Abstract

A cation exchange membrane was prepared by the soaking technique. First, a base membrane was prepared by copolymerizing styrene and divinylbenzene in a poly(vinyl chloride) film and subsequently sulfonating it. The cation exchange membrane (Fe 3+ form) was then treated with an aqueous H 2O 2 solution to decompose the cation exchange resin component and was thereby transformed to a microporous membrane with no cation exchange capacity. Preparation conditions of the base membrane were studied as they relate to the characteristics of the resulting microporous membrane. Also, the suitability of the microporous membrane for ultrafiltration was studied using an aqueous solution of bovine hemoglobin.

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