含氨基磁性高分子微球的制备与表征

摘要

The preparation and characterization of P(MMA-GMA-DVB) magnetic polymer microsphere were reported. Magnetic fluid was prepared by using co-precipitation, and double-surfactant modification was further implemented. With modified Fe3O4 magnetic fluid as the core, the magnetic polymer microsphere was prepared through co-polymerization and ring-opening reactions, followed by chemical co-precipitation. The morphology of magnetic microspheres could be observed by SEM. Thermal stability of magnetic microsphere was testified by Thermal gravity analysis (TG-DTA). The surface of microspheres containing amino groups was proved by infra-red spectrum test (FT-IR). Fe3O4 and magnetic microspheres were characterized by means of X-ray (XRD), and the results showed that the structure of Fe3O4 had no change.%报道了甲基丙烯酸缩水甘油酯-甲基丙烯酸甲酯-二苯乙烯磁性高分子微球的制备与表征.采用共沉淀法制备了磁流体,并进行了双层表面活性剂改性.以改性后的Fe3 O4磁流体为核心,通过开环反应、共聚等方法制备了含有氨基的磁性微球.通过扫描电镜观察磁性微球的形貌.微球的热重分析可以表明磁性微球具有较好的热稳定性.红外光谱测试说明微球表面含有氨基基团.X射线对Fe3O4及磁性微球分别表征,证明Fe3O4结构没有变化.