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Bifunctional polyamines for the aqueous dispersion of carbon nanotubes and the formation of carbon nanotube-impregnated hydrogel composites

Published online by Cambridge University Press:  31 August 2011

Michael J. Moehlenbrock ,
Matthew T. Meredith  and
Shelley D. Minteer
Michael J. Moehlenbrock
Affiliation:
Department of Chemistry, Saint Louis University, St. Louis, Missouri 63103
Matthew T. Meredith
Affiliation:
Department of Chemistry, Saint Louis University, St. Louis, Missouri 63103 Departments of Chemistry and Materials Science and Engineering, University of Utah, Salt Lake City, Utah 84112
Shelley D. Minteer*
Affiliation:
Department of Chemistry, Saint Louis University, St. Louis, Missouri 63103 Departments of Chemistry and Materials Science and Engineering, University of Utah, Salt Lake City, Utah 84112
*
Address all correspondence to Shelley D. Minteer at [email protected]
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Abstract

The extraordinary electronic, thermal, and mechanical properties of carbon nanotubes (CNTs) make them attractive materials for incorporation into polymer films. However, retaining these outstanding properties of CNTs during processing can be difficult due to the attractive forces that cause the nanotubes to bundle together. In this study, six different hydrophobically modified linear poly(ethylenimine) (LPEI) polymers are evaluated and effectively used as aqueous nanotube dispersants. This study also shows that the polymers are bifunctional in nature as aqueous polymer/nanotube mixtures can be cross-linked into CNT-impregnated hydrogels.

Type
Rapid Communications
Information
MRS Communications , Volume 1 , Issue 1 , November 2011 , pp. 37 - 40
Copyright
Copyright © Materials Research Society 2011

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