Thermally stimulated discharge currents of poly(acrylonitrile-co-acrylic acid)-polypyrrole composites

S. Cetiner, M. Olariu, N. Ugur Kaya, S. Aradoaei

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Thermally Stimulated Discharge Currents, one of the oldest destructive method widely used for studying the mechanisms of polarization and depolarization within the dielectrics was employed for determining information related to trapped and/or detrapped charges and activation energy (Ea) within P(AN-co-AA)-PPy composite films. Two peaks or two relaxation regions could be noticed on the TSDC spectra for each material under test: one at a temperature around 323.15K (50°C), attributed to decomposition due to DMF removal as presented in our previous studies, and a second one at 363.15K (90°C), attributed to glass transition temperature. An increased of detrapped charges was observed when the PPy quantity within the P(AN-co-AA) matrix was increased. The same time, both relaxations appeared at very close temperatures for all three samples under test. Complementary measurements for an in-depth electrical analysis were performed with the help of Broadband Dielectric Spectroscopy (BDS), while further information regarding conductive composites structures was obtained through FTIR-ATR analysis.

Original languageEnglish
Title of host publicationMaterials and Applications for Sensors and Transducers II
EditorsEvangelos Hristoforou, Dimitrios S. Vlachos
Pages154-158
DOIs
Publication statusPublished - 2013
MoE publication typeA4 Article in a conference publication
Event2nd International Conference on Materials and Applications for Sensors and Transducers, IC-MAST 2012 - Budapest, Hungary
Duration: 24 May 201228 May 2012

Publication series

SeriesKey Engineering Materials
Volume543
ISSN1013-9826

Conference

Conference2nd International Conference on Materials and Applications for Sensors and Transducers, IC-MAST 2012
Country/TerritoryHungary
CityBudapest
Period24/05/1228/05/12

Keywords

  • Conductive composite
  • Dielectric properties
  • Thermally stimulated discharge currents

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