文献类型：期刊文献

英文题名：A high performance silica-fluoropolyamide nanofiltration membrane prepared by interfacial polymerization

作者：Hu, Deng[1];Xu, Zhen-Liang[1];Wei, Yong-Ming[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Membrane Sci & Engn R&D Lab, Chem Engn Res Ctr, Shanghai 200237, Peoples R China

年份：2013

卷号：110

起止页码：31

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20131516196749);WOS:【SCI-EXPANDED(收录号:WOS:000319247400004)】；

基金：The authors thank for financial support by the Key Technology R&D Program of Shanghai Committee of Science and Technology in China (11DZ1205201).

语种：英文

外文关键词：Nanofiltration membrane; Interfacial polymerization; Silica sol; 2,2 '-Bis(1-hydroxyl-1-trifluoromethyl-2,2,2-trifluoroethyl)-4,4 '-Methylenedianiline

摘要：This paper aims to enhance the performance of thin-film composite (TFC) polyamide nanofiltration (NF) membrane prepared by interfacial polymerization of 2,2'-bis(1-hydroxyl-1-trifluoromethyl-2,2,2-trifluoroethyl)-4,4'-methylenedianiline (BHTTM) and trimesoyl chloride (TMC) on polyethersulfone (PES) supporting membrane. The active surface of the membrane was characterized by using SEM, EDS and AFM. The performance of NF membrane was optimized by studying the preparation conditions, including silica concentration, reaction time, monomers concentration, curing time and oxidation treatment. The results showed that the NF membrane prepared under the optimum condition exhibited Na2SO4 rejection of 85.0% and the water flux of 15.2 l m(-2) h(-1) under 0.6 MPa. The NF membrane was treated by 5000 ppm chlorine solution for I h. The salt rejection and water flux of the treated membrane reached to 94.0% and 105 l m(-2) h(-1) under 0.6 MPa. The rejection of the two NF membranes for inorganic electrolyte solutions decreased in the order of Na2SO4, MgSO4, MgCl2 and NaCl which were typical characteristics of negatively charged membranes. (C) 2013 Elsevier B.V. All rights reserved.