Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (21): 2238-2242. Previous Articles     Next Articles

Full Papers

三维有序大孔交联聚苯乙烯的功能化及其吸附性能

王小梅1,原丽霞1,曲佳燕1,张宇1,张旭*,1,2   

  1. (1河北工业大学化工学院 天津 300130)
    (2中国科学院化学研究所 高分子物理与化学国家重点实验室 北京100080)
  • 投稿日期:2010-05-06 修回日期:2010-06-12 发布日期:2010-07-12
  • 通讯作者: 张旭 E-mail:xuzhang@hebut.edu.cn
  • 基金资助:

    响应性三维有序大孔聚烯烃材料的构筑及其性能研究;三维有序大孔材料功能化及其在吸附分离中的应用

Functionalization and Adsorption Properties of Three-dimensionally Ordered Macroporous Cross-linked Polystyrene

Wang Xiaomei1 Yuan Lixia1 Qu Jiayan1 Zhang Yu1 Zhang Xu*,1,2   

  1. (1 Department of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300130)
    (2 State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Science, Beijing 100080)
  • Received:2010-05-06 Revised:2010-06-12 Published:2010-07-12
  • Contact: Xu Zhang E-mail:xuzhang@hebut.edu.cn

Three-dimensionally ordered macroporous cross-linked polystyrene (3DOM CLPS) with pore size of 890 nm was prepared by sacrifice template method. The hydrophilic spacer arm (triethylene glycol, TEG) was grafted to the 3DOM CLPS via nucleophilic substitution reaction. The 2-mercaptobenzothiazole (MBZ) group was attached via TEG to framework of 3DOM CLPS. The final product was characterized by FT-IR and element analysis. In addition, the results of SEM showed that the ordered and interconnected macroporous structure is well preserved after functionalization. The relative large pores of 3DOM CLPS allow introduction of longer polymer chains to the framework, and not to plug the channels. The interconnected channels can accelerate the materials exchange. Furthermore, the adsorption capacities and adsorption kinetics of the functionalized 3DOM CLPS were tested. The adsorption capacities for Ag and Hg2+ were 0.78 and 0.39 mmol/g, respectively. The results indicated that introduction of hydrophilic spacer arms between the 3DOM framework and heterocyclic functional groups improve the adsorption capacity. The adsorptions kinetic at different temperatures were also investigated.

Key words: three-dimensionally ordered macroporous polymer, functionalization, hydrophilic spacer arm, heterocyclic functional group, adsorption