WO2010110333A1 - 陰イオン交換膜及びその製造方法 - Google Patents
陰イオン交換膜及びその製造方法 Download PDFInfo
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- 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
- C08J5/2206—Films, membranes or diaphragms based on organic and/or inorganic macromolecular compounds
- C08J5/2218—Synthetic macromolecular compounds
- C08J5/2231—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/44—Ion-selective electrodialysis
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- 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
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
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- 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
- B01D71/38—Polyalkenylalcohols; Polyalkenylesters; Polyalkenylethers; Polyalkenylaldehydes; Polyalkenylketones; Polyalkenylacetals; Polyalkenylketals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/38—Polyalkenylalcohols; Polyalkenylesters; Polyalkenylethers; Polyalkenylaldehydes; Polyalkenylketones; Polyalkenylacetals; Polyalkenylketals
- B01D71/381—Polyvinylalcohol
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- 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
- B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
- B01D71/80—Block polymers
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J41/00—Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
- B01J41/08—Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
- B01J41/12—Macromolecular compounds
- B01J41/14—Macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F293/00—Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
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- 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
- C08J5/2287—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/16—Membrane materials having positively charged functional groups
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- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/18—Homopolymers or copolymers of aromatic monomers containing elements other than carbon and hydrogen
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/14—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
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- C08J2339/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Derivatives of such polymers
- C08J2339/02—Homopolymers or copolymers of vinylamine
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
Definitions
- the present invention relates to an anion exchange membrane comprising a vinyl alcohol polymer block (A) and a polymer block (B) having a cationic group as constituent components and a crosslinked component as a main component. It is. More specifically, the present invention relates to an anion exchange membrane useful for electrodialysis with low membrane resistance and low organic contamination of the membrane.
- Ion exchange membranes are currently used for a wide variety of applications such as seawater concentration, desalination of groundwater for drinking water and removal of nitrate nitrogen, salt removal in food manufacturing processes, and concentration of active pharmaceutical ingredients. It is used as a membrane in electrodialysis and diffusion dialysis.
- the useful ion exchange membranes used in these are mainly styrene-divinylbenzene-based homogeneous ion exchange membranes, which have a variety of features such as mono- and divalent ion selection, increased selectivity of specific ions, and lower membrane resistance. Technology has been developed and industrially useful separation has been achieved.
- salts are often produced as a by-product.
- the salts contained in such organic substances are often separated by electrodialysis.
- cation exchange membranes and anion exchange membranes are arranged alternately, and direct current is applied to cause cations to flow on the cathode side of the cation exchange membrane and on the anode side of the anion exchange membrane.
- Desalting is realized by eliminating the anion and thus removing the salt from the electrolyte solution concentrated in the chamber formed by being sandwiched between the cation exchange membrane on the cathode side and the anion exchange membrane on the anode side.
- organic pollutants in the liquid to be treated especially macromolecules having a charge (hereinafter referred to as giant organic ions) adhere to the ion exchange membrane and reduce the performance of the membrane.
- giant organic ions adhere to the ion exchange membrane and reduce the performance of the membrane.
- the problem of organic contamination of the film arises.
- anion exchange membranes are likely to be organically contaminated, and the membrane performance gradually deteriorates as the dialysis cycle progresses.
- the contamination is significant, the membrane may swell or break down significantly in a relatively short period of time.
- an anion exchange membrane that prevents the invasion of giant organic ions into the membrane is known as an anion exchange membrane that suppresses organic contamination.
- This is a film in which a thin layer having a charge opposite to neutral, amphoteric or ion exchange groups is formed on the membrane surface.
- the effect of the anion exchange membrane is more remarkable as the membrane structure is denser and the molecular weight of the giant organic ions is larger.
- there is an anion exchange membrane in which a sulfonic acid group having an opposite charge is introduced into the surface layer portion of a resin membrane having an anion exchange group to suppress infiltration of anionic giant organic ions into the membrane (Patent Document 1).
- an anion exchange membrane with improved organic contamination by devising the structure of anion pairs of anion exchange groups (Patent Document 2).
- Japanese Patent Publication No.51-40556 Japanese Patent Laid-Open No. 3-146525 JP 59-189113 A JP 59-187003 A
- the anion exchange membrane that prevents the infiltration of the giant organic ions into the membrane can exhibit a certain degree of organic contamination resistance. It has the disadvantage that the film resistance is remarkably increased by the formation.
- an anion exchange membrane with a modified anion pair structure of an anion exchange group does not satisfy the organic contamination resistance.
- an object of the present invention is to provide an ion exchange membrane that suppresses organic contamination, has excellent basic properties such as membrane resistance and ion selectivity, and is useful for electrodialysis.
- a block copolymer (P) comprising a vinyl alcohol polymer block (A) and a polymer block (B) having a cationic group as constituents, the main component of which has been subjected to crosslinking treatment
- the anion exchange membrane contained in the present invention has been found to be useful for electrodialysis exhibiting excellent organic contamination resistance without degrading basic properties such as membrane resistance and ion transport number, and completes the present invention. It came to.
- the polymer block (B) preferably has the following general formulas (2) to (7) as repeating units.
- R 1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms
- R 2 , R 3 and R 4 may each independently have a hydrogen atom or a substituent
- Y represents a heteroatom.
- Y represents a divalent linking group having a total carbon number of 1 to 8, which may be interposed via X.
- X ⁇ represents an anion.
- R 5 represents a hydrogen atom or a methyl group.
- R 2 , R 3 , R 4 and X ⁇ have the same meanings as in the general formula (2).
- n 0 or 1
- R 2 , R 3 , R 4 , and X ⁇ have the same meaning as in the general formula (2).
- the anion exchange of the present invention preferably has an ion exchange capacity of 0.30 meq / g or more.
- a block copolymer (P) comprising a vinyl alcohol polymer block (A) and a polymer block (B) having a cationic group as constituent components, a polymerization degree of 200 to 8000, and a saponification degree of 80 mol% or more. It is a mixture with the vinyl alcohol polymer (Q), and the mass ratio (P / Q) of the block copolymer (P) and the vinyl alcohol polymer (Q) is 3/97 or more,
- the above-mentioned problem can also be solved by using an anion exchange membrane containing the applied material as a main component.
- the polymer block (B) in the block copolymer (P) preferably has the above general formulas (2) to (7) as repeating units. Further, the ion exchange capacity is preferably 0.30 meq / g or more.
- the production method of the present invention comprises a film obtained from a solution of a block copolymer (P) or a film obtained from a solution of a mixture of a block copolymer (P) and a vinyl alcohol polymer (Q), After the heat treatment at a temperature of 100 ° C. or higher, the anion exchange membrane of the present invention is subjected to a crosslinking treatment with a dialdehyde compound under acidic conditions in water, alcohol or a mixed solvent thereof, and then washed with water. It is to provide.
