中国塑料2025，Vol.39Issue(5)：36-42,7.DOI:10.19491/j.issn.1001-9278.2025.05.006
端环氧型超支化聚酯对聚乳酸/滑石粉复合材料性能的影响研究
Effect of epoxy-terminated hyperbranched polyester on properties of poly(lactic acid)/talc blends
摘要
Abstract
In this paper,epoxy-terminated hyperbranched polyester(EHBP)were synthesized and then blended with poly(lactic acid)(PLA)and talc powders through melt blending to obtain PLA/talc/EHBP composites.The surface hydro-phobic properties,crystallization properties,molecular structure,mechanical properties,thermal properties,and micro-structures of the blends were characterized by contact angle measurement,differential scanning calorimetry,Fourier-transform infrared spectroscopy,universal testing machine,thermogravimetric analyzer,and scanning electron microsco-py.The results indicated that the addition of EHBP reduced the degree of crystallinity of PLA.The compatibility be-tween PLA and talc powders was best for the composites at a EHBP content of 2 phr.The addition of EHBP enhanced the mechanical properties and toughness of the composites.The composites obtained a significant improvement in the me-chanical properties at a EHBP content of 2 phr,leading to an increase in elongation at break by 29.3%,in impact strength by 49.8%,and in tensile strength by 31.3%.关键词
聚乳酸/滑石粉/端环氧型超支化聚酯/相容性Key words
poly(lactic acid)/talc/epoxy-terminated hyperbranched polyester/compatibility分类
化学工程引用本文复制引用
冯硕,周舒毅,焦洋,胡淼,张若轩,靳玉娟..端环氧型超支化聚酯对聚乳酸/滑石粉复合材料性能的影响研究[J].中国塑料,2025,39(5):36-42,7.基金项目
大学生科研与创业行动计划和实培计划(S202410011020) （S202410011020）
北京高校大学生创新创业训练校际合作计划项目(202498022) （202498022）
