Chitosan hydrogel membranes for pervaporative dehydration of alcohols

被引：31

作者：

Zielinska, Katarzyna ^{[1
]}

Kujawski, Wojciech ^{[1
]}

Chostenko, Alexander G. ^{[1
]}

机构：

[1] Nicholas Copernicus Univ, Fac Chem, PL-87100 Torun, Poland

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2011年 / 83卷

关键词：

Pervaporation; Dehydration; Chitosan membranes; Glutaraldehyde; CROSS-LINKING; GLUTARALDEHYDE; ISOPROPANOL; PERMEATION;

D O I：

10.1016/j.seppur.2011.09.023

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In the present study chitosan was crosslinked with glutaraldehyde. Crosslinked (CHI-GL) and non-crosslinked chitosan (CHI) membranes were prepared by solvent evaporation method. FT-IR, AFM and TG/DTG were used to characterize the physicochemical properties of membranes. It was found that crosslinking of the CHI membranes with glutaraldehyde did not influence the surface morphology and thermal stability of membranes. Effect of alcohols (methanol, ethanol, 2-propanol) in aqueous alcohol/water mixtures on the swelling behavior and dehydration by pervaporation were examined. It was found that both membranes possessed hydrophilic properties in contact with alcohol/water mixture. The results demonstrated also that crosslinked chitosan membranes showed a higher permeation flux but a lower selectivity in contact with alcohol/water mixtures. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：114 / 120

页数：7

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