Method for making cross-linkable zwitterionic polymer membranes and their use

Abstract

Disclosed is a method of making a thin film composite membrane, the method comprising: providing a copolymer comprising (i) a plurality of zwitterionic repeat units, and (ii) a plurality of hydrophobic repeat units; wherein each hydrophobic repeat unit comprises an alkene; providing a plurality of crosslinking units; wherein each crosslinking unit comprises a first terminal thiol moiety and a second terminal thiol moiety; providing an initiator; providing a solvent; admixing the copolymer, the plurality of crosslinking units, the initiator, and the solvent, thereby forming a mixture; coating the mixture onto a support membrane; evaporating the solvent, activating the initiator, thereby forming the thin film composite membrane comprising a crosslinked zwitterionic copolymer, wherein a mass ratio of the copolymer:the initiator:the plurality of crosslinking units is about 10:1:1 to about 200:1:1.

Dependencies are inferred from the claim text.