Extrinsic Wrinkling and Single Exfoliated Sheets of Graphene Oxide in Polymer Composites

摘要: We study the conformation of graphene oxide as filler in nanocomposites polystyrene and poly(methyl methacrylate) using inverse-space scattering techniques atomic force microscopy. By subtracting polymer to estimate contribution from oxide, we discover surface fractal that spans a range more than two decades reciprocal space, indicating within these materials is rough on very wide length scales implying extensive extrinsic wrinkling folding. well-exfoliated, locally flat sheets produce crossover at scale 16 nm, which becomes dominated by signature mass thin disks or sheets. show local structure polymer–graphene identical water solution studied same scale. Our results confirm presence wel...