CN110158316A - A kind of polydactyl acid non-woven fabrics and the preparation method and application thereof for water-oil separating - Google Patents
A kind of polydactyl acid non-woven fabrics and the preparation method and application thereof for water-oil separating Download PDFInfo
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- CN110158316A CN110158316A CN201910456896.7A CN201910456896A CN110158316A CN 110158316 A CN110158316 A CN 110158316A CN 201910456896 A CN201910456896 A CN 201910456896A CN 110158316 A CN110158316 A CN 110158316A
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- woven fabrics
- water
- preparation
- pdla
- oil separating
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 89
- 238000002360 preparation method Methods 0.000 title claims abstract description 35
- 239000002253 acid Substances 0.000 title claims abstract description 27
- RBMHUYBJIYNRLY-UHFFFAOYSA-N 2-[(1-carboxy-1-hydroxyethyl)-hydroxyphosphoryl]-2-hydroxypropanoic acid Chemical compound OC(=O)C(O)(C)P(O)(=O)C(C)(O)C(O)=O RBMHUYBJIYNRLY-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229920001434 poly(D-lactide) Polymers 0.000 claims abstract description 57
- 239000000243 solution Substances 0.000 claims abstract description 36
- 239000002904 solvent Substances 0.000 claims abstract description 34
- 239000003960 organic solvent Substances 0.000 claims abstract description 29
- 239000004626 polylactic acid Substances 0.000 claims abstract description 15
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002351 wastewater Substances 0.000 claims abstract description 7
- 239000011259 mixed solution Substances 0.000 claims abstract description 6
- JVTAAEKCZFNVCJ-REOHCLBHSA-N L-lactic acid Chemical compound C[C@H](O)C(O)=O JVTAAEKCZFNVCJ-REOHCLBHSA-N 0.000 claims abstract description 5
- 229920001432 poly(L-lactide) Polymers 0.000 claims abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 28
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical group ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 27
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 27
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 15
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 14
- 235000019441 ethanol Nutrition 0.000 claims description 14
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 abstract description 2
- 230000003746 surface roughness Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 65
- 238000013019 agitation Methods 0.000 description 18
- 150000001875 compounds Chemical class 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 238000000926 separation method Methods 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 229920001519 homopolymer Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical class ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920006381 polylactic acid film Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003075 superhydrophobic effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/08—Thickening liquid suspensions by filtration
-
- 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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/262—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation
-
- 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
- B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
- B01J20/28038—Membranes or mats made from fibers or filaments
-
- 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
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/507—Polyesters
-
- 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
- C02F2101/32—Hydrocarbons, e.g. oil
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/08—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with halogenated hydrocarbons
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/144—Alcohols; Metal alcoholates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/10—Repellency against liquids
- D06M2200/12—Hydrophobic properties
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Nonwoven Fabrics (AREA)
- Artificial Filaments (AREA)
- Polyesters Or Polycarbonates (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of preparation methods of polydactyl acid non-woven fabrics for water-oil separating, the following steps are included: PDLA is dissolved in organic solvent by (1), it is configured to the PDLA solution of 0.1%wt-5%wt, the poor solvent of the polylactic acid of 1-4 times of volume is added, stirs to get mixed solution；(2) mixed solution of step (1) is poured into the container equipped with PLLA non-woven fabrics；(3) it stands and dries after a certain period of time at room temperature.The application prepares and generates micron order little particle on gained polydactyl acid non-woven fabrics, increase the surface roughness of polylactic acid non-woven fabrics, non-woven fabrics is up in air 150 ° to the contact angle of water, contact angle to oil is 0 °, adsorption capacity improves 40% or more compared to unmodified polylactic acid non-woven fabrics, and recycling 10 times still with preferable stability.Preparation method of the present invention is simple, totally biodegradable, will not cause secondary pollution, can be used to handle oily waste water on a large scale.
Description
Technical field
The present invention relates to oily water separation technique, specially a kind of polydactyl acid non-woven fabrics and its system for water-oil separating
Preparation Method and application.
Background technique
In recent years, as industrial pollution increasingly aggravates, the discharge of oily waste water also increases increasingly.Frequent Oil spills with
And the industrial discharge of organic solvent, it is caused serious environmental pollution all over the world and ecological problem.Traditional water-oil separating
The generally existing low efficiency of technology, the deficiencies of time-consuming, at high cost place.In order to solve these problems, new oil-water separation method
It is constantly researched and developed with material, oil absorption material gradually grows up as the main force of water-oil separating.
