The degradation of aliphatic polyesters takes place
through the hydrolysis of the ester backbone under aqueous
conditions, and their degradation rate depends on the
crystallinity, the size and form of the crystallite, the
morphological structure, etc. [28]. This hydrolytic degradation occurs preferentially in the amorphous region rather
than the crystalline one, because water molecules can easily
diffuse into the amorphous region of the polymer.