Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
  • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
  • B65D81/266—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
  • B01D53/34—Chemical or biological purification of waste gases
  • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
  • B01D53/86—Catalytic processes
  • B01D53/88—Handling or mounting catalysts
  • B01D53/885—Devices in general for catalytic purification of waste gases
• • 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
  • B01J35/00—Catalysts, in general, characterised by their form or physical properties
  • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
  • B01J35/39—Photocatalytic properties
• • 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
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
  • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
  • D06M11/44—Oxides or hydroxides of elements of Groups 2 or 12 of the Periodic Table; Zincates; Cadmates
• • 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
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
  • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
  • D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
• • 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
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
• • 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
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/77—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof
  • D06M11/79—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with silicon or compounds thereof with silicon dioxide, silicic acids or their salts
• • 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
  • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
• • 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
  • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
  • D06M13/503—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms without bond between a carbon atom and a metal or a boron, silicon, selenium or tellurium atom
• • 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
  • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
  • D06M13/503—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms without bond between a carbon atom and a metal or a boron, silicon, selenium or tellurium atom
  • D06M13/507—Organic silicon compounds without carbon-silicon bond
• • 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
  • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
  • D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
• • 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
  • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
  • D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
  • D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
  • B01D2253/10—Inorganic adsorbents
  • B01D2253/106—Silica or silicates
  • B01D2253/108—Zeolites
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
  • B01D2253/25—Coated, impregnated or composite adsorbents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2255/00—Catalysts
  • B01D2255/20—Metals or compounds thereof
  • B01D2255/207—Transition metals
  • B01D2255/20707—Titanium
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2255/00—Catalysts
  • B01D2255/50—Zeolites
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2255/00—Catalysts
  • B01D2255/80—Type of catalytic reaction
  • B01D2255/802—Photocatalytic
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2257/00—Components to be removed
  • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
  • B01D2257/702—Hydrocarbons
  • B01D2257/7022—Aliphatic hydrocarbons

Definitions

• the present disclosure relates to a fiber suitable for packaging and storing plant produce.
• ethylene gas a natural ripening agent
• ethylene gas a natural ripening agent
• ethylene gas is reduced either by storing the plant produce in a cold storage at a temperature of -1 to +12°C and at a relative atmospheric moisture of 80 to 90% or by storing it in a controlled atmosphere at a temperature range of 0 to 5°C with approximately 3% of oxygen and 0 to 5% of carbon dioxide.
• the above stated storage conditions negatively influence the taste of certain plant produce due to low oxygen content and high carbon dioxide content.
• the oxidizing agent includes potassium bromate supported on activated charcoal; silver, alumina, copper and aluminum chloride exchanged zeolite A; palladium chloride supported on carbon; sodium chloride saturated on silica and zeolites; sodium and potassium permanganate impregnated on various carriers like activated carbon, alumina, zeolites and diatomaceous earth.
• potassium permanganate is observed to be the most effective for converting ethylene into carbon dioxide and water.
• leaching of potassium permanganate at a high humidity of 80 to 90% limits its use.
• Packaging containers prepared by using fibers containing silver arid copper exchanged hydrophilic zeolites like Zeolite A and X impart good antimicrobial properties but have a limited capacity to remove ethylene.
• fiber in the context of the present disclosure includes natural or synthetic fibers.
• the fibers of the present discourse are in the form of discrete fibers, woven fibers, non-woven fibers, yarns, mono filaments, spun filaments, staple filaments, bi- component filaments, multi-component filaments, mono-component yarns, bi- component yarns, multicomponent yarns, fabrics, sheets and mats.
• Figure 1 illustrates the ethylene adsorption capacity of the fiber of the present disclosure, in which A represents ethylene adsorption capacity of T-Cotton, B represents ethylene adsorption capacity of the control Cotton (Cotton without photocatalyst), X-axis represents time in hrs. and Y-axis represents concentration of ethylene in parts per million (ppm).
• A represents ethylene adsorption capacity of T-Cotton
• B represents ethylene adsorption capacity of the control Cotton (Cotton without photocatalyst)
• X-axis represents time in hrs.
• Y-axis represents concentration of ethylene in parts per million (ppm).
