阅读说明：本技术 采用在聚合物原液溶液中的共溶剂的膜制造 (Membrane fabrication using co-solvents in polymer dope solution ) 是由 O.格隆沃尔德 M.韦伯 M.海宁 于 2018-08-10 设计创作，主要内容包括：本发明涉及一种用于制造膜M的方法,所述方法包括以下步骤：提供原液溶液D,所述原液溶液包含选自聚亚苯基砜或聚亚苯基砜与非离子聚亚芳基醚的混合物的聚合物P,选自非质子极性溶剂的第一溶剂,以及选自C<Sub>2</Sub>-C<Sub>8</Sub>链烷二醇、C<Sub>3</Sub>-C<Sub>R</Sub>链烷三醇、聚乙二醇、或其混合物的共溶剂；以及通过使所述原液溶液D与凝结剂接触制备所述膜。本发明进一步涉及一种在所述方法中可获得的膜M。(The invention relates to a method for producing a membrane M, comprising the following steps: providing a stock solution D comprising a polymer P selected from polyphenylene sulfones or mixtures of polyphenylene sulfones with non-ionic poly (arylene ether) selected from non-ionic poly (arylene ether)A first solvent which is a protic polar solvent, and C 2 ‑C 8 Alkanediol, C 3 ‑C R A co-solvent of an alkanetriol, polyethylene glycol, or a mixture thereof; and preparing the membrane by contacting the stock solution D with a coagulant. The invention further relates to a membrane M obtainable in said process.)

1. A method for manufacturing a non-ionic membrane M, the method comprising the steps of:

providing a stock solution D comprising

A polymer P selected from polyphenylene sulfone or a mixture of polyphenylene sulfone and a non-ionic poly (arylene ether),

-a first solvent selected from aprotic polar solvents, and

-is selected from C₂-C₈Alkanediol, C₃-C₈A co-solvent of an alkanetriol, polyethylene glycol, or a mixture thereof; and

the membrane is prepared by contacting the stock solution D with a coagulant.

2. The process according to claim 1, wherein the weight ratio of the first solvent to the co-solvent is from 30: 1 to 1: 2, preferably from 10: 1 to 1: 1, and in particular from 8: 1 to 5: 1.

3. The process according to claim 1 or 2, wherein the stock solution D comprises from 1 to 30 wt%, preferably from 2 to 20 wt%, and in particular from 5 to 15 wt% of the co-solvent.

4. The process according to any one of claims 1 to 3, wherein the stock solution D comprises at least 35 wt%, preferably at least 45 wt%, and in particular at least 55 wt% of the first solvent.

5. The process of any one of claims 1 to 4, wherein the first solvent is selected from a high boiling point ether, ester, ketone, asymmetric halogenated hydrocarbon, anisole, dimethylformamide, dimethyl sulfoxide, sulfolane, N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, or mixtures thereof.

6. The process according to any one of claims 1 to 5, wherein the first solvent is selected from N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, or a mixture thereof.

7. The process according to any one of claims 1 to 6, wherein the co-solvent is selected from C₂-C₄Alkanediol, C₃-C₄Alkanetriols, polyethylene glycols having a molar mass of from 100 to 1000g/mol, or mixtures thereof.

8. The process according to any one of claims 1 to 7, wherein the co-solvent is selected from 1, 2-propanediol, 1, 3-propanediol, glycerol, polyethylene glycol having a molar mass of 300 to 600g/mol, or mixtures thereof.

9. The process according to any one of claims 1 to 8, wherein the polymer P is selected from polyphenylenesulfones and mixtures of polyphenylenesulfones with polyethersulfones or polysulfones.

10. The process according to any one of claims 1 to 9, wherein the polymer P is selected from polyphenylene sulfones.

11. The process according to any one of claims 1 to 10, wherein the polymer P comprises at least 60 wt%, preferably at least 80 wt%, and in particular at least 95 wt% of the polyphenylene sulfone.

12. The method of any one of claims 1 to 11, wherein the at least one coagulant comprises water.

13. The process according to any one of claims 1 to 12, further comprising the step of adding to the stock solution D a solution S comprising a copolymer C in a solvent L, wherein the copolymer C comprises at least one block of a poly (arylene ether) a and a block of a poly (alkylene oxide) PAO, wherein the content of poly (alkylene oxide) PAO in copolymer C is 30 to 90 wt.%.

14. A non-ionic membrane M obtainable in the process according to any one of claims 1 to 13.

15. Use of the non-ionic membrane M obtainable in the process according to any one of claims 1 to 13 for filtering aqueous liquids through said membrane.