乙酸薄荷酯分子印迹聚合物的制备及其吸附特性

本文分别考察了不同单体、反应溶剂、充氮时间、反应温度、单体添加量、交联剂添加量对乙酸薄荷酯分子印迹聚合物制备的影响。结果表明,以乙酸薄荷酯为模板分子,丙烯酰胺为单体,以N,N-二甲基甲酰胺为反应溶剂制备的聚合物,其选择性比较好,通过聚合物的吸附分离,可以将薄荷素油中乙酸薄荷酯的含量提高到14.65%;而当单体、交联剂添加量与模板分子量的比例为1:4:16时,制备的聚合物对模板分子有较高的结合性能,结合量为5.09 mg/g,对乙酸薄荷酯和薄荷醇的分离因子为1.46,说明印迹聚合物对乙酸薄荷酯具有良好的吸附选择性。

Preparation and Adsorption Properties of Molecular Imprinted Polymers of Menthyl Acetate

The influence of the monomer substance, reaction solvent, nitrogen filling time, reaction temperature, monomer amount and cross linker dosage on the preparation of the molecular imprdinted polymers were investigated. The results showed that the molecular imprinted polymers prepared using menthyl acetate as the template molecules showed better selectivity using acrylamide as the monomer and N, N-dimethyl formamide as reaction solvent. After adsorption separation by the polymers, the menthyl acetate content of peppermint oil was improved to 14.65%. When the mass ratio of the template molecular, monomer and cross linker was 1:4:16, the polymers had a higher binding capacity of 5.09 mg/g and its separation factor for menthyl acetate and menthol was 1.46, showing that the imprinted polymers had good adsorption selectivity for menthyl acetate.