Dielectric relaxation in polyvinyl alcohol-polypyrrole-multiwall carbon nanotube composites below room temperature

Goutam Chakraborty, Kajal Gupta, Dipak Rana, Ajit Kumar Meikap

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Polyvinyl alcohol-polypyrrole-multiwall carbon nanotube composite polymer films have been synthesized by a chemical oxidative polymerization technique. Dielectric properties have been measured in the frequency range from 20 Hz to 1 MHz and in the temperature range 77<T<300 K. Electric modulus vector analysis gives the presence of dielectric relaxation peaks for different composites from which the activation energies have been calculated.

Original languageEnglish
Article number025005
JournalAdvances in Natural Sciences: Nanoscience and Nanotechnology
Volume4
Issue number2
DOIs
StatePublished - Jun 2013
Externally publishedYes

Keywords

  • Charge transport
  • Dielectric properties
  • Polypyrrole
  • Polyvinyl alcohol
  • VRH theory

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