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《Journal of Donghua University》 2006-04
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Synthesis and Preparation of Polysulfone Hollow Fiber Chelating Membrane Modified with Thiourea

WANG Bing~ 1, 2 , HUANG Lei~ 1 , XIAO Feng~ 1 1 Key Laboratory of Hollow Fiber Membrane Material and Membrane Process, Ministry of Education, Tianjin Polytechnic University, Tianjin 300160 2 School of Materials Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160  
Several kinds of chloromethyl polysulfones (CMPF) with different chlorinity and reactive groups were synthesized by Friedel-crafts reaction, which could be utilized as reactively matrix membrane materials. The CMPF hollow matrix membranes were prepared with phase inversion by utilization of CMPF/additive/DMAC casting solution and CMPF as membrane materials. It was found that the effects of additive content, bore liquid and dry spinning distance on the structure of CMPF hollow fiber matrix membrane were different. A high qualified polysulfone hollow fiber chelating membrane modified with thiourea as chelating groups was prepared using CMPF as membrane matrix materials, through the reaction between thiourea and CMPF hollow fiber matrix membrane to afford the methyl iso-thiourium polysulfone. The experimental results showed that thermal drawing could increase the mechanical properties of matrix membrane, and the thermal treatment could increase the homogeneity and stability of the structure of polysulfone hollow fiber chelating membrane modified with thiourea.
【Fund】: Supported by the Natural Science Foundation of Tianjin (No.05YFJ MJC04200)
【CateGory Index】: TQ342
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