Paper Title:
Fabrication of Carbon Nanotube/Low Density Polyethylene Composites for Strain Sensing
  Abstract

Carbon Nanotubes (CNTs) have shown remarkable electrical, piezoresistive properties as well as other physical properties. The aim of this study is to investigate the potential of CNT-polymer composites in strain sensing using low density polyethylene (LDPE) polymer. Different CNT loadings were used (0, 1, 2, 3.5, 5, 6.5 and 8 weight %). CNT/LDPE composite films of 1mm thickness were fabricated using compression molding. The electrical resistance at no load condition was measured and the percolation behavior was obtained. The percolation threshold was found to be in the range of (2-5) wt%, where a decrease in resistivity by 5 orders of magnitude was observed. The sensitivity (gauge factor – GF) of the films was evaluated by correlating the strain applied with the simultaneously measured resistance. For a strain range of up to 320 µε, a gauge factor of 200 was achieved at a CNT loading of 5 wt%.

  Info
Periodical
Edited by
E. Hristoforou and D.S. Vlachos
Pages
33-36
DOI
10.4028/www.scientific.net/KEM.495.33
Citation
R. R. A. Chafy, M. H. Arafa, A. M. K. Esawi, "Fabrication of Carbon Nanotube/Low Density Polyethylene Composites for Strain Sensing", Key Engineering Materials, Vol. 495, pp. 33-36, 2012
Online since
November 2011
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$32.00
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