GRAPHENE NANORIBBON-BASED GAS BARRIER COMPOSITES AND METHODS OF MAKING THE SAME

摘要

In some embodiments, the present disclosure pertains to gas barrier composites that include a polymer matrix and graphene nanoribbons dispersed in the polymer matrix. The polymer matrix can include a phase-separated block copolymer with a hard phase domain and a soft phase domain. Likewise, the functionalized graphene nanoribbons can include edge- functionalized graphene nanoribbons with concentrations that range from about 0.1% by weight to about 5% by weight of the gas barrier composites. In some embodiments, the present disclosure pertains to methods of making gas barrier composites by dispersing graphene nanoribbons in a polymer matrix. In some embodiments, the dispersing lowers the permeability of a gas through the gas barrier composite and causes phase separation of block copolymers in the polymer matrix. In some embodiments, the dispersion of graphene nanoribbons in the polymer matrix lowers the gas effective diffusivity of the gas barrier composite by three orders of magnitude.