Synthesis, Characterization, Dielectric Behavior and AC Conductivity of ZrO2 Doped Polyaniline

The composites of polyaniline (PANI) with Zirconium dioxide (ZrO2) at different weight percentage are synthesized by insitu chemical oxidation polymerization method using Ammonium peroxydisulfate (APS) as an oxidizing agent. The composite formation and structural changes are studied using X-ray diffractometer to investigate amorphous or crystalline nature. From XRD it is found that polyaniline is amorphous in nature and composite is in crystalline in nature and ZrO2 is uniformly distributed in the PANI. SEM images confirmed that size particles of PANI and its composite is in the range of 0.9-1µm. Further the dielectric constant, dielectric loss and AC conductivity are studied as a function of frequency at room temperature. The dielectric constant, dielectric loss decreased as frequency increased and after 1.5 KHz they almost remain constant. AC conductivity increased after 1.5 KHz as frequency increased.