Effect of gamma-ray MWCNTs on electrical conductivity of a PET/graphite composite

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The effects of a compounding method and gamma-ray treated multiwall carbon nanotubes (MWCNTs) on the electrical conductivity of graphite/PET composites were investigated. We found that dispersion of MWCNTs in the PET phase plays a critical role in determining the electrical conductivity of graphite/PET/MWCNT composites. Dispersion and electrical conductivity were enhanced by a two-step method in which PET and MWCNTs are compounded in advance and the MWCNT/PET mixture is then compounded again with graphite. It was also observed that gamma-ray treated MWCNTs provide enhanced conductivity in the graphite/PET/MWCNT composite. The synergetic effect of the two-step mixing method and gamma-ray treatment made it possible to increase the conductivity of graphite/PET composites to a great extent with a very small amount of gamma-ray irradiated MWCNTs. (C) 2011 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2012-01
Language
English
Article Type
Article
Keywords

WALLED CARBON NANOTUBES; BIPOLAR PLATES; FUEL-CELLS; CHEMICAL-MODIFICATION; NANOCOMPOSITES

Citation

MATERIALS LETTERS, v.67, no.1, pp.219 - 221

ISSN
0167-577X
DOI
10.1016/j.matlet.2011.09.061
URI
http://hdl.handle.net/10203/100224
Appears in Collection
CBE-Journal Papers(저널논문)
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