(581d) Polymer Adsorption for Pristine Graphene Dispersions and Nanocomposites

Liquid phase exfoliation and dispersion of graphene, i.e. single-layer graphite, is a critical challenge for bulk processing of graphene-based materials and devices. This is particularly true in the field of nanocomposites where poor dispersion and poor interfacial strength between filler and matrix have been persistent problems. Here we demonstrate the development of novel localized polymer coatings on the graphene surface in solution. Unlike many other liquid-phase processing techniques, these polymer coatings do not disrupt the pristine structure or superior properties of the graphene sheets. Instead, these coatings allow for stable, aggregation-resistant graphene dispersions that are ideal for use in multifunctional graphene-polymer nanocomposites.