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Fabrication and ultrafiltration performance of SiO2/PAN hybrid membranes modified by APTES

Authors： LIU Qiao，LI Lin*，WANG Chunlei，JIN Xin，XU Ruisong，WANG Tonghua*

Units： (State Key Laboratory of Fine Chemicals, R＆D Center of Membrane Science, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China)

KeyWords： polyacrylonitrile; hybrid membranes; SiO2; APTES; in situ fabrication

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2017,37(2):1-5

Abstract：

The SiO2/PAN hybrid membranes were fabricated in situ by the method of non-solvent induced phase separation (NIPS) with polyacrylonitrile (PAN) as the matrix, N,N-dimethylacetamide (DMAc) as the solvent, tetraethoxysilane (TEOS) as the inorganic precursor and 3-aminopropyltriethoxysilane (APTES) as the additive. The effects of APTES on the micromorphology, chemical structure, hydrophilic property and filtration performance of SiO2/PAN hybrid membranes were investigated by the SEM, FT-IR, contact angle measurement and ultrafiltration performance test. The results indicated that the –NH2 groups were grafted on the surface of SiO2 due to the modification of APTES, which promoted dispersion of SiO2 in the PAN matrix. Therefore, the hybrid membranes not only have a thinner surface layer and the vertical finger-like holes, but also improved the hydrophilic property and anti-fouling performance of the membranes. (T/A12)/PAN with APTES content of 12% exhibited the lowest contact angle and the pure water flux of 260.43 L/m2•h with the BSA rejection as high as 99%.

Funds：

国家自然科学基金资助项目（21276035，21376037，21436009，21576035，21506020，21676044）；中央高校基本科研业务费资助项目（DUT16RC(4)05），中国博士后科学基金资助项目（2014M561232）

AuthorIntro：

作者简介：刘峤（1987-），男，安徽淮南，博士研究生，从事分离膜材料的研究及应用。E-mail：peakliu0525@163.com

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