文献类型：期刊文献

英文题名：Preparation and characterization of PES/CA microporous membranes via reverse thermally induced phase separation process

作者：Liu, Sheng-Hui[1];Xu, Zhen-Liang[1,2];Liu, Min[2];Wei, Yong-Ming[1];Guo, Feng[2]

机构：[1]East China Univ Sci & Technol, Membrane Sci & Engn R&D Lab, Chem Engn Res Ctr, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]ECUST, Minist Educ, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat,Key Lab Ultrafin, Shanghai 200237, Peoples R China

年份：2018

卷号：58

期号：2

起止页码：180

外文期刊名：POLYMER ENGINEERING AND SCIENCE

收录：;EI(收录号：20171503570079);WOS:【SCI-EXPANDED(收录号:WOS:000424843000007)】；

基金：Contract grant sponsor: National Natural Science Foundation of China; contract grant number: 21306044; contract grant sponsor: China Postdoctoral Science Foundation; contract grant number: 2015M571507; contract grant sponsor: National Science and Technology Support Project of China; contract grant numbers: 2014BABOTB01 and 2015BAB09B01; contract grant sponsor: Project of National Energy Administration of China; contract grant numbers: 2011-1635 and 2013-117.

语种：英文

外文关键词：Coagulation - Contact angle - Membranes - Microporosity - Phase separation

摘要：The blend polyethersulfone (PES)/cellulose acetate (CA) flat-sheet microporous membranes were prepared by reverse thermally induced phase separation (RTIPS) process. The effects of CA content and coagulation bath temperature on membrane structures and properties were investigated in terms of membrane morphology, water contact angle, permeation performance, and mechanical properties. The cloud point results indicated that the cloud point decreased with the increasing content of CA. When the coagulation bath temperature was lower than the cloud point, the membrane formation process underwent nonsolvent induced phase separation (NIPS) process and dense skin layer and finger-like structure were formed in membranes. These membranes had lower pure water flux and poor mechanical properties. But when the coagulation bath temperature was higher than the cloud point, the membrane formation process underwent RTIPS process. The porous top surface as well as porous cross-section of the membranes were formed. Therefore, high pure water flux and good mechanical properties were obtained. The contact angles results indicated that the hydrophilicity of the prepared membranes improved obviously with the addition of CA. When the content of CA was 0.5 wt% and the membrane formation temperature was 323K, the PES/CA microporous membrane which was prepared via the RTIPS process displayed a optimal permeability of the pure water flux of 816 Lm(-2)h(-1) and the BSA rejection rate of 49.5%, which showed an increase of 48.9% and 23.6% than that of pure PES membrane, respectively. Moreover, the mechanical strengths of the membranes obtained by RTIPS process were better than those membranes prepared by NIPS process. POLYM. ENG. SCI., 58:180-191, 2018. (c) 2017 Society of Plastics Engineers