- the anion exchange membrane of the present invention has high hydrophilicity and thus has high resistance to organic contamination and low membrane resistance. Furthermore, since the swelling of the membrane due to humidity can be suppressed by using the block copolymer, the membrane strength is high, and electrodialysis can be performed efficiently and stably over a long period of time.
- the anion exchange membrane of the present invention is a block copolymer (P) comprising a vinyl alcohol polymer block (A) and a polymer block (B) having a cationic group as constituent components, and is subjected to a crosslinking treatment.
- An anion exchange layer mainly composed of the above is provided.
- the feature of the anion exchange membrane of the present invention is mainly composed of a vinyl alcohol polymer block (A) and a block copolymer (P) comprising a polymer block (B) having a cationic group as constituent components.
- the most important property of an anion exchange membrane is anion conductivity (anion mobility). Here, it is important how to form a path (ion channel) through which the anion in the membrane passes.
- the block copolymer of the present invention comprises a vinyl alcohol polymer block (A) and a polymer block (B) having a cationic group, and the strength, shape retention, and organic resistance of the entire anion exchange membrane.
- the microphase separation structure of the vinyl alcohol polymer block (A) and the polymer block (B) can be easily controlled, so that the polymer block (B) functioning as an ion channel can be controlled.
- the diameter and structure of the continuous phase can be easily controlled.
- the ratio of the number of repeating units of the vinyl alcohol polymer block (A) and the polymer block (B) is preferably in the range of 99: 1 to 50:50, and in the range of 98: 2 to 60:40. More preferably, the range is 95: 5 to 70:30.
- repeating unit of the polymer block (B) in the block copolymer (P) is not particularly limited, but examples thereof include repeating units represented by the following general formulas (2) to (7).
- R 1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms
- R 2 , R 3 and R 4 may each independently have a hydrogen atom or a substituent
- Y represents a heteroatom.
- Y represents a divalent linking group having a total carbon number of 1 to 8, which may be interposed via X.
- X ⁇ represents an anion.
- R 5 represents a hydrogen atom or a methyl group.
- R 2 , R 3 , R 4 and X ⁇ have the same meanings as in the general formula (2).
- n 0 or 1
- R 2 , R 3 , R 4 , and X ⁇ have the same meaning as in the general formula (2).
- the feature of the anion exchange membrane of the present invention is that the main component is a block copolymer (P) comprising a vinyl alcohol polymer block (A) and a polymer block (B) having an anion exchange group as constituent components. It is to do.
- An important characteristic of an anion exchange membrane is the charge density in the membrane. For example, when used for electrodialysis, it is a well-known fact that the charge density greatly affects the transport number of ions. Here, it is important how to suppress the degree of swelling while increasing the amount of charge in the membrane.
- the block copolymer which is the main component of the anion exchange membrane of the present invention is composed of a vinyl alcohol polymer block (A) and a polymer block (B) having an anion exchange group. Is done.
- the vinyl alcohol polymer block (A) has high hydrophilicity and contributes to the strength of the entire anion exchange membrane, suppression of the degree of swelling, and shape retention.
- the role of the vinyl alcohol polymer block (A) and the polymer block (B) exhibiting ion exchange properties is divided so that a high charge density, suppression of swelling degree, and dimensions are achieved. Succeeded in achieving both stability and maintenance.
- such an ion exchange membrane of the present invention has a low membrane resistance and an excellent organic contamination resistance.
- a block copolymer is used, so that the microphase separation structure of the vinyl alcohol polymer block (A) and the polymer block (B) can be easily controlled. Therefore, there is an advantage that the diameter and structure of the continuous phase of the polymer block (B) functioning as an ion exchange site can be easily controlled.
- the block copolymer (P) which is the main component of the anion exchange membrane of the present invention is subjected to a crosslinking treatment.
- the production method of the block polymer (P) is mainly divided into the following two methods. (1) a method of producing a block copolymer using at least one monomer having a cationic group and another monomer, and (2) after producing the block copolymer, This is a method of introducing a group.
- at least one monomer containing a cationic group is radically polymerized with a vinyl alcohol polymer (block (A)) having a mercapto group at the terminal to block copolymerization.
- a method for producing a coalescence is preferable from the industrial ease.
- the vinyl alcohol polymer (block (A)) containing a mercapto group at the terminal is block copolymerized with one or more monomers to obtain a block copolymer
- a method of obtaining a block copolymer (P) containing a polymer block (B) having a cationic group by introducing a cationic group into the block copolymer can be mentioned.
- the vinyl alcohol polymer block (A) and the vinyl block having a mercapto group at the terminal can be easily controlled because the type and amount of each component of the polymer block (B) having a cationic group can be easily controlled.
- a method of producing a block copolymer by radical polymerization of at least one monomer having a cationic group with an alcohol polymer (block (A)) is preferred.
- a vinyl alcohol polymer having a mercapto group at the terminal can be obtained by a method described in Patent Document 4, for example. That is, a method of saponifying a vinyl ester polymer obtained by radical polymerization of a vinyl ester monomer, for example, a vinyl monomer mainly composed of vinyl acetate in the presence of thiolic acid.
- the degree of saponification of the vinyl alcohol polymer having a mercapto group at the terminal is not particularly limited, but it is preferably 40 to 99.9 mol%. When the degree of saponification is less than 40 mol%, the crystallinity of the vinyl alcohol polymer block (A) is lowered, and the strength of the anion exchange membrane may be insufficient.
- the saponification degree is more preferably 60 mol% or more, and further preferably 80 mol% or more.
- the saponification degree of the vinyl alcohol polymer having a mercapto group at the terminal is usually 99.9 mol% or less.
- the saponification degree of polyvinyl alcohol is a value measured according to JIS K6726.
- the degree of polymerization of the vinyl alcohol polymer containing a mercapto group at the terminal is preferably 100 or more and 3500 or less, more preferably 200 or more and 3000 or less, and further preferably 250 or more and 2500 or less.
- the degree of polymerization is less than 100, there is a possibility that the membrane strength of the anion exchange membrane containing the finally obtained block copolymer (P) as a main component is insufficient.
- the degree of polymerization exceeds 3500, there is a possibility that the mercapto group introduced into the vinyl alcohol polymer is insufficient, and the block polymer (P) cannot be obtained efficiently.
- the viscosity average polymerization degree of polyvinyl alcohol is a value measured according to JIS K6726.
- Patent Document 3 As a method of obtaining a block copolymer (P) using a vinyl alcohol polymer containing a mercapto group at the terminal thus obtained and a monomer containing a cationic group, for example, Patent Document The method described in 3 etc. is mentioned. That is, for example, as described in Patent Document 3, a block copolymer (P) is obtained by radical polymerization of a monomer having a cationic group in the presence of a vinyl alcohol polymer having a mercapto group at the terminal. Can be obtained.
- This radical polymerization can be carried out by a known method such as bulk polymerization, solution polymerization, pearl polymerization, emulsion polymerization, etc., but a solvent capable of dissolving a vinyl alcohol polymer containing a mercapto group at the terminal, such as water or dimethyl It is preferably carried out in a medium mainly composed of sulfoxide.
