WO1993022040A1 - Membrane de separation constituee d'un complexe polyionique - Google Patents
Membrane de separation constituee d'un complexe polyionique Download PDFInfo
- Publication number
- WO1993022040A1 WO1993022040A1 PCT/JP1992/001547 JP9201547W WO9322040A1 WO 1993022040 A1 WO1993022040 A1 WO 1993022040A1 JP 9201547 W JP9201547 W JP 9201547W WO 9322040 A1 WO9322040 A1 WO 9322040A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- membrane
- separation membrane
- polymer
- polyion complex
- separation
- 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
Links
Classifications
-
- 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
- B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
- B01D71/62—Polycondensates having nitrogen-containing heterocyclic rings in the main chain
-
- 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
- B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
- B01D71/80—Block polymers
Definitions
- the present invention relates to a water permselective membrane having a wide range of uses.
- the water permselective membrane according to the present invention is useful as a permselective membrane used in a pervaporation method or a vapor permeation method. Further, by utilizing the hydrophilicity of the membrane, it can be used in a reverse osmosis method or for dehumidifying air. Used for
- Reverse osmosis has been put to practical use for concentrating low-concentration aqueous solutions of organic substances using membranes.
- the reverse osmosis method is not applicable to a high-concentration aqueous solution having a high osmotic pressure because a pressure higher than the osmotic pressure of the separation liquid (ie, the liquid to be treated) must be applied to the separation membrane. That is, the reverse osmosis method has a limit in the applicable concentration of the solution.
- the permeation and vapor permeation methods which are separation methods that are not affected by osmotic pressure, have been spotlighted as new separation methods.
- the separation liquid is supplied to the primary side of the membrane, and the secondary side (permeate side) of the membrane is depressurized, or the carrier gas is passed through the secondary side of the membrane to separate the substance to be separated.
- the supply to the primary side of the membrane is a mixed vapor.
- Membrane permeable substances can be collected by cooling and condensing permeated vapor.
- examples of membranes having excellent separation performance include membranes using a polysaccharide or polysaccharide derivative.
- this film when this film is used, there are inevitable problems in natural polymer compounds such as depolymerization by acid or alkali and decomposition by bacteria, and therefore, durability, chemical resistance and the like of this film cannot be expected.
- Examples of a membrane having both excellent permeation rate and separation coefficient include a polyion complex separation membrane using a polymer having a carboxyl group such as polyacrylic acid (for example, US Pat. No. 4,871, See No. 461).
- this separation membrane is difficult to use at high temperatures. For example, when a 99 wt% ethanol aqueous solution is used as the feed liquid (liquid to be treated), the separation coefficient tends to decrease when used at a high temperature of 70 ° C. or higher to increase the permeation rate.
- An object of the present invention is to provide a membrane having a stable separation coefficient and a stable permeation rate even when the temperature of the feed liquid is high (for example, 70 or more).
- the permeation rate in the present invention refers to the permeation amount per unit area and per unit time of an object to be treated (supplied liquid or supplied vapor), and is expressed in units of kg Zm 2 ⁇ hr.
- the separation coefficient ( ⁇ ) is determined by the ratio of water to organic matter in the feed liquid or feed steam ⁇ (XZY) f ⁇ It is the value of the ratio of ⁇ (X / Y) p ⁇ to the organic matter.
- ⁇ ⁇ ⁇ (X / Y) p / (X / Y) f .
- X and Y represent the respective compositions (weight fractions) of water and organic substances in the binary system
- P and P represent the permeate side (secondary side of the membrane) and the supply side (membrane, respectively). Primary side).
- the present inventors have intensively studied to solve the above-mentioned disadvantages of the conventionally known membrane.
- a polyion complex composed of an ionic combination of an anionic polymer having a carboxyl group and a cationic polymer having a divalent piperidine ring as a membrane material, excellent heat can be obtained. It has been found that a stable separation membrane can be obtained.
- the present invention relates to a film structure in which at least a part of at least a part of the primary surface is composed of an anionic polymer having a hydroxyl group and a cationic polymer having a divalent piperidine ring.
