Research Progress on Heat Resistant Modification of Polylactide
Polylactide(PLA)is a biodegradable polymer with excellent biocompatibility,mechanical properties,and processing properties,which has been widely used in fields such as medicine and food packaging.However,the slow crystallization rate,low crystallinity,and poor heat resistance of PLA seriously restrict its application in high-temperature environments.The research progress of heat-resistant modification of PLA at home and abroad is reviewed.The progress of improving the heat resistance of PLA by means of chemical copolymerization,crosslinking,blending and external field(heat treatment,stretching)is emphasized.The development prospect of heat-resistant polylactic acid materials is prospected.
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