- a solvent capable of dissolving a vinyl alcohol polymer containing a mercapto group at the terminal such as water or dimethyl It is preferably carried out in a medium mainly composed of sulfoxide.
- any of a batch method, a semi-batch method, and a continuous method can be employed.
- the radical polymerization may be performed by using a polymerization system selected from ordinary radical polymerization initiators such as 2,2′-azobisisobutyronitrile, benzoyl peroxide, lauroyl peroxide, diisopropyl peroxycarbonate, potassium persulfate, and ammonium persulfate.
- a polymerization system selected from ordinary radical polymerization initiators such as 2,2′-azobisisobutyronitrile, benzoyl peroxide, lauroyl peroxide, diisopropyl peroxycarbonate, potassium persulfate, and ammonium persulfate.
- an oxidizing agent such as potassium bromate, potassium persulfate, ammonium persulfate, hydrogen peroxide, etc. It is also possible to initiate the polymerization by a redox reaction.
- the polymerization system is desirably acidic. This is because the mercapto group has a high rate of ionic addition and disappearance to the double bond of the monomer under basic conditions, and the polymerization efficiency is remarkably reduced. In the case of aqueous polymerization, it is preferable to carry out all the polymerization operations at pH 4 or less.
- Examples of the monomer having a cationic group used when synthesizing the block copolymer (P) by the above-described method include trimethyl-p-vinylbenzylammonium chloride, trimethyl-m-vinylbenzylammonium chloride, Triethyl-p-vinylbenzylammonium chloride, triethyl-m-vinylbenzylammonium chloride, N, N-dimethyl-N-ethyl-Np-vinylbenzylammonium chloride, N, N-diethyl-N-methyl-Np -Vinylbenzylammonium chloride, N, N-dimethyl-Nn-propyl-Np-vinylbenzylammonium chloride, N, N-dimethyl-Nn-octyl-Np-vinylbenzylammonium chloride, N, N-dimethyl-N- N-Np-vinylbenzylammoni
- monomethyl diallylammonium chloride trimethyl-2- (methacryloyloxy) ethylammonium chloride, triethyl-2- (methacryloyloxy) ethylammonium chloride, trimethyl-2- (acryloyloxy) ethylammonium chloride, triethyl- 2- (acryloyloxy) ethylammonium chloride, trimethyl-3- (methacryloyloxy) propylammonium chloride, triethyl-3- (methacryloyloxy) propylammonium chloride, trimethyl-2- (methacryloylamino) ethylammonium chloride, triethyl-2- (Methacryloylamino) ethylammonium chloride, trimethyl-2- (acryloylamino) ethyl Ammonium chloride, triethyl-2- (acryloylamino) ethyl Ammonium
- the polymer block (B) having a cationic group has a cationic group in order to impart high ion exchange properties to the anion exchange membrane of the present invention.
- Monomers that give monomer units having no cationic group include ⁇ -olefins such as ethylene, propylene, 1-butene, isobutene, and 1-hexene; acrylic acid or a salt thereof, or methyl acrylate Acrylic acid esters such as ethyl acrylate, n-propyl acrylate, isopropyl acrylate; methacrylic acid or salts thereof, or methacrylic acid esters such as methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate Other unsaturated carboxylic acids such as fumaric acid, maleic acid, itaconic acid, maleic anhydride, itaconic anhydride or derivatives thereof; acrylamide derivatives such as acrylamide, N-methylacrylamide, N-ethylacrylamide; methacrylamide, N -Methyl methacrylate Methamide derivatives such as amide and N-ethy
- the reaction temperature of the radical polymerization is not particularly limited, but usually 0 to 200 ° C. is appropriate.
- the progress of the polymerization is traced by various chromatographies, NMR spectra and the like to determine the termination of the polymerization reaction, thereby determining the vinyl alcohol polymer block (A) and the polymer block (B) as desired. Can be prepared in proportions.
- the polymerization reaction is stopped by a known method, for example, by cooling the polymerization system.
- the ion exchange capacity of the obtained block copolymer (P) is preferably 0.30 meq / g or more. More preferably, it is 0.50 meq / g or more.
- the upper limit of the ion exchange capacity of the block copolymer is preferably 3.0 meq / g or less, because if the ion exchange capacity becomes too large, hydrophilicity increases and it becomes difficult to suppress the degree of swelling.
- a method for producing the block copolymer (P) first, a block copolymer having the vinyl alcohol polymer block (A) and a block into which a cationic group can be introduced is produced, and then a cation is added to the block.
- a method of introducing a sex group is also preferable.
- a block copolymer into which a cationic group can be introduced is a method for producing a block copolymer (P) using the above-described vinyl alcohol polymer containing a mercapto group and a monomer having a cationic group. They can be produced by the same method except that a monomer having a site into which a cationic group can be introduced is used instead of the monomer having a cationic group.
- Examples of the monomer having a site into which a cationic group can be introduced include vinylpyridines such as 2-vinylpyridine, 4-vinylpyridine, 2-methyl-5-vinylpyridine, vinylpyrimidines, vinylquinolines, Examples thereof include vinyl carbazoles, vinyl imidazoles, o, m, p-vinylphenylalkylenealkylamines, dialkylaminoalkyl acrylates and dialkylaminoalkyl acrylates.
- the block copolymer is treated with a vapor or a solution of an alkyl halogen compound to quaternize the nitrogen atom. That's fine.
- the alkyl halogen compound used is represented by C p H 2p + 1 X or X (CH 2 ) q X (p is an integer of 1 to 12, q is an integer of 2 to 12, and X is a bromine or iodine atom). Any compound may be used.
- a trialkylamine may be allowed to act on it.
- the anion exchange membrane of the present invention comprises a block copolymer (P) obtained as described above, a polymerization degree of 200 to 8000 (more preferably 500 to 7000), a saponification degree of 80 mol% or more (more preferably). Is a mixture with a vinyl alcohol polymer (Q) of 85 mol% or more), and their mass ratio (P / Q) is 3/97 and contains a cross-linked treatment as a main component.
- An anion exchange membrane is also preferred.
- P block copolymer
- Q vinyl alcohol polymer
- an anion exchange membrane having sufficient ion exchange capacity and good organic contamination resistance and having high strength is obtained. be able to.
- the vinyl alcohol polymer (Q) is a copolymer of a vinyl ester monomer and a monomer as listed below, and the degree of polymerization of the portion composed of the vinyl ester monomer: May be 200 to 8000 (more preferably 500 to 7000), and the saponification degree of the same part may be 80 mol% or more (more preferably 85 mol% or more).
