Study on the preparation method of novel polyether sulfone/sulfonated polyether sulfone blended ultrafiltration membrane |
Authors: ZHAO Jinli,WANG Jianyou*,ZHANG Yuzhong |
Units: 1.College of Environmental Science and Engineering, Nankai University,Tianjin, 300350; 2. School of Material Science and Engineering,Tianjin Polytechnic University,Tianjin 300387 |
KeyWords: SPES solution; blended membrane; coagulation bath temperature; evaporation time; additive |
ClassificationCode:TQ028.8 |
year,volume(issue):pagination: 2018,38(4):33-42 |
Abstract: |
Based on self-made sulfonated polyethersulfone(SPES)solution, casting solution was prepared by blending SPES solution with polyethersulfone (PES)directly. Novel PES/SPES blended ultrafiltration membranes were prepared in order to simplify the preparation process in this paper. Effect of content of PES and SPES, coagulation bath temperature, evaporation time and additive on morphology and performance of blended membranes were investigated. The result showed that reduced viscosity increased with decrease of temperature of casting solution and increase of content of acid in casting solution. All the blended membranes presented asymmetric morphology consisting of dense top layer and porous sub-layer. With increase of content of PES and SPES, the pure water flux of blended membrane decreased and the rejection rate for PEG6000 increased. With increase of coagulation bath temperature and evaporation time, the pure water flux of blended membrane increased and the rejection rate decreased. The addition of polyethylene glycol 200(PEG200)and acetone were helpful to improve the overall performance of the blended membrane. With addition of 2%wt, the pure water fluxes were more than 460L/m2?h and rejection rates of PEG6000 were more than 85%. |
Funds: |
国家重点研发计划(No.2016YFC0400707-2, No.2017YFC0404003) |
AuthorIntro: |
第一作者简介:赵津礼(1987-),男,山东临沂市人,博士研究生,主要从事膜分离、电驱动膜方向,E-mail:zhaojinli-1016@163.com;通讯作者,E-mail:wangjy72@nankai.edu.cn |
Reference: |
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