Dehydration of acetic acid by pervaporation through an asymmetric polycarbonate membrane

被引：20

作者：

Huang, J

Tu, ML

Wang, YC

Li, CL

Lee, KR ^{[1
]}

Lai, JY

机构：

[1] Nanya Inst Technol, Dept Chem Engn, Chungli 32034, Taiwan

[2] Natl Chung Yuan Univ, Dept Chem, Membrane Res Lab, Chungli 32023, Taiwan

来源：

EUROPEAN POLYMER JOURNAL | 2001年 / 37卷 / 03期

关键词：

asymmetric polycarbonate membrane; coagulation media; liquid-liquid demixing; pervaporation;

D O I：

10.1016/S0014-3057(00)00135-X

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Dehydration of acetic acid by pervaporation through an asymmetric polycarbonate membrane was investigated. Investigations focused on the effects of feed composition, degree of swelling, and the molar volume of non-solvent additive on the pervaporation performances. The membrane formation systems are discussed in terms of the presence of a nonsolvent in the casting solution, the kinds of coagulation media, and the polymer concentration. The rate of liquid-liquid demixing decreases with increasing alcohol molar Volume of the coagulation medium. The durability of the asymmetric polycarbonate membranes with n-hexanol additive was tested for 3 wt.% aqueous acetic acid solution at 25 degreesC for two months and it was found to be stable. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：527 / 534

页数：8

共 13 条

[11] Diffusion of acetic acid and water through poly(vinylalcohol) membranes. Coupling effects [J].