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Proceedings Paper

Electric field alignment of single wall carbon nanotubes (SWNT) in polymers
Author(s): Sumanth Banda; Zoubeida Ounaies; Tyler St Clair; Jared Rud; Kristin Burney; Gary Bowlin; Cheol Park; Joycelyn Harrison
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Paper Abstract

Electrospinning of a SWNT-polyimide composite is accomplished under DC electric field. The resulting composite fibers are characterized to assess the alignment of the SWNTs in the polyimide. Polarized Raman spectroscopy is performed using a Nicolet dispersive Raman spectrometer with a polarizer. The Raman spectrum of SWNT-polyimide fibers is recorded at several angles between the SWNT axis and the incident polarization, in the range of 0° to 180°. The Raman peak in each spectrum corresponds to the tangential mode (1590 cm-1) of the SWNT in the composite. Inspection of the spectra reveals that the maximum intensity is obtained when the polarization of incident radiation is parallel to the SWNT axis, while the smallest intensity is obtained when the polarization of incident radiation is perpendicular to the SWNT axis. Difference in the intensities when the radiation is parallel and perpendicular to the SWNT axis indicates preferential alignment of SWNTs in the polyimide fibers.

Paper Details

Date Published: 16 May 2005
PDF: 11 pages
Proc. SPIE 5761, Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics, (16 May 2005); doi: 10.1117/12.600353
Show Author Affiliations
Sumanth Banda, Texas A&M Univ. (United States)
Zoubeida Ounaies, Texas A&M Univ. (United States)
Tyler St Clair, Univ. of Mary Washington (United States)
Jared Rud, Virginia Commonwealth Univ. (United States)
Kristin Burney, Virginia Commonwealth Univ. (United States)
Gary Bowlin, Virginia Commonwealth Univ. (United States)
Cheol Park, National Institute of Aerospace (United States)
Joycelyn Harrison, NASA Langley Research Ctr. (United States)


Published in SPIE Proceedings Vol. 5761:
Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics
William D. Armstrong, Editor(s)

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