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Hydrophilic modification of iPP/PMMA
microporous membranes via thermally induced phaseseparation

Authors： WANG Fang1,2, WANG Juan1,2,3, ZHAO Yajing1,2, CHENG Lan1,2, LI Pingli1,2

Units： 1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China 2. Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300350, China 3.Weihai Expand Fiber Co.Ltd, Weihai 264200, China 4.Hebei Xu Yang Coal Carbonization Co.Ltd 073000, China

KeyWords： Hydrophilic membrane; thermally induced phase separation; isotacticpolypropylene(iPP); polymethylmethacrylate(PMMA)

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2018,38(3):68-74

Abstract：

The hydrophilic character of isotactic polypropylene(iPP) hollow fiber membrane was improved by blendinghydrophilic polymer polymethylmethacrylate(PMMA) via thermally induced phase separation. Hydrophilicity of iPPmembraneswas optimized by variation of PMMA concentration in iPP/PMMA/DBP/DOP blend system using dibutyl phthalate (DBP) and dioctyl phthalate (DOP) as mixed diluent. The compositions, structural morphorlogy and hydrophilicity were characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscope and contact angle measuring meter. The experimental results showed that the hydrophilicity and water flux of the blended membranes were enhanced siginificantly due to the addition of PMMA; the contact angle decreased to 67°from 125°and the water flux increased to 1256 L/ (m2 h) with 10% of PMMA added, improving by 167% compared to neat iPP membrane.

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AuthorIntro：

王芳（1991- ）, 女, 湖北襄阳人, 硕士生, 主要研究聚丙烯膜的制备及改性, E-mail：hbwf77@163.com * 通讯作者, E-mail: lipingli@tju.edu.cn

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