Dispersion behaviour, thermal and electrical conductivities of carbon nanotube-polystyrene nanocomposites

Y. Yang; M.C. Gupta; J.N. Zalameda; W.P. Winfree

Dispersion behaviour, thermal and electrical conductivities of carbon nanotube-polystyrene nanocomposites

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Dispersion behaviour, thermal and electrical conductivities of carbon nanotube-polystyrene nanocomposites

Author(s): Y. Yang ; M.C. Gupta ; J.N. Zalameda ; W.P. Winfree
DOI: 10.1049/mnl:20070073

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Author(s): Y. Yang ¹ ; M.C. Gupta ¹ ; J.N. Zalameda ² ; W.P. Winfree ³
- Affiliations: 1: The Charles L. Brown Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, USA
  2: US Army Research Laboratory, Nondestructive Evaluation Sciences Branch, NASA Langley Research Center, Hampton, USA
  3: Nondestructive Evaluation Sciences Branch, NASA Langley Research Center, Hampton, USA
Source: Volume 3, Issue 2, June 2008, p. 35 – 40
DOI: 10.1049/mnl:20070073 , Online ISSN 1750-0443

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The dispersion behaviour, thermal and electrical conductivities of carbon nanotube-polystyrene nanocomposites were investigated. The dispersion of carbon nanotubes (CNTs) in the nanocomposites was characterised by scanning electron microscope; it was observed that CNTs were homogeneously dispersed and embedded within the polystyrene matrix. The thermal conductivity of the nanocomposites were measured with a through transmission thermal inspection system at room temperature. The results showed that the thermal conductivity increased with an increase in CNT content, and the nanocomposite loaded 5 wt% CNTs exhibited a 120% enhancement in thermal conductivity. The correlation between the dispersion behaviour and thermal and electrical conductivities was discussed. In addition, it was demonstrated that CNT-polymer nanocomposites give larger increases in thermal and electrical conductivities for the same loading of carbon nanofibres, graphite powders and silver nanoparticles.

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Dispersion behaviour, thermal and electrical conductivities of carbon nanotube-polystyrene nanocomposites

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