A Study on the Preparation of Ion-Exchange Membranes with Polyphosphazenes

포스파젠 고분자를 이용한 이온교환 분리막 제조에 관한 연구

  • 권석기 (홍익대학교 과학기술대학 공업화학과) ;
  • 이병철 (홍익대학교 과학기술대학 공업화학과)
  • Received : 1998.02.23
  • Accepted : 1998.03.13
  • Published : 1998.06.10

Abstract

A new series of ion separation membrane materials based on pheonoxy and trifluoroethoxy co-substituted polyphosphazene has been designed and synthesized. The polymers were characterized by $^{31}P$ NMR, FT-IR spectroscopy, elemental analysis, and get permeation chromatography. The basic phosphazene membranes were sulfonated to obtain better hydrophilicity and ion-selectivity. The membrane from $[NP(OC_6H_4SO_3H)_{1.58}(OCH_2CF_3)_{0.42}]_n$ gave excellent values of ion transport number, area resistivity, and also ion exchange capacity, compared with the commercial membranes.

Keywords

Acknowledgement

Supported by : 교육부

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