- Examples of the latter monomer include ⁇ -olefins such as ethylene, propylene, 1-butene, isobutene and 1-hexene; carboxylic acids such as fumaric acid, maleic acid, itaconic acid, maleic anhydride, itaconic anhydride or the like Derivatives; acrylic acid or salts thereof, or acrylic esters such as methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate; methacrylic acid or salts thereof, or methyl methacrylate, ethyl methacrylate, methacrylic acid Methacrylic acid esters such as n-propyl and isopropyl methacrylate; Acrylamide derivatives such as acrylamide, N-methylacrylamide and N-ethylacrylamide; Methacrylamide such as methacrylamide, N-methylmethacrylamide and N-ethylmethacrylamide Derivatives; Vinyl ethers such
- the vinyl alcohol polymer (Q) is also obtained by radical polymerization of a vinyl ester monomer in the presence of a thiol compound such as 2-mercaptoethanol, n-dodecyl mercaptan, mercaptoacetic acid, 3-mercaptopropionic acid.
- a terminal-modified vinyl alcohol polymer obtained by saponifying the obtained vinyl ester polymer, having a polymerization degree of 200 to 8000 (more preferably 500 to 7000) and a saponification degree of 80 mol% or more ( More preferably, it may be 85 mol% or more).
- the ratio (P / Q) of the block copolymer (P) and the vinyl alcohol polymer (Q) in the mixture is preferably 5/95 or more and preferably 10/90 or more in terms of mass ratio. More preferred. When the ratio (P / Q) of both is smaller than 3/97, the ion exchange property of the obtained anion exchange membrane is inadequate, and the performance of electrodialysis may not fully be exhibited.
- the anion exchange membrane of the present invention comprising a block copolymer (P) as a main component is obtained by heat-treating a film obtained from a solution of the block copolymer (P) at a temperature of 100 ° C. or higher, water, alcohol or It can be obtained by carrying out a crosslinking treatment with a dialdehyde compound under acidic conditions in these mixed solvents and then washing with water.
- the anion exchange membrane of the present invention comprising a mixture of a block copolymer (P) and a vinyl alcohol polymer (Q) as a main component is composed of a block copolymer (P) and a vinyl alcohol polymer (Q). After heat-treating the film obtained from the above solution at a temperature of 100 ° C. or higher, crosslinking is performed with a dialdehyde compound under acidic conditions in water, alcohol or a mixed solvent thereof, followed by washing with water. Can do.
- the solvent used for the solution of the block copolymer (P) or the mixture of the block copolymer (P) and the vinyl alcohol polymer (Q) is usually water, methanol, ethanol, 1-propanol, 2 -Lower alcohols such as propanol, or mixed solvents thereof.
- the film can be usually obtained by volatilizing the solvent in the solution by casting.
- the temperature during film formation is not particularly limited, but a temperature range of about room temperature to 100 ° C. is appropriate.
- the anion exchange membrane of the present invention preferably has a thickness of about 1 to 1000 ⁇ m from the viewpoint of ensuring performance, membrane strength, handling properties, etc. required as an electrolyte membrane for electrodialysis.
- the film thickness is less than 1 ⁇ m, the mechanical strength of the film tends to be insufficient.
- the film thickness exceeds 1000 ⁇ m, the membrane resistance increases and sufficient ion exchange properties are not exhibited, so that the electrodialysis efficiency tends to decrease.
- the film thickness is more preferably 5 to 500 ⁇ m, still more preferably 7 to 300 ⁇ m.
- the method for producing an anion exchange membrane of the present invention it is preferable to perform heat treatment.
- the method of heat treatment is not particularly limited, and a hot air dryer or the like is generally used.
- the temperature of the heat treatment is not particularly limited, but is preferably 50 to 250 ° C. If the temperature of the heat treatment is less than 50 ° C., the mechanical strength of the obtained ion exchange membrane may be insufficient.
- the temperature is more preferably 80 ° C. or higher, and more preferably 100 ° C. or higher.
- the temperature of the heat treatment exceeds 250 ° C., the crystalline polymer may be melted.
- the temperature is more preferably 230 ° C. or less, and further preferably 200 ° C. or less.
- the method for producing an anion exchange membrane of the present invention it is preferable to perform a crosslinking treatment.
- the method for the crosslinking treatment is not particularly limited as long as it is a method capable of bonding the molecular chains of the polymer by chemical bonding. Usually, a method of immersing in a solution containing a crosslinking agent is used.
- the crosslinking agent include formaldehyde or dialdehyde compounds such as glyoxal and glutaraldehyde.
- the film after the heat treatment is subjected to a crosslinking treatment by immersing it in a solution obtained by dissolving a dialdehyde compound in water, alcohol or a mixed solvent thereof under acidic conditions.
- a crosslinking treatment by immersing it in a solution obtained by dissolving a dialdehyde compound in water, alcohol or a mixed solvent thereof under acidic conditions.
- concentration of the crosslinking agent is usually 0.001 to 1% by volume of the crosslinking agent relative to the solution.
- both heat treatment and crosslinking treatment may be performed, or only one of them may be performed.
- the crosslinking treatment may be performed after the heat treatment, the heat treatment may be performed after the crosslinking treatment, or both may be performed simultaneously. It is preferable to perform a crosslinking treatment after the heat treatment in terms of mechanical strength of the obtained anion exchange membrane.
- H Membrane moisture content
- Membrane resistance was measured by sandwiching an anion exchange membrane in a two-chamber cell having a platinum black electrode plate shown in FIG. 2, filling a 0.5 mol / L-NaCl solution on both sides of the membrane, and an AC bridge. The resistance between the electrodes at 25 ° C. was measured by (frequency 1000 cycles / second), and was obtained from the difference between the resistance between the electrodes and the resistance between the electrodes when no anion exchange membrane was installed. The membrane used for the above measurement was previously equilibrated in a 0.5 mol / L-NaCl solution.
- amidopropyltrimethylammonium chloride methacrylate was dissolved in 200 g of water, added to the previously prepared aqueous solution with stirring, then heated to 70 ° C., and for 30 minutes while bubbling nitrogen into the aqueous solution. The system was replaced with nitrogen. After substituting with nitrogen, 121 mL of a 2.5% aqueous solution of potassium persulfate was sequentially added to the above aqueous solution over 1.5 hours to start and proceed with block copolymerization, and then the system temperature was raised to 75 ° C.
- the amount of modification of the quaternized vinylpyridine unit was 10 mol%).
- concentration of 4% was measured with the B-type viscosity meter, the viscosity was 16 milliPa * s (20 degreeC).
- the gelled product is taken out from the reaction system and pulverized. Then, when 1 hour has passed since the gelated product was formed, methyl acetate is added to the pulverized product.
- a cationic polymer of poly (vinyl alcohol-amidopropyltrimethylammonium methacrylate) in a swollen state was obtained.
- methanol was added in an amount 6 times (bath ratio 6 times) by mass, washed for 1 hour under reflux, and the polymer was collected by filtration. The polymer was dried at 65 ° C. for 16 hours.
