[go: up one dir, main page]

WO2002034819A1 - Procede de preparation d'une membrane polymere possedant des proprietes impermeables a l'eau et permeables au gaz - Google Patents

Procede de preparation d'une membrane polymere possedant des proprietes impermeables a l'eau et permeables au gaz Download PDF

Info

Publication number
WO2002034819A1
WO2002034819A1 PCT/KR2001/000608 KR0100608W WO0234819A1 WO 2002034819 A1 WO2002034819 A1 WO 2002034819A1 KR 0100608 W KR0100608 W KR 0100608W WO 0234819 A1 WO0234819 A1 WO 0234819A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas permeable
granular inorganic
water
polymer membrane
inorganic ingredients
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2001/000608
Other languages
English (en)
Inventor
Cheong Seok Hong
Byung Nam Hyun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AU2001250651A priority Critical patent/AU2001250651A1/en
Publication of WO2002034819A1 publication Critical patent/WO2002034819A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/20—Manufacture of shaped structures of ion-exchange resins
    • C08J5/22—Films, membranes or diaphragms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/003—Organic membrane manufacture by inducing porosity into non porous precursor membranes by selective elimination of components, e.g. by leaching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B01D69/108—Inorganic support material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/24—Rubbers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/54—Polyureas; Polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • B29C67/202—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored comprising elimination of a solid or a liquid ingredient
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/10—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with styrene-butadiene copolymerisation products or other synthetic rubbers or elastomers except polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/0283—Pore size

