石油化工2024，Vol.53Issue(3)：362-367,6.DOI:10.3969/j.issn.1000-8144.2024.03.008
顺丁橡胶对聚乳酸的增韧改性
Toughening modification of polylactic acid by cis-polybutadiene rubber
摘要
Abstract
cis-Polybutadiene rubber(BR)/polylactic acid(PLA)composites were prepared by melt blending.The properties of the composites were investigated by DSC,POM,TG,SEM and mechanical test.The experimental results show that the crystallinity of the composites decreases with the increase of BR content.The addition of BR leads to defects in the crystal structure of PLA,which reduces the brittleness and improves the toughness of the composites.When the content of BR is 20%(w),the comprehensive properties of BR/PLA composites are the best,with a elongation at break of 141.72%,a tensile strength of 23.17 MPa,and an impact strength of 6.083 kJ/m2.After additing BR,the amorphous region of PLA matrix in BR/PLA composites will increase,resulting in poor heat resistance.关键词
聚乳酸/顺丁橡胶/复合材料/结晶性能/力学性能Key words
polylactic acid/cis-polybutadiene rubber/composite/crystallization property/mechanical property分类
化学化工引用本文复制引用
陈俊雄,刘景镔,刘婉璐,王庆鹏,韩文宇,侯玉双..顺丁橡胶对聚乳酸的增韧改性[J].石油化工,2024,53(3):362-367,6.基金项目
2022年黑龙江省大学生创新创业训练计划资助项目(S202210232022). （S202210232022）