In recent decades, forefathers more pay attention to the research of water-oil separating material, traditional water-oil separating material, such as sponge
Equal Porous materials are widely used.But material itself is there is to oil the disadvantages of selectivity is low, adsorbance is few, and service life is very
It is short.Based on this, synthetic material is widely used initially as the main force of water-oil separating material, but such material
Generally there is unstable chemcial property, the low disadvantage of reuse rate, and mostly not biodegradable is secondary there is causing
The risk of pollution.
Polylactic acid (PLA) is that a kind of route of synthesis is extensive, and final catabolite is CO2And H2The fully biodegradable of O
High molecular material.It has the advantages that good biocompatibility, has a good application prospect and researching value.Forefathers simply utilize
The mutually method of separation, has produced super-hydrophobic polylactic acid film, but this film mechanical performance is too poor, is not suitable for oil
Water separation industries.It also has been reported that and has studied by adsorbing nano silica particle after polylactic acid nonwoven surface coats adhesion layer,
But this methods experiment is complicated for operation, for resulting water-oil separating material due to being added to other particles, wearability is poor.
It is reported that polylactic acid can be divided into l-lactic acid according to the difference of its polymer molecular chain optical activity
(PLLA), dextrorotation polylactic acid (PDLA).When PLLA is blended with PDLA with certain proportion, a kind of Stereocomplex body can be formed
(SC).It is different from the respective homopolymer of PLLA and PDLA, and be mainly reflected in following 3 aspects: (1) PLA-sc is with higher
Melting temperature, respectively than PLLA and PDLA the fusing point of homopolymer is higher by nearly 50 DEG C；(2) PLA-sc crystal is with 31 helical conformation heaps
Long-pending anorthic crystal, belongs to beta crystal；(3) compared to the respective homopolymer of PLLA and PDLA, it have excellent impact property and
Mechanical property.
Summary of the invention
Goal of the invention: being directed to above-mentioned the technical problems existing in the prior art, and this application provides one kind for grease point
From polydactyl acid non-woven fabrics and preparation method thereof and its application in processing oily waste water.
Technical solution: a kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating described herein, packet
Include following steps:
(1) it takes PDLA to be dissolved in organic solvent and obtains PDLA solution, the poor solvent of polylactic acid is added；
(2) PLLA non-woven fabrics is taken, the mixed solution that a dropping step (1) obtains is immersed in non-woven fabrics in mixed solution；
(3) after step (2) operation, 12-36h is stood, is then dried.
In step (1), the molecular weight of the PDLA is 20000-200000；The organic solvent is methylene chloride or three
Chloromethanes；The poor solvent of the polylactic acid is at least one of ethyl alcohol, n-butanol and butyl acetate.
In step (1), the concentration of the PDLA solution is 0.1%wt-5%wt；The PDLA solution and polylactic acid are not
The volume ratio of good solvent is 1:1-5.
In step (2), the PLLA molecular weight is 40000-200000.
It in step (3), is stood in room temperature environment, the drying refers to the dry 4-24h in 20-80 DEG C of baking oven.
The polydactyl acid non-woven fabrics of water-oil separating is used for also in the protection model of the application according to above method preparation gained
In enclosing.The polydactyl acid non-woven fabrics for water-oil separating near 150 °, exists to the contact angle of water to the contact angle of oil
Near 0 °.Also, obtained non-woven fabrics oil absorption improves 40% or more, can be recycled 10 times or more.
Application of the polydactyl acid non-woven fabrics for water-oil separating in processing oily waste water is also the application's
In protection scope.
The dichloromethane solution of the PDLA containing poor solvent is added dropwise in the present invention on PLLA non-woven fabrics, thus PLLA without
The slightly soluble surface containing PLLA is formed in woven fabric.The PDLA contained in PDLA solution is blended with above-mentioned molten PLLA in the solution,
Occur mutually to separate in solvent, poor solvent volatilization process and forms the stereoscopic composite of polylactic acid in nonwoven surface.This hair
Bright obtained water-oil separating nonwoven surface is due to being self-assembly of stereoscopic composite, and the stereoscopic composite passes through by force
Chemical bond is directly connected with non-woven fabrics, and therefore, obtained water-oil separating non-woven fabrics is with good stability and wearability.
