Počet záznamů: 1

The influence of compression pressure on transport properties of polyaniline

  1. 1.
    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