THERMALLY STIMULATED CURRENT STUDY OF THE MICROSTRUCTURE OF PEEK

Thermally Stimulated Current (TSC) spectroscopy and Differential Scann ing calorimetry (DSC) have been applied to the characterization of the microstructure of Poly (Ether Ether Ketone)/ PEEK. the dielectric rel axation spectra show two modes, dependent upon crystallinity: for the mode stuated in the vicinity of the glass transition temperature, two components have been distinguished and attributed to the molecular mob ility in the 'true amorphous phase' and in the 'rigid amorphous region '. below 0-degrees-C, two sub-modes appear, situated around -110-degre es-C and -75-degrees-C, due to the two different crystal entities, bea ds and laths.