Membrane Science and Technology

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Preparation of Hydrophobic Nano-silica Modified PDMS/PET Composite Membrane and Its Pervaporation for Dilute Ethanol-Water Solution

Authors： WANG Guang-fang, SUN De, WANG Liang, LI Ran

Units： College of Chemical engineering, Changchun University of Technology, Changchun 130012, Jilin China

KeyWords： PDMS; silica; modified membrane; separation factor

ClassificationCode：TQ TQ028.8

year,volume(issue):pagination： 2011, 31(6):41-45

Abstract：

The current PDMS/PET composite membranes were prepared by filling polydimethylsiloxane (PDMS) membrane with fumed hydrophobic nano-silica on PET membrane. The physical morphology, tensile strength and thermal resistant performance of the as-prepared composite membranes were investigated by SEM, WSM-5KN and TGA. And further the effects of feed temperature, feed concentration on the pervaporation performance of ethanol/water solutions were also examined. It was shown from the results that the thermal resistant performance of the modified membrane was significantly improved and its tensile-strength was increased from 1.5Mpa to 7.4MPa compared with pure PDMS. Otherwise the peak value of the membrane separation factor seemed to constantly appear in advance.

Funds：

吉林省教育厅自然科学基金[2008]105

AuthorIntro：

王光芳（1985—），女，山东潍坊人，研究生，主要从事硅橡胶材料的研究。E-mail: kuailexiaobianzi@163.com *联系人：孙德，高级实验师。

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