支载型分子印迹聚合物膜的制备及其透过选择性研究

Preparation and Selective Permeation of Molecularly Imprinted Membranes with Supporting Polytetrafluoroethylene Filter

以2-氨基吡啶为模板,采用聚四氟乙烯微孔膜为支载膜,甲基丙烯酸为功能单体,偶氮二异丁腈为引发剂,紫外光引发聚合,制备出支载型分子印迹膜,并研究了分子印迹膜对2-氨基吡啶及其结构类似物的透过选择性,并对甲基丙烯酸与2-氨基吡啶之间的相互作用和膜的形貌进行了表征。结果表明,甲基丙烯酸对模板分子能够形成摩尔比为1∶2的配合物,分子印迹膜能够实现2-氨基吡啶与其类似物的分离。

Molecularly imprinted polymer membranes were prepared with 2-aminopyridine as template molecule, methacrylic acid （MAA） as functional monomer, ethylene glycol dimethacrylate as cross-linker, and azoisebutyrenitrile as initiator by ultraviolet-initiated polymerization in the presence of microporous polytetrafluoroethylene filter, and the selective permeation was studied for the 2-aminopyridine and its analogues. The membrane morphology and the interaction between 2-aminopyridine and methacrylic acid were also character- ized. The results showed that the complex of 2-anminopyridine and MAA with the ratio of 1：2 was formed in the aqueous solution; the imprinted polymer membranes could be used for the separation of 2-anminopyrdine and its analogues.