Influence of the cure temperature and the accelerator content on the free volume in a DGEBA epoxy‐anhydride‐imidazole system

Abstract

A PALS study on an epoxy‐anhydride system cured in presence of the accelerator imidazole was carried out. The rate of the curing reaction was changed, modifying in this way the final structure of the samples. Specifically, the parameters cure temperature and accelerator content were modified. From the calorimetric scans, the glass transition temperature of each sample was determined. The results obtained using both techniques are jointly discussed. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)