摘要
基于原位反应增容原理制备了一种可生物降解的聚乳酸(PLA)/聚己内酯(PCL)共混材料。探究了PLA/PCL不同配比及相容剂乙烯-丙烯酸丁酯-甲基丙烯酸缩水甘油酯(EBA-GMA)(8份)对增韧效果的影响,目的是研究设计一种增韧效果最佳的PLA/PCL/EBA-GMA可降解材料。并采用平板流变仪、傅里叶红外光谱仪(FTIR)、扫描电子显微镜(SEM)及差示扫描量热法(DSC)对其反应机理、微观形貌及热性能进行了表征。结果表明,在不加相容剂时,PLA/PCL(80/20)能取得最好的增韧效果;加入8份相容剂后,PLA/PCL(85/15)的缺口冲击强度达75.4 kJ/m^2,增韧效果最好。
A series of biodegradable poly(lactic acid)/poly(ε-caprolactone)(PLA/PCL)blends were prepared by in-situ reactive compatibilization.In order to obtain a biodegradable PLA/PCL/ethylene-butyl acrylate-glycidyl methacrylate(EBA-GMA)composites with excellent toughness,the effect of compatibilizer EBA-GMA(8 phr)and the ratio of PLA and PCL on toughening performance was studied.Meanwhile,flat plate rheometer,fourier transform infrared(FTIR),scanning electron microscope(SEM)and differential scanning calorimetric(DSC)were used to investigate these phenomena,such as,reaction mechanism,microstructure and thermal behaviors of the blends.The results show that PLA/PCL(80/20)could achieve the best toughening effect without compatibilizer.When the content of compatibilizer is 8 phr,the notched impact strength of PLA/PCL(85/15)could achieve 75.4 kJ/m^2,which has the best toughening effect.
作者
何和智
陈鸣
湛志明
王国振
熊承添
HE He-zhi;CHEN Ming;ZHAN Zhi-ming;WANG Guo-zhen;XIONG Cheng-tian(Key Laboratory of Polymer Processing Engineering of the Ministry of Education,National Engineering Research Center of Novel Equipment for Polymer Processing,Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing,South China University of Technology,Guangzhou 510640,China)
出处
《塑料工业》
CAS
CSCD
北大核心
2020年第4期37-41,共5页
China Plastics Industry
关键词
聚乳酸
聚己内酯
增韧
Poly(lactic acid)
Poly(ε-caprolactone)
Toughening
