Thermal conductivity of graphene oxide-enhanced polyvinyl alcohol composites depending on molecular interaction

GO/PVA composites are successfully prepared owing to their high compatibility via hydrogen bonds between PVA and GO. The thermal conductivity of PVA depends on its degree of crystallinity. PVA with a lower DP shows a higher degree of crystallinity with molecular interaction between GO and PVA. A phonon conductive path in the thickness direction is formed by silica-bead packing that prevents aggregation of GO.263