Electrical conductivity recovery in carbon nanotube-polymer composites after transient shear

  • Alig I
  • Skipa T
  • Engel M
 et al. 
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Investigations on electric conductivity have been performed on polycarbonate (PC) containing 0.6 vol% of multi-walled carbon nanotubes (MWNT) in a rheometer, where the plates act as capacitor plates for dielectric spectroscopy. The time dependent recovery of the DC-conductivity was recorded in the rest time after a transient shear deformation. The DC-conductivity shows a tremendous increase with the time after shearing. This conductivity recovery is explained by the reorganization of the conducting MWNT-network, which was destroyed by the shear. The reformation kinetics of MWNT-clusters is considered as a cooperative cluster-cluster aggregation coupled to electrical percolation of conductive MWNT.

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  • I. Alig

  • T. Skipa

  • M. Engel

  • D. Lellinger

  • S. Pegel

  • P. Pötschke

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