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Thermal properties of conducting polypyrrole nanotubes
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SYSNO ASEP 0452281 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Thermal properties of conducting polypyrrole nanotubes Tvůrce(i) Rudajevová, A. (CZ)
Varga, M. (CZ)
Prokeš, J. (CZ)
Kopecká, J. (CZ)
Stejskal, Jaroslav (UMCH-V) RID, ORCID, SAIZdroj.dok. Acta Physica Polonica A. - : Polska Akademia Nauk - ISSN 0587-4246
Roč. 128, č. 4 (2015), s. 730-736Poč.str. 7 s. Akce ISPMA 13 - International Symposium on Physics of Materials /13./ Datum konání 31.08.2014-04.09.2014 Místo konání Praha Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. PL - Polsko Klíč. slova conducting polymer ; polyaniline ; polypyrrole Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEP GA13-00270S GA ČR - Grantová agentura ČR Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000366357300064 EID SCOPUS 84950280961 DOI 10.12693/aphyspola.128.730 Anotace 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. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2016
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