• Figure 2 illustrates the ethylene adsorption capacity of the fiber of the present disclosure, in which A represents ethylene adsorption capacity of T- Jute, B represents ethylene adsorption capacity of the control Jute (Jute without photocatalyst), X-axis represents time in hrs. and Y-axis represents concentration of ethylene in parts per million (ppm).
• Figure 3 illustrates the ethylene adsorption capacity of the fiber of the present disclosure, in which A represents ethylene adsorption capacity of T-Paper, B represents ethylene adsorption capacity of the control Paper (Paper without photocatalyst), X-axis represents time in hrs. and Y-axis represents concentration of ethylene in parts per million (ppm).
• Figure 4 illustrates the ethylene adsorption capacity of the fiber of the present disclosure, in which A represents ethylene adsorption capacity of TZ-Cotton, B represents ethylene adsorption capacity of the control Cotton (Cotton without photocatalyst), X-axis represents time in hrs. and Y-axis represents concentration of ethylene in parts per million (ppm).
• Figure 5 illustrates the ethylene adsorption capacity of the fiber of the present disclosure, in which A represents ethylene adsorption capacity of TZ-Jute, B represents ethylene adsorption capacity of the control Jute (Jute without photocatalyst), X-axis represents time in hrs. and Y-axis represents concentration of ethylene in parts per million (ppm).
• a fiber suitable for packaging comprising a photocatalyst and optionally, a silicon containing linker; characterized in that said photocatalyst is bonded to the fiber by means of a first functional group pre-present on said fiber and optionally, a second functional group generated by a silicon containing linker.
• the fiber can be natural fiber of plant material selected from the group consisting of cotton, jute and cellulosic material; or the fiber can be synthetic fiber of polymeric material.
• the photo-catalyst can be at least one selected from the group consisting of titanium iso-propoxide, zinc oxide, metal doped titania and non- metal doped titania.
• the metal doped titania can comprise at least one metal selected from the group consisting bismuth, cerium, lanthanum, iron and zinc.
• the non- metal doped titania can comprise at least one non- metal selected from the group consisting of nitrogen and sulfur.
• the photo-catalyst can be embedded in at least one adsorbent substrate.
• the adsorbent substrate can be at least one selected from the group consisting of Ag exchanged ZSM 5 zeolite, zeolite A, alumina and silica.
• the particle size of the adsorbent substrate can range between of O.lnm and 150 nm.
• the bond between the fiber and the photo-catalyst can be at least one bond from the group consisting of covalent, ionic, hydrogen, zwitterion, electron-pair, van der waals forces and pi bond interaction.
• the silicon containing linker can be at least one selected from the group consisting of tetramethyl ortho silicate, trimethoxy silane, tetraethyl orthosilicate, triethoxy silane, methyl-dimethoxy silane, methyl-diethoxy silane, methyl-trimethoxy silane, cyclohexyl triethoxy silane, methyl-triethoxy silane, methyl-tripropoxy silane, methyl- tributoxy silane, propyl-trimethoxy silane, propyl-triethoxy silane, allyl-triethoxy silane, n-butyl trimethoxy silane, n-butyl triethoxy silane, i-butyl-trimethoxy
• a process for preparing a fiber suitable for packaging comprising the following steps: a) refluxing the fiber with a mixture comprising at least one photocatalyst, at least one solvent and optionally, at least one silicon containing linker, at a temperature ranging between 40°C and 90°C to obtain a treated fiber; and
• the proportion of silicon containing linker to the photocatalyst can be in the range of 1:1 and 300:1
• the photo-catalyst can be embedded in adsorbent substrate and said photocatalyst is obtained by a method comprising the following steps: i. treating at least one adsorbent substrate with a mixture comprising at least one vehicle and at least one photocatalyst under stirring for a time period of 30 min to 5 hrs to obtain slurry; wherein, the proportion of the adsorbent substrate to the mixture is in the range of 5:1 to 50:1
• the inventors of the present disclosure envisaged a fiber comprising a photocatalyst and optionally a silicon containing linker.
• the photocatalyst has the ability to convert ethylene gas evolved during the storage of plant produce into carbon dioxide and water, while the bond between the fiber and a photocatalyst imparts durability and wash ability to the fiber and the packaging material prepared using the fiber of the present disclosure.
• a fiber comprising a photocatalyst and optionally, a silicon containing linker.
• the photocatalyst is bonded to the fiber by means of a first functional group pre-present on the fiber and optionally, a second functional group generated by a silicon containing linker.
