METHOD FOR PRODUCING AN INTEGRAL-ASYMMETRIC HOLLOW-FIBRE POLYMER MEMBRANE CONSISTING OF AN AMPHIPHILIC BLOCK COPOLYMER, THE HOLLOW-FIBRE MEMBRANE OBTAINED AND THE USE THEREOF

摘要

The invention relates to a method using a dry/wet spinning method for producing a self-supporting integral-asymmetric hollow-fibre polymer membrane (16) having an isoporous outer skin, a porous inner skin and a sponge-like inner structure. The invention further relates to an integral-asymmetric hollow-fibre polymer membrane (16), a filtration module and a use. The method according to the invention comprises the following method steps: production of a polymer solution having at least one solvent, in which at least one amphiphilic block copolymer having at least two different polymer blocks is dissolved; pressing the polymer solution through a spinneret (2) formed as a hollow-core nozzle or multiple hollow-core nozzle to form a hollow fibre (12), in the centre of which a liquid column is spun, which consists of a precipitant having reduced precipitation activity; and after passing through a precipitation section (13) in an atmosphere, immersing the spun hollow-fibre (12) in a precipitation bath (14) to form the hollow-fibre polymer membrane (16).