Mack et al. (2005) prepared nanocomposites of polyacrylonitrile (PAN) nanofibers strengthened by GNP, which they demonstrated to have improved mechanical qualities [109]. Research by Hansma et al. (2007) showed successful fabrication of graphene-based nanocomposites. They successfully optimized the amount and combination of adhesives and high-strength nanostructures (graphene) needed to yield a strong, low-density, lightweight, and damage resistant composite material [110].