In situ synthesis and AC conductivity studies of polypyrrole–cobalt nanocomposites

Abstract

Through in situ pyrrole chemical polymerization with various concentrations of CoCl2, conducting polypyrrole-cobalt composites were synthesized using ammonium persulfate as the oxidizing agent. These composites were synthesized using different molarities (0.01, 0.02, 0.03, and 0.05 M) of CoCl2 in polypyrrole. The PPy-Co nanocomposites and their AC conductivity studies were evaluated in this study. The formation of nanocomposites and the structural properties of PPy/PVA/Co were confirmed using FTIR analysis and X-ray crystallography. Scanning electron microscopy (SEM) was used to analyze the morphology of the composites, and thermogravimetric analysis (TGA) was used to investigate their thermal behavior. The room-temperature AC conductivity and dielectric response of the composites were investigated, and frequency-dependent AC conductivity investigations were conducted in the frequency range of 100 Hz–1 MHz.