邻香草醛分子印迹聚合物膜的制备及其透过选择性质的研究  

Preparation and Selective Permeation Characterization of Molecularly Imprinted Membranes with o-Vanillin as Template

作　　者：卢春阳[1] 马向霞[1] 何锡文[1] 李文友[1] 陈朗星[1] 

机构地区：[1]南开大学化学系吸附分离功能高分子材料国家重点实验室,天津300071

出　　处：《化学学报》2005年第6期479-483,F006,共6页Acta Chimica Sinica

基　　金：国家自然科学基金(Nos.20175009;20375017;20375019);高等学校博士学科点专项科研基金(No.2002055002);天津市自然科学基金(No.033603511)资助项目.

摘　　要：采用紫外光引发原位聚合的方法制备了具有支撑膜的邻香草醛分子印迹聚合物膜.紫外光度法测定了模板分子和功能单体之间的结合常数和化学计量比(n=2).用傅立叶红外光谱和扫描电镜分别测定了膜的结构和表面形貌;膜渗透实验结果表明在干扰物存在时印迹膜对模板分子表现出良好的选择透过性能.研究了分子印迹聚合物膜透过的机理、并为分子印迹技术应用于传感器领域增加了理论和实验方法.Using o-vanillin as template molecule, molecularly imprinted polymer membranes with supporting membrane were synthesized through in-situ polymerization by UV irradiation. The binding constant and chemical combination ratio of the complex formed between o-vanillin and the functional monomer were obtained by UV spectrophotometry. The membrane structure and surface features were analyzed by FTIR spectrogram and scan electron micrography. Permeation experiment results showed that the imprinted membrane exhibited selective permeation properties for o-vanillin in the presence of the interfering molecule. This work can improve the study of molecularly imprinted membrane permeation mechanism, and also increase the application of molecularly imprinting technique to the sensor field.

关 键 词：分子印迹聚合物 模板分子 香草醛 化学计量比 功能单体 紫外光引发 结合常数 制备 原位聚合 傅立叶红外光谱 

分 类 号：O631[理学—高分子化学]