Dirk J. A. Senden, Johannes A. W. van Dommelen and L. E. Govaert
The current understanding of physical aging of glasses is that it results in an increase of activation barriers to plastic deformation. Surprisingly, however, a significant change in the temperature dependence of plastic deformation in polymeric glasses has, until now,never been observed experimentally. This study convincingly shows that this temperature dependence indeed changes with aging, which is important to take into account in constitutive models.