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采用高分子凝胶法制备尖晶石型Co0.5Zn0.5Fe2O4,原位聚合法制备纯聚苯胺和聚苯胺/Co0.5Zn0.5-Fe2O4纳米复合材料.使用傅立叶红外光谱(FTIR)、紫外可见吸收光谱(UV-Vis)、X射线衍射仪(XRD)和透射电子显微镜(TEM)对复合材料进行了表征.FTIR和XRD的结果表明样品为纯聚苯胺和聚苯胺/Co0.5Zn0.5-Fe2O4.UV-Vis光谱表明聚苯胺/Co0.5Zn0.5Fe2O4苯环上的π-π*和n-π*分别红移了23nm和5nm.TEM照片可知,聚苯胺和聚苯胺/Co0.5Zn0.5Fe2O4粒子的平均粒径分别约为50nm和70nm.在8.2～12.4GHz测试频率范围内,聚苯胺/Co0.5Zn0.5Fe2O4的ε″数值在9.2～12.3之间,u″数值在0.15～0.16之间;聚苯胺/Co0.5-Zn0.5Fe2O4介电损耗低于纯聚苯胺,而磁损耗高于纯聚苯胺.
The pure polyaniline and polyaniline / Co0.5Zn0.5-Fe2O4 nanocomposites were prepared by in-situ polymerization with polymer gel method.FTIR spectroscopy (FTIR) The composites were characterized by UV-Vis, X-ray diffraction (XRD) and transmission electron microscopy (TEM) .The results of FTIR and XRD showed that the samples were pure polyaniline and polyaniline / Co0.5Zn0.5- Fe2O4.UV-Vis spectra showed that π-π * and n-π * on the polyaniline / Co0.5Zn0.5Fe2O4 benzene ring were redshifted by 23nm and 5nm, respectively, and TEM images show that polyaniline and polyaniline / Co0.5Zn0. 5Fe2O4 particles were about 50nm and 70nm, respectively.Under the test frequency range of 8.2 ~ 12.4GHz, the values of ε “of polyaniline / Co0.5Zn0.5Fe2O4 ranged from 9.2 to 12.3 and the values of u” were from 0.15 to 0.16 ; Polyaniline / Co0.5-Zn0.5Fe2O4 dielectric loss is lower than pure polyaniline, while the magnetic loss is higher than pure polyaniline.