Definitions

  • the present invention pertains to a method for preparing polymer membranes having water-proof and gas permeable properties, directly layered on film or fiber, with the applications for feminine hygiene products, infant diapers, outdoor and camping equipment, and, in particular, to a method for preparing polymer membranes having water-proof and gas permeable properties by use of acidic or alkaline solutions,
  • polymer membranes having water-proof and gas permeable properties are defined to those passing not liquid or solid substances, but only gaseous substances.
  • such polymer membranes can be prepared in three manners: a porous membrane-forming method (A), a pore-forming method (B) and a pore-forming method (C).
  • A a porous membrane-forming method
  • B a pore-forming method
  • C a pore-forming method
  • polymers which are membrane materials are dissolved in polar solvent, added with DMF (N,N-dimethyl formamide), wet-molded in a film form, immersed in aqueous solution to extract the polar solvent contained in said film, to produce a porous membrane.
  • the pore forming method (B) comprises mixing polymer materials having high elongation ratio with moisture-controlled inorganic fillers, extrusion-molding the mixture in a film form, and elongating the film.
  • the pore forming method (C) is composed of mixing soluble inorganic salt or soluble polymer with the corresponding polymer materials, extrusion-molding the mixture to form a fi lm, and immersinp the film in water to dissolve nut and remove ⁇ aiH
  • the method (A) suffers from the disadvantages of limited selection of polymer materials because only those polymers which can be dissolved in polar solvents can be used, and it is difficult control of pore sizes and number.
  • the method (B) is advantageous in terms of easy control of pore size, but disadvantageous in being unable to use polymers having high elongation ratio.
  • usable inorganic salt is water-soluble so that it is reacted with water at room temperature, thus grains being coagulated, thereby lowering workability. Additionally, water-soluble polymers are swelled when dissolved in water within the polymer matrix, and thus a long period of time is required to extract the polymers.
  • steam permeability (Q) of polymer membrane having waterproof and gas permeable properties is proportional to surface area (A), permeation time (T), and difference of pressure ( ⁇ P) of steam attributed to different temperature at the surface contacted with liquid, and is inverse proportion to thickness (L), as represented in the following equation:
  • a proportionality constant K is a permeability constant, and shown as the sum of a diffusion constant showing mobility of gas-phase water molecules in polymer membrane and a solubility constant showing steam solubility in polymers, which determines gas permeability.
  • the diffusion constant should be increased.
  • the diffusion constant becomes larger.
  • the polymer membrane having waterproof and gas permeable properties should have a pore size limited within the range not causing osmotic phenomenon of water, and great numbers of pores.
  • a method for preparing polymer membranes comprising mixing polymers which are membrane materials, with suitable amounts of granular inorganic ingredients soluble in acidic or alkaline solution, molding the mixture in a film form, immersing the film mold in acidic or alkaline solution to dissolve out and thus remove the granular inorganic ingredients contained in polymer membranes.
  • granular inorganic ingredients soluble in acidic or alkaline solution
  • polymers which are membrane materials, molded in a film form, followed by immersing the film mold in acidic or alkaline solution and thus removing the granular inorganic ingredients by chemical reaction, thereby preparing a desired polymer membrane having water-proof and gas permeable properties.
  • any granular inorganic ingredients may be used, so long as they are soluble in acidic or alkaline solution, for example, including metal oxides, such as zinc oxide, magnesium oxide and so on; metal powders, such as iron powder, aluminum powder etc.; calcium carbonate, magnesium carbonate and the like.
  • polymers which can be molded into film form can be used without need for differentiating thermoplastic or thermosetting materials.
  • the preparation methods of a polymer membrane with water-proof and gas permeable properties using granular inorganic ingredients are classified into two manners: the first comprising uniformly mixing granular inorganic ingredients with a solution of polymers in suitable solvent, coating the mixture onto a substrate such as glass plate or stainless steel plate in suitable thickness, drying, peeling off, to form a membrane film, or directly coating the mixture on fiber or paper materials to be coated to polymer membrane and drying to form a membrane, which is immersed in acidic or alkaline solution to remove the granular inorganic ingredients; the second manner comprising heating-mixing thermoplastic polymer materials of pellet or powder phases with granular inorganic ingredients, molding the heated mixture into film form by extrusion or calendaring in the film form, and immersing the film in acidic or alkaline solution to remove the granular inorganic ingredients.
  • sizes and amounts of granular inorganic ingredients are important factors determining pore size and gas permeability of final products.
  • the average grain size ranges, but is not limited to, 0.1 -20 ⁇ m, and the used amount is in the range of about 60-800 parts by weight on a basis of
  • a rubber composition comprising 100 parts by weight of natural rubber, 5 parts by weight of zinc oxide, 2.5 parts by weight of stearic acid, 2.5 parts by weight of sulfur for rubber, 2.5 parts by weight of dibenzothiazyl disulfide and 0.5 parts by weight of BZ (zinc di-n-butyldithiocarbamate), kneaded on an open roll, was dissolved in 500 parts by weight of toluene, and added with calcium carbonate
  • the toluene-removed test pieces were introduced to an iron mold and vulcanized under the condition of 200 kg/cm 2 x 150 °C for 10 minutes. Subsequently, the vulcanized test pieces were cut into sheets of width 5 cm x length 5 cm x thickness 2 mm, immersed in 5 % diluted hydrochloric acid solution at ambient temperature for 24 hours, followed by washing and drying the test pieces. Then, weights before and after immersion in hydrochloric acid of the samples were measured to observe formation of pores according to the amounts of the mixed calcium carbonate. The results are shown in Table 2, below.
  • a rubber composition comprising 100 parts by weight of Neoprene AD, 8 parts by weight of MgO, 5 parts by weight of ZnO, and 40 parts by weight of phenol resin was dissolved in toluene to have a solid content of 10 wt%, and added with 70 parts by weight of calcium carbonate, to yield a uniformly dispersed mixture. Thereafter, the mixture was applied to a fabric cloth woven with nylon fibers by use of a knife coater in the amount of 20 g/m 2 , dried at ambient temperature for 10 minutes, and then vulcanized under hot atmosphere of 150 °C.
  • the vulcanized samples were immersed in 5 % hydrochloric acid solution at room temperature for 10 minutes, thereby thoroughly dissolving out the calcium carbonate. After washing and drying, a polymer membrane having water-proof and gas permeable properties was laminated on nylon fabric cloth. The moisture permeability of thusly obtained polymer membrane was measured as 9800 g/m 2 • 24 hrs by use of JISL-1099 (A-l) method.
  • the present experiment was performed in the same manner as described in the example 2, except that metal aluminum powder and 30 % caustic soda solution were substituted for calcium carbonate and 5 % hydrochloric acid solution, respectively. So, a polymer membrane with water-proof and gas permeable properties was layered on nylon fabric cloth, after which the membrane moisture permeability was measured in the same method as in the example 2, and found to be 8700 g/m 2 • 24 hrs.
  • the samples were immersed in 5 % hydrochloric acid solution at room temperature for 15 minutes, taken out of the solution and then washed and dried, to obtain a polymer membrane having waterproof and gas permeable properties, which was layered on nylon fabric cloth.
  • the moisture permeability test of the obtained polymer membrane was performed in the same manner as in the above example 2. The moisture permeability was 9100 g/m 2 • 24 hrs.
  • the polymer membrane prepared according to the method of the present invention is advantageous in terms of excellent water-proof and gas permeable effect, simplified preparation process, and decreased preparation cost.
  • the present polymer membranes in the form directly laminated onto film or fiber can be applied to the fields of feminine hygiene products, infant diapers, outdoor and camping equipment and so on.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

