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Madou, Mark
BIO-MEMS Lab
Research Interests
  • Medical Diagnostics
  • Micro-Battery Development
  • Drug Delivery Systems

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Improved graphitization and electrical conductivity of suspended carbon nanofibers derived from carbon nanotube/polyacrylonitrile composites by directed electrospinning

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Title
Improved graphitization and electrical conductivity of suspended carbon nanofibers derived from carbon nanotube/polyacrylonitrile composites by directed electrospinning
Author
Maitra, TanmoySharma, SwatiSrivastava, AlokCho, Yoon-KyoungMadou, MarcSharma, Ashutosh
Issue Date
2012-04
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CARBON, v.50, no.5, pp.1753 - 1761
Abstract
Single suspended carbon nanofibers on carbon micro-structures were fabricated by directed electrospinning and subsequent pyrolysis at 900 degrees C of carbon nanotube/polyacrylonitrile (CNT/PAN) composite material. The electrical conductivity of the nanofibers was measured at different weight fractions of CNTs. It was found that the conductivity increased almost two orders of magnitude upon adding 0.5 wt.% CNTs. The correlation between the extent of graphitization and electrical properties of the composite nanofiber was examined by various structural characterization techniques, and the presence of graphitic regions in pyrolyzed CNT/PAN nanofibers was observed that were not present in pure PAN-derived carbon. The influence of fabrication technique on the ordering of carbon sheets in electrospun nanofibers was examined and a templating effect by CNTs that leads to enhanced graphitization is suggested.
URI
https://scholarworks.unist.ac.kr/handle/201301/3196
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84856726394
DOI
10.1016/j.carbon.2011.12.021
ISSN
0008-6223
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BME_Journal Papers
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