Determination of the apparent activation energy of dielectric relaxation phenomena by means of the representation of ε” as a function of T at constant frequency

Abstract The main purpose of this work is to justify the use of the positions of the maxima of e” versus T curves when calculating the apparent activation energy in secondary dielectric relaxations or in the relaxation associated with the glass transition. To exemplify this, phenomenological models as well as experimental results for methacrylic polymers are discussed.