Transport Behavior of Electrolytes Through Charged Mosaic Composite Membranes
作者:
Koji Ishizu,
Masaya Iwade,
期刊:
Polymer-Plastics Technology and Engineering
(Taylor Available online 1995)
卷期:
Volume 34,
issue 6
页码: 891-915
ISSN:0360-2559
年代: 1995
DOI:10.1080/03602559508012183
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The first part of this article reviews the strong acid/strong base type charged mosaic composite membrane. A template pattern with alternating poly(4-vinylpvridine) (P4VP)/poly(vinyl alcohol) (PVA) lamellae was fabricated upon a microporous membrane by casting of poly[4-vinylpyridine (4VP)-g-vinyl alcohol (VA)] graft copolymer from a water/l-propanol mixture. After a treatment involving the binding of the microporous membrane with the graft copolymer and also domain fixing of the PVA phases, a dilute solution of poly[sodiump-styrenesulfonate (SSS)-g-VA] graft co-polymer/P4VP binary blend was cast on this template surface. After chemical treatments (introduction of a positive charge and domain fixing of ion-exchange regions), we examined the transport of KCl and selective transport of a KCl-sucrose mixture through the charged mosaic composite membrane. The second section reviews the weak acid strong base type charged mosaic composite membrane. In this type, the charged mosaic regions were composed of poly(acrylic acid) (PAA) and quaternized P4VP microdomains. The microstructure of binary blend was observed from scanning electron microscopy (SEM) by wet-etching of films after domain fixing of one component of the binary blend. We examined the transport of KCl and L-phenylalanine through the charged mosaic composite membranes.
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