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Preparation and characterization of hyperthin-skinned and high performances asymmetric polyethersulfone membrane for gas separation

Ismail, Ahmad Fauzi and Wan Abdul Rahman, Wan Aizan and R., Norida and T., Matsuura and S. A., Hashemifard (2010) Preparation and characterization of hyperthin-skinned and high performances asymmetric polyethersulfone membrane for gas separation. Desalination, 273 (1). pp. 93-104. ISSN 0011-9164

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Official URL: http://dx.doi.org/10.1016/j.desal.2010.10.015

Abstract

Defect-free highperformancemembranes for O2/N2separation were prepared by coating the porous polyethersulphone (PES) membrane of hyperthin-skin layer with silicone rubber. The combined effects of fabrication parameters in dry/wet phase inversion process and of the casting dope rheology enabled improved of membraneperformance in O2 and N2separation, i.e. the optimum range was found to be from 149 to 447 s- 1 and 10 to 14 s, respectively, for the shear rate and the evaporation time to prepare the hyperthin-skinnedasymmetricpolyethersulfonemembranes. The optimum polymer concentration was 32 wt.% , 61 wt.% and 7 wt.% for PES, 1-methyl-2-pyrrolidone and water respectively. The thinnest skin layer thickness was 538 ± 95.6 Å. Evaporation time and casting shear have been identified as the dominant fabrication parameters in controlling skin layer thickness and skin integrity.

Item Type:Article
Uncontrolled Keywords:asymmetricmembrane, gasseparation, phase inversion, rheology, polyethersulfone
Subjects:Q Science > QD Chemistry
Divisions:Petroleum and Renewable Energy Engineering
ID Code:26618
Deposited By: Liza Porijo
Deposited On:18 Jul 2012 03:36
Last Modified:25 Aug 2014 01:40

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