塑料科技2018，Vol.46Issue(2)：74-78,5.DOI:10.15925/j.cnki.issn1005-3360.2018.02.010
聚乳酸/接枝改性天然橡胶的制备及性能表征
Preparation and Characterization of Polylactide/Grafting Modified Natural Rubber
摘要
Abstract
The natural rubber grafted with glycidyl methacrylate (NR-g-GMA) was prepared by emulsion polymerization.The chemical structure of NR-g-GMA was confirmed by Fourier transform infrared (FTIR) spectroscopy.PLA/NR-g-GMA blends were prepared by a Haake internal melt mixer.The morphological,thermal and mechanical properties of the blends were investigated as a function of NR-g-GMA content.The results show that the dispersed phase of NR-g-GMA in the blends is distributed in the PLA matrix,and the size of the dispersed phase increases with the increase of the amount of NR-g-GMA.The introduction of NR-g-GMA reduces the glass transition temperature and crystallization temperature of PLA,increases the melting temperature and crystallinity,and reduces the thermal stability of the blends.The elongation at break of PLA/NR-g-GMA blends increases significantly with the increase of NR-g-GMA content.The elongation at break of pure PLA is 4％.When the NR-g-GMA dosage is 10％,the elongation at break of the blends reaches to 85％,indicating that NR-g-GMA has a significant toughening effect on PLA.关键词
聚乳酸/天然橡胶/接枝改性/熔融共混/增韧Key words
Polylactide/Natural rubber/Grafting modification/Melt blending/Toughening分类
化学化工引用本文复制引用
张春梅,翟天亮,刘海腾,谢黎,黄保连,罗勇悦..聚乳酸/接枝改性天然橡胶的制备及性能表征[J].塑料科技,2018,46(2):74-78,5.基金项目
贵州省普通高等学校科技拔尖人才支持技划(黔教合KY字[2016]089) （黔教合KY字[2016]089）
贵州省科学技术基金项目(黔科合J字[2015]2006号) （黔科合J字[2015]2006号）
国家自然科学基金项目(51703038) （51703038）
