The main mechanical relaxation temperatures (T˛), on the other hand, were obtained for the different combinations of CS–CO blends analyzed, by DMTA. This temperature, which is normally associated with the mechanical manifestation of the glass transition temperature of the material Tg, was determined from the drop in the storage modulus E, from the peaks in loss modulus E and in tan ı (see Fig. 3b).
From all these measurements, those obtained from the drop in E were, however, more reproducible in
most cases. These were taken for further discussion in this work.