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Preparation and characterization of modified polyethersulfone hollow fiber membranes by blending poly (styrene-alt-maleic anhydride)

Authors :
Shudong Sun
Wenyue Cao
Huijuan Li
Changsheng Zhao
Lulu Li
Tao Xiang
Min Tang
Yeqiu Liu
Source :
Desalination. 295:26-34
Publication Year :
2012
Publisher :
Elsevier BV, 2012.

Abstract

In this study, pH-sensitive polyethersulfone (PES) hollow fiber membrane was prepared by blending a copolymer of poly (styrene- alt -maleic anhydride) (PSMA). The PSMA alternating copolymer was synthesized by a traditional synthetic route, and was characterized by Fourier transform infrared spectroscopy (FTIR) analysis, nuclear magnetic resonance ( 1 H NMR) and gel permeation chromatography technique (GPC). The PES/PSMA membrane was then transformed to carboxylic PES/PSMA-H carboxylic membrane using sodium hydroxide solution, by which the anhydride groups were transformed to carboxyl groups, and the modified membranes showed excellent pH-sensitivity and pH-reversibility. Furthermore, the alternating copolymer modified PES hollow fiber membranes showed evident hysteresis of water flux, for which it would take several hours to reach the equilibrium state.

Details

ISSN :
00119164
Volume :
295
Database :
OpenAIRE
Journal :
Desalination
Accession number :
edsair.doi...........6d6f7a4f8a660d5c184d878f2ba0f484