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1625812 
Journal Article 
Crosslinked organic-inorganic hybrid chitosan membranes for pervaporation dehydration of isopropanol-water mixtures with a long-term stability 
Liu, YL; Su, YH; Lee, KR; Lai, JY 
2005 
Yes 
Journal of Membrane Science
ISSN: 0376-7388 
251 
1-2 
233-238 
WOS:000228305400025 
Crosslinked organic-inorganic hybrid chitosan membranes
were obtained from blending chitosan and gamma-(glycidyloxypropyl)trimethoxy-silane (GPTMS) in
acetic acid aqueous Solution. The hydrophilicity of the modified membranes was not significantly
decreased, so as to result in good permselectivity and high permeation flux in pervaporative
dehydration on a 70 wt.% isopropanol-water (IPA-H2O) solution. A flux of 1730 g/(m(2) h) and a
separation factor of 694 were found with the chitosan membrane containing 5 wt.% GPTMS. Both of
the crosslinked and organic-inorganic hybrid structures contribute to stabilize the membranes to
maintain the performance of the membranes in a 140 days long-term operation. (c) 2004 Elsevier
B.V. All rights reserved. 
chitosan; pervaporation; crosslinked membrane; isopropanol-water separation