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以氨水作为沉淀剂并控制溶液的pH值,采用Fe3+和Fe2+共沉淀法制得了磁性四氧化三铁纳米颗粒。合成的磁性纳米颗粒通过高分辨透射电镜、X射线衍射仪、傅里叶变换红外光谱仪进行了表征。四氧化三铁纳米颗粒的粒径约为10nm,其表面含有丰富的羟基。为了增强磁性四氧化三铁纳米颗粒和聚合物基质之间的相互作用,在纳米颗粒的表面接枝上乙烯基单体。傅里叶变换红外光谱仪和热重分析仪的测试结果显示,聚合物链共价结合在纳米颗粒表面。表面接枝聚合后,四氧化三铁纳米颗粒由极性转变为非极性。
With ammonia as a precipitating agent and controlling the pH value of the solution, magnetic Fe3O4 nanoparticles were prepared by Fe3 + and Fe2 + coprecipitation methods. The synthesized magnetic nanoparticles were characterized by high resolution transmission electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy. Ferrosoferric oxide nanoparticles particle size of about 10nm, the surface is rich in hydroxyl. To enhance the interaction between the magnetic triiron tetroxide nanoparticles and the polymer matrix, vinyl monomers are grafted onto the surface of the nanoparticles. The results of Fourier transform infrared spectroscopy and thermogravimetric analysis showed that the polymer chains were covalently bound to the surface of nanoparticles. Surface graft polymerization, ferroferric oxide nanoparticles from the polarity of a non-polar.