Influence of GNPs debonding on mode I fracture toughness of polymeric nanocomposites

One of the most attractive topics related to the modification of polymer nanocomposites is to improve thefracture toughness even at low nanofiller volume fractions. It was proved in the literature that occurring some damagemechanisms at the nanoscale are related to this improvement. Meanwhile, nanoparticle debonding can play an importantrole either as its own mechanism or as a trigger for the other damage mechanisms. Hence, in the present work, thedebonding of graphene nanoplates (GNPs) from the surrounding matrix was investigated theoretically. A multiscalemodel was developed in order to model the GNPs debonding mechanism. Therefore, a representative volume elementcontaining a graphene nanoplatelet, its surrounding resin, and the interphase was selected. The effect of differentvariables on the mode I fracture toughness of GNPs-reinforced composites were evaluated.

کلیدواژه ها:

Graphene nanoplates ، nanocomposites ، fracture toughness ، debonding ، multiscale modeling