Abstract The semi-crystalline morphology of a series of poly(ether ether ketone) (PEEK) has been investigated as a function of crystallization condition by dielectric relaxation spectroscopy. An interfacial polarization effect, known as the Maxwell-Wagner-Sillars polarization, is clearly evident taking place at the interface between the crystalline inclusions and the amorphous matrix. The intensity of the relaxation is presented in relation to the morphology of the crystalline part which is known to depend on annealing conditions

A Kallel