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Glass Transition Temperature Depression at the Percolation Threshold in Carbon Nanotube-Epoxy Resin and Polypyrrole-Epoxy Resin Composites

Barrau, Sophie and Demont, Philippe and Maraval, Céline and Bernès, Alain and Lacabanne, Colette Glass Transition Temperature Depression at the Percolation Threshold in Carbon Nanotube-Epoxy Resin and Polypyrrole-Epoxy Resin Composites. (2005) Macromolecular Rapid Communications, vol. 2 (n°5). pp. 390-394. ISSN 1022-1336

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Official URL: http://dx.doi.org/10.1002/marc.200400515

Abstract

The glass transition temperatures of conducting composites, obtained by blending carbon nanotubes (CNTs) or polypyrrole (PPy) particles with epoxy resin, were investigated by using both differential scanning calorimetry (DSC) and dynamical mechanical thermal analysis (DMTA). For both composites, dc and ac conductivity measurements revealed an electrical percolation threshold at which the glass transition temperature and mechanical modulus of the composites pass through a minimum.

Item Type:Article
Additional Information:Macromolecular Rapid Communications http://www.wiley-vch.de/publish/en/journals/alphabeticIndex/2263/
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Thomas Bonnecarere

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