ANOMALIES IN THE TEMPERATURE-DEPENDENCE OF THE ELECTRICAL-CONDUCTIVITY OF POLYPYRROLE

Authors
SKAKALOVA V FEDORKO P PLOCHARSKI J
Citation
V. Skakalova et al., ANOMALIES IN THE TEMPERATURE-DEPENDENCE OF THE ELECTRICAL-CONDUCTIVITY OF POLYPYRROLE, Macromolecular chemistry and physics, 195(7), 1994, pp. 2523-2529
Citations number
33
Categorie Soggetti
Polymer Sciences
Journal title
Macromolecular chemistry and physics → ACNP
ISSN journal
10221352
Volume
195
Issue
7
Year of publication
1994
Pages
2523 - 2529
Database
ISI
SICI code
1022-1352(1994)195:7<2523:AITTOT>2.0.ZU;2-S
Abstract
Anomalies in the temperature dependence of the conductivity of BF4- do ped polypyrrole were observed in cyclic measurements at temperatures b etween 250 K and 310 K. The anomalies were accompanied by endothermic effects in differential scanning calorimetry and are interpreted as be ing due to conformational changes (creation and disappearance of confo rmational defects) in the polymer chains. The conformational defects a re supposed to influence the energy and the concentration of bipolaron s and, consequently, the transport in the polymer.