2.3. RheologyRheological behavior of the PCL, PLA, and PLA/PCL blends wascharacterized on a strain controlled rheometer (Physica MCR 302,Anton Paar, Austria). Measurements were carried out with parallelplates of 25 mm diameter (PP25) and a gap height = 1 mm. Dynamicfunctions, i.e. complex viscosity (η⁎) were measured using a frequencysweep test in the range of frequency from 0.5 to 100 rad/s, at temperature of 220 °C and a fixed shear strain of 1%, which was in thelinear viscoelastic region (LVR) of the samples [19].