Premium
Modified polysulfone membranes. III. Pervaporation separation of benzene–cyclohexane mixtures through carboxylated polysulfone membranes*
Author(s) -
Yoshikawa Masakazu,
Tsubouchi Keisuke,
Guiver Michael D.,
Robertson Gilles P.
Publication year - 1999
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/(sici)1097-4628(19991010)74:2<407::aid-app23>3.0.co;2-3
Subject(s) - polysulfone , pervaporation , membrane , cyclohexane , benzene , polymer chemistry , permeation , solubility , selectivity , chemistry , chemical engineering , materials science , organic chemistry , catalysis , biochemistry , engineering
Membranes prepared from carboxylated polysulfone permeated benzene preferentially from benzene–cyclohexane mixtures by pervaporation. Hydrophilic polysulfones containing carboxyl groups with degrees of substitution (DS) ranging from 0.46 to 1.90 groups per repeating unit were selected for this study. The membrane having a carboxyl group DS of 0.88 showed the best trade‐off between flux and permselectivity. The permselectivity towards benzene was 234 at the weight fraction of benzene in feed of 0.1. From pervaporation and sorption experiments, it was evident that permselectivity toward benzene was due to solubility selectivity. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 407–412, 1999