*2.3. Manufacturing of PLA with Maleinized Vegetable Oils*

Several PLA compositions were made with different phr of MBNO and MHO, which are summarized in Table 1, where the codes assigned to each of them are indicated. Prior to mixing, the PLA was dried for 24 h at 40 ◦C. The required amounts of PLA and oil were weighed and added, to be mixed manually. The mixtures were processed with a co-rotating twin-screw extruder (D = 30 mm; L/D = 20:1) from DUPRA (Alicante, Spain), at a rotation speed of 40 rpm with a temperature profile of 165 ◦C, 168.5 ◦C, 172.5 ◦C and 175 ◦C from the feed zone to die, respectively. The compositions obtained were cooled to room temperature, pelletized and dried at 40 ◦C for 24 h. Finally, each composition was shaped by injected molding from Mateu and Solé (Barcelona, Spain) at temperature profiles of 170 ◦C, 180 ◦C, 190 ◦C and 200 ◦C from the feed section to injection nozzle.

**Table 1.** Composition of plasticized PLA with different contents (phr) of maleinized vegetable oils and labeling of the formulations.

