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Thermal properties of conducting polypyrrole nanotubes

SYSNO ASEP	0452281
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Thermal properties of conducting polypyrrole nanotubes
Author(s)	Rudajevová, A. (CZ) Varga, M. (CZ) Prokeš, J. (CZ) Kopecká, J. (CZ) Stejskal, Jaroslav (UMCH-V)_{RID, ORCID, SAI}
Source Title	Acta Physica Polonica A. - : Polska Akademia Nauk - ISSN 0587-4246 Roč. 128, č. 4 (2015), s. 730-736
Number of pages	7 s.
Action	ISPMA 13 - International Symposium on Physics of Materials /13./
Event date	31.08.2014-04.09.2014
VEvent location	Praha
Country	CZ - Czech Republic
Event type	WRD
Language	eng - English
Country	PL - Poland
Keywords	conducting polymer ; polyaniline ; polypyrrole
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	GA13-00270S GA ČR - Czech Science Foundation (CSF)
Institutional support	UMCH-V - RVO:61389013
UT WOS	000366357300064
EID SCOPUS	84950280961
DOI	10.12693/aphyspola.128.730
Annotation	Thermal properties of polypyrrole nanotubes synthesized by the chemical oxidation of pyrrole with iron(III) chloride in the presence of methyl orange as structure-guiding template, have been investigated. As-prepared polypyrrole salt and corresponding base were compressed into pellets. Thermogravimetric analysis has shown that the heating/cooling of both polymers is connected with water desorption/re-absorption. This process influences all temperature dependences of the thermophysical properties. The specific heat of both polypyrrole forms was the same at 35°C. The thermal diffusivity of polypyrrole base was lower than that of the salt. The dilatational characteristics are strongly influenced by water desorption/re-absorption. Water desorption is connected with the contraction of polypyrrole and its re-absorption with the expansion of polypyrrole. The electrical resistivity was measured, in analogy to thermal experiments, by a four-point van der Pauw method. The electrical resistivity was 0.016 and 10.2 Ωcm at room temperature, for both materials. The electrical resistivity was also influenced by water desorption/re-absorption as well as other thermophysical properties.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2016

Number of the records: 1