With the energy crisis and environmental pollution, biodegradable polymers have attracted considerable interest because these compounds are environmentally friendly and renewable. Poly(lactic acid)(PLA) is considered as one of the most promising biodegradable polymers because of its excellent biocompatibility, biodegradability, easy processability and high strength. However, its poor ductility and impact properties seriously restrict the application. Polymer blending is an economical and effective way to solve the shortcomings. Unfortunately, PLA is thermodynamically immiscible with most polymers. It has been established that the compatibilization is a famous strategy to improve the miscibility of the blends by enhancing the adhesion between the phases. Thus, recent studies focus on various compatibilizers to obtain excellent performance of PLA-based blends. This review summarizes the recent development in compatibilization strategies applied to PLA-based blends.

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