A simple design was employed with one independent variable (concentration of KS added to the PCRPET by extrusion), taking two levels (2.5 and 4.0 wt.%) and two replicates.
A simple design was employed with one independent variable(concentration of KS added to the PCRPET by extrusion), taking twolevels (2.5 and 4.0 wt.%) and two replicates.