Influence of TiO2 and SiO2 on Electrochemical, Optical and Electrical Conductivity of Polyaniline, Poly(o-toluidine) and Their Co-polymer

Abstract

A conducting composite of polyaniline, poly(o-toluidine) and poly(aniline-co-o-toluidine) using incorporation of TiO 2 and SiO 2 was prepared by electrochemical polymerization. The films were electro-polymerized in solution containing 0.1 M monomer(s), 1 M sulphuric acid as supporting electrolyte and 10 −5 M TiO 2 and SiO 2 , applying a sequential linear potential scan rate of 50 mV/s between −0.2 and 1.0 V versus Ag/AgCl electrode. The characterization of the composites was done by cyclic voltammetry, UV-Vis spectroscopy, electrical conductivity and thermogravimetric analysis. It is observed that the UV-Vis peaks are appearing in the region of conducting emerladine salt (ES) phase. In overall study, the polymers prepared using TiO 2 have higher conductivity than SiO 2 , with the highest conductivity observed for the polyaniline-TiO 2 conducting composite. The composite does not lose its colour at higher temperature and, hence, can be utilized as conductive pigments required for anti-electrostatic applications.

Comparative Study: Synthesis, Characterization, and ORR Activity of Pot and TiO2-Pot Nanocomposites

“…Most of the researches on these polymers are still focusing on the preparation of such materials and their morphological characterization, such as size and shape of the oxide particles, degree of dispersion, kinds of interaction and interface between the organic and inorganic phase, conductive pigments required for anti-electrostatic applications, sensors and so on. A very few reports have touched upon the electrochemical properties of PoT-TiO2 (10,11). However, very little focus has been given to the effect of concentration changes of monomer and inorganic oxide in the in-situ polymerization method.…”

Synthesis and characterization of poly(m-aminophenol)-succinat

“…PANI and its derivatives can be used as electronic or electro-conductive materials in a wide variety of application areas for instance: cell electrode materials, fabrication of secondary batteries, electrochromic display, electromagnetic shielding materials, various sensors and gas-separating membranes. [1][2][3][4][5][6] The great difficulty in technological application of PANI is due to its low solubility. Unsubstituted PANI in salt form is insoluble in common organic solvents.…”

Non-conventional synthesis and antibacterial activity of poly(aniline-co-o-phenylenediamine)/bentonite nanocomposites

“…[6] The properties of PANI and PANI derivatives have been improved by molecular design, modification of monomer structure, and preparation of composites and co-polymers. [7,8] Copolymerization is one of the simplest methods for improving the properties of PANI and its derivatives. The relationship between the reactants and the mechanism of the polymerization has been recently studied.…”