FREEZING AND NONFREEZING WATER IN CHARGED MEMBRANES

被引：33

作者：

TASAKA, M

SUZUKI, S

OGAWA, Y

KAMAYA, M

机构：

[1] SCI UNIV TOKYO,DEPT CHEM,SHINJUKU KU,TOKYO 162,JAPAN

[2] ASAHI CHEM IND CO LTD,ION EXCHANGE MEMBRANE ADM,DEPT TECHNOL & DEV,KAWASAKI KU,KAWASAKI 210,JAPAN

来源：

JOURNAL OF MEMBRANE SCIENCE | 1988年 / 38卷 / 02期

关键词：

CALORIMETRY; -; WATER; Freezing;

D O I：

10.1016/S0376-7388(00)80878-9

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Freezing and nonfreezing water contents in perfluorosulfonated membranes and sulfonated hydrocarbon membranes were estimated using differential scanning calorimetry. In the sulfonated hydrocarbon membranes the amount of freezing water decreased with the increase of divinylbenzene content and with the decrease of water content. When the molalities of fixed charges in sulfonated hydrocarbon membranes and perfluorosulfonated membranes were similar to each other, the free water content in the perfluorosulfonated membranes was larger than that in the sulfonated hydrocarbon membranes. The number of moles of nonfreezing water per mole of fixed charges in the perfluorosulfonated membranes was smaller than that in the sulfonated hydrocarbon membranes.

引用

页码：175 / 183

页数：9

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