Specific Electrical Conductivity of Thin Films of Polyaniline Doped with Sulfuric Acid

This paper presents the specific electrical conductivity of thin films of polymer polyaniline which was doped with sulfuric acid. Polyaniline in the undoped state is an insulator and doping can convert it into a conductor of electrical current. Polyaniline material (PANI) which was the subject of the research in this study was synthesized in our laboratory with the method of oxidative polymerization reaction at 0°C and at room temperature of 20°C. Doping was carried out directly in the production process. From the thus obtained doped materials (PANI-H2SO4) were made thin films by the method of rotating disk at different speeds. Based on the measured electrical resistance of each film individually, we calculated specific electrical conductivity. It is shown that this conductivity depends on the temperature at which the doping is carried out with sulfuric acid, as well as on the speed of the rotating disk on which the individual thin films were obtained.