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The Study on Water Permeation Improvement of Disulfonated Poly(Arylene Ether Sulfone) Random Copolymers with High Free Volume  

Kang, Seungkyu (Dept. Transportation Engineering, Keimyung University)
Hwang, Kyungho (Department of Chemical System Engineering, Keimyung University, Korea Filtration Technologies Co., Ltd.)
Publication Information
Membrane Journal / v.22, no.5, 2012 , pp. 352-358 More about this Journal
Abstract
In this study, we found structure-property relationship for pressure retarded osmosis (PRO) membrane, between BPS-XX and BisA-XX having similar structure but different free volume. And this comparison was subdivided by controlling its sulfonation degree. BPS-XX and BisA-XX were prepared via a polycondensation reaction. The degree of sulfonation were 20 to 60 mol.%. And they were fabricated to membrane. Characteristics were analyzed to verify of free volume. And the results showed that increase of free volume normally lead to increase permeability and decrease selectivity in equivalent molecule structure. Finally, in the permeability-selectivity results, we conclude high permeability and selectivity membrane can be prepared by controlling molecular structure and free volume.
Keywords
PRO membrane; structure-property; water permeability; free volume;
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