Polycarbonate-carbon nanofibers composites: an electron spin resonance study

Chipara, Mircea and Brittain, Wiliam J. and Lau, Kin-Tak and Chipara, Magdalena Dorina (2008) Polycarbonate-carbon nanofibers composites: an electron spin resonance study. Polymers and Polymer Composites , 16 (8). pp. 519-526. ISSN 0967-3911

Abstract

Electron spin resonance investigations on polycarbonate loaded with various amounts of carbon nanofibers (ranging from 0% to 10%) are reported. A complex resonance spectrum was recorded. The spectrum was assigned to the convolution of resonance lines originating from the conducting electrons delocalized over the metallic domains of nanotubes, of free radicals generated during the polymer processing, and of catalyst's traces. The shape of resonance spectra originating from conducting electrons delocalized over the metallic domains of nanotubes was accurately fitted by a Lorentzian-like shape. The correlation between the measured DC resistivity of these samples and the relevant parameters of the resonance spectrum (line width, g-factor, and ratio between the amplitude of the absorption and dispersion components) was investigated. The saturation of the ESR line, at room temperature is reported.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © Smithers Rapra Technology, 2008. Permanent restricted access to published version in accordance with the copyright policy of the publisher. Paper presented at: International Conference on Multifunctional Materials and Structures; Hong Kong, 2831 Jul 2008. Held USQ Library 624.18 INT
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 18 Jul 2014 04:09
Last Modified: 17 Dec 2014 01:16
Uncontrolled Keywords: carbon nanofibers; electrical conductivity; electron spin resonance; polycarbonate
Fields of Research : 10 Technology > 1007 Nanotechnology > 100708 Nanomaterials
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
10 Technology > 1007 Nanotechnology > 100704 Nanoelectromechanical Systems
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
URI: http://eprints.usq.edu.au/id/eprint/18934

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