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Temperature dependence of thermal conductivity enhancement in single-walled carbon nanotube/polystyrene composites

Source: Appl. Phys. Lett. 96, 083105 (2010); doi:10.1063/1.3323095

Published 23 February 2010

EPAPS
KEYWORDS and PACS
Keywords
PACS
  • 66.70.-f
    Nonelectronic thermal conduction and heat-pulse propagation in solids
  • 72.80.Sk
    Electrical conductivity of insulators
  • YEAR: 2010
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PUBLICATION DATA
ISSN:
1553-9644 (online)
Publisher:
AIP is a member of CrossRef AIP
Michael B. Jakubinek,1 Mary Anne White,1 Minfang Mu,2 and Karen I. Winey2
1Departments of Physics and Chemistry, and Institute for Research in Materials, Dalhousie University, Halifax, Nova Scotia B3H 4J3, Canada
2Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-672, USA
The thermal conductivity of single-walled carbon nanotube (SWCNT)/polystyrene composites, prepared by a method known to produce a uniform distribution of SWCNT bundles on the micrometer length scale, was measured in the temperature range from approximately 140 to 360 K. The thermal conductivity enhancement (50% for 1 mass % at 300 K) is reasonably constant above room temperature but is reduced at the lower temperatures. This result is consistent with the expected, large contribution of interfacial thermal resistance in SWCNT/polymer composites. Enhancements in electrical conductivity show that 1 mass % loading is in the region of the electrical percolation threshold. ©2010 American Institute of Physics
History: Received 22 September 2009; accepted 21 January 2010; published 23 February 2010
Permalink: http://link.aip.org/link/?APPLAB/96/083105/1

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