Membrane Science and Technology

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Morphology control and application of polysulfone membranes prepared by co-casting of PEI/PSf

Authors： WANG Zhouwei 1, JI Yu1, Sui Bo2，ZHANG Yunyan1, YIN Yong1,LI Xuemei1,HE Tao1*

Units： 1State-Key Lab of Material Oriented Chemical Engineering, College of Chemistry and Chemical Engineering,

KeyWords： polysulfone; co-casting; microfiltration membrane

ClassificationCode：TQ050.4+25; TQ028.8

year,volume(issue):pagination： 2011, 31(2):39-45

Abstract：

The polymer concentration, PVPK-90 concentration, coagulant temperature and coating thickness were investigated for preparation of polysulfone microfiltration membranes via co-casting. Results indicated that increase of PSf concentration can effectively prevent the formation of concave structure in PSf surface with decrease in water permeability, pore size and porosity. Increasing PVP concentration significantly decreased the surface porosity. At higher coagulant temperature and with a thicker PEI coating, PSf membranes showed higher permeability and larger pore size. Theses results open up a new way in tailor making high flux MF membranes with a wide range of pore size.

Funds：

国家重大基础研究973项目(No.2009CB623402), 材料化学工程国家重点实验室基金(No.38901120), 自然科学基金(No.20976083)

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