Effects of adding different concentrations of block copolymers in epoxy matrix nanocomposites with carbon allotropic nanoparticles

This work investigates the role of different concentrations of a polyester‐polyurethane‐based block copolymer (BCP) on epoxy resin nanocomposites with allotropic carbon nanoparticles (graphene nanoplatelets [GNPs] or carbon nanotubes [CNTs]) on thermal, morphological, and mechanical properties, focusing on fracture toughness and its mechanisms. Amounts of BCP corresponding to 1x, 5x, and 10x the mass of nanoparticles were added. Nanocomposites...