- the obtained polymer was dissolved in heavy water and subjected to 1 H-NMR measurement at 400 MHz. As a result, the amount of modification of the amidopropyltrimethylammonium methacrylate unit was 5 mol%. Further, the viscosity of a 4% aqueous solution measured with a B-type viscometer was 18 milliPa ⁇ s (20 ° C.), and the degree of saponification was 98.5 mol%.
- Example 1 Production of ion exchange membrane
- An aqueous solution of P-1 was poured into an acrylic cast plate having a length of 270 mm and a width of 210 mm to remove excess liquid and bubbles, and then dried on a hot plate at 50 ° C. for 24 hours to prepare a film.
- the film thus obtained was heat treated at 140 ° C. for 30 minutes to cause physical crosslinking. Subsequently, the film was immersed in an aqueous electrolyte solution of 2 mol / L sodium sulfate for 24 hours.
- Concentrated sulfuric acid was added to the aqueous solution so that the pH was 1, and the film was immersed in a 0.05% by volume glutaraldehyde aqueous solution, followed by stirring with a stirrer at 25 ° C. for 24 hours for crosslinking treatment.
- glutaraldehyde aqueous solution a product obtained by diluting “glutaraldehyde” (25% by volume) manufactured by Ishizu Pharmaceutical Co., Ltd. with water was used.
- the film was immersed in deionized water, and while deionized water was exchanged several times in the middle, the film was immersed until the film reached a swelling equilibrium to obtain an anion exchange membrane.
- the anion exchange membrane thus produced was cut into a desired size to produce a measurement sample.
- the membrane water content, the maximum breaking stress, the anion exchange capacity, the dynamic transport number, the membrane resistance, and the organic contamination resistance were measured. The obtained results are shown in Table 3.
- Example 2 In Example 1, an anion exchange resin in which the mixing ratio of the block copolymer (P) and polyvinyl alcohol PVA124 (manufactured by Kuraray Co., Ltd.) was changed as shown in Table 3 was used. An anion exchange membrane was prepared and evaluated in the same manner as in Example 1 except that the contents were changed to those shown in FIG. The obtained results are shown in Table 3.
- Example 2 In Example 1, the membrane characteristics of the ion exchange membrane were measured in the same manner as in Example 1 except that Neoceptor AM-1 (styrene-divinylbenzene membrane; manufactured by Tokuyama Corporation) was used for the anion exchange membrane. . The obtained measurement results are shown in Table 3.
- Neoceptor AM-1 styrene-divinylbenzene membrane; manufactured by Tokuyama Corporation
- an anion exchange membrane comprising a block copolymer having a vinyl alcohol polymer block and a polymer block having a cationic group as a constituent component and subjected to a crosslinking treatment is used.
- the swelling can be kept low and the dynamic transport number, film resistance and organic contamination resistance are excellent (Examples 1 to 13).
- the mass ratio (P / Q) of the block copolymer (P) and the vinyl alcohol polymer (Q) is 3/97 or more, it can be seen that good maximum breaking stress can be obtained (Examples) 1-13).
- the heat treatment temperature is 100 ° C.
Abstract
Description
特許文献4に記載された方法によって、表1に示す分子末端にメルカプト基を有するポリビニルアルコールを合成した。
イオン交換膜の乾燥重量を予め測定しておき、その後、脱イオン水に浸漬し膨潤平衡に達したところで湿潤重量を測定した。膜含水率, Hは下式により算出した。
H=[(Ww-Dw)/1.0]/[(Ww-Dw)/1.0+(Dw/1.3)]
ここで1.0と1.3はそれぞれ水とポリマーの比重を示している。
・H:膜含水率[-]
・Dw:膜の乾燥重量[g]
・Ww:膜の湿潤重量[g]
JIS規格のポンチを用いて、陰イオン交換膜を幅2mm、長さ3cmのダンベル状に切り抜いて測定試料を作製した。測定には、株式会社島津製作所製小型卓上試験機「EZ-Test500N」を用いた。評点間距離を2cmとし、25℃の温度下で測定を行った。得られた破断点の応力から、下式により最大破断応力を算出した。
最大破断応力[MPa]=破断点の応力[MPa]×初期断面積[m2]/破断断面積[m2]
陰イオン交換膜を1mol/lのHCl水溶液に10時間以上浸漬した。その後、1mol/lのNaNO3水溶液で塩素イオン型を硝酸イオン型に置換させ、遊離した塩素イオンを電位差滴定装置(COMTITE-900;平沼産業株式会社製)で定量した(Amol)。
・イオン交換容量=A×1000/W [meq/g]
陰イオン交換膜の動的輸率は、図1に示される白金黒電極板を有する2室セル中にイオン交換膜を挟み、イオン交換膜の両側に0.5mol/L-NaCl溶液を満たし、所定時間(t)、所定電流密度(J=10mAcm-2)の電流密度で電気透析を行った。有効膜面積は8.0cm2(2cm×4cm)であった。その後、測定溶液を取り出し、その溶液を300mlメスフラスコにて希釈した。希釈溶液の伝導度を伝導度計にて測定し、得られた伝導度から下式に代入することで動的輸率td+を算出した。
