Studies of dielectric relaxation in natural fiber–polymer composites

Polymer composites of a polyester resin matrix filled with short palm tree lignocellulosic fibers were studies by means of dielectric spectroscopy in the frequency range 0, 1–100 kHz and temperature interval from 40 °C to 200 °C. Three relaxations processes were identified, namely the orientation po...

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Bibliographic Details
Published in:Journal of electrostatics 2009-09, Vol.67 (5), p.717-722
Main Authors: Ben Amor, I., Rekik, H., Kaddami, H., Raihane, M., Arous, M., Kallel, A.
Format: Article
Language:English
Subjects:
Composite
Dielectric relaxation
Natural fiber
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Summary:Polymer composites of a polyester resin matrix filled with short palm tree lignocellulosic fibers were studies by means of dielectric spectroscopy in the frequency range 0, 1–100 kHz and temperature interval from 40 °C to 200 °C. Three relaxations processes were identified, namely the orientation polarization imputed to the presence of polar water molecules in Palm fiber, the relaxation process associated with conductivity occurring as a result of the carriers charges diffusion noted for high temperature above glass transition and low frequencies, and the interfacial relaxation that is attributable to the accumulation of charges at the Palm fibers/polyester interfaces.
ISSN:0304-3886
1873-5738
DOI:10.1016/j.elstat.2009.06.004