PDLA refers to that poly- L-lactic acid, PLLA refer to Poly L-lactic acid in the application.
The utility model has the advantages that the application polylactic acid water-oil separating non-woven fabrics is in air to the contact angle of water near 150 °；It is right
The contact angle of oil is near 0 °；It can be used for water-oil separating field, oil absorption improves 40% or more, can be recycled 10 times
More than, durability is good.The present invention is experimentally confirmed, the water-oil separating non-woven fabrics of preparation have stablize it is wear-resisting, efficiently separate
Feature；And after discarded, it can degrade in the natural environment, secondary pollution will not be generated；It can be used for the grease of oily wastewater
Separation, such as can be used for the water-oil separating containing edible oil, gasoline oily wastewater, it has a extensive future.
Detailed description of the invention
Fig. 1 is the surface topography stereoscan photograph of the amplification of the water-oil separating non-woven fabrics of preparation；
Fig. 2 is measurement water droplet (3 microlitres) in air in the shape picture of the water-oil separating nonwoven surface of preparation；
Fig. 3 is measurement oil droplet (3 microlitres) in air in the shape picture of the water-oil separating nonwoven surface of preparation；
Fig. 4 is that the water-oil separating non-woven fabrics of embodiment preparation is used to absorb the effect photo of oily matter；
Fig. 5 is that the water-oil separating non-woven fabrics of embodiment preparation reuses 10 water contact angle delta data figures.
Specific embodiment
The present invention will be described below by way of specific embodiments.
PLLA non-woven fabrics is purchased from Guoqiao Ind Co., Ltd., Jiangxi.
Embodiment 1
A kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, specific steps are as follows:
(1) the PDLA solution for being 0.1%wt with compound concentration is then added into above-mentioned PDLA solution isometric bad
Solvent, magnetic agitation 30min；Wherein poor solvent by isometric ethyl alcohol, n-butanol, butyl acetate magnetic agitation prepare and
At the molecular weight of PDLA is 20000, and organic solvent is methylene chloride；
(2) the resulting mixed liquor of 15ml step (1) is instilled into the round PLLA non-woven fabrics (Mw=for being 6cm equipped with diameter
40000) in culture dish, wherein the molecular weight of PLLA is 40000；
(3) it after standing non-woven fabrics for 24 hours in step (2) culture dish under room temperature, is placed in baking oven and is done under the conditions of 40 DEG C
Water-oil separating non-woven fabrics is made in dry 6h.
Embodiment 2
A kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, specific steps are as follows:
(1) the PDLA solution for being 0.1%wt with organic solvent compound concentration is then added 4 times into above-mentioned PDLA solution
The poor solvent of volume, magnetic agitation 30min.Wherein poor solvent is stirred by isometric ethyl alcohol, n-butanol, butyl acetate magnetic force
It mixes 30min to be formulated, wherein the molecular weight of PDLA is 20000, and organic solvent is methylene chloride；
(2) the resulting mixed liquor of 15ml step (1) is instilled into the round PLLA non-woven fabrics (Mw=for being 6cm equipped with diameter
40000) in culture dish, wherein the molecular weight of PLLA is 40000；
(3) it after standing non-woven fabrics for 24 hours in culture dish in step (2) under room temperature, is placed in baking oven under the conditions of 40 DEG C
Dry 6h, is made water-oil separating non-woven fabrics.
Embodiment 3
A kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, specific steps are as follows:
(1) the PDLA solution for being 5%wt with organic solvent compound concentration is then added into above-mentioned PDLA solution isometric
Poor solvent, magnetic agitation 30min.Wherein poor solvent is matched by isometric ethyl alcohol, n-butanol, butyl acetate magnetic agitation
It makes, the molecular weight of PDLA is 20000, and organic solvent is methylene chloride；
(2) the resulting mixed liquor of 15ml step (1) is instilled into the round PLLA non-woven fabrics (Mw=for being 6cm equipped with diameter
40000) in culture dish, wherein the molecular weight of PLLA is 40000；
(3) it after standing non-woven fabrics for 24 hours in culture dish in step (2) under room temperature, is placed in baking oven under the conditions of 40 DEG C
Dry 6h, is made water-oil separating non-woven fabrics.
