Preparation and Evaluation of Novel Ion-Exchange Membranes Prepared by Radiation-Induced Graft Polymerization.

概要

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Novel ion-exchange membranes were prepared by radiation-induced graft polymerization. The performances and membrane structure of the prepared membranes were studied to satisfy the needs of (1) an urea-permeable anion-exchange membrane for regeneration of dialysate in the peritoneal dialysis system, (2) a chelating porous membrane for effective removal of metal ion from the ultrapure water production system in the semiconductor industry, and (3) an ionexchange porous hollow-fiber membrane for high-speed separation and purification of protein in membrane chromatography system. By radiation-induced grafting, graft chains can be homogeneously immobilized on the nonporous polyethylene-based film and porous polyethylene-based hollow fiber in the membrane thickness direction. Then, quaternary ammonium salts, chelate-forming groups and tertiary amino groups were introduced on the graft chains. Novel functions of the prepared membranes which cannot be found in the styrene divinylbenzene-copolymer-based ion-exchange materials were observed.
日本イオン交換学会の論文