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Preparation and characterization of SPES/PES blend UF membrane with small pore size

Authors： Zhan Qi-Wei1, Xu Zhen-Liang1*,Hu Deng1, Wei Yong-Ming1, Jiang Bang-He2

Units： 1State Key Laboratory of Chemical Engineering, Membrane Science and Engineering R&D Lab, Chemical Engineering Research Center, East China University of Science and Technology, Shanghai 200237, China.2 Huachang Polymers L.L.C, Shanghai 200237, China.

KeyWords： sulfonated polyethersulfone; polyethersulfone; UF membrane; nonsolvent induced phase separation method

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2014,34(2):28-31

Abstract：

Sulfonated polyethersulfone(SPES)/polyethersulfone(PES) blend UF membrane with small pore size was prepared by the nonsolvent induced phase separation(NIPS) method, and the properties were also tested. The effects of solvents, concentration of polymers and the ratio of SPES to PES on membrane performance were considered. The result showed that the solvent had a huge impact on the membrane performance. The membrane made by dimethylacetamide (DMAc) had a better performance on flux and rejection. With an increasing of the concentration of polymers the flux of water decreased while the rejection of PEG-10000 increased first and then tended to be stable. The molecular-weight cut-off (MWCO) was under 6000Da, and the membrane was negatively charged blend UF membrane with small pore size by measuring the rejections of different solutions. On the basis of Matlab calculation, the pore size and MWCO of blend UF membrane were 1.98nm and 3060Da, respectively.

Funds：

上海市科技攻关计划(11DZ1205201和1351102000)和江苏省科技工业支撑计划(BE2013031)

AuthorIntro：

占琦伟(1982 ~)，女，湖北襄阳人，硕士研究生，研究方向为纳滤膜制备与应用等。*通信联系人：许振良，E-mail: chemxuzl@ecust.edu.cn；电话：021-64253061；传真：021-64252989

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