Abstract
AbstractCharged 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.
Published Version
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