Effect of organic solvents on membrane formation by phase separation with supercritical CO2

被引：89

作者：

Matsuyama, H ^{[1
]}

Yamamoto, A

Yano, H

Maki, T

Teramoto, M

Mishima, K

Matsuyama, K

机构：

[1] Kyoto Inst Technol, Dept Chem & Mat Technol, Sakyo Ku, Kyoto 6068585, Japan

[2] Fukuoka Univ, Dept Chem Engn, Jyonan Ku, Fukuoka 8140180, Japan

来源：

JOURNAL OF MEMBRANE SCIENCE | 2002年 / 204卷 / 1-2期

关键词：

supercritical CO2; phase separation; microporous membrane; cellulose acetate; effect of solvent;

D O I：

10.1016/S0376-7388(02)00018-2

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Porous cellulose acetate membranes were prepared by phase separation with supercritical CO2 as a non-solvent. Four kinds of organic solvents were used and the effect of the solvent on the membrane structure was investigated. As the mutual affinity between solvent and supercritical CO2 decreased, the membrane porosity and the average pore size near the center position increased. In all cases, macrovoid was not formed, although the phase separation occurred instantaneously after CO2 was introduced. The membrane performances such as solute rejection coefficient and water permeability A ere measured for the obtained porous membrane. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：81 / 87

页数：7

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