td+=Δm/Ea
td+:動的輸率
Ea:理論当量=I・t/F
Δm:移動当量
F:Faraday定数
膜抵抗は、図2に示される白金黒電極板を有する2室セル中に陰イオン交換膜を挟み、膜の両側に0.5mol/L-NaCl溶液を満たし、交流ブリッジ(周波数1000サイクル/秒)により25℃における電極間の抵抗を測定し、該電極間抵抗と陰イオン交換膜を設置しない場合の電極間抵抗との差により求めた。上記測定に使用する膜は、あらかじめ0.5mol/L-NaCl溶液中で平衡にしたものを用いた。
得られた陰イオン交換膜をコンデショニングした後、銀、塩化銀電極を有する二室セルに該イオン交換膜を挟み、その陽極室には0.05mol/L-NaCl溶液を入れ、陰極室には1000ppmのドデシルベンゼンスルホン酸ナトリウムと0.05mol/L-NaClの混合溶液を入れた。両室の液を1500rpmの回転速度で攪拌し、0.2A/dm2の電流密度で電気透析を行った。この時、両膜表面の近傍に白金線を固定し、膜間電圧を測定した。通電中に有機汚染が起こると膜間電圧が上昇してくる。通電を開始して30分後の膜間電圧を測定し、有機汚染物質を添加した場合と添加しない場合の電圧差(ΔE)をとって膜の汚染性の尺度とした。
還流冷却管、攪拌翼を備え付けた5L四つ口セパラブルフラスコに、水2600g、末端にメルカプト基を有するビニルアルコール系重合体として表1に示すPVA-1を344g仕込み、攪拌下95℃まで加熱して該ビニルアルコール系重合体を溶解した後、室温まで冷却した。該水溶液に1/2規定の硫酸を添加してpHを3.0に調整した。別に、メタクリル酸アミドプロピルトリメチルアンモニウムクロライド183gを水200gに溶解し、これを先に調製した水溶液に攪拌下添加した後、70℃まで加温し、また、水溶液中に窒素をバブリングしながら30分間系内を窒素置換した。窒素置換後、上記水溶液に過硫酸カリウムの2.5%水溶液121mLを1.5時間かけて逐次的に添加してブロック共重合を開始、進行させた後、系内温度を75℃に1時間維持して重合をさらに進行させ、ついで冷却して、固形分濃度15%のPVA-(b)-p-メタクリル酸アミドプロピルトリメチルアンモニウムクロライドブロック共重合体水溶液を得た。得られた水溶液の一部を乾燥した後、重水に溶解し、400MHzでの1H-NMR測定に付した結果、メタクリル酸アミドプロピルトリメチルアンモニウムクロライド単位の変性量は10モル%であった。また、B型粘度計で測定した4%水溶液粘度は18ミリPa・s(20℃)であった。
カチオン性基含有単量体の種類と仕込み量、重合開始剤の使用量などの重合条件を表2に示すように変化させた以外はP-1と同様の方法により、P-2~P-5を得た。得られたポリマーの物性を、表2に示す。
カチオン性基含有単量体の種類と仕込み量、重合開始剤の使用量などの重合条件を表2に示すように変化させた以外はP-1と同様の方法により、固形分濃度15%のPVA-(b)-ビニルホルムアミドブロック共重合体水溶液を得た(得られた水溶液の一部を乾燥した後、重水に溶解し、400MHzでの1H-NMR測定に付した結果、ビニルホルムアミド単位の変性量は10モル%であった)。
P-6の濃度15%水溶液に水酸化ナトリウムを0.08mol%添加して、110度、1時間加熱することで加水分解させて、固形分濃度14%のPVA-(b)-ビニルアミンブロック共重合体水溶液を得た(得られた水溶液の一部を乾燥した後、重水に溶解し、400MHzでの1H-NMR測定に付した結果、ビニルアミン単位の変性量は10モル%であった)。また、B型粘度計で測定した4%水溶液粘度は16ミリPa・s(20℃)であった。
カチオン性基含有単量体の種類と仕込み量、重合開始剤の使用量などの重合条件を表2に示すように変化させた以外はP-1と同様の方法により、固形分濃度15%のPVA-(b)-ビニルピリジンブロック共重合体水溶液を得た(得られた水溶液の一部を乾燥した後、重水に溶解し、400MHzでの1H-NMR測定に付した結果、ビニルピリジン単位の変性量は10モル%であった)。
P-8の水溶液を、縦270mm×横210mmのアクリル製のキャスト板に流し込み、余分な液、気泡を除去した後、50℃のホットプレート上で24時間乾燥させることにより、皮膜を作製した。こうして得られた皮膜を、ヨウ化メチルの蒸気中、室温下で10時間処理を行いビニルピリジン部分を四級化することで、PVA-(b)-四級化ビニルピリジンブロック共重合体したフィルムを得た(得られたフィルムを重水に溶解し、400MHzでの1H-NMR測定に付した結果、四級化ビニルピリジン単位の変性量は10モル%であった)。また、濃度4%に調整した水溶液をB型粘度計で測定したところ、粘度は16ミリPa・s(20℃)であった。
攪拌機、温度センサー、滴下漏斗及び還流冷却管を備え付けた6Lセパラブルフラスコに、酢酸ビニル2156g、メタノール644g、及びメタクリル酸アミドプロピルトリメチルアンモニウムクロライドを25質量%含有するメタノール溶液126gを仕込み、攪拌下に系内を窒素置換した後、内温を60℃まで上げた。この系に2,2’-アゾビスイソブチロニトリルを0.8g含有するメタノール20gを添加し、重合反応を開始した。重合開始時点よりメタクリル酸アミドプロピルトリメチルアンモニウムクロライドを25質量%含有するメタノール溶液400gを系内に添加しながら、4時間重合反応を行った後、重合反応を停止した。重合反応を停止した時点における系内の固形分濃度、すなわち、重合反応スラリー全体に対する固形分の含有率は24質量%であった。ついで、系内にメタノール蒸気を導入することにより、未反応の酢酸ビニル単量体を追い出し、ビニルエステル共重合体を55質量%含有するメタノール溶液を得た。
(イオン交換膜の作製)
P-1の水溶液を縦270mm×横210mmのアクリル製のキャスト板に流し込み、余分な液、気泡を除去した後、50℃のホットプレート上で24時間乾燥させることにより、皮膜を作製した。こうして得られた皮膜を、140℃で30分間熱処理し、物理的な架橋を生じさせた。ついで、皮膜を2mol/Lの硫酸ナトリウムの電解質水溶液に24時間浸漬させた。該水溶液にそのpHが1になるように濃硫酸を加えた後、0.05体積%グルタルアルデヒド水溶液に皮膜を浸漬し、25℃で24時間スターラーを用いて撹拌し、架橋処理を行った。ここで、グルタルアルデヒド水溶液としては、石津製薬株式会社製「グルタルアルデヒド」(25体積%)を水で希釈したものを用いた。架橋処理の後、皮膜を脱イオン水に浸漬し、途中数回脱イオン水を交換しながら、皮膜が膨潤平衡に達するまで浸漬させ、陰イオン交換膜を得た。
このようにして作製した陰イオン交換膜を、所望の大きさに裁断し、測定試料を作製した。得られた測定試料を用い、上記方法にしたがって、膜含水率、最大破断応力、陰イオン交換容量、動的輸率の測定、膜抵抗の測定、耐有機汚染性の測定を行った。得られた結果を表3に示す。
実施例1において、ブロック共重合体(P)とポリビニルアルコールPVA124((株)クラレ製)の混合比を表3に示すように変更した陰イオン交換樹脂を用い、熱処理温度及び架橋条件を表3に示す内容に変更した以外は、実施例1と同様にして陰イオン交換膜を作製し、評価を行った。得られた結果を表3に示す。
実施例1において、陰イオン交換樹脂、熱処理温度、架橋条件を表3に示す内容に変更した以外は、実施例1と同様にして陰イオン交換膜の膜特性を測定した。得られた測定結果を表3に示す。
実施例1において、陰イオン交換膜にネオセプタAM-1(スチレン-ジビニルベンゼン系膜;(株)トクヤマ製)を用いた以外は、実施例1と同様にしてイオン交換膜の膜特性を測定した。得られた測定結果を表3に示す。
B:アンペアメーター
C:クーロンメーター
D:ボルトメーター
E:モーター
F:スターラー
G:カソード電極
H:アノード電極
I:0.5M NaCl水溶液
J:イオン交換膜(有効膜面積8.0cm2)
K:イオン交換膜(有効面積1.0cm2)
L:白金電極
M:NaCl水溶液
N:水浴
O:LCRメーター
Claims (14)
- ビニルアルコール系重合体ブロック(A)及びカチオン性基を有する重合体ブロック(B)を構成成分とするブロック共重合体(P)であって、架橋処理の施されたものを主成分として含有する陰イオン交換膜。
- イオン交換容量が、0.30meq/g以上である請求項1~5のいずれか1項に記載の陰イオン交換膜。
- ビニルアルコール系重合体ブロック(A)及びカチオン性基を有する重合体ブロック(B)を構成成分とするブロック共重合体(P)と、重合度200~8000、けん化度80モル%以上のビニルアルコール系重合体(Q)との混合物であって、ブロック共重合体(P)とビニルアルコール系重合体(Q)の質量比(P/Q)が3/97以上であり、架橋処理の施されたものを主成分として含有する陰イオン交換膜。
- イオン交換容量が、0.30meq/g以上である請求項7~11のいずれか1項に記載の陰イオン交換膜。
