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Raman spectroscopy and conductivity measurements on polymer-multiwalled carbon nanotubes composites

Published online by Cambridge University Press:  31 January 2011

Christophe Stéphan ,
Thien Phap Nguyen ,
Bernd Lahr ,
Werner Blau ,
Serge Lefrant  and
Olivier Chauvet
Christophe Stéphan
Affiliation:
Laboratoire de Physique Cristalline, Institut des Matériaux Jean Rouxel, BP 32229, 44322 Nantes cedex 3, France
Thien Phap Nguyen
Affiliation:
Laboratoire de Physique Cristalline, Institut des Matériaux Jean Rouxel, BP 32229, 44322 Nantes cedex 3, France
Bernd Lahr
Affiliation:
Department of Physics, Trinity College, Dublin 2, Ireland
Werner Blau
Affiliation:
Department of Physics, Trinity College, Dublin 2, Ireland
Serge Lefrant*
Affiliation:
Laboratoire de Physique Cristalline, Institut des Matériaux Jean Rouxel, BP 32229, 44322 Nantes cedex 3, France
Olivier Chauvet
Affiliation:
Laboratoire de Physique Cristalline, Institut des Matériaux Jean Rouxel, BP 32229, 44322 Nantes cedex 3, France
*
a) Address all correspondence to this author. e-mail: serge.lefrant@cnrs-imn.fr
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Abstract

Thin films of poly(methyl methacrylate)–multiwalled nanotubes composites were produced by spin coating using different nanotube concentrations. The materials were characterized by scanning electron microscopy, energy-dispersive x-ray analysis, and Raman spectroscopy to obtain information on the possible interactions between the constituents and to control the homogeneity of the films. Electrical conductivity measurements of the composites, as a function of the nanotube concentration, show a percolation threshold at very low concentration. Also, the J–E characteristics exhibits a nonlinear behavior at low concentration, becoming linear far above the threshold.

Type
Articles
Information
Journal of Materials Research , Volume 17 , Issue 2 , February 2002 , pp. 396 - 400
Copyright
Copyright © Materials Research Society 2002

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