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Electrical Percolation in Carbon Nanotube Dispersions: A Mesoscale Modeling and Experimental Study

Published online by Cambridge University Press:  01 February 2011

Sameer Sharad Rahatekar ,
Milo S P Shaffer  and
James A Elliott
Sameer Sharad Rahatekar
Affiliation:
sr347@cam.ac.uk, National Institute of Standards and Technology, Fire Research Division, 100 Bureau Drive, Mail Stop 8665, Gaithersburg, MD, 20899, United States, 301-975-5336
Milo S P Shaffer
Affiliation:
m.shaffer@imperial.ac.uk, Imperial College, London, Department of Chemistry, Imperial College, London, South Kensington, London, N/A, SW7 2AZ, United Kingdom
James A Elliott
Affiliation:
jae1001@cam.ac.uk, University of Cambridge, Materials Science and Metallurgy, Materials Science and Metallurgy, Pembroke Street, Cambridge, CB2 3QZ, United States
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Abstract

This paper describes our current work on electrical percolation in carbon nanotubes filled thermoplastic polymer fibers. The objective of this work is to develop an understanding of how the electrical properties of the nanotube/polymer composites are affected by processing conditions, orientation of nanotubes, and their loading fraction. In the first part of the work, mesoscale modelling of nanotubes was carried out using a dissipative particle dynamics method. The percolation threshold required to achieve an electrically conductive network of nanotubes within in a polymer fibre was predicted as a function of orientation and aspect ratio of nanotubes using a Monte Carlo method to measure the network impedance. In the second part of this work, X-ray diffraction analyses were carried out to find the degree of alignment of nanotubes in polyamide 12 fibers.

Keywords

electrical propertiesnanoscalex-ray diffraction (XRD)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 920: Symposium S – Smart Nanotextiles , 2006 , 0920-S03-04
Copyright
Copyright © Materials Research Society 2006

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