Microwave Absorption Behavior of Polyaniline/Nanocrystalline-Co0.5Zn0.5Fe2O4 Composites

A nitrate–citrate gel was prepared from metallic nitrates and citric acid by sol–gel process, and wasfurther used to synthesize Co0.5Zn0.5Fe2O4 nanocrystalline powder by auto-combustion. Then, two novel 15 and35 % magnetic Co0.5Zn0.5Fe2O4 containing polyaniline nanocomposites, which were named as PANi/Co15 andPANi/Co35, respectively, were prepared via in-situ polymerization of aniline in an aqueous solution containingCo0.5Zn0.5Fe2O4 magnetic powder and ammonium persulfate as oxidant. After successful composite synthesis andcharacterization by IR and XRD methods, microwave absorbing performances are investigated in the frequencyrange of 1–18 GHz. Results showed the reflection loss of the PANi/Co15 composite is higher than pure polyanilineand PANi/Co35.

کلیدواژه ها:

wave absorption ، polyanilin composites ، nanocrysyalline Co0.5Zn0.5Fe2O4