文献类型：期刊文献

英文题名：PVDF-TiO₂ Composite Hollow Fiber Ultrafiltration Membranes Prepared by TiO₂ Sol-Gel Method and Blending Method

作者：Yu, Li-Yun[1,2];Shen, Hong-Mei[2];Xu, Zhen-Liang[1,2]

机构：[1]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]ECUST, Membrane Sci & Engn R&D Lab, Chem Engn Res Ctr, Shanghai 200237, Peoples R China

年份：2009

卷号：113

期号：3

起止页码：1763

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000266891100049)】；

语种：英文

外文关键词：polyvinylidene fluoride; titanium dioxide; sol-gel method; blending method; hollow fiber UF membrane

摘要：Organic-inorganic polyvinylidene fluoride (PVDF)-titanium dioxide (TiO2) composite hollow fiber ultrafiltration (UF) membranes were prepared by TiO2 Sol-gel method and blending method, respectively. The membranes were characterized in terms of microstructure, hydrophilicity, permeation performance, thermal stability, and mechardcal strength. The experimental results indicated that PVDF-TiO2 composite UF membranes exhibited significant differences in surface properties and intrinsic properties because of the addition of inorganic particles. The TiO2 particles improved the membrane strength and thermal stability of PVDF-TiO2 composite UF membranes. In particular, hydrophilicity and permeability increased dramatically with the increase of TiO2, whereas the retention property of UF membranes was nearly unchanged. However, high TiO2 concentration induced the aggregation of particles, resulting in the decline of hydrophilicity and permeability. Compared with PVDF-TiO2 composite hollow fiber UF membranes prepared by TiO2 blending method, PVDF-TiO2 composite hollow fiber UF membranes prepared by TiO2 sol-gel method formed a dispersed inorganic network, and the stronger interaction between inorganic network and polymeric chains led to TiO2 particles being uniformly dispersed in UF membranes. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 113:1763-1772,2009