Study Of Inorganic Nanoparticles/ Conducting Polyaniline Nanocomposites

Conducting polymer nanocomposites (CPC) have motivated considerable interest in recent years because of their unique properties and potential applications.In this thesis, we paid attention to PANI, introduced ZrO₂ and Co₃O₄ nanoparticles into organic/inorganic system. In order to increase the conductivity and the thermal stability, two new nanocomposites of PANI/ZrO₂ and PANI/Co₃O₄ were synthesized by using solution polymerization, emulsion polymerization and reversed micelle polymerization, respectively. The preparation conditions of PANI/ZrO₂ and PANI/Co₃O₄ were optimized. The results suggest that the conductivity of PANI/ZrO₂ obtained using the three synthetic methods is the same as the PANI. However, for the PANI/Co₃O₄, the conductivity of the composites obtained using solution polymerization and reversed micelle polymerization are two magnitudes larger than PANI.The thermal stability of the two composites (PANI/ZrO₂ and PANI/Co₃O₄) was investigated by thermal gravimetry. The kinetic parameters of the degradation processes were calculated. The results suggest that the environment and thermal stability of the two composites is higher than that of the PANI. The thermal stability of the two composites obtained by emulsion polymerization is the highest.The capacitance properties of PANI/Co₃O₄ nanocomposite were investigated with cyclic voltammetry, charge-discharge tests and ac impedances spectroscopy.