Abstract
Carbon-polymer composites are being developed for industrial applications including sensing, electromagnetic shielding and electronics among others. In this work, ground Polyaniline emeraldine salt (PAni-ES) and coconut shell charcoal (C) powder were mixed with polyvinyl acetate (PVAc). The resulting mixture was fabricated into sheets using simple casting method. The resulting air-dried PAni-ES/PVAc/C sheets were characterized using SEM for morphological studies. The SEM micrographs of the samples showed that the globular aggregates appear within the surface when PAni-ES is introduced in the sample. Also, visible light spectroscopy shows the variation of compositions of the fabricated samples. Using an impedance analyzer (20 Hz to 20 MHz), it was observed that the conductivities of the sample increase with increasing frequency and polyaniline content. The AC conductivity of the fabricated samples also exhibit universal power law behavior at which the mode of charge transfer happens hopping conduction.
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