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以表面修饰功能基团的SiO2微球为基体,以厚朴酚为模板分子,丙烯酰胺为功能单体,丙烯酸乙二醇二甲酯为交联剂,在SiO2微球表面制备对厚朴酚具有较好选择识别能力的核-壳型印迹聚合物。采用红外光谱及扫描电镜等技术表征聚合物的结构及形态。结果表明,该印迹聚合物表面成功制备了壳层厚度约为200nm的均匀印迹层。通过静态吸附、Scatchard分析法以及竞争吸附实验研究了该聚合物的吸附性能和选择性,结果表明,它对厚朴酚形成均一结合位点,离解常数为0.19mg/mL。
SiO 2 microspheres with surface-modified functional groups as matrix, honokiol as template molecule, acrylamide as functional monomer and ethylene glycol dimethyl ester as crosslinking agent were used to prepare honokiol Core-shell imprinted polymers with better choice of recognition ability. The structure and morphology of the polymer were characterized by infrared spectroscopy and scanning electron microscopy. The results show that a uniform imprinted layer with a shell thickness of about 200 nm has been successfully prepared on the imprinted polymer surface. The adsorption properties and selectivity of the polymer were investigated by static adsorption, Scatchard analysis and competitive adsorption experiments. The results showed that it formed a uniform binding site for honokiol with a dissociation constant of 0.19 mg / mL.