从共聚改性和共混改性两方面综述了近年来聚乳酸（PLA）增韧改性的研究现状，并着重介绍了植物纤维共混PLA的增韧机理和研究进展，最后对PLA的发展前景进行了展望。%This paper summarized the most recent development of toughening modification for poly (lactic acid)(PLA)in terms of copolymerization and blending technologies.The mechanisms and progresses in toughening techniques for PLA resin with plant fibers were focused, and the development prospects of modified PLA products were predicted.
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