Electrical Study of Ultra High Molecular Weight Polyethylene∕Multi wall Carbon Nanotubes (UHMWPE∕MWCNT) Nanocomposite

摘要

This paper presents the potential of the CNTs as nanofillers in polymers. Ultra high molecular weight polyethylene (UHMWPE) is taken as a polymer and multiwall carbon nanotubes (MWCNT) are taken as nanofillers. The films of pure UHMWPE, 0.1% CNT‐UHMWPE, 0.25% CNT‐UHMWPE are prepared by hot drawing method. The dominating effects of manufacturing root (sonication, magnetic stirring and annealing) influencing the resulting degree of dispersion and interfacial adhesions are intensively investigated by scanning electron microscopy (SEM). Electrical properties of these films are investigated at different temperatures and fixed voltage. Frequency dependent capacitance and conductance of the samples has been taken at different temperatures. The capacitance of films decrease with increase in the frequency but at very high frequency value of capacitance becomes constant. The value of conductance increases with increase in the content of MWCNT in the Nanocomposite film. The Current‐Voltage (C‐V) characteristics has been measured which shows nearly linear dependence at low voltages.