文献类型：期刊文献

英文题名：In-situ modification of PVC UF membrane by SiO2 sol in the coagulation bath during NIPS process

作者：Cheng, Liang[1];Xu, Zhen-Liang[1];Yang, Hu[1];Wei, Yong-Min[1]

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

年份：2018

卷号：9

期号：5

起止页码：317

外文期刊名：MEMBRANE AND WATER TREATMENT

收录：;EI(收录号：20184205946640);WOS:【SCI-EXPANDED(收录号:WOS:000446101500004)】；

基金：The authors acknowledge the financial support received from the National Science and Technology Support Project of China (2014BAB07B01 and 2015BAB09B01), the Consulting Program of the Chinese Academy of Engineering (2017-XZ-08-04-02) and ECUST Innovation Research Training Plan (X12025).

语种：英文

外文关键词：polyvinyl chloride; surface modification; silica sol; ultrafiltration membrane

摘要：Polyvinyl chloride (PVC) ultrafiltration (UF) membrane was modified by silica sol in the coagulation bath during non-solvent induced phase separation (NIPS) process. The effects of silica sol concentrations on the morphology, surface property, mechanical strength and separation property of PVC UF membranes were systematically investigated. PVC membranes were characterized by Fourier transform infrared spectroscopy (FTIR), energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), contact angle goniometry and tensile strength measurement. The results showed that silica had been successfully assembled on the surface of PVC UF membrane. With the increase of silica sol concentration in the coagulation bath, the morphologies of PVC UF membranes changed from cavity structure to finger-like pore structure and asymmetric cross-section structure. The hydrophilicity and permeability of PVC UF membranes were further evaluated. When silica sol concentration was 20 wt.%, the modified PVC membrane exhibited the highest hydrophilicity with a static contact angle of 36.5 degrees and permeability of 91.8 (L(.)m(-2) -h(-1)). The structure of self-assemble silica had significant impact on the surface property, morphology, mechanical strength and resultant separation performance of the PVC membranes.