聚乳酸(PLA)是一种重要的生物降解材料,具有良好的力学性能和广泛的用途。但其韧性较差。通过增韧改性可以提高其韧性,扩大应用范围。概述了PLA增韧改性的研究进展,指出了其今后的发展方向。 Polylactic acid (PLA) is an important biodegradable material, has good mechanical properties and a wide range of uses. But its toughness is poor. Toughening can be improved by toughening, expanding the scope of application. The research progress of PLA toughening and modification is summarized, and its development direction is pointed out.