| 王辉,崔梦冰,闫冬冬,陈改荣.添加剂对聚丙烯腈膜结构和性能的影响[J].材料导报,2018,32(4):555-558 |
| 添加剂对聚丙烯腈膜结构和性能的影响 |
| Effects of Additives on Structure and Performance of Polyacrylonitrile Membrane |
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| DOI：10.11896/j.issn.1005-023X.2018.04.009 |
| 中文关键词: 聚丙烯腈膜 结构 水通量 接触角 截留率 |
| 英文关键词: polyacrylonitrile membrane, structure, water flux, contact angle, rejection |
| 基金项目:基金项目:河南省教育厅科学技术重点研究科研项目(15A150075)；新乡学院科技创新基金项目(15ZC01)；新乡学院空气净化与水污染防治创新团队项目(XXUTD20170111) |
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| 中文摘要: |
| 采用相转化法制备聚丙烯腈膜,分别以高分子聚乙烯吡咯烷酮(PVP-K30和PVP-K90)、聚乙二醇(PEG-2000和PEG-6000)和有机小分子乙二醇、无机盐氯化锂(LiCl)等六种物质作为制备聚丙烯腈膜的添加剂,含量均为3%(质量分数)。并对聚丙烯腈膜的表面和断面结构、水通量、孔隙率、水接触角及对牛血清蛋白(BSA)的截留率等进行了测试及表征。结果表明:以PEG-2000 作为添加剂制得的膜的微孔较多,孔径较大,断面为指状结构,具有最大的水通量和孔隙率,达到436 L/(m2·h)和86%；有机小分子乙二醇作为添加剂制得的膜的水通量较低,但对BSA 的截留率最高,为93%；聚乙烯吡咯烷酮(PVP)和聚乙二醇(PEG)制得的膜的水接触角较低,最小达到68°,亲水性较好。 |
| 英文摘要: |
| Polyacrylonitrile membranes were prepared by phase-inversion method. Polyvinylpyrrolidone (PVP-K30, PVP-K90), polyethylene glycol (PEG-2000, PEG-6000), small organic molecule glycol and inorganic salt lithium chloride (LiCl) were used as additives. The mass fraction of the additive was 3 wt%. The surface and sectional structure, water flux, porosity, water contact angle and BSA rejection of the polyacrylonitrile membranes were studied. The results showed that the polyacrylonitrile membrane with PEG-2000 had many large pores, the sectional structure was sponge-like. It had highest water flux value and porosity, which were 436 L/(m2·h) and 86%, respectively. The water flux value of the membrane with glycol was low, but the rejection rate of BSA had a highest value of 93%. The membranes with PVP and PEG showed good hydrophilicity, the lowest value of contact angle was 68°. |
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