Electrochemical properties of polyethylene membrane modified with carboxylic acid group

被引：47

作者：

Choi, SH

Park, SY

Nho, YC

机构：

[1] Korea Atom Energy Res Inst, RI Radiat Appl Team, Taejon 305600, South Korea

[2] Kyungpook Natl Univ, Taegu 702701, South Korea

来源：

RADIATION PHYSICS AND CHEMISTRY | 2000年 / 57卷 / 02期

关键词：

cation-exchange membrane; radiation-induced grafting; acrylic acid; methacrylic acid; electrochemical properties; electrical resistance; transport number;

D O I：

10.1016/S0969-806X(99)00347-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two cation-exchange membranes modified with the carboxylic acid group for battery separator were prepared by radiation-induced grafting of acrylic acid (AA) and methacrylic acid (MA) onto a polyethylene (PE) film. The surface area, thickness, volume, water uptake, ion-exchange capacity, specific electric resistance, and electrolyte flux were evaluated after PE film was grafted with AA and MA. It was found that KOH diffusion flux of AA-grafted PE membrane and MA-grafted PE membrane increased with an increase in the degree of grafting. AA-grafted PE membrane had a higher diffusion flux than MA-grafted PE membrane. Electrical resistance of two cation-exchange membranes modified with AA and MA decreased rapidly with an increase in the degree of grafting. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：179 / 186

页数：8

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