赵西坡讲师交联结构聚乳酸生物降解材料的研究进展

Research Progress of Crosslinked Polylactic Acid Biodegradable Materials

摘要: 交联可使聚乳酸(PLA)具有网状结构,有效提高它的热稳定性和力学性能,主要综述了采用化学交联、辐照交联以及分子改性后交联制备PLA的方法,重点介绍了交联PLA常用的多官能度酸酐和异氰酸酯类交联剂的化学交联法,γ射线和电子束辐照的交联方法和通过端基改性聚乳酸形成活性端基的分子改性后交联方法.

Abstract: After crosslinking,poly(lactic acid) (PLA) can own network structure,and crosslinking can effectively improve the thermal stability and mechanical properties of PLA.The main methods of crosslinking reactions,such as chemical crosslinking,irradiation crosslinking and molecular modification of crosslinking are summarized,emphasis on the crosslinking agent of polyfunctional anhydride and isocyanate,γ-irradiation and electron beam irradiation methods,and crosslinking methods of reactive end groups-functionalized PLA.