COMPOSITE SEMIPERMEABLE MEMBRANE, COMPOSITE SEMIPERMEABLE MEMBRANE ELEMENT, AND METHOD FOR MANUFACTURING COMPOSITE SEMIPERMEABLE MEMBRANE

摘要

A composite semipermeable membrane obtained by forming a polyamide separation function layer on a microporous support membrane comprising a base material and a porous support body, wherein the standard deviation of the membrane thickness of the separation function layer is equal to or less than 2.00 nm. A high-performance composite semipermeable membrane having high water permeability and a high chemical resistance is provided.