高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (11): 2579.doi: 10.7503/cjcu20120078

• 高分子化学 • 上一篇    下一篇

基于原子转移自由基聚合制备新型螯合树脂及其吸附性能

王琴会, 王超展, 卫引茂   

  1. 西北大学化学与材料科学学院, 合成与天然功能分子化学教育部重点实验室, 西安 710069
  • 收稿日期:2012-01-16 出版日期:2012-11-10 发布日期:2012-10-15
  • 通讯作者: 卫引茂,男,教授,博士生导师,主要从事分离科学理论及分离材料制备研究.E-mail:ymwei@nwu.edu.cn E-mail:ymwei@nwu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 21275115, 20975080); 教育部新世纪优秀人才支持计划基金(批准号: NCET-08-0892)和教育部科学技术研究重点项目(批准号: 212178)资助.

Preparation and Adsorption Properties of New Chelating Resin Based on Chloromethylated Polystyrene Beads via Surface-initiated Atom Transfer Radical Polymerization

WANG Qin-Hui, WANG Chao-Zhan, WEI Yin-Mao   

  1. Key Laboratory of Synthesis and Natural Function Molecule Chemistry of Ministry of Education, College of Chemistry & Material Science, Northwest University, Xi’an 710069, China
  • Received:2012-01-16 Online:2012-11-10 Published:2012-10-15
  • Contact: Yin MaoWEI E-mail:ymwei@nwu.edu.cn

摘要:

以氯甲基化聚苯乙烯树脂(CMPS)为基质, 通过表面引发原子转移自由基聚合(SI-ATRP)反应将聚甲基丙烯酸缩水甘油酯(PGMA)接枝到树脂表面, 再与亚氨基二乙酸(IDA)反应, 制备了一种新型螯合树脂. 采用红外光谱、 元素分析及比表面积与微孔分析仪对其结构进行表征. 树脂表面甲基丙烯酸缩水甘油酯(GMA)接枝量和IDA含量及对Ni(Ⅱ), Cu(Ⅱ)和Pb(Ⅱ)的吸附容量均随聚合时间的延长而增大, 聚合时间为18 h时, 最大吸附容量分别为1.29, 1.19和0.83 mmol/g. 结果表明, SI-ATRP是制备高吸附容量及吸附容量可控的螯合树脂的可行方法.

关键词: 氯甲基化聚苯乙烯树脂, 表面引发原子转移自由基聚合, 亚氨基二乙酸, 重金属离子, 吸附性能

Abstract:

A new chelating resin was prepared by grafting poly(glycidyl methacrylate)(PGMA) onto the chloromethylated polystyrene beads via surface-initiated atom transfer radical polymerization(SI-ATRP), and followed by the reaction of epoxy groups in the grafted PGMA with iminodiacetic acid(IDA). The structure of chelating resin was characterized using Fourier transform infrared spectroscopy, elemental analysis, surface \{area and porosity analyzer. An increase in the polymerization time leads to the increases in GMA grafting \{yield, IDA binding amount and adsorption capacities of Ni(Ⅱ), Cu(Ⅱ) and Pb(Ⅱ). When the polymerization time was 18 h, the maximum sorption capacities of Ni(Ⅱ), Cu(Ⅱ) and Pb(Ⅱ) were 1.29, 1.19 and 0.83 mmol/g, respectively, which were higher than those on the same type of the reported absorbent. The results indicated ATRP is a feasible method to prepare chelating resin with higher and controlled adsorption \{capacity.

Key words: Chloromethylated polystyrene bead, Surface-initiated atom transfer radical polymerization, Iminodiacetic acid, Heavy metal ion, Adsorption capacity

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