• the fiber used in the present disclosure can be natural fiber of plant material selected from the group consisting of cotton, jute and cellulosic material; or the fiber can be synthetic fiber of polymeric material.
• the photo-catalyst of the present disclosure is bonded to the fiber through a first functional group pre-present on the fiber in order to provide durability and wash ability to the packaging material.
• the bond between the fiber and the photo-catalyst can be at least one bond from the group consisting of covalent, ionic, polar covalent, electrovalent, hydrogen, zwitterion, electron-pair, co-ordinate covalent, van der waals forces, cation pi interaction and ion pi interaction.
• the photo-catalyst is bonded to the fiber through a first functional group pre-present on the fiber and the second functional group generated by the silicon containing linker.
• the silicon containing linker present in the fiber of the of the present disclosure is at least one selected from the group consisting of tetramethyl ortho silicate, trimethoxy silane, tetraethyl orthosilicate, triethoxy silane, methyl-dimethoxy silane, methyl- diethoxy silane, methyl-trimethoxy silane, cyclohexyl triethoxy silane, methyl- triethoxy silane, methyl-tripropoxy silane, methyl-tributoxysilane, propyl-trimethoxy silane, propyl-triethoxy silane, allyl-triethoxy silane, n-butyl trimethoxy silane, n- butyl triethoxy silane, i-butyl-trimethoxy silane, i-butyl-triethoxy silane, dodecyl- trimethoxy silane
• the photo-catalyst capable of converting ethylene gas into carbon dioxide and water is selected from the group consisting of titanium iso-propoxide, titanium dioxide, zinc oxide, metal doped titania non- metal doped titania and combinations thereof.
• the photo-catalyst is embedded on the adsorbent substrate.
• the adsorbent substrate is selected from the group consisting of zeolite, Ag exchange ZSM 5 zeolite Zeolite A, alumina, silica and combinations thereof.
• the adsorbent substrate is characterized as nano-scaled porous structure having particle size in the range of O.lnm to 150 nm. The porous structure and the nano size of the adsorbent substrate increases the surface area for adsorption of ethylene gas released by plant produce. The adsorbed ethylene gas is then converted into carbon dioxide and water by the photo-catalyst embedded adsorbent.
• the photo-catalyst is titanium iso-propoxide.
• the fiber comprises titanium iso-propoxide embedded on Ag exchanged ZSM 5 zeolite as a photocatalyst.
• the presence of silver (Ag) in the ZSM 5 zeolite imparts additional antimicrobial property to the packaging prepared using the fiber of the present disclosure.
• a process for preparing a fiber suitable for packaging includes the following steps:
• a fiber is refluxed with a mixture comprising a photocatalyst, solvent and optionally, a silicon containing linker at a temperature ranging between 40°C and 90°C to obtain a treated fiber.
• the fiber used in the present disclosure can be natural fiber of plant material selected from the group consisting of cotton, jute and cellulosic material; or the fiber can be synthetic fiber of polymeric material.
• the treated fiber is washed and dried to obtain a fiber suitable for packaging.
• the proportion of silicon containing linker to the photocatalyst is in the range of 1:1 and 300:1.
• the solvent includes methanol, ethanol, propanol, butanol and pentanol.
• the photo-catalyst is bonded to the fiber by means of a first functional group pre- present on said fiber and optionally, a second functional group generated by a silicon containing linker.
• the bond between the fiber and the photo-catalyst can be at least one bond from the group consisting of covalent, ionic, polar covalent, electrovalent, hydrogen, zwitterion, electron-pair, co-ordinate covalent, van der waals forces, cation pi interaction and ion pi interaction.
• the photocatalyst used in the present disclosure is selected from the group consisting of titanium iso-propoxide, titanium dioxide, zinc oxide, metal doped titania and non- metal doped titania.
• the metal doped titania comprises at least one metal selected from the group consisting bismuth, cerium, lanthanum, iron, and zinc.
• the non- metal doped titania comprises at least one non-metal selected from the group consisting of nitrogen and sulfur.
• the photocatalyst embedded on the adsorbent substrate is obtained by a method which includes the following steps:
• the adsorbent substrate is treated with a mixture comprising at least one vehicle and at least one photocatalyst under stirring for a time period of 30min to 5hrs to obtain slurry.
• the proportion of the adsorbent to the mixture ranges between 5:1 and 50:1.
