STRUCTURE AND PROPERTIES OF HYDROCARBON IONOMER MEMBRANES .1. POLY(METHYL METHACRYLATE-CO-METHACRYLIC ACID)

被引：33

作者：

GRONOWSKI, AA

JIANG, M

YEAGER, HL

WU, G

EISENBERG, A

机构：

[1] UNIV CALGARY,DEPT CHEM,CALGARY T2N 1N4,AB,CANADA

[2] MCGILL UNIV,DEPT CHEM,MONTREAL H3A 2K6,PQ,CANADA

来源：

JOURNAL OF MEMBRANE SCIENCE | 1993年 / 82卷 / 1-2期

关键词：

DIFFUSION; ION EXCHANGE MEMBRANES; WATER SORPTION AND DIFFUSION; IONIC PERCOLATION;

D O I：

10.1016/0376-7388(93)85095-E

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A series of poly(methyl methacrylate-co-methacrylic acid) polymer membranes with increasing ionic content were prepared and evaluated. DMTA measurements reveal that dry Cs+ samples are not phase separated up to 10 mol% of ionic comonomer. In aqueous solution, a sharp insulator-conductor transition is observed at about 6.5 mol% of ionic comonomer, which is accompanied by the appearance of strongly hydrogen bonded water in the membrane. Three distinct types of sorbed water were detected, and two of these appear to be involved in the ionic conduction pathways. Diffusion coefficients for simple ions are large, but smaller than those for perfluorinated ionomers with similar ionic contents.

引用

页码：83 / 97

页数：15

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