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Investigations of Temperature Effect on the Conduction Mechanism of Electrical Conductivity of Copolymer/Carbon Black Composite

El Hasnaoui, M ; Kreit, L ; Costa, L.C ; Achour, M.E

Applied microscopy, 2017, Vol.47 (3), p.121-125 [Periódico revisado por pares]

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Título:
Investigations of Temperature Effect on the Conduction Mechanism of Electrical Conductivity of Copolymer/Carbon Black Composite
Autor: El Hasnaoui, M ; Kreit, L ; Costa, L.C ; Achour, M.E
É parte de: Applied microscopy, 2017, Vol.47 (3), p.121-125
Notas: KISTI1.1003/JNL.JAKO201730475989611
Descrição: This study deals the prediction of temperature effect on low-frequency dispersion of alternating current (AC) conductivity spectra of composite materials based on copolymer reinforced with carbon black (CB) particles. A sample of ethylene butylacrylate loaded with 13% of CB particles were prepared and investigated using the impedance spectroscopy representation in the frequency range from 40 Hz to 0.1 MHz and temperature range from $20^{\circ}C$ to $125^{\circ}C$. The dielectric constant, ${\varepsilon}^{\prime}$, and dielectric losses, ${\varepsilon}^{{\prime}{\prime}}$, were found to decrease with increasing frequency. The frequency dependence of the AC conductivity follows the universal power law with a large deviation in the high frequency region, the positive temperature coefficient in resistivity effect has been observed below the melting temperature which makes this composite potentially remarkable for industrial applications.
Idioma: Coreano

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