聚乳酸增强增韧改性研究进展

Research Progress in Reinforcement and Toughening of Poly(L-lacticacid)

聚乳酸是一种生物可降解高分子材料,具有良好的力学性能和可加工性,但是其韧性较差。有些改性方法能够显著提高聚乳酸的冲击韧性,但是会带来强度降低以及流动性变差的问题。综述了聚乳酸强度、韧性和流动性的影响因素以及控制方法。

Poly(L-lacticacid)is a biodegradable polymer material with good mechanical properties and processibility,but its toughness is low.Some modification methods can be taken to significantly improve the impact toughness of poly(L-lacticacid),but it will lead to the decrease of strength and poor fluidity.The influencing factors and control methods of strength,toughness and fluidity of poly(L-lacticacid)are reviewed.