COMPOSITE ANION EXCHANGE MEMBRANE, METHOD FOR PRODUCING SAME, ION EXCHANGE MEMBRANE MODULE, AND ION EXCHANGER

摘要

Provided are: a composite anion exchange membrane which has excellent monovalent ion selectivity; a method for producing this composite anion exchange membrane; and an ion exchange membrane module and an ion exchanger, each of which uses this composite anion exchange membrane. This composite anion exchange membrane comprises a surface layer having anionic functional groups on one surface or both surfaces of an anion exchange membrane that serves as a base. The density of the anionic functional groups in the surface layer is from 3.0 equivalent/g to 10.0 equivalent/g.