Samples of polyaromatic amines were synthesised by chemical and electrochemical methods, using different amounts of electrolytes for the purpose of doping the polymer. These polymers were found to show electrical conductivity in the range 10−12–10−6 S/cm. A study of conductivity at various temperatures indicates the semiconducting behaviour of these polymers. Thermal analysis shows that these polymers have high thermal stability.

ABSTRACT:The copolymerization technique is an easy way to achieve better properties in a polymer. Copolymers of benzidine with aniline and its substituted derivatives in different comonomer proportions were synthesised using chemical and electrochemical methods. The characterization of the copolymers included elemental, IR, FTIR, XPS, TGA, thermal aging, and electrical conductivity studies. Specific conductivities of copolymers were obtained at different temperatures. Activation energies were calculated from the change in conductivity with temperature. The effect of steric influence on the electrical conductivities of copolymers was observed. Conductivity is also found to be highly dependent on factors like moisture and % doping. Thermal analysis shows a good thermal stability of the copolymers. The thermal aging process also supports the results obtained from TGA.

CHARACTERIZATION OF PHYTOCHEMICALS ISOLATED FROM CUCURBITA PEPO SEEDS USING UV–VIS AND FTIR SPECTROSCOPY