Pervaporation dehydration of aqueous ethanol and isopropanol mixtures through alginate/chitosan two ply composite membranes supported by poly(vinylidene fluoride) porous membrane

被引：144

作者：

Huang, RYM ^{[1
]}

Pal, R ^{[1
]}

Moon, GY ^{[1
]}

机构：

[1] Univ Waterloo, Dept Chem Engn, Waterloo, ON N2L 3G1, Canada

来源：

JOURNAL OF MEMBRANE SCIENCE | 2000年 / 167卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

pervaporation; composite membrane; poly(vinylidene fluoride); alginic acid; chitosan; poly(methyl methacrylate); surface properties;

D O I：

10.1016/S0376-7388(99)00293-8

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Composite membranes consisting of an active alginate layer and supporting chitosan layer on top of the base porous blended polyvinylidene fluoride (PVDF) membrane were prepared and tested for pervaporation dehydration applications. Efforts to enhance the surface properties of PVDF by blending with relatively hydrophilic polymethyl methacrylate (PMMA) were carried out and evaluated by contact angle measurements. Various modifications for the alginate/chitosan composite membranes such as converting to the free acid form and cross-linking with cobalt ion;were investigated. They were then compared for the pervaporation dehydration of ethanol/water and isopropanol/water mixtures and the temperature effect on the permeation flux was also investigated. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：275 / 289

页数：15

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