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Permeation behavior of dextrans by charged ultrafiltration membranes of polyacrylonitrile photografted with ionic monomers
Author(s) -
Kobayashi Takaomi,
Kumagai Kazuyasu,
Nosaka Yoshio,
Miyama Hajime,
Fujii Nobuyuki,
Tanzawa Hiroshi
Publication year - 1991
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.1991.070430602
Subject(s) - polyacrylonitrile , permeation , membrane , ultrafiltration (renal) , polymer chemistry , polymer , monomer , aqueous solution , copolymer , chemical engineering , materials science , vinyl alcohol , polyelectrolyte , chemistry , chromatography , organic chemistry , composite material , biochemistry , engineering
Charged copolymers, polyacrylonitrile, having grafts of quaternized poly(N,N‐dimethylaminoethylmethacrylate) and poly(sodium p‐styrenesulfonate), were synthesized by photograft‐polymerization. The charged ultrafiltration membranes, which had heterogeneous porous structures, were prepared by casting graft polymer solution containing poly(vinyl alcohol) into water. The permeation of nonionic dextran and anionic dextransulfate through the charged membranes was studied by ultrafiltration in aqueous solution. The molecular weight cutoff characteristics of the charged membrances were obtained using dextrans of various molecular sizes. The permeation behavior was discussed in terms of the charge effect of the graft polymers and electrostatic interaction between the polymers and the solute molecules.