Formation of Polyethersulfone Film with Regular Microporous Structure by Water Vapor Induced Phase Separation

›› 2010, Vol. 18 ›› Issue (3): 529-532.

• • 上一篇

Formation of Polyethersulfone Film with Regular Microporous Structure by Water Vapor Induced Phase Separation

刘文芳, 赵之平, 孙蕾, 王明振

School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, China

收稿日期:2009-08-31 修回日期:2010-01-08 出版日期:2010-06-28 发布日期:2010-06-28
通讯作者: ZHAO Zhiping,E-mail:zhaozp@bit.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China(20676015,20806009);the Specialized Research Fund for the Doctoral Program of Higher Education of China(20070007055)

Formation of Polyethersulfone Film with Regular Microporous Structure by Water Vapor Induced Phase Separation

LIU Wenfang, ZHAO Zhiping, SUN Lei, WANG Mingzhen

School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, China

Received:2009-08-31 Revised:2010-01-08 Online:2010-06-28 Published:2010-06-28
Supported by:
Supported by the National Natural Science Foundation of China(20676015,20806009);the Specialized Research Fund for the Doctoral Program of Higher Education of China(20070007055)

摘要/Abstract

摘要： Polyethersulfone(PES)film with regular microporous structure was formed using dichloromethane as the solvent via water vapor induced phase separation(VIPS).The effects of solution concentration,atmospheric humidity and temperature,as well as molecular weight of PES on the surface morphology of the polymer film were investigated.The surface morphology characterized by SEM showed that the pore size reduced as the solution concentration increased.There was an optimum range of relative humidity for the formation of regular pore structure, which was from 60%to 90%at concentration of 20 g·L^-1 and 20℃.With the atmospheric temperature varied from 20 to 30℃,the pore became larger and the space between pores increased.The pore size in the PES film with low molecular weight was smaller than that with high molecular weight.

关键词: polyethersulfone, microporous film, formation, water vapor induced phase separation

Abstract: Polyethersulfone(PES)film with regular microporous structure was formed using dichloromethane as the solvent via water vapor induced phase separation(VIPS).The effects of solution concentration,atmospheric humidity and temperature,as well as molecular weight of PES on the surface morphology of the polymer film were investigated.The surface morphology characterized by SEM showed that the pore size reduced as the solution concentration increased.There was an optimum range of relative humidity for the formation of regular pore structure, which was from 60%to 90%at concentration of 20 g·L^-1 and 20℃.With the atmospheric temperature varied from 20 to 30℃,the pore became larger and the space between pores increased.The pore size in the PES film with low molecular weight was smaller than that with high molecular weight.

Key words: polyethersulfone, microporous film, formation, water vapor induced phase separation

刘文芳, 赵之平, 孙蕾, 王明振. Formation of Polyethersulfone Film with Regular Microporous Structure by Water Vapor Induced Phase Separation[J]. , 2010, 18(3): 529-532.

LIU Wenfang, ZHAO Zhiping, SUN Lei, WANG Mingzhen. Formation of Polyethersulfone Film with Regular Microporous Structure by Water Vapor Induced Phase Separation[J]. , 2010, 18(3): 529-532.

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Formation of Polyethersulfone Film with Regular Microporous Structure by Water Vapor Induced Phase Separation

Formation of Polyethersulfone Film with Regular Microporous Structure by Water Vapor Induced Phase Separation

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