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首页> 外文期刊>Journal of Applied Polymer Science >Molecularly imprinted nanoparticles prepared by core-shell emulsion polymerization
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Molecularly imprinted nanoparticles prepared by core-shell emulsion polymerization

机译：通过核壳乳液聚合制备的分子印迹纳米颗粒

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摘要

Submicron core-shell polymer particles, with molecularly imprinted shells, were prepared by a two-stage polymerization process. Particles of this type, prepared with a cholesterol-imprinted ethyleneglycol dimethacrylate shell and in the absence of porogen, were found to be 76 nm in diameter with a surface area of 82 m(2) g(-1) Cholesterol uptake from a 1 mM solution in isohexane was measured at both 10 and 30 mg mL(-1), with the imprinted polymer showing considerable binding (up to 57%). Imprinted but not hydrolyzed and hydrolyzed nonimprinted polymers showed very low uptakes (less than or equal to 4.5%) and a phenol-imprinted polymer showed reduced binding (36%) under the same conditions. Imprinted shells were also prepared over superparamagnetic polymer cores and over magnetite ferrocolloid alone. The cholesterol binding to magnetic particles was very similar to that of equivalent nonmagnetic materials. Magnetic particles could be sedimented in as little as 30 s in a magnetic field. (C) 2000 John Wiley & Sons, Inc. [References: 31]
机译：具有分子印迹壳的亚微米核-壳聚合物颗粒是通过两步聚合过程制备的。用胆固醇印迹的乙二醇二甲基丙烯酸酯壳制备且没有致孔剂的这种类型的颗粒的直径为76 nm，表面积为82 m（2）g（-1），从1 mM摄取胆固醇分别在10和30 mg mL（-1）下测量了异己烷溶液的浓度，印迹聚合物显示出显着的结合力（最高57％）。在相同条件下，印迹但未水解和水解的非印迹聚合物显示出极低的吸收率（小于或等于4.5％），而苯酚印迹聚合物的结合力降低（36％）。还可以在超顺磁性聚合物核和单独的磁铁矿铁胶体上制备压印外壳。胆固醇与磁性颗粒的结合与等效的非磁性材料非常相似。磁性粒子在磁场中的沉积时间可短至30 s。 （C）2000 John Wiley＆Sons，Inc. [参考：31]

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