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Elementarerweichungen in Amorphen Polymeren
Authors:R. Bonart  A. J. Owen  I. Paulus
Affiliation:(1) Present address: Institut für Angewandte Physik der Universität Regensburg, Deutschland
Abstract:Thermally stimulated recovery behaviour of amorphous polymers is described in terms of a continuous distribution of sharply defined elementary softening processes in the polymer. It is proposed that each of these elementary processes is the result of a co-operative site-change mechanism. On exceeding the activation temperature for the process, the viscoelastic time constants fall abruptly by many orders of magnitude, as opposed to following an Arrhenius-type law. The implications of this type of behaviour are discussed.
Prof. Schwarzl zum 60. Geburtstag gewidmet.
Keywords:Cooperative relaxation  elementary softening  thermally stimulated schrinkage  thermo-mechanical properties
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