Embodiment 4
A kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, specific steps are as follows:
(1) 4 times of bodies are then added in the PDLA solution for being 5%wt with organic solvent compound concentration into above-mentioned PDLA solution
Long-pending poor solvent, magnetic agitation 30min.Wherein poor solvent is by isometric ethyl alcohol, n-butanol, butyl acetate magnetic agitation
It is formulated, the molecular weight of PDLA is 20000, and organic solvent is methylene chloride；
(2) the resulting mixed liquor of 15ml step (1) is instilled into the round PLLA non-woven fabrics (Mw=for being 6cm equipped with diameter
40000) in culture dish, wherein the molecular weight of PLLA is 40000；
(3) it after standing non-woven fabrics for 24 hours in culture dish in step (2) under room temperature, is placed in baking oven under the conditions of 40 DEG C
Dry 6h, is made water-oil separating non-woven fabrics.
Embodiment 5
A kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, specific steps are as follows:
(1) the PDLA solution for being 0.1%wt with organic solvent compound concentration, the subsequent bodies such as addition into above-mentioned PDLA solution
Long-pending poor solvent, magnetic agitation 30min.Wherein poor solvent is by isometric ethyl alcohol, n-butanol, butyl acetate magnetic agitation
It is formulated, the molecular weight of PDLA is 200000, and organic solvent is chloroform；
(2) the resulting mixed liquor of 15ml step (1) is instilled into the round PLLA non-woven fabrics (Mw=for being 6cm equipped with diameter
40000) in culture dish, wherein the molecular weight of PLLA is 40000；
(3) it after standing non-woven fabrics for 24 hours in culture dish in step (2) under room temperature, is placed in baking oven under the conditions of 40 DEG C
Dry 6h, is made water-oil separating non-woven fabrics.
Embodiment 6
A kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, specific steps are as follows:
(1) the PDLA solution for being 0.1%wt with organic solvent compound concentration is then added 4 times into above-mentioned PDLA solution
The poor solvent of volume, magnetic agitation 30min.Wherein poor solvent is stirred by isometric ethyl alcohol, n-butanol, butyl acetate magnetic force
It mixes and is formulated, the molecular weight of PDLA is 200000, and organic solvent is chloroform；
(2) the resulting mixed liquor of 15ml step (1) is instilled into the round PLLA non-woven fabrics (Mw=for being 6cm equipped with diameter
40000) in culture dish, wherein the molecular weight of PLLA is 40000；
(3) it after standing non-woven fabrics for 24 hours in culture dish in step (2) under room temperature, is placed in baking oven under the conditions of 40 DEG C
Dry 6h, is made water-oil separating non-woven fabrics.
Embodiment 7
A kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, specific steps are as follows:
(1) then isoploid is added into above-mentioned PDLA solution in the PDLA solution for being 5%wt with organic solvent compound concentration
Long-pending poor solvent, magnetic agitation 30min.Wherein poor solvent is by isometric ethyl alcohol, n-butanol, butyl acetate magnetic agitation
It is formulated, the molecular weight of PDLA is 200000, and organic solvent is chloroform；
(2) the resulting mixed liquor of 15ml step (1) is instilled into the round PLLA non-woven fabrics (Mw=for being 6cm equipped with diameter
40000) in culture dish, wherein the molecular weight of PLLA is 40000；
(3) it after standing non-woven fabrics for 24 hours in culture dish in step (2) under room temperature, is placed in baking oven under the conditions of 40 DEG C
Dry 6h, is made water-oil separating non-woven fabrics.
Embodiment 8
A kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, specific steps are as follows:
(1) 4 times of bodies are then added in the PDLA solution for being 5%wt with organic solvent compound concentration into above-mentioned PDLA solution
Long-pending poor solvent, magnetic agitation 30min.Wherein poor solvent is by isometric ethyl alcohol, n-butanol, butyl acetate magnetic agitation
It is formulated, the molecular weight of PDLA is 200000, and organic solvent is chloroform；
(2) the resulting mixed liquor of 15ml step (1) is instilled into the round PLLA non-woven fabrics (Mw=for being 6cm equipped with diameter
40000) in culture dish, wherein the molecular weight of PLLA is 40000；
(3) it after standing non-woven fabrics for 24 hours in culture dish in step (2) under room temperature, is placed in baking oven under the conditions of 40 DEG C
Dry 6h, is made water-oil separating non-woven fabrics.
