Cation exchange membrane has selectivity improved, its process of preparation and its uses.

摘要

The present invention relates to a cation exchange membrane consisting of a polymeric matrix, on the surface of which is grafted at least one group of formula - r1 - (ch2) m - nr2r3 and / or at least one molecule having at least one group of formula - r1 - (ch2) m - nr2r3 in which r1 represents an aryl group; m is 0, 1, 2 or 3; r2 and r3, which are identical or different, represent a hydrogen or an alkyl group. The present invention relates to a process for the preparation of such a membrane and its uses.