Prior to blending, the PLA was drie

Prior to blending, the PLA was dried in vacuum at 80◦C for 24 h to eliminate any water that may have absorbed on the surface of the polymer particles. PLA was blended with NOL by addingNOL to the PLA matrix in different amounts (0, 2.5, 5, 7.5, 10, and12.5% (w/w)) and extruding the mixture using a torque rheome-ter