Electric field induced conductive network formation of MWNTs and MWNTs-COOH in polycarbonate composites

► The conductive network formation by electric field in both the PC/MWNTs and PC/MWNTs-COOH composites were investigated by the dynamic percolation measurement. ► At the percolation time and the formation activation energy of conductive network for MWNTs filled composites decreased greatly as compared to those of the MWNTs-COOH filled composites. ► The dynamic percolation measurement method could be recommended to investigate the zero-shear-rate viscosity at the different temperatures.