- a separation membrane made of a polyion complex which is characterized by comprising a zwitterionic conjugate.
- the present invention is characterized in that at least the surface of the membrane structure is composed of an ionic conjugate of an anionic polymer having a carboxyl group and a cationic polymer having a divalent piperidine ring. And a separation membrane made of polyion complex.
- the cationic polymer having a divalent piperidin ring is preferably a cationic polymer having a divalent piperidinium base represented by the following general formula (I) or (II).
- ⁇ ⁇ Represents a hydrogen atom or a linear or branched, saturated or unsaturated aliphatic hydrocarbon group, provided that at least one of the hydrogen atoms is a hydroxyl group, a halogen atom or an aromatic group.
- R 1 and R 2 are each preferably a hydrogen atom, an alkyl group or a hydroalkyl group.
- the present invention also provides the use of the separation membrane made of poly. Ion complex as a separation membrane of a water-Z organic compound mixture used in a pervaporation method or a vapor permeation method.
- a water / organic mixture is supplied to a primary side of the polyion complex separation membrane, and the secondary side of the separation membrane is depressurized. It provides a method for separating a water / organic mixture in which a carrier gas is passed through the secondary side of a water / organic mixture. -Hereinafter, the present invention will be described in detail.
- Preferred examples of the cationic polymer having a divalent piperidine ring used in the production of the separation membrane according to the present invention include a divalent piperidinium base represented by the general formula (I) or (II). It is a cationic polymer having.
- R 1 and R 2 in the general formula (I) or (II) are each a hydrogen atom or a linear or branched, saturated or unsaturated aliphatic hydrocarbon group (however, At least one of them may be substituted with a hydroxyl group, a halogen atom or an aromatic hydrocarbon group.
- the hydrocarbon group examples include a hydrocarbon group excluding a substituent portion (in the case where at least one hydrogen atom of the aliphatic hydrocarbon group is substituted with an aromatic hydrocarbon group, an aromatic hydrocarbon group Those having 1 to 6 carbon atoms are preferable, and those having 1 to 3 carbon atoms are more preferable. In addition, those with direct chains are preferred over those with branched chains.
- the saturated or unsaturated aliphatic hydrocarbon group includes an alkyl group, a alkenyl group and an alkynyl group, preferably an alkyl group and an alkynyl group, and more preferably an alkyl group. When the aliphatic hydrocarbon group has a substituent, the substituent is generally a hydroxyl group, a chlorine atom, or a phenyl group.
- X— is a halogen-pair ion, and among the halogen-pair ions, a chlorine atom and a bromine atom are preferable, and a chlorine atom is more preferable.
- the general formula (I) or (II) is a halogen-pair ion, and among the halogen-pair ions, a chlorine atom and a bromine atom are preferable, and a chlorine atom is more preferable.
- N in (II) is 4 to 5, 0000, preferably 9 to 2, 000, more preferably 15 to 444.
- a cationic polymer having a divalent piperidinium base represented by the following general formula (I ⁇ I) may be used as the cationic polymer having a divalent piperidine ring. Good.
- R 1 and R 2 each represent hydrogen, an alkyl group or a hydroalkyl group
- X- represents a halogen counter ion
- ⁇ 4 to 50,000.
- the cationic polymer represented by the general formula (III) includes those having no sulfone bond in the repeating unit.
- the cationic polymer having a divalent pyridinium base is as follows:
- Examples of the cationic polymer having a divalent piberidine ring other than those represented by the above general formulas (I), (II) and (III) include, for example, poly (5-N— (2-tri) Methylammonium chloride) acetylbiberyl diene-3-methylene sulfone), poly (5-N— (2-pyridinium chloride) acetilbiberyl diene-3-methylene sulfone) and poly (5—N— (2— Rubazolinium chloride) acetylbiberylidene-3-methylene sulfone).
- Such a cationic polymer having a divalent piperidine ring may be a commercially available product or a product synthesized separately. Any substance that forms a polyion complex with an anionic polymer can be used. The present invention can be used freely.
