文献类型：期刊文献

英文题名：Novel polyamide thin-film composite nanofiltration membrane modified with poly(amidoamine) and SiO2 gel

作者：Tang, Yong-Jian[1];Xu, Zhen-Liang[1];Huang, Ben-Qing[1];Wei, Yong-Ming[1];Yang, Hu[1]

机构：[1]E China Univ Sci & Technol, Membrane Sci & Engn R&D Lab, Chem Engn Res Ctr, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2016

卷号：6

期号：51

起止页码：45585

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20162202449434);WOS:【SCI-EXPANDED(收录号:WOS:000376120100074)】；

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 (GX1301), the National Science and Technology Support Project of China (2014BAB07B01 and 2015BAB09B01), project of National Energy Administration of China (2011-1635 and 2013-117) and the Key Technology R&D Program of Jiangsu Committee of Science and Technology in China (BE2013031).

语种：英文

外文关键词：Nanofiltration membranes - Solutions - Film preparation - Nanofiltration - Sodium sulfate

摘要：Recently, poly(amidoamine) (PAMAM) has emerged as a novel material due to its high density of functional groups, hyper-branched structure and hydrophilic nature. PAMAM has been used as a monomer during an interfacial polymerization process for the fabrication of nanofiltration membranes. Previous work has focused on the low generation of PAMAM (G0, G1 and G2), however, the high generation of PAMAM (G4 and G5) still lacks investigation. This work focuses on the preparation of nanofiltration membranes, which are made of PAMAM-NH2 G4 and PAMAM-NH2 G5. By optimizing the concentration of PIP and SiO2 gel in the aqueous solution, the pure water flux improved by 106% while separation properties are kept at the same level. XPS, EDS, SEM, AFM and contact angle were used to characterize the NF membrane properties. The PAMAM/PIP/SiO2 membrane prepared under the optimum conditions exhibited a pure water flux of 38.5 L m(-2) h(-1) and Na2SO4 rejection of 92.0% under 0.6 MPa. The PAMAM/PIP/SiO2 membrane's robust long-time running performance showed its good potential in practical applications.