The effect of temperature on the DC and AC electrical conductivities of pure PPy and PPy/SWCNT as well as PPy/SWCNT/PVA composites has been discussed in this paper. The activation energies for these materials have been calculated using Arrhenius equation. The values of activation energies for pure PPy, PPy/SWCNT and PPy/ SWCNT/PVA are found to be 1.83 eV, 3.166 eV and 6.6 eV, respectively. The increment of conductivity with temperature has been explained on the basis of reduction of energy band gap and hopping of charge carriers. PPy, PPy/SWCNT and PPy/SWCNT/PVA are found to exhibit larger dielectric constants than pure PVA. The enhanced dielectric constant of the composites has been correlated with the increase of molecular ordering due to addition of carbon nanotubes.
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PRAGYESH AGRAWALa and PRIYANKA PARMAR*, "Study of Temperature Dependent Electrical Conductivity and Dielectric Properties of PPY/SWCNT/PVA Composites", Journal of Ultra Scientist of Physical Sciences, Volume 25, Issue 3, Page Number , 2016Copy the following to cite this URL:
PRAGYESH AGRAWALa and PRIYANKA PARMAR*, "Study of Temperature Dependent Electrical Conductivity and Dielectric Properties of PPY/SWCNT/PVA Composites", Journal of Ultra Scientist of Physical Sciences, Volume 25, Issue 3, Page Number , 2016Available from: http://www.ultraphysicalsciences.org/paper/180/