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Reverse osmosis performance and chlorine resistance of new ternary aromatic copolyamides comprising 3,3′‐diaminodiphenylsulfone and a comonomer with a carboxyl group
Author(s) -
Konagaya Shigeji,
Tokai Masaya,
Kuzumoto Hideshi
Publication year - 2001
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 - 10.1002/1097-4628(20010425)80:4<505::aid-app1124>3.0.co;2-s
Subject(s) - comonomer , polymer chemistry , polyamide , aramid , interfacial polymerization , diamine , reverse osmosis , chemistry , chlorine , thin film composite membrane , membrane , materials science , organic chemistry , copolymer , monomer , polymer , biochemistry , fiber
The preparation of asymmetric flat membranes from a series of novel aromatic polyamides comprising 3,3′‐diaminodiphenylsulfone and a comonomer with a carboxyl group(&BOND;COOH) were studied and the measurements of reverse osmosis (RO) performance and chlorine resistance were carried out. It was confirmed that the introduction of comonomer with a carboxyl group (MC or T m ) to the aromatic polyamides (3I or 3T) comprising 3,3′‐diaminodiphenylsulfone was very effective for the improvement of its RO performance. In particular, 3T‐MC(30), which was prepared from terephthaloyl dichloride and mixed diamine components of 3,3′‐diaminodiphenylsulfone and 3,5‐diaminobenzoic acid, exhibited not only some potential for sea water desalination (FR = 159 L/m 2 day, Rj = 98.3%) but also higher chlorine resistance than conventional Nomex‐type aramid [MI‐MC(0)]. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 505–513, 2001