Abstract
Three kinds of magnetic particle (water-based NiZn ferrite fluid, water-based Fe3O4 magnetic fluid, and silicon-oil-based Fe3O4 magnetic fluid)/polyaniline nanocomposites were prepared in this study. The samples, after drying and grinding, were characterized by infrared spectrometry (IR), X-ray diffraction (XRD), and UV-vis, scanning electron microscope (SEM); their electromagnetic properties were also measured. The conductivitiy of the resulting water-based NiZn ferrite/polyaniline nanocomposites (WBNiZnFe/PA) was the greatest, reaching 0.094 s/cm, while the conductivitiy for water-based Fe3O4 magnetic particle/polyaniline nanocomposites (WBFe3O4/PA) was the lowest, reaching only 0.068 s/cm. The saturation magnetization for WBFe3O4/PA was the greatest, being 1.5 emu/g, while the saturation magnetization for WBNiZnFe/PA was the lowest, being only 0.8 emu/g. The coercivity of all magnetic particle/polyaniline nanocomposites was about He = 200 Oe.
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