Provided is a biodegradable film including a hydroxyalkanoate-lactide copolymer and polybutylene adipate terephthalate (PBAT).

The present invention relates to a thermoplastic polymer blend comprising (g) at least one thermoplastic, hydrophobically modified starch as component (a), (h) at least one thermoplastic native starch as component (b), and (i) at least one thermoplastic polyester as component (c), which selected from the group consisting of aliphatic polyesters, aliphatic-aromatic polyesters and mixtures thereof.

The invention also relates to a process for preparing such a thermoplastic polymer blend, and a mono-layered or multi-layered film comprising at least one layer made of a thermoplastic polymer blend.