生物基植物油及其衍生物改性聚乳酸(PLA)的进展  

Research Progress in Poly(lactic acid) (PLA) Modified by Bio-Based Vegetable Oil and the Derivatives

作　　者：张亦婷 熊娟 杨思雨 沈贤琪 熊金松 赵西坡 彭少贤 ZHANG Yiting;XIONG Juan;YANG Siyu;SHEN Xianqi;XIONG Jinsong;ZHAO Xipo;PENG Shaoxian(Hubei Provincial Key Laboratory of Green Materials for Light Industry,School of Materials and Chemical Engineering,Hubei University of Technology,Wuhan,Hubei 430068,China;College of Chemistry and Chemical Engineering,Hunan University,Changsha,Hunan 410082,China)

机构地区：[1]湖北工业大学,材料与化学工程学院,绿色轻工材料湖北省重点实验室,湖北武汉430068 [2]湖南大学,化学化工学院,湖南长沙410082

出　　处：《塑料》2023年第4期153-159,共7页Plastics

摘　　要：聚乳酸(PLA)是一种高模量、高强度的生物可降解聚酯,具有较好的生物相容性,但是,PLA存在脆性较大、低韧性、结晶速率低等缺陷限制了其应用。增塑改性能减小分子链间的作用力,提高分子链的运动能力,改善PLA的加工流动性及脆性,其中,植物油及其衍生物是一种可再生的绿色增塑剂。主要介绍了植物油及其衍生物在改性PLA力学性能、结晶行为及加工性能中的应用,重点分析了蓖麻油、环氧大豆油等植物油作为增塑剂增塑PLA的增塑机理及效果。总结了在植物油基增塑剂增塑PLA的过程中,改善增塑剂与基体的相容性、减弱增塑剂迁移的有效方法。同时分析了植物油/填充材料复合改性PLA研究中,填料对增塑剂的增塑行为和材料力学性能的影响。Poly(lactic acid)(PLA) is a high-modulus,high-strength biodegradable polyester with good biocompatibility.However,the inherent disadvantages of PLA,such as high brittleness,low toughness,and slow crystallization rate,limit its wide application.Plasticization can reduce the force between molecular chains,improve the mobility of molecular chains,and improve the processing fluidity and brittleness of PLA.Among them,vegetable oil and its derivatives are renewable green plasticizers.The article mainly introduces the application of vegetable oil and its derivatives in the mechanical properties,crystallization behavior and processing properties of modified PLA,focusing on the plasticizing mechanism and plasticizing effect of vegetable oil plasticizers such as castor oil and epoxidized soybean oil to plasticize PLA.And the effective methods and strategies to improve the compatibility of plasticizer and substrate and attenuate plasticizer migration in the process of plasticizing PLA with vegetable oil-based plasticizers are summarized.The effects of fillers on plasticizer plasticizing behavior and material mechanical properties in the study of vegetable oil/filler material composite modified PLA are also discussed.

关 键 词：聚乳酸 生物基植物油 绿色增塑剂 共混改性 生物可降解 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]