Bioinspired fabrication of high performance composite membranes with ultrathin defect-free skin layer
Date
2009
Authors
Pan, F.
Jia, H.
Qiao, S.
Jiang, Z.
Wang, J.
Wang, B.
Zhong, Y.
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Advisors
Journal Title
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Volume Title
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Journal article
Citation
Journal of Membrane Science, 2009; 341(1-2):279-285
Statement of Responsibility
Fusheng Pan, Huiping Jia, Shinzhang Qiao, Zhongyi Jiang, Jingtao Wang, Baoyi Wang and Yurong Zhong
Conference Name
Abstract
Inspired by the bioadhesion principle, composite membranes with ultrathin, defect-free skin layer (about 10-90 nm) were fabricated by simply dipping the porous hollow fiber support layer into an aqueous alkaline dopamine solution. The thickness and compactness of the skin layer were conveniently tuned by varying dipping conditions (dopamine concentration, soaking time, and pH values). The as-prepared membranes displayed strong interfacial binding strength, well-defined free volume characteristics, and consequently superior dehumidification performance. The dehumidification experiments using water vapor/propylene as model showed that the water permeance and separation factor were 9316.7 GPU and infinite for the composite membranes fabricated at the dopamine concentration 2 mg ml<sup>-1</sup> and the pH 9.4. © 2009 Elsevier B.V. All rights reserved.
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Dissertation Note
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Copyright © 2009 Elsevier B.V. All rights reserved.