Membrane Science and Technology

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BPPO hollow fiber ion exchange mosaic membranes: Membrane preparation and protein adsorption properties

Authors： Cuiming Wu 1,*, Fujian Sun1, Na Wang 2, Tongwen Xu2

Units： 1 School of Chemical Engineering, Hefei University of Technology, Hefei 230009;

KeyWords： BPPO; 3-mercaptopropyltriethoxysilane; quaternization; ion exchange mosaic membranes; BSA

ClassificationCode：O63，TB33

year,volume(issue):pagination： 2014, 34(1):67-73

Abstract：

Quaternized BPPO hollow fiber membrane was used as the starting material and modified by sol-gel and oxidization reactions of 3-mercaptopropyltriethoxysilane (KH580), so that ion exchange mosaic hybrid membranes containing -N+(C2H5)3 and -SO3H groups were obtained. The anion and cation exchange capacities (AEC and CEC) were 1.57-1.76mmol/g and 1.07-1.24mmol/g respectively. The structure and physico-chemical properties of the membranes were characterized and then the membranes were applied for protein adsorption and desorption performances. The results showed that the swelling resistance of the ion exchange mosaic membranes was improved as compared with the base membrane. The adsorption capacities for bovine serum albumin (BSA) at pH= 4, 7 and 8 were relatively higher and could reach more than 20mg/g. The desorption capacity under alkaline conditions (pH=8) was obviously higher than the BPPO base membranes and could reach around 95%. The results indicate that the BPPO-based ion exchange mosaic membranes can be potentially used as adsorption materials.

Funds：

国家自然科学基金项目(No. 21176053, 51003100)；安徽省自然科学基金（No. 11040606M37）

AuthorIntro：

吴翠明（1978－），女，副教授，电话.: +86-551-290-1458. E-mail: cmwu@ustc.edu.cn

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