高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (09): 2111-2116.doi: 10.3969/j.issn.0251-0790.2012.09.041

• 高分子化学 • 上一篇    下一篇

分子印迹β-环糊精聚合物选择性识别水中的双酚A

胡品1, 熊振湖1,2, 刘建明1,2   

  1. 1. 天津城市建设学院环境与市政工程系, 天津 300384;
    2. 天津市水质科学与技术重点实验室, 天津 300384
  • 收稿日期:2012-11-15 出版日期:2012-09-10 发布日期:2012-08-14
  • 通讯作者: 熊振湖,男,博士,教授,主要从事环境污染物的化学控制方法研究.E-mail:zhenhu.xiong@126.com E-mail:zhenhu.xiong@126.com
  • 基金资助:

    国家自然科学基金(批准号: 50878138)资助.

Selecting Reorganization of Bisphenol A by Molecularly Imprinted β-Cyclodextrin Polymer in Aqueous Solution

HU Pin1, XIONG Zhen-Hu1,2, LIU Jian-Ming1,2   

  1. 1. Department of Environmental and Municipal Engineering, Tianjin Institute of Urban Construction Tianjin, 300384, China;
    2. Tianjin Key Laboratory of Water Quality Science and Technology, Tianjin 300384, China
  • Received:2012-11-15 Online:2012-09-10 Published:2012-08-14

摘要:

以双酚A为模板分子, β-环糊精为功能单体, 六亚甲基二异氰酸酯为交联剂, 二甲基亚砜为溶剂, 采用沉淀聚合法合成了分子印迹β-环糊精聚合物. 用傅里叶变换红外光谱仪、 扫描电子显微镜对聚合物的结构进行表征. 从选择性、 吸附容量、 结合特性对吸附剂的性能进行了评价. 底物类似物的机会均等与机会不均等竞争吸附实验证明了β-CD-MIPs对底物的结合容量远大于对类似物的结合容量. 用热力学参数对实验数据进行拟合, 发现β-CD-MIPs对BPA的吸附为自发的放热过程, 温度低对吸附有利.

关键词: 分子印迹聚合物, β-环糊精, 双酚A, 特异选择性, 吸附

Abstract:

Molecularly imprinted polymers (MIP) were synthesized by mixing bisphenol A(BPA) as the template, β-cyclodextrin as the monomer and hexamethylene diisocyanate (HDI) as the cross-linker in anhydrous dimethyl sulfoxide (DMSO). The obtained polymer particles were characterized by infrared spectrophotometer (IR) and scanning electron microscopy (SEM). The results of equal and unequal opportunity competition adsorption between bisphenol A(BPA) and bisphenol C(BPC) confirmed that β-CD-MIPs exhibited much better recognition and selectivity for BPA than BPC. The parameters of thermodynamics for the adsorption process verified the adsorption reaction was spontaneous and exothermic process and low temperature was favorable for adsorption.

Key words: Molecular imprinted polymer, β-Cyclodextrin, Bisphenol A, Specific selectivity, Adsorption

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