Study of Temperature Dependent Electrical Conductivity and Dielectric Properties of PPY/SWCNT/PVA Composites

Author:
PRAGYESH AGRAWALa and PRIYANKA PARMAR*
Affiliation:
Keyword:
Polypyrrole; Single wall carbon nanotubes; Polyvinyl alcohol; conducting polymer; electrical conductivity; dielectric constant.
Issue Date:
December 2013
Abstract:

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.

Pages:
ISSN:
2319-8052 (Online) - 2231-3478 (Print)
Source:
DOI:
Share This:
Facebook Twitter Google Plus LinkedIn Reddit

Copy the following to cite this article:

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 , 2016

Copy 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 , 2016

Available from: http://www.ultraphysicalsciences.org/paper/180/

Ansari Education And Research Society
Facebook Google Plus Twitter
Website developed by