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
收藏
页码：527 / 534
页数：8
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