- anionic polymer having a carboxyl group examples include anionic polymers and copolymers containing acrylic acid, methacrylic acid and the like as constituent monomers. Further, a partial hydrolyzate of an acrylonitrile-based polymer is also included in the category of the anionic polymer having a lipoxyl group. That is, examples of a means for introducing a carboxyl group into a polymer include a method of (co) polymerizing acrylic acid and a method of partially hydrolyzing an acrylonitrile-based polymer.
- a membrane material containing an anionic polymer having a carboxyl group is generally used.
- the methods for producing such a membrane material include: (1) a method of (co) polymerizing acrylic acid as a polymer; only a polymer obtained by partially hydrolyzing an acrylonitrile-based polymer; (2) using a material containing only acrylonitrile-based polymer (polymer alone or polymer composition) as a polymer (3) A film using a blend of an acrylic acid-based polymer and another polymer or a composition containing other components as well. (4) A film is manufactured using a polymer other than the acrylic acid-based polymer, and then the acrylic acid-based polymer (coating agent) is applied to the film.
- the cationic polymer and the anionic polymer are polyion-complexed.
- these polyion-complexation is performed by using a membrane material containing an anionic polymer. It is easily achieved simply by contacting the cationic polymer solution. At this time, it is preferable to form a strong polyion complex from the viewpoint of improving the performance of the separation membrane and the stability of the separation membrane. Therefore, a cationic polymer usually has four or more repeating units. Those having a low molecular weight are not preferred because the crosslinking effect is weak.
- the polyion complex only needs to be formed at least partially on the surface of the separation membrane, and may not be formed over the entire membrane.
- a dense layer located on the surface of the membrane and a support layer following it, usually a porous support layer make at least part of the dense layer a polyion complex. It should just be done. If the dense layer is polyion complex, good separation performance will be exhibited.
- the thickness of the dense layer is too large, it is not preferable because the permeation speed of the object to be processed becomes low.
- a separation membrane having a dense layer having a thickness of 2 / zm or less is used, and one having a thickness of 1 m or less is more preferable.
- Polyion complexation improves the hydrophilicity of the separation membrane by ionizing carboxyl groups, and forms a membrane by ionic bonding. This is effective for improving the stability of the condition.
- the membrane form of the separation membrane of the present invention may be any of a flat membrane, a hollow fiber membrane, a tube membrane and the like, and can be arbitrarily determined according to the application.
- a high-concentration aqueous solution of an organic substance when a high-concentration aqueous solution of an organic substance was separated using a conventional separation membrane, the permeation rate was extremely low due to the small water pressure on the primary side of the membrane.
- a membrane When a membrane is used, a high-concentration aqueous solution of an organic substance can be concentrated at a high temperature of 70 ° C or more, so that the water BE on the primary side of the membrane can be easily increased, thereby increasing the permeation rate. Can be added.
- a hollow fiber membrane having an inner diameter of 0.5 mm and an outer diameter of 0.8 mm was obtained.
- a large number of pores having a pore diameter of about 0.3 Hi were opened.
- the inner surface had pores with a pore diameter of several hundred angstroms (several tens of nanometers).
- This membrane was immersed in an aqueous solution of 0.42 N—NaOH for 58 minutes to hydrolyze part of the membrane, and then excess alkali in the membrane was washed with water to obtain a membrane material.
- AS—A—120 L average molecular weight: about 100,000, repeating unit (n): about 440 was polyion-complexed.
- PAS-A-5 (average molecular weight) manufactured by Nitto Boseki Co., Ltd. having the same structure and different molecular weight as those used in Example 1 was used.
- a module was manufactured in the same manner as in Example 1 except that the use of about 3,500 and the repeating unit (n): about 15) were used.
- the water permeation rate was evaluated over a month by pervaporation method (99% aqueous ethanol solution was supplied into the hollow fiber at 70 ° C at 70 ° C and the outside of the hollow fiber was decompressed). Is about 7.0 g / m 2 ⁇ hr. The separation coefficient is above 1,0003 ⁇ 4, and it was confirmed that both were stable.
