E-MA-GMA对PLA/LLDPE共混体系的增容性研究  

Compatibilization of PLA/LLDPE/E-MA-GMA Blends

作　　者：王晓婷[1] 唐颂超[1] 王钰霖[1] 

机构地区：[1]华东理工大学材料科学与工程学院超细材料制备与应用教育部重点实验室,上海200237

出　　处：《塑料》2008年第4期15-17,共3页Plastics

摘　　要：采用SEM、材料力学性能、旋转流变等实验方法考察了乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯三元共聚物(E-MA-GMA)对聚乳酸/线性低密度聚乙烯(PLA/LLDPE)共混体系的微观形态、力学性能以及动态流变性能的影响。结果表明:E-MA-GMA的加入能显著提高PLA/LLDPE的相容性,分散相在PLA基体中有更加细微和均匀的分散,并呈现部分韧性断裂特征,材料冲击韧性显著提高,共混体系的动态损耗模量增大。The effectiveness of toughening poly （lactic acid） （PLA） with low linear density polyethylene （LLDPE） and ethylene-methyl acrylate-glycidyl methacrylate terpolymer（E-MA-GMA） was studied. It was found that the addition of E-MA- GMA could enhance compatibility between PLA and LLDPE. The phase morphologies of the blends with increasing content of E-MA-GMA were observed by SEM. The particle size of LLDPE decreased with increasing content of E-MA-GMA. Viscosity was increased by addition of E-MA-GMA. The mechanical properties of the PLA/LLDPE blends,particularly the Charpy impact strength were markedly improved by addition of a small amount of E-MA-GMA.

关 键 词：聚乳酸 线性低密度聚乙烯 乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯 增韧 相容性 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]