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AC CONDUCTIVITY AND DIELECTRIC PROPERTIES OF PMMA/FULLERENE COMPOSITES
Faculty
Science
Year:
2010
Type of Publication:
Article
Pages:
911-919
Authors:
Ahmed, R. M, Nasr, G. M
DOI:
10.1142/S0217984910022962
Journal:
MODERN PHYSICS LETTERS B WORLD SCIENTIFIC PUBL CO PTE LTD
Volume:
24
Research Area:
Physics
ISSN
ISI:000276687100008
Keywords :
Fullerene, AC conductivity, dielectric properties, PMMA, electrical modulus
Abstract:
Dielectric properties and electrical conductivity of different concentrations of Poly methylmethacrylate (PMMA)/fullerene C60 composites have been reported at room temperature in the frequency range from 1 kHz to 5 MHz. The frequency dependence of complex permittivity, epsilon{*}, and complex electrical modulus, M{*}, have been measured. Frequency dependence of dielectric constant, follows Cole-Cole dielectric relaxation equations, was investigated diagrammatically. Moreover, equations of Tsangaris et al. have been tested for our case to describe the dielectric behavior of particulate polymeric composite containing fillers which give as at is factory agreement taking into account the variation of the aspect ratio with the volume fraction of fullerene C60 doped in the PMMA matrix.
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