L'invention concerne un procédé de préparation d'une membrane polymère possédant des propriétés imperméables à l'eau et perméables au gaz. La membrane est directement appliquée sur un film ou une fibre, présente un caractère avantageux du point de vue de l'imperméabilité à l'eau et de la perméabilité au gaz, est obtenue au moyen de procédés de préparation simples et présente le coût de préparation le plus bas. Le procédé consiste à mélanger des matériaux polymères avec des ingrédients granuleux inorganiques solubles dans une solution acide ou alcaline, à mélanger le mélange dans une forme de film et à immerger le moule dans la solution acide ou alcaline, de manière à le dissoudre et à éliminer les ingrédients granuleux inorganiques, en vue d'obtenir une membrane polymère possédant des propriétés imperméables à l'eau et perméables au gaz.
PCT/KR2001/000608 2000-10-27 2001-04-11 Procede de preparation d'une membrane polymere possedant des proprietes impermeables a l'eau et permeables au gaz Ceased WO2002034819A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001250651A AU2001250651A1 (en) 2000-10-27 2001-04-11 Method for the preparation of the polymer membrane having water-proof and gas permeable properties

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR200/63458 2000-10-27
KR1020000063458A KR20020032796A (ko) 2000-10-27 2000-10-27 통기 방수성 고분자 막 제조방법

Publications (1)

Publication Number Publication Date
WO2002034819A1 true WO2002034819A1 (fr) 2002-05-02

Family

ID=19695766

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2001/000608 Ceased WO2002034819A1 (fr) 2000-10-27 2001-04-11 Procede de preparation d'une membrane polymere possedant des proprietes impermeables a l'eau et permeables au gaz

Country Status (3)

Country Link
KR (1) KR20020032796A (fr)
AU (1) AU2001250651A1 (fr)
WO (1) WO2002034819A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010110739A1 (fr) * 2009-03-25 2010-09-30 Haiqing Gong Filtre
EP3178873A1 (fr) 2015-12-08 2017-06-14 ETH Zurich Membranes poreuses respirantes et imperméables à l'eau
EP3858471A1 (fr) * 2020-01-31 2021-08-04 Novamem AG Production sans solvant de structures polymères poreuses
EP3936658A1 (fr) * 2020-07-06 2022-01-12 Dimpora AG Fabrication tridimensionnelle d'une membrane poreuse et imperméable à l'eau
CN115087695A (zh) * 2020-03-06 2022-09-20 Eth苏黎世公司 制造膜的无溶剂方法
JP7779841B2 (ja) 2020-01-31 2025-12-03 ノバメム・アクチェンゲゼルシャフト 溶媒を用いない多孔質ポリマー構造の生産

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200454317Y1 (ko) * 2011-02-23 2011-06-28 신경임 약장 조립체

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62167332A (ja) * 1986-01-21 1987-07-23 Mitsui Toatsu Chem Inc ポリオレフイン多孔性フイルム及びその製造方法
JPH0236938A (ja) * 1988-07-27 1990-02-06 Mitsubishi Kasei Corp 積層体
JPH0931228A (ja) * 1995-07-21 1997-02-04 Tokuyama Corp 多孔性フィルム

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07118429A (ja) * 1993-10-26 1995-05-09 Tonen Chem Corp ポリプロピレン多孔性フイルムの製法
KR0125308B1 (ko) * 1994-06-28 1997-11-28 조동식 음향기기의 자동슬립(sleep) 방법

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62167332A (ja) * 1986-01-21 1987-07-23 Mitsui Toatsu Chem Inc ポリオレフイン多孔性フイルム及びその製造方法
JPH0236938A (ja) * 1988-07-27 1990-02-06 Mitsubishi Kasei Corp 積層体
JPH0931228A (ja) * 1995-07-21 1997-02-04 Tokuyama Corp 多孔性フィルム

