Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 100, Issue 1, Pages 132-137Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2005.12.021
Keywords
low-density polyethylene; multiwalled carbon nanotube; dielectric constant; conductivity
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Low-density polyethylene (LDPE)/multiwalled carbon nanotube (CNT) nanocomposites were prepared via melt compounding. The electrical properties of LDPE/CNT nanocomposites as a function of CNT volume content, frequency and temperature were investigated. The results showed that dielectric constant of LDPE/CNT nanocomposites increases slightly with increasing CNT content up to 1.9 vol. %. Thereafter, the dielectric constant of the nanocomposites increases sharply. The dielectric constant of LDPE/3.6 vol. % CNT nanocomposite is more than two orders of magnitude larger than that of pure LDPE. The frequency dependence of electrical properties of LDPE/3.6 vol.% CNT nanocomposite can be well described by the percolation theory. (c) 2005 Elsevier B.V. All rights reserved.
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