Crosslinked organic–inorganic hybrid chitosan membranes for pervaporation dehydration of isopropanol–water mixtures with a long-term stability
DOI: 10.1016/j.memsci.2004.12.003
Title: Crosslinked organic–inorganic hybrid chitosan membranes for pervaporation dehydration of isopropanol–water mixtures with a long-term stability
Journal Title: Journal of Membrane Science
Volume: 251
Publication Date: 1 April 2005
Start Page: 233
End Page: 238
Published online: online 13 January 2005
ISSN: 0376-7388
Author: Ying-Ling Liuab, Yu-Huei Suab, Kuir-Rain Leebc, Juin-Yih Laiab
Affiliations:

  • a Department of Chemical Engineering, Chung Yuan University, #200, Chung-Pei Road, Chungli, Taoyuan 320, Taiwan

  • b R&D Center for Membrane Technology, Chung Yuan University, #200, Chung-Pei Road, Chungli, Taoyuan 320, Taiwan

  • c Department of Chemical Engineering, Nanya Institute of Technology, Chungli, Taoyuan 320, Taiwan
  • Abstract: Crosslinked organic–inorganic hybrid chitosan membranes were obtained from blending chitosan and γ-(glycidyloxypropyl)trimethoxysilane (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/(m2 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.
    Received: 30 August 2004
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