STUDY OF A NEW PERVAPORATION MEMBRANE .1. PREPARATION AND CHARACTERISTICS OF THE NEW MEMBRANE

被引：44

作者：

WU, LG ^{[1
]}

ZHU, CL ^{[1
]}

LIU, M ^{[1
]}

机构：

[1] ZHEJIANG UNIV,DEPT CHEM ENGN,HANGZHOU 310027,PEOPLES R CHINA

来源：

JOURNAL OF MEMBRANE SCIENCE | 1994年 / 90卷 / 03期

关键词：

BLENDED MEMBRANES; PREPARATION; PERVAPORATION MEMBRANES;

D O I：

10.1016/0376-7388(94)80071-5

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A new alcohol dehydration membrane, poly(vinyl alcohol)-chitosan blended composite membrane (PVA-CS) has been prepared. This membrane has high selectivity and promising permeability, especially in separating ethanol-water near the azeotropic region (J(t) > 200 g/m2 h, alpha(w/e) > 500, 70-degrees-C). The separating characteristics, which vary with feed composition, operating temperature and the surface structure of the membrane, are determined and the results agree well with the theoretical predictions. The characteristics of mechanical strength, stability and resistance to water were also determined. The results show that they are considerably enhanced by blending and crosslinking, in comparison with PVA composite membranes.

引用

页码：199 / 205

页数：7