrast (Fig. lOe).
  • a polymer thickness of 800 ⁇ 160 nm was calculated (Fig. 20).
  • the shell is indeed the cyclodextrin polymer, and therefore the functionalization is produced only on the surface of the CMC.
  • the thickness of the ⁇ -CD polymer is below 1 ⁇ enhances the possibility of much faster kinetics to adsorb MPs compared with the speed of CD-TFN which has a thickness on the order of tens of ⁇ ⁇ . 21).
  • ⁇ -CD is known to form a stable inclusion complex with BPA, so when the system is tested for BPA uptake; positive uptake would indicate that ⁇ -CD is present in the synthesized adsorbents, and the capacity and rate of the system for MP adsorption can be determined.
  • the adsorption of BPA as function of concentration is depicted in Fig. 11a. Initially, it is clear that ⁇ -CD is present in both CD-TFN and CD-TFN@CMC due to their much higher capacity for BPA than CMC. Additionally, CD-TFN has a higher BPA capacity than CD-TFN@CMC due to a lower amount of non-adsorbent material (CMC) in this sample.
  • thermodynamic parameters are the amount of BPA adsorbed per gram of adsorbent at equilibrium.
  • q max is the maximum adsorption capacity of adsorbent at equilibrium, K L (mol "1 ) is the equilibrium constant and C e (mM) is the concentration at equilibrium.
  • q t (mg BPA/g solid) is the amount of BPA adsorbed per gram of adsorbent at a given time.
  • q e (mg BPA/g solid) is the is the amount of BPA adsorbed per gram of adsorbent at equilibrium at a given initial concentration, t (s) is the time, and tr (s) is the relaxation time of the adsorption process, and it is the inverse of the rate constant.
  • CD-TFN For CD-TFN, a maximum capacity of 193.6 ⁇ 7.8 mg BPA/g solid was found, which corresponds to a combination of specific and nonspecific adsorption of BPA as seen in previous reports (Alsbaiee et al., Nature 2016, 529 (7S8S), 190).
  • the maximum BPA capacity for CD-TFN@CMC is 34.7 ⁇ 1.6 mg BPA / g solid.
  • a ⁇ -CD content of 16.8 ⁇ 0.8 % for CD-TFN@CMC is calculated. The value calculated by PXRD/elemental analysis is 13.6%.
  • CD-TFN has fast BPA uptake since it reached equilibrium within two minutes, which is comparable to our previously reported ⁇ -CD polymers (Alsbaiee et al., Nature 2016, 529 (7585), 190 and Ling et al., Environ. Sci. Technol. 2017, 51 (13), 7590). More remarkably, CD-TFN@CMC reached equilibrium within the first 20 s, which is the fastest BPA uptake for a ⁇ -CD material reported so far. The uptake of CMC is very low, and conclusions regarding its speed are hard to draw because the uptake does not follow any trend (Fig. 1 lb).
  • the fast kinetics of the deposited polymer is assumed to be due to more accessible ⁇ -CD for BPA due to a thinner layer of polymer (800 ⁇ 160 nm) compared to a thicker layer of the polymer when it is not deposited on the CMC (16.0 ⁇ 3.9 ⁇ ).
  • Low back pressure is an important characteristic of adsorbents meant to be used in packed columns for water purification.
  • Back pressure is highly dependent on particle size, morphology, and distribution, and so larger, homogenous particles are desirable (Guiochon, G. J. Chromatogr. A 2007, 1168, 101).
  • CD-TFN has an irregular shape and a broad size distribution
  • CD-TFN@CMC has a regular shape and a size distribution centered at 50 ⁇ . It was speculated that this material should have a lower back pressure compare with CD- TFN.
  • chromatographic columns were packed with the adsorbents and an LC instrument was used to measure the pressure as a function of flow rate (Fig. 12).
  • CD- TFN@CMC had an intermediate back pressure and was close to that of CMC.
  • Specific permeability can be determined from a graph of back pressure as a function of flow rate by using the following equation.
  • ⁇ (mPa*s) is the mobile phase viscosity
  • L (m) is the column length
  • r (m) is the column radius
  • F / AP (m 3 /mPa*s) is the slope of the curve of flow rate vs back pressure.
  • BPA kinetic adsorption and back pressure tests reveal that CD-TFN@CMC is faster and more permeable than CD-TFN.
  • in-flow removal of BPA was evaluated by packing a column with CD-TFN@CMC and then flowing solutions of BPA (0.1, 0.5 and 1.0 mM) through it. It was expected to not see a BPA signal initially due to the adsorption of this pollutant in the column. Eventually, due to continuous injection of BPA, the CD-TFN@CMC would be saturated, and subsequent leaching of BPA would be expected.
  • typical breakthrough curves were recorded for CD-TFN@CMC.
  • This regeneration was extrapolated to an in-flow system by saturating the CD-TFN@CMC with a 1.0 mM (228 ppm) BPA solution, followed by a methanol wash to remove the adsorbed BPA, and after attaining equilibrium with water this procedure was repeated. After three consecutive cycles of BPA adsorption/methanol washes, no change in capacity or breakthrough time was observed, which demonstrates CD-TFN@CMC can be easily and completely regenerated by a simple methanol wash with no need to remove the adsorbent from the column (Fig.13b).
  • Micropollutants are contaminants which exist in a sub-ppm concentration in the environment. Therefore, a more complete assessment of an adsorbent is accomplished by testing its performance to remove MPs as such concentrations. Consequently, it was decided to test the performance of CD-TFN@CMC to remove micropollutants at environmentally relevant concentrations (10 ppb). A cocktail of 15 micropollutants in water was generated and this solution was passed through a column packed with CD-TFN@CMC, and the breakthrough time of each micropollutant was monitored. After 60 minutes, seven micropollutants did not breakthrough, so 100% removal for them was calculated.
  • Fig. 29 Depicted in Fig. 29 are the chemical structures of each micropollutant and, by comparing the percent removal, it can be stated that MPs with carboxylic or sulfonic acid functionalities are poorly removed. On the contrary, MPs with amino functional groups are highly removed. This behavior is exemplified by the couple Metolachlor and Metolachlor-ESA, where the change of a chloride group (Metolachlor) for a sulfonic acid group (Metolachlor-ESA) decreased the removal from 99.7 ⁇ 0.2% to 70.9 ⁇ 5.2%, respectively. Therefore, CD-TFN@CMC has affinity towards basic molecules, most likely due to the presence of acidic functionalities.
  • a new adsorbent based on renewable resources for the continuous sequestration of organic micropollutants from water was developed.
  • the adsorbent had a core/shell structure in which the shell polymer has a thickness of 800 ⁇ 160 nm and is homogeneously distributed on the surface of the cellulose microcrystal. This homogeneity imparts outstanding properties to the adsorbent, including fast kinetics, high cyclodextrin access, and allowed for the possibility to pack columns for in-flow water treatment.

Abstract

La présente invention concerne des compositions comprenant des polymères mésoporeux contenant de la cyclodextrine (CD) greffés sur un substrat ou liés à celui-ci. Les compositions peuvent être utilisées pour éliminer des contaminants organiques de l'eau. Les P-CDP peuvent rapidement séquestrer des produits pharmaceutiques, des pesticides et d'autres micro-polluants organiques, ce qui permet d'atteindre la capacité de liaison à l'équilibre en quelques secondes avec des constantes de vitesse d'adsorption 15 à 200 fois supérieures à celles de sorbants en charbon actif et de sorbants à base de cyclodextrine non poreux. La composition peut être régénérée à plusieurs reprises, par une procédure de lavage à température ambiante, sans perte de performance.
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