表面含羧基的交联磁性高分子复合微球的合成
Synthesis of Cross-linked Magnetic Composite Microspheres Containing the Carboxyl Group
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摘要: 首先用化学共沉淀法制备了Fe3O4纳米微粒,并对其表面进行改性。然后在分散介质水中,以二乙烯基苯(DVB)为交联剂,采用改进的乳液聚合法,制备了磁性Fe3O4为核、苯乙烯和丙烯酸的共聚物为壳的交联复合微球,并利用FT-IR、TEM、XRD和XPS等对其进行表征。结果表明:该复合微球的粒度分布均匀、表面含有一定羧基,为单分散性、表面功能化的交联磁性高分子纳米复合微球。Abstract: The nano particles of Fe_3O_4 were prepared by a co-precipitation method and were modified by oleic acid.An improving route of emulsion polymerization is presented in this paper.By(using) DVB as a cross-linker,monodisperse cross-linked magnetic composite
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