# DIELECTRIC PROPERTIES OF COMPOSITES OF MULTI-WALLED CARBON NANOTUBES IN A RESIN MATRIX

> Title: DIELECTRIC PROPERTIES OF COMPOSITES OF MULTI-WALLED CARBON NANOTUBES IN A RESIN MATRIX Page Range: p.171-178 Author(s): Allaoui A; Bai J B; Rieux N File size: 130K Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Polymers and Polymer Composites Issue...

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Published: 2003-03-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: DIELECTRIC PROPERTIES OF COMPOSITES OF MULTI-WALLED CARBON NANOTUBES IN A RESIN MATRIX**
 Page Range: p.171-178
 Author(s): Allaoui A; Bai J B; Rieux N
 File size: 130K
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc11-3&JournalID=100070&JIP=) (subscribers only)
 ![](http://handbuy.gif) Buy the pdf (non-subscribers)
 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 11
 Issue No: No. 3

**Abstract**
 The dielectric properties of a multi-walled carbon nanotube (MWNT)/epoxy composite are studied by impedance spectroscopy. Results showed that the addition of a small amount of MWNT increases the permittivity of the resin by many orders of magnitude. The insulator-to-conductor transition, which occurred when a few wt% of MWNTs was added to the matrix, is said to be related to a percolation phenomenon with non-universal critical exponent. Two types of MWNTs treatment are compared, and the results are claimed to demonstrate that MWNTs should be used in as-prepared state. The treatment is shown to alter their morphology, and reduce the aspect ratio by a factor of 10, leading to a modification of the shape of the insulator-to-conductor transition curve and a decrease of the global improvement. 15 refs.

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