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Dispersions and fibers of carbon nanotubes

Published online by Cambridge University Press:  15 March 2011

Brigitte Vigolo ,
Alain Pénicaud ,
Claude Coulon ,
Cédric Sauder ,
René Pailler ,
Catherine Journet ,
Patrick Bernier  and
Philippe Poulin
Brigitte Vigolo
Affiliation:
Centre de Recherche Paul Pascal / CNRS, Université Bordeaux I, Avenue Schweitzer, 33600 Pessac, France
Alain Pénicaud
Affiliation:
Centre de Recherche Paul Pascal / CNRS, Université Bordeaux I, Avenue Schweitzer, 33600 Pessac, France
Claude Coulon
Affiliation:
Centre de Recherche Paul Pascal / CNRS, Université Bordeaux I, Avenue Schweitzer, 33600 Pessac, France
Cédric Sauder
Affiliation:
-LCTS, Allée de la Boëtie, 33600 Pessac, France
René Pailler
Affiliation:
-LCTS, Allée de la Boëtie, 33600 Pessac, France
Catherine Journet
Affiliation:
-GDPC, Université de Montpellier II, 34095 Montpellier, France
Patrick Bernier
Affiliation:
-GDPC, Université de Montpellier II, 34095 Montpellier, France
Philippe Poulin
Affiliation:
Centre de Recherche Paul Pascal / CNRS, Université Bordeaux I, Avenue Schweitzer, 33600 Pessac, France
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Abstract

We study the phase behavior of single walled carbon nanotubes in aqueous solutions of surfactant molecules or amphiphilic polymers. Homogeneous dispersions can be obtained by using sodium dodecyl sulfate (SDS) in a well-defined concentration range. In contrast, polyvinyl alcohol (PVA) is not efficient at stabilizing the tubes. Carbon nanotubes stick with each other when PVA is added to homogeneous dispersions initially stabilized by SDS. This behavior is the basis of a simple method that we developed to assemble single walled carbon nanotubes into indefinitely long ribbons and fibers. The processing consists of dispersing the nanotubes in SDS solutions, re-condensing the nanotubes in the flow of a PVA solution to form a nanotube mesh, and then collating this mesh to a nanotube fiber. Flow induced alignment may lead to a preferential orientation of the nanotubes in the mesh that has the form of a ribbon. Unlike classical carbon fibers, the nanotube fibers can be strongly bent without breaking. Their obtained elastic modulus is 10 times higher than the modulus of high-quality bucky paper.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 633: Symposium A – Nanotubes and Related Materials , 2000 , A12.1
Copyright
Copyright © Materials Research Society 2001

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