Since the morphology of the blends has a major effect on mechanical properties, another approach to prepare bio-based polymers is by synthesis of copolymers of non-biodegradable synthetic polymers and biodegradable ones [10]. Within one copolymer different repetitive units can be present and can be either distributed statistically along the polymer chains (random copolymers), alternately, form a block (block copolymers) or a branching structure (grafted copolymers). These different structures, despite having the same overall composition, can have different properties. Moreover, copolymers have been developed to generate new materials with enhanced performance. The interest of these materials is linked to the in situ compatibilization of polymer blends [11], where the grafted copolymer formed during blending reduces the surface tension, prevents droplets coalescence and consequently generates polymer blends with enhanced properties.