全生物降解聚乳酸/聚己内酯共混物的研究进展  

Research Progress in Fully Biodegradable PLA/PPC Blends

作　　者：王翔宇[1] 张玉霞[1] 吴湘艳 王向东[1] 

机构地区：[1]北京工商大学材料与机械工程学院,北京100048

出　　处：《塑料》2016年第5期108-113,共6页Plastics

基　　金：北京市级大学生科学研究与创业行动计划(SJ201602084)

摘　　要：介绍了完全生物降解聚乳酸(PLA)/聚己内酯(PCL)共混物的研究进展,重点阐述了其相容性、相态结构、熔融结晶行为、力学性能及加工工艺等方面的研究成果。合适的相容剂能够有效改善共混体系相容性,提高PLA/PCL共混物的韧性,并使体系产生协同效应。PCL的加入并未改变PLA的晶型,但却降低了PLA的结晶温度和PLA的结晶度。黏度、剪切速率、界面张力等都是相态结构的影响因素,通过控制这些因素可以实现对相态结构的控制。相对于单组分体系,PLA/PCL共混物力学性能和加工性能得到改善,并适用多种加工工艺。Research progress in fully biodegradable PLA/PCL blends is reviewed. Their compatibility,phase morphologies, melting and crystallization behavior, mechanical properties, as well as processing technology are introduced. The appropriate compatibilizer can improve the compatibility and toughness of PLA/PCL. It is found that crystallization temperature and degree of crystallinity have been lower than pure PLA and the crystal formation have not been changed in terms of crystallization. Viscosity, shear rate, interfacial tension ere are the influencing factors of the phase structure. We can achieve the control of the phase structure through controlling these factors. Comparing to single component system, a variety of processing technology can be appllied to blend for that mechanical properties and processing properties of PLA/PCL blends are improved.

关 键 词：聚乳酸 聚己内酯 相容性 结晶性能 加工工艺 

分 类 号：TQ323[化学工程—合成树脂塑料工业]