Electrical properties of polyaniline/sulfonated polycarbonate blends

A conducting composite using polyaniline (PANI) as the conducting polymer a nd polycarbonate (PC) as a matrix was prepared by a blending method. Chloro form was used as a solvent in the blending. The PANI was protonated using c amphor sulfonic acid (CSA) or a dodecylbenzene sulfonic acid (DBSA) such as alkylbenzenesulfonic acid. A sulfonic group was introduced into the struct ure of the PC in order to enhance the coulombic interaction between each ph ase of the composite. The effect of ionic groups in sulfonated PC (SPC) was monitored using measurements of both the mechanical and thermal properties . Using the presence of protonating agents and the amount of PANI complex, both the electrical conductivity and morphology were measured. Electrical c onductivity increased to 7.5 S/cm with the amount of PANI complex protonate d with DBSA having a long alkyl chain. (C) 2000 Elsevier Science S.A. All r ights reserved.