Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 68, Issue 6, Pages 1445-1452Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2007.10.056
Keywords
carbon nanotubes; nanocomposites; electrical property; probabilistic method; modelling
Categories
Ask authors/readers for more resources
This paper reports the effect of nanotube waviness on the electrical conductivity of carbon nanotube-based composites using a percolation model. Wavy nanotubes are approximated by elongated polygons, and the current-carrying backbones of percolation clusters in the composite are identified by the direct electrifying algorithm. The tunneling resistance due to an insulating film of matrix material between crossing nanotubes is considered. Results of Monte Carlo simulations indicate that the electrical conductivity of composites with wavy nanotubes are lower than that of composites with straight nanotubes. The critical exponent of the power-law dependence of electrical conductivity on nanotube concentration decreases with increasing nanotube curl ratio. The conductivity exhibits an inverse power-law dependence on the curl ratio with a critical exponent in the range of 2.2-2.6. (c) 2007 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available