Počet záznamů: 1
The influence of compression pressure on transport properties of polyaniline
0358506 - UMCH-V 2012 RIV GB eng J - Článek v odborném periodiku
Prokeš, J. - Varga, M. - Křivka, I. - Rudajevová, A. - Stejskal, Jaroslav
The influence of compression pressure on transport properties of polyaniline.
Journal of Materials Chemistry. Roč. 21, č. 13 (2011), s. 5038-5045 ISSN 0959-9428
Výzkumný záměr: CEZ:AV0Z40500505
Klíčová slova: conducting polymer * polyaniline * conductivity
Kód oboru RIV: CD - Makromolekulární chemie
Impakt faktor: 5.968, rok: 2011
The transport of charge carriers and the thermal diffusivity were studied on a set of polyaniline (emeraldine) samples that were compressed at various pressures, 50–1000 MPa. Marked correlations between the plots of compression pressure dependence of the electrical resistivity, the thermal diffusivity and the sample density were observed. This study has demonstrated that in order to obtain comparable data on samples prepared by compression of polymeric powders it is necessary to use sufficiently high pressure. In the case of polyaniline powder, the pressure should be higher than 400 MPa. The values of the thermal diffusivity measured on polyaniline salt and its respective base indicate that charge carriers are not dominant in a heat-transport mechanism; only less than ten per cent of the thermal diffusion in pressed polyaniline samples can be eventually attributed to charge carriers.
Trvalý link: http://hdl.handle.net/11104/0006399