延缓聚乳酸物理老化致脆现象的方法的研究进展  

Research Progress on the Methods of Retarding the Physical Aging-Induced Embrittlement of Polylactide

作　　者：孙申英 黄威[2] 陈鹏[2] SUN Shenying;HUANG Wei;CHEN Peng(School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030000,China;Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China)

机构地区：[1]太原科技大学材料科学与工程学院,山西太原030000 [2]中国科学院宁波材料技术与工程研究所,浙江宁波315201

出　　处：《塑料工业》2025年第2期1-5,146,共6页China Plastics Industry

基　　金：国家重点研发项目(2021YFC2101705)。

摘　　要：聚乳酸(PLA)作为一种可再生、可生物降解的环境友好型材料已得到广泛研究。然而,PLA随物理老化时间的延长而变脆限制了它的应用。本文首先浅析了PLA的物理老化现象,然后重点探讨了通过PLA分子结构改性、共混改性以及塑性变形三种方法来延缓PLA物理老化致脆现象的研究进展。最后,对相关研究进行了总结与展望。希望本文能够为延缓聚乳酸物理老化致脆现象的研究提供有益的参考。Polylactide(PLA),a renewable,biodegradable and environmental-friendly polymer,has attracted tremendous attention.However,the physical aging usually has a negative impact on ductility of PLA,causing embrittlement over time and restricting its wide applications.In this paper,the physical aging phenomena were summarized.In addition,the research progresses were summarized on retaining the ductility of PLA against the physical aging-induced embrittlement,mainly including molecular structure modifications,blending modifications,and plastic deformation.Finally,the relevant researches were summarized and prospected.It is hoped that this paper could provide useful references for the researches on retarding the physical aging-induced embrittlement of polylactide.

关 键 词：聚乳酸 生物降解 物理老化 物理老化致脆 

分 类 号：TQ321.2[化学工程—合成树脂塑料工业]