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Sulfonation of cross‐linked asymmetric membranes based on polystyrene and divinylbenzene
Author(s) -
Byun H. S.,
Burford R. P.,
Fane A. G.
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070520612
Subject(s) - membrane , divinylbenzene , polystyrene , sulfonic acid , microporous material , polymer chemistry , chemical engineering , salt (chemistry) , wetting , contact angle , materials science , chemistry , copolymer , organic chemistry , polymer , styrene , biochemistry , engineering
Asymmetric microporous membranes based on polystyrene cross‐linked with divinyl benzene were prepared. They were sulfonated with sulfonic acid and washed with solutions of gradually increasing pH to reduce environmental shock. The sulfonation was monitored by infrared spectroscopy, and changes in wettability and sulfur content were also recorded. Morphologies and reverse osmosis performance of sulfonated membranes were measured, with both water flux and salt rejection increasing after treatment. © 1994 John Wiley & Sons, Inc.