Embodiment 9
A kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, specific steps are as follows:
(1) the PDLA solution for being 0.5%wt with organic solvent compound concentration is then added 1.5 into above-mentioned PDLA solution
The poor solvent of times volume, magnetic agitation 30min.Wherein poor solvent is by isometric ethyl alcohol, n-butanol, butyl acetate magnetic force
Stirring is formulated, and the molecular weight of PDLA is 100000, and organic solvent is methylene chloride；
(2) the resulting mixed liquor of 15ml step (1) is instilled into the round PLLA non-woven fabrics (Mw=for being 6cm equipped with diameter
100000) in culture dish, wherein the molecular weight of PLLA is 100000；
(3) it after standing non-woven fabrics for 24 hours in culture dish in step (2) under room temperature, is placed in baking oven under the conditions of 40 DEG C
Dry 6h, is made water-oil separating non-woven fabrics.
Embodiment 10
A kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, specific steps are as follows:
(1) the PDLA solution for being 1%wt with organic solvent compound concentration is then added 1.5 times into above-mentioned PDLA solution
The poor solvent of volume, magnetic agitation 30min.Wherein poor solvent is stirred by isometric ethyl alcohol, n-butanol, butyl acetate magnetic force
It mixes and is formulated, the molecular weight of PDLA is 60000, and organic solvent is chloroform；
(2) the resulting mixed liquor of 15ml step (1) is instilled into the round PLLA non-woven fabrics (Mw=for being 6cm equipped with diameter
60000) in culture dish, wherein the molecular weight of PLLA is 60000；
(3) it after standing non-woven fabrics for 24 hours in culture dish in step (2) under room temperature, is placed in baking oven under the conditions of 40 DEG C
Dry 6h, is made water-oil separating non-woven fabrics.
Embodiment 11
A kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, specific steps are as follows:
(1) the PDLA solution for being 2%wt with organic solvent compound concentration is then added 1.5 times into above-mentioned PDLA solution
The poor solvent of volume, magnetic agitation 30min.Wherein poor solvent is stirred by isometric ethyl alcohol, n-butanol, butyl acetate magnetic force
It mixes and is formulated, the molecular weight of PDLA is 100000, and organic solvent is methylene chloride；
(2) the resulting mixed liquor of 15ml step (1) is instilled into the round PLLA non-woven fabrics (Mw=for being 6cm equipped with diameter
100000) in culture dish, wherein the molecular weight of PLLA is 100000；
(3) it after standing non-woven fabrics for 24 hours in culture dish in step (2) under room temperature, is placed in baking oven under the conditions of 40 DEG C
Dry 6h, is made water-oil separating non-woven fabrics.
Embodiment 12
A kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, specific steps are as follows:
(1) the PDLA solution for being 0.5%wt with organic solvent compound concentration is then added 2 times into above-mentioned PDLA solution
The poor solvent of volume, magnetic agitation 30min.Wherein poor solvent is stirred by isometric ethyl alcohol, n-butanol, butyl acetate magnetic force
It mixes and is formulated, the molecular weight of PDLA is 100000, and organic solvent is chloroform；
(2) the resulting mixed liquor of 15ml step (1) is instilled into the round PLLA non-woven fabrics (Mw=for being 6cm equipped with diameter
100000) in culture dish, wherein the molecular weight of PLLA is 100000；
(3) it after standing non-woven fabrics for 24 hours in culture dish in step (2) under room temperature, is placed in baking oven under the conditions of 40 DEG C
Dry 6h, is made water-oil separating non-woven fabrics.
Embodiment 13
The feature and Function Identification of water-oil separating polydactyl acid non-woven fabrics
1, electron-microscope scanning is observed
The water-oil separating non-woven fabrics that examples detailed above is obtained carries out electron-microscope scanning, amplifies 3000 times of observation surface topographies, ties
Fruit is as shown in Figure 1, it can be seen that generates block structure in fiber surface, increases the surface roughness of non-woven fabrics.
