The plasticization of PLA with citrate or adipate esters, the high concentration of glycerol in the TPS, and the inclusion of mixture stages with twin-screw extrusion allowed the production of TPS + PLA films with low PLA concentration using blow extru- sion.
Adipate esters at a low concentration, in particular DEA, which has a linear structure and the smallest molecular weight, were the best plasticizers for PLA. It was possible to produce films with mechanical properties that are appropriate for various types of applications.