聚乳酸基生物降解共混物的制备及应用  

Preparation and Application of Polylactic Acid Biodegradable Blends

作　　者：王志刚[1] 胡广[1] 任杰[1] 

机构地区：[1]同济大学材料科学与工程学院,上海201804

出　　处：《塑料》2017年第2期125-129,共5页Plastics

摘　　要：聚乳酸(PLA)是一种应用前景良好的生物基绿色高分子材料,具有良好的力学性能、生物相容性和生物可降解性,但PLA存在的韧性差、熔体强度低等性能缺陷很大程度上限制了其更广泛应用。通过与其他生物降解聚合物共混改性可以有效改善PLA的这些性能。文章综述了近年来国内外在聚乳酸与其他生物可降解物质共混改性材料的制备以及其在包装袋、生物降解地膜方面的应用,主要包括了聚乳酸/聚碳酸亚丙酯、聚乳酸/聚己二酸-对苯二甲酸丁二酯、聚乳酸/聚羟基脂肪酸酯、聚乳酸/淀粉等其混体系。Poly （lactic acid） （PLA）, as one of the most promising bio-based polymer materials, has good mechanical properties,biodegradability and biocompatibility. However,the brittleness and poor melting strength of neat PLA are the major drawbacks for its more wide applications. These properties of PLA can be effectively improved by blending PLA with other biodegradable polymers. The recent research progress in preparation of PLA blending with other biodegradable polymers and its application in the field of packing bag and biodegradable mulch film were reviewed, including PLA/PPC,PLA/PBAT,PLA/ PHA,PLA/Strach blending system.

关 键 词：聚乳酸 聚碳酸亚丙酯 聚己二酸-对苯二甲酸丁二酯 淀粉 生物可降解 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]