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010110739A1 (fr) * 2009-03-25 2010-09-30 Haiqing Gong Filtre
US8758542B2 (en) 2009-03-25 2014-06-24 Nanyang Technological University Filter
EP3178873A1 (fr) 2015-12-08 2017-06-14 ETH Zurich Membranes poreuses respirantes et imperméables à l'eau
WO2017097778A1 (fr) 2015-12-08 2017-06-15 Eth Zurich Membranes poreuses imperméables et respirantes
US10865516B2 (en) 2015-12-08 2020-12-15 Eth Zurich Waterproof and breathable, porous membranes
EP3858471A1 (fr) * 2020-01-31 2021-08-04 Novamem AG Production sans solvant de structures polymères poreuses
WO2021152029A1 (fr) 2020-01-31 2021-08-05 Novamem Ag Production sans solvant de structures polymères poreuses
JP2023511759A (ja) * 2020-01-31 2023-03-22 ノバメム・アクチェンゲゼルシャフト 溶媒を用いない多孔質ポリマー構造の生産
JP7779841B2 (ja) 2020-01-31 2025-12-03 ノバメム・アクチェンゲゼルシャフト 溶媒を用いない多孔質ポリマー構造の生産
CN115087695A (zh) * 2020-03-06 2022-09-20 Eth苏黎世公司 制造膜的无溶剂方法
EP3936658A1 (fr) * 2020-07-06 2022-01-12 Dimpora AG Fabrication tridimensionnelle d'une membrane poreuse et imperméable à l'eau
WO2022008370A1 (fr) * 2020-07-06 2022-01-13 Dimpora Ag Fabrication tridimensionnelle de membrane poreuse et imperméable à l'eau

Also Published As

Publication number Publication date
KR20020032796A (ko) 2002-05-04
AU2001250651A1 (en) 2002-05-06

Similar Documents

Publication Publication Date Title
Lü et al. Preparation of PU modified PVDF antifouling membrane and its hydrophilic performance
US4262041A (en) Process for preparing a composite amphoteric ion exchange membrane
JP4805939B2 (ja) 多層化親水性コーティング層を含んで成る複合材料
JP5135325B2 (ja) ポリウレタン−ポリ尿素に基づく微孔性被膜の製造方法
JPS62196390A (ja) イオン透過性隔膜及びその製造方法
Liu et al. High-flux thin-film composite polyelectrolyte hydrogel membranes for ethanol dehydration by pervaporation
CN100490955C (zh) 复合型半渗透亲水性滤膜的生产方法
WO2002034819A1 (fr) Procede de preparation d'une membrane polymere possedant des proprietes impermeables a l'eau et permeables au gaz
Imtiaz et al. Direct ink writing of dehydrofluorinated Poly (Vinylidene Difluoride) for microfiltration membrane fabrication
DE60032956T2 (de) Ionenselektive membranen, verfahren zu ihrer herstellung, verwendung der ionenselektiven membranen und vorrichtungen, die mit den ionenselektiven membranen versehen sind
He et al. Multifunctional photo-crosslinked polymeric ionic hydrogel films
CN117000047A (zh) 一种耐氧化性、抗菌、大通量反渗透膜及其制备方法和应用
CN112516817A (zh) 一种聚偏氟乙烯疏松纳滤膜及其制备方法和应用
CA1269209A (fr) Methode de traitement a l'appret pour tissus de polytetrafluoroethylene
CN107805316B (zh) 一种聚氨酯涂层材料及其制备方法
MXPA04006817A (es) Usos novedosos de polimeros.
CN110061175B (zh) 锂电池、锂电池隔膜及其制备方法
CN109382002B (zh) 一种基于纳米凝胶的智能开关膜及其制备方法
CN108889142A (zh) 一种聚乙烯醇-羟乙基纤维素/聚丙烯腈气体除湿膜制备方法
CN110860212B (zh) 一种具有自清洁性能的智能开关膜的制备方法
Ghosh et al. Synthesis and characterization of porous polyurethaneurea membranes for pervaporative separation of 4-nitrophenol from aqueous solution
Stajčić et al. Adsorption kinetics of polyethersulfone membrane-supported hydrogels
CN120737419A (zh) 一种高透湿的溶剂环保型防水透湿膜及其制备方法
CN112516818B (zh) 一种pvdf/sma复合膜及其制备方法和应用
CN116622217B (zh) 一种共混改性复合乳液及其制备方法、MOFs复合膜材料及其应用

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP