Electrical properties of polyvinylidene fluoride (PVDF)/multi-walled carbon nanotube (MWCNT) semi-transparent composites: Modelling of DC conductivity

Transparent conductive composites can be achieved from PVDF-MWCNT at very low concentration of MWCNT. These composites show different degree of UV-Visible radiation absorption depending on MWCNT concentration in composites. The composition dependent dielectric properties and AC conductivity were also measured for these composites. Properties like AC conductivity, dielectric constant and loss are increasing with filler concentration. The variations of DC conductivity against composition and temperature are also reported. The electrical hysteresis and electrical set are observed for PVDF-MWCNT composites when subjected to heating-cooling cycle. The validity of different theoretical models depicting percolation threshold with respect to DC conductivity was tested for these composites.