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Analysis of Carbon Nanotube Pull-out from a Polymer Matrix*

Published online by Cambridge University Press:  01 February 2011

S. J. V. Frankland
Affiliation:
ICASE, M/S 132C NASA Langley Research Center Hampton, VA 23681-2199
V. M. Harik
Affiliation:
ICASE, M/S 132C NASA Langley Research Center Hampton, VA 23681-2199
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Abstract

Molecular dynamics (MD) simulations of carbon nanotube (NT) pull-out from a polymer matrix are carried out. As the NT pull-out develops in the simulation, variations in the displacement and velocities of the NT are monitored. The existence of a carbon-ring-based period in NT sliding during pull-out is identified. Linear trends in the NT velocity-force relation are observed and used to estimate an effective viscosity coefficient for interfacial sliding at the NT/polymer interface. As a result, the entire process of NT pull-out is characterized by an interfacial friction model that is based on a critical pull-out force, and an analog of Newton's friction law used to describe the NT/polymer interfacial sliding.

Type
Research Article
Copyright
Copyright © Materials Research Society 2002

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