- ブロック共重合体(P)の溶液から得られる皮膜を、100℃以上の温度で熱処理した後、水、アルコール又はそれらの混合溶媒中で、酸性条件下においてジアルデヒド化合物による架橋処理を行い、ついで水洗処理することを特徴とする請求項1~6のいずれか1項に記載の陰イオン交換膜の製造方法。
- ブロック共重合体(P)とビニルアルコール系重合体(Q)との混合物の溶液から得られる皮膜を、100℃以上の温度で熱処理した後、水、アルコール又はそれらの混合溶媒中で、酸性条件下においてジアルデヒド化合物による架橋処理を行い、ついで水洗処理することを特徴とする請求項7~12のいずれか1項に記載の陰イオン交換膜の製造方法。
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CN201080023057.3A CN102449042B (zh) | 2009-03-25 | 2010-03-24 | 阴离子交换膜及其制造方法 |
KR1020117025111A KR101716168B1 (ko) | 2009-03-25 | 2010-03-24 | 음이온 교환 막 및 이의 제조 방법 |
EP10756129.2A EP2412752A4 (en) | 2009-03-25 | 2010-03-24 | ANION EXCHANGE MEMBRANE AND METHOD FOR PRODUCING THE SAME |
JP2011506094A JP5715558B2 (ja) | 2009-03-25 | 2010-03-24 | 陰イオン交換膜及びその製造方法 |
US14/218,080 US9321047B2 (en) | 2009-03-25 | 2014-03-18 | Anion exchange membrane and method for producing same |
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US14/218,080 Division US9321047B2 (en) | 2009-03-25 | 2014-03-18 | Anion exchange membrane and method for producing same |
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JP2013149462A (ja) * | 2012-01-19 | 2013-08-01 | Kuraray Co Ltd | 膜−電極接合体 |
JP2014088514A (ja) * | 2012-10-31 | 2014-05-15 | Kuraray Co Ltd | 陰イオン交換膜及びその製造方法 |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5140556B2 (ja) | 1971-11-26 | 1976-11-04 | ||
JPS59187003A (ja) | 1983-04-07 | 1984-10-24 | Kuraray Co Ltd | 末端にメルカプト基を有するポリビニルアルコ−ル系重合体およびその製法 |
JPS59189113A (ja) | 1983-04-08 | 1984-10-26 | Kuraray Co Ltd | ポリビニルアルコ−ル系重合体を一成分とするブロツク共重合体の製法 |
JPH03146525A (ja) | 1989-11-02 | 1991-06-21 | Asahi Glass Co Ltd | 耐ファウリング性陰イオン交換体 |
JP2007265955A (ja) * | 2005-07-26 | 2007-10-11 | Canon Inc | 高分子電解質膜、その製造方法、高分子電解質、電解質組成物、膜電極接合体及び燃料電池 |
JP2008525612A (ja) * | 2004-12-28 | 2008-07-17 | アクゾ ノーベル エヌ.ブイ. | ポリマー分散体及びポリマー分散体の調製方法 |
WO2008090774A1 (ja) * | 2007-01-23 | 2008-07-31 | Kuraray Co., Ltd. | 高分子電解質膜及びその製法、並びに膜-電極接合体及び固体高分子型燃料電池 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1566445A (ja) * | 1968-02-29 | 1969-05-09 | ||
BE757650A (fr) * | 1969-10-17 | 1971-04-16 | Rhone Poulenc Sa | Membranes echangeuses d'ions |
JPS5140556A (ja) | 1974-10-02 | 1976-04-05 | Hitachi Ltd | Gasuzetsuendenkikiki oyobi sonoseizoho |
US4355116A (en) * | 1980-12-29 | 1982-10-19 | Allied Corporation | Stable high performance bipolar membrane with cross-linked functional groups |
US4565854A (en) | 1983-04-07 | 1986-01-21 | Kuraray Co., Ltd. | Polymer having thiol end group |
JPH0735443B2 (ja) * | 1986-04-25 | 1995-04-19 | 東ソー株式会社 | アニオン交換膜およびその製造方法 |
JPS6377504A (ja) * | 1986-09-19 | 1988-04-07 | Tokuyama Soda Co Ltd | 有機物の脱塩方法 |
US5178854A (en) | 1988-03-24 | 1993-01-12 | Taisho Pharmaceutical Co., Ltd. | Cholesterol-lowering agents |
JPH01316324A (ja) * | 1988-03-24 | 1989-12-21 | Taisho Pharmaceut Co Ltd | コレステロール低下剤 |
JP3146525B2 (ja) | 1991-06-07 | 2001-03-19 | スズキ株式会社 | エンジン冷却水のリザーブタンク |
JPH07204523A (ja) * | 1994-01-19 | 1995-08-08 | Mitsubishi Chem Corp | 陰イオン交換樹脂およびその製造方法 |
JP3981598B2 (ja) * | 2001-06-29 | 2007-09-26 | 株式会社トクヤマ | イオン交換膜 |
ES2284747T3 (es) | 2001-06-29 | 2007-11-16 | Tokuyama Corporation | Membrana de intercambio ionico. |
JP5463506B2 (ja) * | 2005-03-16 | 2014-04-09 | 国立大学法人山口大学 | グラフトポリマー、高分子電解質膜、これらの製造方法、及びそれを用いた燃料電池 |
US20070026282A1 (en) * | 2005-07-26 | 2007-02-01 | Canon Kabushiki Kaisha | Polymer Electrolyte Membrane, Process For Production Thereof, Polymer Electrolyte, Electrolyte Composition, Membrane-Electrode Assembly, And Fuel Cell |
CN101284216B (zh) * | 2008-05-08 | 2011-05-18 | 中国科学技术大学 | 一种中空纤维阴离子交换膜及其制备方法 |
JP5140556B2 (ja) | 2008-11-11 | 2013-02-06 | 東光東芝メーターシステムズ株式会社 | 計量システム |
KR101716168B1 (ko) * | 2009-03-25 | 2017-03-14 | 주식회사 쿠라레 | 음이온 교환 막 및 이의 제조 방법 |
JP5413689B2 (ja) * | 2009-04-09 | 2014-02-12 | 国立大学法人山口大学 | モザイク荷電膜 |
EP2420310A4 (en) * | 2009-04-13 | 2013-04-17 | Univ Yamaguchi | ION EXCHANGE MEMBRANE AND MANUFACTURING METHOD THEREFOR |
-
2010
- 2010-03-24 KR KR1020117025111A patent/KR101716168B1/ko active IP Right Grant
- 2010-03-24 TW TW099108669A patent/TWI491438B/zh not_active IP Right Cessation
