Electronic conduction in polyaniline-polyethylene oxide and polyaniline-Nafion blends: Relation to morphology and protonation level

Journal Article · Fri Aug 01 04:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.4604· OSTI ID:538544

Sixou, B; Travers, J P ^[1]; Barthet, C; Guglielmi, M ^[2]

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1. Laboratoire de Physique des Metaux synthetiques, Unite Mixte de Recherche 585, Departement de Recherche Fondamentale sur la Matiere, Condensee/Commissariat a lEnergie Atomique, 17 rue des Martyrs, 38054 Grenoble Cedex 9 (France)
2. Laboratoire de Physico-Chimie Moleculaire, Unite Mixte de Recherche 585, Departement de Recherche Fondamentale sur la Matiere, Condensee/Commissariat a lEnergie Atomique, 17 rue des Martyrs, 38054 Grenoble Cedex 9 (France)

We present a comprehensive study of the transport properties in polyaniline-Nafion and polyaniline-polyethylene oxide, lithium trifluoromethane sulfonimide complex blends, together with a careful characterization of the morphology and the polyaniline protonation level. They include conductivity measurements as a function of both the polyaniline content of the blends and the temperature for a given composition. We show that percolation theory can account for the data provided that hopping and tunneling are taken into account. Moreover, in the polyaniline-Nafion blends, the variation of the polyaniline protonation level with the blend composition appears as a crucial parameter. The leading conduction mechanism is shown to be a hopping process between highly conducting polyaniline grains, the parameters of which are determined by the blend composition, and the protonation level. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 538544
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 8 Vol. 56; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANILINE
CHEMICAL COMPOSITION
COMPOSITE MATERIALS
ELECTRIC CONDUCTIVITY
MORPHOLOGY
ORGANIC POLYMERS
ORGANIC SEMICONDUCTORS
POLYETHYLENES