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以对羟基苯甲酸乙酯为模板,α-甲基丙烯酸为功能单体,甲基丙烯酸乙二醇酯为交联剂,偶氮二异丁腈为引发剂,用沉淀聚合法制备对羟基苯甲酸乙酯分子印迹聚合微球。通过一系列的单因素实验优化了聚合反应条件,通过正交实验得出,在模板分子、功能单体、交联剂物质的量比例为1∶6∶20,反应温度为65℃的条件下合成的印迹聚合物的吸附量最大。以紫外-可见分光光度计对印迹聚合物的吸附性、选择性进行了分析。以优化后的反应条件合成的印迹聚合物对对羟基苯甲酸乙酯的相对吸附量为866.55μg/g,同等条件下非印迹聚合物的结果为406.72μg/g。
Using p-hydroxybenzoate as a template, α-methacrylic acid as a functional monomer, ethylene glycol methacrylate as a crosslinking agent, and azobisisobutyronitrile as an initiator, p-hydroxybenzene Ethyl Formate molecularly imprinted polymeric microspheres. The polymerization conditions were optimized by a series of single-factor experiments. The orthogonal experiment showed that under the condition of the ratio of template molecule, functional monomer and crosslinking agent is 1: 6:20 and the reaction temperature is 65 ℃ Synthetic imprinted polymer has the largest adsorption capacity. The adsorption and selectivity of the imprinted polymers were analyzed by UV - Vis spectrophotometer. The relative adsorption amount of ethyl p-hydroxybenzoate was 866.55μg / g for the imprinted polymer synthesized under optimized reaction conditions. The result of non-imprinted polymer under the same conditions was 406.72μg / g.