Paper Title:
Conductive Polymer Composites Serving as Gas Sensors
  Abstract

The present work synthesized conductive composites consisting of waterborne polyurethane (WPU) and carbon black (CB). Besides the low percolation threshold (0.70.95wt%), the composites are quite sensitive to organic solvent vapors regardless of their polarities as characterized by the drastic changes in conductivity. In the case of polar solvents, negative and positive vapor coefficient phenomena of the composites were successively observed with a rise in CB content. It was found that different mechanisms are responsible for the broad applicability of the composites as candidates for gas sensing materials owing to the different interactions among the matrix polymer, the filler particles and the solvent molecules.

  Info
Periodical
Key Engineering Materials (Volumes 334-335)
Edited by
J.K. Kim, D.Z. Wo, L.M. Zhou, H.T. Huang, K.T. Lau and M. Wang
Pages
561-564
DOI
10.4028/www.scientific.net/KEM.334-335.561
Citation
M. Q. Zhang, M. Z. Rong, S. G. Chen, "Conductive Polymer Composites Serving as Gas Sensors", Key Engineering Materials, Vols. 334-335, pp. 561-564, 2007
Online since
March 2007
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Price
$35.00
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