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Characterizations of enriched metallic single-walled carbon nanotubes in polymer composite

Published online by Cambridge University Press:  01 February 2011

Bin Chen ,
Jing Li ,
Yijiang Lu ,
Martin Cinke ,
Dyng Au ,
Julie P. Harmon ,
Patrici Anne O. Muisener  and
LaNetra Clayton
Bin Chen
Affiliation:
NASA Ames Research Center, MS 245–3, Moffett Field, CA 94035 Email: bchen@mail.arc.nasa.gov
Jing Li
Affiliation:
NASA Ames Research Center, MS 245–3, Moffett Field, CA 94035 Email: bchen@mail.arc.nasa.gov
Yijiang Lu
Affiliation:
NASA Ames Research Center, MS 245–3, Moffett Field, CA 94035 Email: bchen@mail.arc.nasa.gov
Martin Cinke
Affiliation:
NASA Ames Research Center, MS 245–3, Moffett Field, CA 94035 Email: bchen@mail.arc.nasa.gov
Dyng Au
Affiliation:
NASA Ames Research Center, MS 245–3, Moffett Field, CA 94035 Email: bchen@mail.arc.nasa.gov
Julie P. Harmon
Affiliation:
Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Fl 33620 Email: bchen@mail.arc.nasa.gov
Patrici Anne O. Muisener
Affiliation:
Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Fl 33620 Email: bchen@mail.arc.nasa.gov
LaNetra Clayton
Affiliation:
Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Fl 33620 Email: bchen@mail.arc.nasa.gov
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Abstract

We characterize the electric properties of single-walled carbon nanotube (SWNT) dispersed in the polymethyl methacrylate (PMMA) composites. In the melt-blended sample, the SWNTs – originally semiconducting – became predominantly metallic. The interaction of the PMMA and SWNT is investigated by the polarized Raman studies. The structure changes in the PMMA and SWNT shows that the anisotropic interactions play important role in SWNT electronic density of states (DOS) changes. The increased metallic SWNT percentage is confirmed by the conductivity and dielectric constant measurements of composite and neat PMMA.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 856: Symposium BB – Multicomponent Polymer Systems-Phase Behavior, Dynamics, and Applications , 2004 , BB4.10
Copyright
Copyright © Materials Research Society 2005

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