Enhanced electrical and dielectric properties of graphite based PVA nanocomposite at low percolation threshold.

Polyvinyl alcohol (PVA) composites with graphite oxide nanoplatelets (GOnP) and pure graphite powder (GP) were prepared via solution casting method. A significant enhancement of electrical conductivity of the GOnP/PVA composites is obtained at low GOnP concentration i.e.; percolation threshold. Interestingly, a much lower percolation threshold (fc =0.41 vol %, the lowest reported value for any graphite oxide-based composites) was obtained for the GOnP/PVA composites compared to the corresponding GP/PVA composites (fc ∼above 6 vol%). [ABSTRACT FROM AUTHOR]