Abstract
Polyaniline (PANI) is one of the most favorable conducting polymers due to the excellent environmental stability, easily prepared and good electrical properties. The present paper aims to investigate the effect of surfactant and compare the properties of conductive graphene/PANI nanocomposites fabricated using two methods which are in-situ polymerization and solvent blending. Electrical conductivity and field emission scanning electron microscopy (FESEM) were used to characterize the sample. Results showed that graphene/PANI nanocomposites produced by in-situ polymerization method showed higher electrical conductivity compared to that of solvent blending method. In-situ polymerization method exhibits better dispersion of graphene filler and smaller diameter size of PANI fiber. Moreover, addition of surfactant in the graphene/PANI nanocomposites played an important role in improving dispersion of graphene fillers within the PANI nanocomposites. In conclusion, graphene/PANI nanocomposites with surfactant produced by in-situ polymerization method showed the highest electrical conductivity compared to that of in-situ polymerization without surfactant and solvent blending with and without surfactant.
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