Thermally stimulated discharging current spectra of poly(p-phenylene) polymer

Author

Wang, M.-S.E. ; Campos, M. ; Li, M. Siu ; Oliveira, L.

Author_Institution

Univ. de Sao Paulo, Sao Carlos, SP, Brazil

fYear

1993

fDate

17-20 Oct 1993

Firstpage

245

Lastpage

250

Abstract

The authors report a set of thermally stimulated discharging current (TSDC) spectra of undoped poly(p-phenylene) (PPP) polymer over the temperature range of 4 to 500°K. At heating rates of 2 and 3.5 °C/min, five TSDC peaks were observed at around 136, 159, 245, 290, and 343 °K, respectively. As the first stage of the TSDC study of doping effect on conducting polymers, the authors present the TSDC spectrum of a low-level FeCl₃-doped PPP polymer. It was found that doping caused a fivefold increase in the 245 °K TSDC peak whereas DC conductivity was increased by nearly 6 orders of magnitude, i.e., from 10^-14 to 10^-8 S/cm, by doping. The differential scanning calorimetry spectrum of PPP is also presented

Keywords

conducting polymers; organic insulating materials; thermal analysis; thermally stimulated currents; 4 to 500 K; DC conductivity; TSDC peaks; conducting polymers; differential scanning calorimetry spectrum; doping effect; low-level FeCl₃-doped PPP polymer; poly(p-phenylene) polymer; thermally stimulated discharging current; Atmosphere; Atmospheric measurements; Conductivity measurement; Doping; Heating; Polymers; Powders; Size measurement; Temperature distribution; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1993. Annual Report., Conference on

Conference_Location

Pocono Manor, PA

Print_ISBN

0-7803-0966-9

Type

conf

DOI

10.1109/CEIDP.1993.378965

Filename

378965