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KMID : 1102020170470030126
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Applied Microscopy
2017 Volume.47 No. 3 p.126 ~ p.130
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Fractal Approach to Alternating Current Impedance Spectroscopy Studies of Carbon Nanotubes/Epoxy Polymer Composites
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Belhimria Rajae
Boukheir Sofia
Samir Zineb
Len Adel
Achour Mohammed Essaid
Eber Nandor
Costa Luis Cadillon
Oueriagli Amane
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Abstract
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The dielectric relaxation characteristics of composites with different concentrations of carbon nanotubes loaded in an epoxy polymer matrix has been studied as a function of frequency over a wide range (1 Hz~10 MHz) at room temperature. Two characterization techniques were used in this work to measure and calculate the dimensionality parameters: small angle neutron scattering and impedance spectroscopy. The results obtained from both methods are in good agreement, indicating the reliability of the estimated fractal dimension, despite of the difference in the length scales accessed by the two techniques.
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KEYWORD
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Fractal dimension, Carbon nanotubes, Small angle neutron scattering, Impedance spectroscopy
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