Research Progress of Crosslinked Polylactic Acid Biodegradable Materials

After crosslinking,poly(lactic acid) (PLA) can own network structure,and crosslinking can effectively improve the thermal stability and mechanical properties of PLA.The main methods of crosslinking reactions,such as chemical crosslinking,irradiation crosslinking and molecular modification of crosslinking are summarized,emphasis on the crosslinking agent of polyfunctional anhydride and isocyanate,γ-irradiation and electron beam irradiation methods,and crosslinking methods of reactive end groups-functionalized PLA.