| Preparation and performance of Poly(m-phenylene isophthalamide) ultrafiltration membranes |
| Authors： Si Huifang1, Li Lin1, Yang Wenhua2, Wang Chunlei1, Song Xiqunan2, Wang Tonghua1 |
| Units： 1. State Key Laboratory of Fine Chemicals, R&D Center of Membrane Science, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China; 2. Yantai Tayho Advanced Materials Co. Ltd, Yantai 264000, China |
| KeyWords： poly(m-phenylene isophthalamide);ultrafiltration membrane; phase inversion; additive; pore structure |
| ClassificationCode：TQ028.8 |
| year,volume(issue):pagination： 2018,38(4):49-55 |
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Abstract： |
| Poly (m-phenylene isophthalamide) (PMIA) ultrafiltration membranes were prepared by L-S phase inversion method by using PMIA as membrane material, N,N-Dimethylacetamide (DMAc) as solvent, Lithium chloride (LiCl), polyvinylpyrrolidone (PVP) and Alcohol (PEG) as additive, The effects of polymer concentration and additive type on casting solution systems, membrane structure and performance were investigated. The results showed that the viscosity of the casting solution increased with the increasing of PMIA, LiCl, PVP and PEG content; and the thermodynamic stability of the casting solution decreased with the increasing of PMIA, PVP, and PEG content, but the addition of LiCl resulted in the thermodynamic stability of the casting solution increasing. Through the analysis of the structure and properties of the membrane, the membranes porosity and pure water flux decreased with the increasing of the concent of PMIA, LiCl and PVP, while the increasing of PEG addition caused that porosity and pure water flux increased and then decreased, a high pure water flux of 707.43 L/(m2·h) was achieved when the PMIA content was 12% and the PEG content was 6%, and all the PMIA membranes showed a good rejection for BSA as high as 99%. |
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Funds： |
| 国家重点研发计划项目（2017YFB0603403）； 国家自然科学基金资助项目(21436009, 21506020, 21576035, 21676044) |
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AuthorIntro： |
| 第一作者简介：司会芳（1993-），女，河南周口人，硕士生，从事聚合物膜研究. * 通讯作者，E-mail：wangth@dlut.edu.cn |
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Reference： |
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