High Thermal conductive BBL/Graphene Nanocomposite System

摘要

From this study, we found that the graphene oxides (GOs) and reduced GOs(rGOs) were well dispersed in BBL due to the interactions between delocalized a electrons in both poly(benzimidazoben zophenanthroline) (BBL) and the carbon sheets of the graphene so that the electrical-conductivity levels of the composites were proportional to those of their fillers of the rGOs; aggregations between the rGOs in BBLwould cause the poor electrical conductivity and deviation from the linear relationship of the electrical conductivity between the filler and the composite. The thermal reduction after dispersing GOs in BBL wasalso possible due to the high thermal degradation temperature of BBL (> 600C); the electrical conductivity of the GO/BBL composite increased approx. 4 orders by annealing at 500C for 30 minutes. Thus, we found that the chemically-reduced GOs was applicable to the rGO/BBL nanocomposite system and the post-heat treatment of the GO/BBL compositewas also effective to impart good electrical conductivity to BBL.