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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (22): 2717-2722. 上一篇    下一篇

研究论文

莠去津分子印迹聚合物的合成及识别性能研究

王志霞，王兵*   

  1. (天津工业大学中空纤维膜材料与膜过程省部共建国家重点实验室培育基地 天津工业大学环境与化学工程学院 天津 300160)
  • 投稿日期:2011-05-26 修回日期:2011-07-01 发布日期:2011-07-11
  • 通讯作者: 王兵 E-mail:bingwang666@yahoo.com.cn
  • 基金资助:

    天津市自然科学基金重点项目

Preparation of Atrazine Molecularly Imprinted Polymers and Recognized Characteristics

WANG Zhi-Xia, WANG Bing   

  1. (State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160)
  • Received:2011-05-26 Revised:2011-07-01 Published:2011-07-11

PDF

1308

被引次数

17

以莠去津为模板分子, α-甲基丙烯酸为功能单体, 在氯仿溶剂中合成了莠去津分子印迹聚合物. 紫外光谱研究表明莠去津与功能单体α-甲基丙烯酸之间确实存在作用力. 通过红外光谱分析了聚合物结构, 可以确定模板分子与功能单体之间的作用力为氢键. 利用透射电镜表征了溶剂用量对印迹聚合物微观形貌的影响, 综合利用平衡结合实验考察了不同溶剂用量下聚合物的结合性能. 结果表明聚合物最大结合量达到42.6 μmol/g. 同时对比了印迹聚合物对模板分子莠去津、其结构类似物西玛津及萘普生的吸附效果, 结果显示印迹聚合物对莠去津的吸附量明显高于西玛津、萘普生的吸附, 表现出较高的特异识别性.

关键词: 分子印迹技术, 莠去津, 印迹聚合物, 微观形貌, 识别性能

Molecularly imprinted polymer for atrazine was prepared in chloroform solvent, using atrazine as template molecule and methacrylic acid (MAA) as functional monomer. The interaction between atrazine and functional monomer was verified by ultraviolet absorption spectroscopy. The structure of polymers was analyzed by infrared spectra. The results indicated that hydrogen bonding was formed indeed between template molecule and functional monomer. The morphology of polymers, prepared in different amount of solvent, was observed by transmission electron microscopy. And the equilibrium bind experiments which were combined with the transmission electron microscopy was used to testify the influence of different amount of solvent. It showed that the amount of solvent had obvious influence on the adsorption properties and morphology of polymers. It was also found that the max binding capacity was up to 42.6 µmol/g. In addition, the results of specific absorption experiments showed that molecularly imprinted polymer had a good recogntion characteristic to atrazine.

Key words: molecular imprint technique, atrazine, molecularly imprinted polymer, morphology, recognition characteristics

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