where tear propagated (Fig. 4B and C). During tensile assays, in TPS films tear propagated following the same slit direction, as it can be observed in Fig. 4B. Meanwhile, talc presence within starch matrix
caused a tear propagation deviation of approximately 45?respects to slit direction (Fig. 4C). The fact that all TPS films with talc showed the same tear propagation direction could be related to a prefer-
ential particle orientation within the matrix reported in a previous
work (Castillo et al., 2013).