Premium
Transport properties in polypyrrole–PVA composites: Evidence for hopping conduction
Author(s) -
Makhlouki Mohamed,
Morsli Mustapha,
Bonnet Alain,
Conan Alain,
Pron Adam,
Lefrant Serge
Publication year - 1992
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1992.070440309
Subject(s) - polypyrrole , materials science , thermal conduction , composite material , electrical resistivity and conductivity , percolation (cognitive psychology) , seebeck coefficient , doping , percolation threshold , percolation theory , quantum tunnelling , variable range hopping , thermoelectric effect , conductivity , electrical conductor , polyvinyl alcohol , polymer , thermal conductivity , chemistry , electrical engineering , optoelectronics , thermodynamics , physics , neuroscience , engineering , polymerization , biology
Experimental results on electrical conductivity and thermoelectric power for FeCl 3 ‐doped polyvinyl alcohol‐polypyrrole composites, with polypyrrole content exceeding the percolation threshold, are presented. The electrical conductivity is analyzed in terms of the hopping theory, whereas the thermoelectric power displays a metallic‐like dependence. A model involving both the intrinsic resistance of the fibrils (V.R.H. hopping mechanisms) and the resistance of the junctions between fibrils (fluctuations‐induced tunneling conduction) has been retained.