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以六水合三氯化铁为铁源、乙二醇为溶剂和还原剂,采用溶剂热法制备了Fe3O4磁性粒子,同时以正硅酸乙酯为硅源,在碱性条件下对其进行修饰,从而得到具有较好稳定性和分散性的Fe3O4磁性粒子。又以β-环糊精和该修饰的Fe3O4磁性粒子为原料,环氧氯丙烷为交联剂,煤油为油相,采用反相乳液聚合法成功合成了β-环糊精磁性复合微球,并通过SEM、EDS、IR及XRD等方法对该微球进行了表征。结果表明:所合成的β-环糊精磁性复合微球表面光滑,形状比较圆整,粒径大小比较均匀,平均粒径约7μm,具有磁性且保留了β-环糊精的基本结构。
Fe3O4 magnetic particles were prepared by solvothermal method using ferric chloride hexahydrate as iron source and ethylene glycol as solvent and reducer, and modified with basic ethyl orthosilicate as silicon source under alkaline conditions , Resulting in better stability and dispersion of Fe3O4 magnetic particles. And β-cyclodextrin and the modified Fe3O4 magnetic particles as raw materials, epichlorohydrin cross-linking agent, kerosene as the oil phase, the use of reverse phase emulsion polymerization synthesis of β-cyclodextrin magnetic composite microspheres, The microspheres were characterized by SEM, EDS, IR and XRD. The results show that the synthesized β-cyclodextrin magnetic composite microspheres have a smooth surface, a relatively round shape and a uniform particle size with an average particle size of about 7 μm, which is magnetic and retains the basic structure of β-cyclodextrin.