文献类型：期刊文献

英文题名：A chlorine-tolerant nanofiltration membrane prepared by the mixed diamine monomers of PIP and BHTTM

作者：Tang, Yong-Jian[1];Xu, Zhen-Liang[1];Xue, Shuang-Mei[1];Wei, Yong-Min[1];Yang, Hu[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：2016

卷号：498

起止页码：374

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20154401457608);WOS:【SCI-EXPANDED(收录号:WOS:000365109800037)】；

基金：The authors are thankful for the financial support received from 2013 Special Project of the Development and Industrialization of New Materials of National Development and Reform Commission in China (20132548), the National Science and Technology Support Project of China (2014BAB07B01), the Key Technology R&D Program of Shanghai Committee of Science and Technology in China (13521102000) and the Key Technology R&D Program of Jiangsu Committee of Science and Technology in China (3E2013031).

语种：英文

外文关键词：Polysulfone UF membrane; Interfacial polymerization; Nanofiltration; Mixed diamine monomers; Chlorine-tolerant

摘要：Using Polysulfone (PSF) ultrafiltration (UF) membrane as porous support, a chlorine-tolerant nanofiltration (NF) membrane was prepared by interfacial polymerization of piperazine (PIP) and 2,2'-bis(1hydroxyl-1 -trifluoromethyl-2,2,2-triflutoethyl)-4,4'-methylenedianiline (BHTTM) mixture with trimesoyl chloride (TMC). The XPS, SEM, AFM and contact angle methods were employed to characterize the physicochemical properties and morphology of the prepared NF membranes. The effects of preparation conditions such as reaction time, monomers mixing ratio and oxidation treatment on NF membrane performance were investigated. The salt rejection of the NF membrane met the order of Na2SO4 > MgSO4 > NaCl, indicating the membrane possessed a negative surface charge. The results showed the NF membrane prepared under the optimum conditions exhibited pure water flux (PWF) with 79.1 (L1m2 h) and Na2SO4 rejection of 99.5% under 0.6 MPa. The optimized post oxidation condition was treated by 3000 ppm NaCIO solution for 1 h. The best NF membrane had a molecular weight cut-off (MWCO) less than 300 Da, corresponding to the pore size of 1 nm, which was calculated from the rejection of carbohydrates. The robustness of the NF membrane was proven by showing satisfactory stability in the long time running. (C) 2015 Elsevier By. All rights reserved.