After melt processing, the samples were heat-pressed at 150 ◦C
and 200 bars for 10 min and were thermo-molded into dumbbells
and disk plates with respectively the following characteristics:30 mm × 10 mm × 2 mm and 25 mm × 2 mm.The samples were then stored in a climatic and temperature testchamber (Froilabo – Firlabo) under a controlled relative humidity:40% RH, 30◦C.