Lastly it is noteworthy that the well-known brittleness of PLA can be overcome by reactive blending without sacrificing its
thermal properties, and that the addition of only a small amount of a reactive copolymer is enough to toughen the PLA. The inherent terminal groups of PLA reacted efficiently with the epoxide groups in the copolymer during melt-mixing, which resulted in supertough PLA materials. It was also deduced that crystallization of the PLA matrix plays a significant role in the toughening. There are few reports in PLA blends pointing out the effects of crystallization