2.2.3. Tree Point Flexural Tests

The flexural tests were conducted according to ASTM C580 standard [40] on a universal machine model 5582 made by Instron (Norwood, MA, USA). For these tests, 10 rectangular cross-section samples with dimensions of 13 cm × 1.5 cm × 1.5 cm were used for each volume fraction of the biocomposites and the neat COPU resin, with a distance between the cleavers of 100 mm and a test speed of 1.3 mm/min.