- Example 2 The same as Example 1 except that an ionene-type polymer PCA-107 (average molecular weight: about 20,000, repeating unit (n): about 120) having the following structure was used as the cationic polymer. Then, a module was prepared.
- PCA-107 average molecular weight: about 20,000, repeating unit (n): about 120
- Example 2 the durability was evaluated by the pervaporation method at 70 ° C in the same manner as in Example 1. As a result, immediately after the start of the measurement, a high separation coefficient of 2,000 or more was shown. On the 15th day from the start of the measurement, the separation coefficient decreased to 800.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/157,029 US5393432A (en) | 1992-04-23 | 1992-11-26 | Separating membrane of polyion complex |
| EP92924015A EP0609446B1 (en) | 1992-04-23 | 1992-11-26 | Separating membrane made from polyion complex |
| BR9206314A BR9206314A (pt) | 1992-04-23 | 1992-11-26 | Membrana de separação de um complexo poliiônico uso da mesma e processo para a separação de uma mistura de água e uma substância orgânica |
| DE69229795T DE69229795T2 (de) | 1992-04-23 | 1992-11-26 | Polyionkomplex-membran |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4129397A JPH0691949B2 (ja) | 1992-04-23 | 1992-04-23 | ポリイオンコンプレックス製分離膜 |
| JP4/129397 | 1992-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1993022040A1 true WO1993022040A1 (fr) | 1993-11-11 |
Family
ID=15008560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1992/001547 Ceased WO1993022040A1 (fr) | 1992-04-23 | 1992-11-26 | Membrane de separation constituee d'un complexe polyionique |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5393432A (ja) |
| EP (1) | EP0609446B1 (ja) |
| JP (1) | JPH0691949B2 (ja) |
| BR (1) | BR9206314A (ja) |
| DE (1) | DE69229795T2 (ja) |
| WO (1) | WO1993022040A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999010090A1 (en) * | 1997-08-25 | 1999-03-04 | Korea Research Institute Of Chemical Technology | Polyion complex separation membrane with a double structure |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19817374A1 (de) * | 1998-04-18 | 1999-10-21 | Univ Stuttgart Lehrstuhl Und I | Engineering-Ionomerblends und Engineering-Ionomermembranen |
| DE19909841A1 (de) * | 1999-03-06 | 2000-09-07 | Inst Polymerforschung Dresden | Mehrschichtmembranen und Verfahren zu ihrer Herstellung |
| US20050045554A1 (en) * | 2003-08-28 | 2005-03-03 | Gambro Lundia Ab | Membrane unit element, semipermeable membrane, filtration device, and processes for manufacturing the same |
| US20080026374A1 (en) * | 2006-07-31 | 2008-01-31 | Sigma Aldrich Co. | Compositions and Methods for Isolation of Biological Molecules |
| US20080023395A1 (en) * | 2006-07-31 | 2008-01-31 | Sigma Aldrich Co. | Compositions and Methods for Isolation of Biological Molecules |
| US20080026375A1 (en) * | 2006-07-31 | 2008-01-31 | Sigma Aldrich Co. | Compositions and Methods for Isolation of Biological Molecules |
| US20080109557A1 (en) * | 2006-11-02 | 2008-05-08 | Vinay Joshi | Method and system for reducing switching delays between digital video feeds using personalized unicast transmission techniques |
| JP4774520B2 (ja) * | 2007-02-02 | 2011-09-14 | 国立大学法人山口大学 | イオンバリヤー膜および該イオンバリヤー膜を使用した分離装置 |
| JP7153561B2 (ja) * | 2016-03-28 | 2022-10-14 | ユニバーシティー オブ デラウェア | ヒドロキシド交換膜およびヒドロキシド交換アイオノマーとしての使用のためのポリ(アリールピペリジニウム)ポリマー |
