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Smart Self-Cleaning Membrane via the Blending of an Upper Critical Solution Temperature Diblock Copolymer with PVDF

文献类型： 外文期刊

作者： Jia, Xinying 1 ; Ji, Hailan 1 ; Zhang, Ganwei 1 ; Xing, Jiale 1 ; Shen, Shusu 1 ; Zhou, Xiaoji 1 ; Sun, Suling 2 ; Wu, Xu 3 ;

作者机构： 1.Suzhou Univ Sci & Technol, Sch Environm Sci & Engn, Jiangsu Prov Engn Res Ctr Separat & Purificat Mat, Suzhou 215009, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Agroprod Safety & Nutr, Hangzhou 310021, Peoples R China

3.Guangzhou Univ, Sch Chem & Chem Engn, Guangzhou 510006, Peoples R China

4.Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada

关键词： UCST; copolymers; blend PVDF membrane; thermoresponsive; smart self-cleaning

期刊名称：ACS APPLIED MATERIALS & INTERFACES （ 影响因子：9.229； 五年影响因子：9.57 ）

ISSN： 1944-8244

年卷期： 2021 年 13 卷 32 期

页码：

收录情况： SCI

摘要： Poly(2,2,2-trifluoroethyl methacrylate)-b-poly(imdazoled glycidyl methacrylate-co-diethylene glycol methyl ether methacrylate) (PTFEMA-b-P(iGMA-co-MEO(2)MA)) containing an upper critical solution temperature (UCST) polymer chain was prepared and blended with poly(vinylidene fluoride) (PVDF) to produce a thermoresponsive membrane with smart self-cleaning performance. The successful preparation of the membrane was demonstrated by attenuated total reflection- Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy characterization. The membrane shows UCST performance, and its flux changes with the filtrate temperature as the UCST polymer chain stretches out and contracts in response to various temperatures. In addition, the UCST polymer chain can disrupt the foulant and push it away from the membrane when the temperature is above the UCST and thus enables membranes to exhibit a smart self-cleaning behavior. To the best of our knowledge, this work is the first report of a smart self-cleaning membrane based on the blending of a diblock copolymer containing a UCST polymer chain with PVDF.

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