• the vehicle typically includes methanol, ethanol, propanol and butanol.
• the slurry is dried at a temperature of 50°C to 200°C for a time period of 30min to 5 hrs. to obtain an un-hydrolyzed photocatalyst embedded adsorbent substrate.
• the un-hydrolyzed photocatalyst embedded adsorbent is hydrolyzed with water to obtain a hydrolyzed photocatalyst embedded on the adsorbent substrate.
• the hydrolyzed photocatalyst embedded adsorbent is washed, dried and calcined to obtain a photocatalyst embedded on the adsorbent substrate.
• the adsorbents may be selected the group consisting of Ag exchanged ZSM 5 zeolite, zeolite A, alumina, silica and combinations thereof.
• the adsorbents are characterized as nano-scaled porous structures having particle size in the range of O. lnm to 150 nm.
• the fiber of the present disclosure has its extensive end use application in preparing a packaging material for storage of plant produce.
• Example 1 Titanium (IV) isopropoxide treated cotton fabric:
• T-Cotton fabric was evaluated in the presence of fluorescent lamp for ethylene adsorption capacity in airtight round bottom glass flask (RBF) maintained at 40°C in an oven wherein 1 g of modified fabric sample was kept and known amount (between 100 to 400 parts per million) of ethylene was introduced.
• RBF airtight round bottom glass flask
• control cloth/fiber i.e., un-modified cloth/fiber
• the reduction of the ethylene content was determined periodically by extracting 0.5 ⁇ , of gas through air tight gas syringe and analysed by gas chromatograph.
• T-Cotton removed 30.3% (100 ppm) of ethylene/g of cotton fabric after 27 h whereas control cotton removed 10.4% (39 ppm) of ethylene/g of cotton fabric under similar conditions and results are shown in Figure 1.
• Example 2 Titanium (IV) isopropoxide treated Jute:
• Treated Jute fibers removed 34.3% (127 ppm) of ethylene/g of Jute fibers after 25 h whereas control Jute fibers removed 13.1% (57 ppm) of ethylene/g of Jute fibers under similar conditions as described in example 1 and results are presented in Figure 2.
• Example 3 Titanium (IV) isopropoxide treated cellulosic paper:
• T-Paper 10 g cellulosic paper was dipped in titanium (IV) isopropoxide solution (20% titanium (IV) isopropoxide solution in 2-propanol) in the ratio of 1:10 for 3 h at 30°C. Additional solution was decanted and treated paper was oven dried at 70°C for 2 h. Thus prepared sample was designated as T-Paper.
• T-Paper removed 22.0% (74 ppm) of ethylene/g of cellulosic paper after 24 h whereas control cellulosic paper removed 10.4% (34 ppm) of ethylene/g of cellulosic paper under similar conditions as evaluated for PSF fabric as described in example 1 and results are shown in Figure 3.
• Example 4 Immobilization of adsorbent cum catalyst on cotton: A) Preparation of photocatalyst embedded adsorbent:
• NaZSM-5 was prepared in static mode under hydrothermal conditions using mixed template having a molar gel composition of 200 Si0 2 : A1 2 0 3 : 55.6 Na 2 0: 3.13 TEBA (triethylbutyl ammonium bromide): 3.13 EDA (ethylene diamine): 4227 H 2 0 at 170°C temperature for 48 h previously aged at 110°C for 17 h. After hydrothermal treatment, solid product was recovered, washed, dried at 120°C for 6 h in oven and finally calcined at 550°C in air flow for 6 h.
• TEBA triethylbutyl ammonium bromide
• EDA ethylene diamine
• TZ-Cotton fabric removed 15.9 % (61 ppm) of ethylene/g of fabric after 27 h whereas control PSF removed 10.4% (39 ppm) of ethylene/g of fabric as evaluated under similar conditions as described in example 1 and results are presented in Figure 4.
• TZ-Jute fibers removed 22.1% (86 ppm) of ethylene/g of fibers after 25 h whereas control PSF removed 13.1% (57 ppm) of ethylene/g of fiber ( Figure 5) as evaluated under similar conditions as described in example 1.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Textile Engineering (AREA)
• Organic Chemistry (AREA)
• Inorganic Chemistry (AREA)
• Environmental & Geological Engineering (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Food Science & Technology (AREA)
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• Analytical Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
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