| US11512156B2 (en) * | 2017-09-28 | 2022-11-29 | University Of Delaware | Poly(aryl piperidinium) polymers including those with stable cationic pendant groups for use as anion exchange membranes and ionomers |
| EP3946939B1 (en) | 2019-03-28 | 2025-07-09 | University of Delaware | Polymers having stable cationic pendant groups for use as anion exchange membranes |
| CN121843753A (zh) * | 2023-08-30 | 2026-04-10 | 陶氏环球技术有限责任公司 | 用于分离氢气和含碳化合物的方法 |
| CN121752350A (zh) * | 2023-08-30 | 2026-03-27 | 陶氏环球技术有限责任公司 | 用于分离氢气和含碳化合物的方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63182005A (ja) * | 1987-01-22 | 1988-07-27 | Agency Of Ind Science & Technol | ポリイオンコンプレツクス分離膜 |
| JPS63214304A (ja) * | 1987-03-04 | 1988-09-07 | Agency Of Ind Science & Technol | ポリイオンコンプレツクス含有膜の製造方法 |
| JPS6411611A (en) * | 1987-07-03 | 1989-01-17 | Agency Ind Science Techn | Polyacrylic acid polyioncomplex membrane |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4119590A (en) * | 1975-05-22 | 1978-10-10 | Toyo Soda Manufacturing Co., Ltd. | Process for producing a polyion complex having a nucleic acid base |
| JPS54151570A (en) * | 1978-05-22 | 1979-11-28 | Teijin Ltd | Selectively permeable composite membrane and its manufacture |
| CH660852A5 (de) * | 1982-11-23 | 1987-05-29 | Aligena Ag | Dynamische membranen, die sich als duenne polymerschichten auf poroesen, polymeren traegermaterialien befinden. |
| US4927540A (en) * | 1986-09-04 | 1990-05-22 | The Dow Chemical Company | Ionic complex for enhancing performance of water treatment membranes |
| US4871461A (en) * | 1987-01-22 | 1989-10-03 | The General Director Of The Agency Of Industrial Science And Technology | Polymer composite membrane |
| US5032282A (en) * | 1989-04-14 | 1991-07-16 | Aligena Ag | Solvent-stable semipermeable composite membranes |
| US4992176A (en) * | 1989-10-23 | 1991-02-12 | Texaco Inc. | Dehydration of organic oxygenates |
-
1992
- 1992-04-23 JP JP4129397A patent/JPH0691949B2/ja not_active Expired - Lifetime
- 1992-11-26 WO PCT/JP1992/001547 patent/WO1993022040A1/ja not_active Ceased
- 1992-11-26 DE DE69229795T patent/DE69229795T2/de not_active Expired - Fee Related
- 1992-11-26 EP EP92924015A patent/EP0609446B1/en not_active Expired - Lifetime
- 1992-11-26 BR BR9206314A patent/BR9206314A/pt not_active IP Right Cessation
- 1992-11-26 US US08/157,029 patent/US5393432A/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63182005A (ja) * | 1987-01-22 | 1988-07-27 | Agency Of Ind Science & Technol | ポリイオンコンプレツクス分離膜 |
| JPS63214304A (ja) * | 1987-03-04 | 1988-09-07 | Agency Of Ind Science & Technol | ポリイオンコンプレツクス含有膜の製造方法 |
| JPS6411611A (en) * | 1987-07-03 | 1989-01-17 | Agency Ind Science Techn | Polyacrylic acid polyioncomplex membrane |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP0609446A4 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999010090A1 (en) * | 1997-08-25 | 1999-03-04 | Korea Research Institute Of Chemical Technology | Polyion complex separation membrane with a double structure |
| US6325218B1 (en) | 1997-08-25 | 2001-12-04 | Korea Research Institute Of Chemical Technology | Polyion complex separation membrane with a double structure |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0609446B1 (en) | 1999-08-11 |
| BR9206314A (pt) | 1995-11-07 |
| US5393432A (en) | 1995-02-28 |
| EP0609446A1 (en) | 1994-08-10 |
| DE69229795T2 (de) | 1999-12-02 |
| JPH0691949B2 (ja) | 1994-11-16 |
| JPH05301035A (ja) | 1993-11-16 |
| DE69229795D1 (de) | 1999-09-16 |
| EP0609446A4 (en) | 1995-02-15 |
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