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Highly dispersed and electrically conductive polycarbonate/oxidized carbon nanofiber composites for electrostatic dissipation applications
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Kumar, Sandeep, Lively, B., Sun, L.L., Li, B. and Zhong, W.H. (2010) Highly dispersed and electrically conductive polycarbonate/oxidized carbon nanofiber composites for electrostatic dissipation applications. Carbon, 48 (13). pp. 3846-3857. doi:10.1016/j.carbon.2010.06.050 ISSN 0008-6223.
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Official URL: http://dx.doi.org/10.1016/j.carbon.2010.06.050
Abstract
The influence of low cost, commercially oxidized carbon nanofibers (ox-CNFs) on the morphological, thermal, mechanical and electrical properties of polycarbonate (PC) composites was examined. Using a simple solution mixing process leads to good dispersion and high packing density of CNFs in the resultant composites. The composite materials exhibit a dramatic improvement in the DC conductivity; for example, increasing from 2.36 × 10−14 S/m for PC to ca. 10−2 S/m for the composite at only 3.0 wt.% of CNFs, and exhibits a very fast static charge dissipation rate. Dynamic mechanical analysis showed a remarkable increase in storage modulus (282%) at 165 °C, compared to pure PC. Thermogravimetric analysis showed that thermal stability of the composites increased by 54 °C compared to the pure PC. To our knowledge, the measured electrical conductivity and thermal properties for PC/CNF are the highest values yet reported for PC/CNF composites at comparable loadings. The AC/DC conductivity is shown to play an important role to predict the state of dispersion.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Journal or Publication Title: | Carbon | ||||||||
Publisher: | Elsevier | ||||||||
ISSN: | 0008-6223 | ||||||||
Official Date: | November 2010 | ||||||||
Dates: |
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Volume: | 48 | ||||||||
Number: | 13 | ||||||||
Page Range: | pp. 3846-3857 | ||||||||
DOI: | 10.1016/j.carbon.2010.06.050 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access |
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