A comparison between physical properties of carbon black-polymer and carbon nanotubes-polymer composites

Multiple-walled carbon nanotube (CNT)-and carbon black (CB)-polymer composites are prepared by mechanical mixing with different loadings, the polymeric matrix being identical between the two series of samples, and their physical properties are measured. The results have shown that the effective permittivity spectrum of the CNT-polymer samples and their CB-based counterparts is not very sensitive to the applied stress in the range of elongation ratios.