2, the oil absorption of oil-water separation mesh film and hydrophobic Journal of Sex Research
In air, it on the water-oil separating non-woven fabrics 3 microlitres of water droplet drops obtained in embodiment 1, is surveyed using contact angle
Instrument measurement is measured, as a result as shown in Fig. 2, being in air 150 ° to the contact angle of water.In air, 3 microlitres of n-hexane drops are existed
On water-oil separating non-woven fabrics obtained in embodiment 1, detected using contact angle measurement, it is as a result as shown in figure 3, right in air
The contact angle of oil is 0 °.
3, water-oil separating non-woven fabrics oil-water separation mixture
Water-oil separating non-woven fabrics obtained by examples detailed above has good absorption ability to oily matter, as shown in Figure 4.
4, Stability Determination
Water-oil separating non-woven fabrics made from embodiment 1 is after reusing 10 times, as shown in figure 5, still having very strong
Hydrophobic effect illustrates that the non-woven fabrics is with good stability.
Claims (8)
1. a kind of preparation method of the polydactyl acid non-woven fabrics for water-oil separating, which comprises the steps of:
(1) it takes PDLA to be dissolved in organic solvent and obtains PDLA solution, the poor solvent of polylactic acid is added, be uniformly mixing to obtain mixing
Solution；
(2) PLLA non-woven fabrics is taken, the mixed solution that a dropping step (1) obtains is immersed in non-woven fabrics in mixed solution；
(3) after step (2) operation, 12-36h is stood, is then dried.
2. preparation method according to claim 1, which is characterized in that in step (1), the molecular weight of the PDLA is
20000—200000；The organic solvent is dichloromethane or chloroform；The poor solvent of the polylactic acid is ethyl alcohol, just
At least one of butanol and butyl acetate.
3. preparation method according to claim 1, which is characterized in that in step (1), the concentration of the PDLA solution is
0.1%wt-5%wt；The volume ratio of the PDLA solution and the poor solvent of polylactic acid is 1:1-5.
4. preparation method according to claim 1, which is characterized in that in step (2), the PLLA molecular weight is
40000—200000。
5. preparation method according to claim 1, which is characterized in that in step (3), stood in room temperature environment,
The drying refers to the dry 4-24h in 20-80 DEG C of baking oven.
6. any preparation method preparation gained is used for the polydactyl acid non-woven fabrics of water-oil separating in claim 1-5.
7. the polydactyl acid non-woven fabrics according to claim 6 for water-oil separating, which is characterized in that it connects water
Feeler is near 150 °, to oily contact angle near 0 °.
8. polydactyl acid non-woven fabrics of any preparation method preparation gained for water-oil separating is being located in claim 1-5
Manage the application in oily waste water.
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| CN201910456896.7A CN110158316B (en) | 2019-05-29 | 2019-05-29 | Modified polylactic acid non-woven fabric for oil-water separation and preparation method and application thereof |
| GB2116986.7A GB2598511B (en) | 2019-05-29 | 2020-01-21 | Modified polylactic acid nonwoven fabric for oil/water separation and preparation method and application thereof |
| PCT/CN2020/073447 WO2020238270A1 (en) | 2019-05-29 | 2020-01-21 | Modified polylactic acid non-woven fabric for oil-water separation, preparation method therefor and application thereof |
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| CN110841108A (en) * | 2019-12-27 | 2020-02-28 | 南京思元医疗技术有限公司 | Preparation method of polylactic acid microparticles and injectable soft tissue filler |
| WO2020238270A1 (en) * | 2019-05-29 | 2020-12-03 | 南京大学 | Modified polylactic acid non-woven fabric for oil-water separation, preparation method therefor and application thereof |
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| CN113461995B (en) * | 2021-07-22 | 2022-07-22 | 郑州大学 | Preparation method of polylactic acid material with anti-adhesion sterilization function |
| CN115382516B (en) * | 2022-08-23 | 2024-10-18 | 和远潜江电子特种气体有限公司 | Preparation method of modified organic adsorption resin and application of modified organic adsorption resin in preparation of hydrogen bromide |
| CN116356569B (en) * | 2023-04-26 | 2024-05-17 | 东华大学 | Antibacterial fabric and preparation method thereof |
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| CN110158316B (en) | 2021-02-26 |
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