Synthesis and characterization of conducting composites of polyaniline and carbon black with high thermal stability

in this work, a detailed chemical route to prepare thermally stable polyaniline (pani)/carbon black (cb) composites is described. the syntheses were performed by chemical polymerization of aniline over cb particles, using different pani/cb mass ratios. the thermal and electrical properties were characterized. composites with mass ratio up to 65:35 (pani:cb) showed excellent thermal stability maintaining their conducting properties when thermally treated at 230 °c for two hours, which is adequate to process these materials. moreover, the results showed an important reduction in the surface area of the composites which have a good relationship with the improvement of the rheological properties in melt processing.