为了获得降解性能、亲水性能和力学性能等更好的生物材料,各种功能分子改性聚乳酸的研究日益受到重视。本文按照官能团的不同,综述了近年来功能分子共聚改性聚乳酸的研究情况,指出利用新颖的功能分子改性聚乳酸和利用直接熔融共聚法降低共聚改性聚乳酸是未来的发展方向。 In order to obtain better biomaterials such as degradability, hydrophilicity and mechanical properties, the research of various functional molecules modified polylactic acid has drawn more and more attention. In this paper, the research on the copolymerization of poly (D, L - lactic acid) with functional molecules in recent years is reviewed in this paper. It is pointed out that it is the future direction to modify poly (D, L - lactic acid) by using novel functional molecules and to reduce the copolymerization of modified polylactic acid by direct melt copolymerization.