- 2010-03-24 WO PCT/JP2010/055110 patent/WO2010110333A1/ja active Application Filing
- 2010-03-24 CN CN201080023057.3A patent/CN102449042B/zh not_active Expired - Fee Related
- 2010-03-24 EP EP10756129.2A patent/EP2412752A4/en not_active Withdrawn
- 2010-03-24 US US13/259,981 patent/US8716358B2/en not_active Expired - Fee Related
- 2010-03-24 JP JP2011506094A patent/JP5715558B2/ja not_active Expired - Fee Related
-
2014
- 2014-03-18 US US14/218,080 patent/US9321047B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5140556B2 (ja) | 1971-11-26 | 1976-11-04 | ||
JPS59187003A (ja) | 1983-04-07 | 1984-10-24 | Kuraray Co Ltd | 末端にメルカプト基を有するポリビニルアルコ−ル系重合体およびその製法 |
JPS59189113A (ja) | 1983-04-08 | 1984-10-26 | Kuraray Co Ltd | ポリビニルアルコ−ル系重合体を一成分とするブロツク共重合体の製法 |
JPH03146525A (ja) | 1989-11-02 | 1991-06-21 | Asahi Glass Co Ltd | 耐ファウリング性陰イオン交換体 |
JP2008525612A (ja) * | 2004-12-28 | 2008-07-17 | アクゾ ノーベル エヌ.ブイ. | ポリマー分散体及びポリマー分散体の調製方法 |
JP2007265955A (ja) * | 2005-07-26 | 2007-10-11 | Canon Inc | 高分子電解質膜、その製造方法、高分子電解質、電解質組成物、膜電極接合体及び燃料電池 |
WO2008090774A1 (ja) * | 2007-01-23 | 2008-07-31 | Kuraray Co., Ltd. | 高分子電解質膜及びその製法、並びに膜-電極接合体及び固体高分子型燃料電池 |
Cited By (22)
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US20140200280A1 (en) * | 2009-03-25 | 2014-07-17 | Kuraray Co., Ltd. | Anion exchange membrane and method for producing same |
US8716358B2 (en) * | 2009-03-25 | 2014-05-06 | Kuraray Co., Ltd. | Anion exchange membrane and method for producing same |
US9321047B2 (en) | 2009-03-25 | 2016-04-26 | Kuraray Co., Ltd. | Anion exchange membrane and method for producing same |
US20120035280A1 (en) * | 2009-03-25 | 2012-02-09 | Kuraray Co., Ltd. | Anion exchange membrane and method for producing same |
JP2013095918A (ja) * | 2011-11-03 | 2013-05-20 | Samsung Electronics Co Ltd | イオン交換膜充電用組成物、イオン交換膜の製造方法、イオン交換膜及びレドックスフロー電池 |
JP2013149462A (ja) * | 2012-01-19 | 2013-08-01 | Kuraray Co Ltd | 膜−電極接合体 |
JP2014088514A (ja) * | 2012-10-31 | 2014-05-15 | Kuraray Co Ltd | 陰イオン交換膜及びその製造方法 |
WO2014103819A1 (ja) * | 2012-12-25 | 2014-07-03 | 株式会社クラレ | イオン交換膜およびその製造方法ならびに電気透析装置 |
US10125036B2 (en) | 2012-12-25 | 2018-11-13 | Kuraray Co., Ltd. | Ion exchange membrane, method for producing same, and electrodialyzer |
JPWO2014103819A1 (ja) * | 2012-12-25 | 2017-01-12 | 株式会社クラレ | イオン交換膜およびその製造方法ならびに電気透析装置 |
JP2014192074A (ja) * | 2013-03-28 | 2014-10-06 | Kuraray Co Ltd | 二次電池用高分子電解質ゲル組成物およびその製造方法 |
JP2015009162A (ja) * | 2013-06-26 | 2015-01-19 | 株式会社クラレ | イオン交換膜 |
JP2015020093A (ja) * | 2013-07-17 | 2015-02-02 | 株式会社クラレ | 一体型セル対、その製造方法および電気透析スタック |
WO2015030084A1 (ja) | 2013-08-30 | 2015-03-05 | 株式会社クラレ | 新規なビニルアルコール系共重合体、その製造方法およびイオン交換膜 |
JP2016536133A (ja) * | 2013-09-17 | 2016-11-24 | ゼネラル・エレクトリック・カンパニイ | イオン交換ポリマー及びイオン交換ポリマーの製造方法 |
US10576424B2 (en) | 2013-09-17 | 2020-03-03 | Bl Technologies, Inc. | Ion exchange polymers and a method for making ion exchange polymers |
JP2015067770A (ja) * | 2013-09-30 | 2015-04-13 | 株式会社クラレ | 陰イオン交換膜 |
JP2015168689A (ja) * | 2014-03-04 | 2015-09-28 | 株式会社クラレ | イオン交換膜 |
WO2016024453A1 (ja) * | 2014-08-14 | 2016-02-18 | 富士フイルム株式会社 | 硝酸イオン除去用高分子機能性膜及びその製造方法、分離膜モジュール、並びに、イオン交換装置 |
JPWO2016024453A1 (ja) * | 2014-08-14 | 2017-04-27 | 富士フイルム株式会社 | 硝酸イオン除去用高分子機能性膜及びその製造方法、分離膜モジュール、並びに、イオン交換装置 |
JP2016155110A (ja) * | 2015-02-25 | 2016-09-01 | 株式会社クラレ | 酸の回収方法 |
JP2018108583A (ja) * | 2018-02-09 | 2018-07-12 | ゼネラル・エレクトリック・カンパニイ | イオン交換ポリマー及びイオン交換ポリマーの製造方法 |
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US9321047B2 (en) | 2016-04-26 |
EP2412752A1 (en) | 2012-02-01 |
CN102449042A (zh) | 2012-05-09 |
TW201036693A (en) | 2010-10-16 |
US20120035280A1 (en) | 2012-02-09 |
TWI491438B (zh) | 2015-07-11 |
KR101716168B1 (ko) | 2017-03-14 |
JP5715558B2 (ja) | 2015-05-07 |
EP2412752A4 (en) | 2013-08-07 |
US20140200280A1 (en) | 2014-07-17 |
CN102449042B (zh) | 2015-09-16 |
US8716358B2 (en) | 2014-05-06 |
JPWO2010110333A1 (ja) | 2012-10-04 |
KR20120002595A (ko) | 2012-01-06 |
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