2.5. Dynamic-mechanical analysis
Dynamic mechanical characterization of YZSO-IR and M-YZSOIR
was performed by Rubber Process Analyzer (RPA2000, Alpha
Technologies) by applying a shear stress mode. The strain sweep
tests were carried out at 70 C and 10 Hz. Specimens were cut by
using a Constant Volume Rubber Sample Cutter (CUTTER 2000,
Alpha Technologies); the dimensions were 3.5 cm diameter and
0.2 cm thick; the weight 4.5 ± 0.3 g. Two measurements were
carried out for each sample, and the average value was reported