Rheological measurements
The rheological properties of the PLA ENR20/PLA and ENR50/
PLA blends were measured by means of a Gemini 200 (Malvern
Instruments Ltd, UK) controlled stress rheometer at 180 C. Parallel
plate geometry with a diameter of 25 mm and a gap of 1 mm was
adopted. Before testing, samples were compression molded into
disks with diameter of 25 mm and thickness of 1.0 mm at 190 C
for 6 min. During the test, the frequency scanned from 0.01 to
100 rad/s and nitrogen gas was used to prevent thermal oxidation