化学学报 ›› 2009, Vol. 67 ›› Issue (15): 1791-1796. 上一篇    下一篇

研究论文

紫外辐照接枝制备亲水性两性纳滤膜

吴嘉杰 唐晶欣 曹绪芝 平郑骅

  

  1. (教育部聚合物分子工程重点实验室 复旦大学高分子科学系 上海 200433)

  • 收稿日期:2009-01-22 修回日期:2009-03-17 出版日期:2009-08-14 发布日期:2009-08-14
  • 通讯作者: 平郑骅

Preparation of Hydrophilic Amphoteric Nanofiltration Membrane by UV Irradiation Graft Polymerization

Wu, Jiajie Tang, Jingxin Cao, Xuzhi Ping, Zhenghua*   

  1. (Key Laboratory of Molecular Engineering of Polymers (Ministry of Education), Department of Macromolecular Science, Fudan University, Shanghai 200433)
  • Received:2009-01-22 Revised:2009-03-17 Online:2009-08-14 Published:2009-08-14
  • Contact: Ping, Zhenghua

通过紫外辐照在酚酞基聚芳醚酮(PEK-C)超滤膜表面引发自由基共聚反应, 依次接枝二甲基二烯丙基氯化铵(DADMAC)和对苯乙烯磺酸钠(SSS), 制成亲水性、表面载有两种不同电荷的纳滤膜. 通过测定膜的纯水通量和对不同盐溶液表观截留率的变化, 系统研究了单体浓度和接枝时间对膜的分离性能的影响. 结果表明, 用这种方法制成的亲水性两性纳滤膜对盐溶液的截留作用与两种单体在接枝液中的浓度和接枝时间有关. 膜对由高价同离子和高价反离子组成的盐表现出优良的截留作用.

关键词: 紫外接枝, 酚酞基聚芳醚酮, 两性纳滤膜, 二甲基二烯丙基氯化铵, 对苯乙烯磺酸钠

A hydrophilic amphoteric nanofiltration membrane was prepared by UV irradiation successive graft polymerization of diallyldimethylammonium chloride (DADMAC) and sodium styrenesulfonate (SSS) onto the surface of ultrafiltration membranes made of polyetherketone cardo (PEK-C). The effect of monomer concentration in solution and grafting time on the membrane performances was studied by measuring pure water flux and salt retention through the membrane. The results showed that the membrane performances of the amphoteric nanofiltration membrane were related to the monomer concentration in solution and the grafting time of the two monomers. The membrane has high retention to salts composed of high valent co-ions and counter-ions.

Key words: UV irradiation, polyetherketone-cardro, amphoteric nanofiltration membrane, diallyldimethylammonium chloride, sodium styrenesulfonate