STUDY OF THE SPACE CHARGE RELAXATION

IN POLY ETHER ETHER KETONE (PEEK)

M. Arous1*, F. Karray1, H. Hammami1,2, G. Perrier2

1Laboratoire Matériaux Composites Céramiques et Polymères (LaMaCoP), Faculté des Sciences de Sfax, 3018 Sfax, Tunisie

2Laboratoire Matériaux Composites, ESIGEC, Université de Savoie,73376 le Bourget du Lac, France

* Corresponding author. E-mail : Mourad.Arous@fss.rnu.tn

Received : 30 April 2002; revised version accepted : 17 December 2002

Abstract

The relaxation of space charge is studied by the dielectric modulus formalism in poly(ether ether

ketone) (PEEK). The obtained data suggest a prevailing ohmic conduction in one specimen and interfacial polarization effect, known as the Maxwell-Wagner-Sillars polarization. The interfacial relaxation taking place at the interface between the crystalline inclusions and the amorphous matrix. It’s attributed to the trapping of ionic charges at the interface between crystalline lamellae and the amorphous matrix. The conductivity must be attributed to the increasing mobility of the carriers.

Keywords : Space charge; Electric modulus; Interfacial relaxation; Poly(ether ether ketone).

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