Novel electrical properties of extruded LDPE-GnP filled nanocomposites

This work presents the impact of shear rate variation during extrusion process of nanocomposite of low density polyethylene (LDPE) filled with graphene nanoparticles on its electrical properties. The obtained nanocomposites show, independently of the shear rate used during extrusion, field dependent non-linear behavior of the electric transport, which starts dominating the conduction current at about 20 kV/mm and become stronger with increasing filler content. However, at electric field strength below 20 kV/mm the nanocomposites extruded at higher shear rate exhibit increased level of conduction current as compared to those extruded at lower one.