中国塑料2025，Vol.39Issue(7)：1-5,5.DOI:10.19491/j.issn.1001-9278.2025.07.001
高韧性生物基聚乳酸/聚氨酯共混物的制备及性能研究
Study on preparation and properties of highly tough bio-based polylactic acid/polyurethane blends
刘霖 1寿韬 1廖飞扬 1郑梓康 1冯馨禾 1赵秀英1
作者信息
- 1. 北京化工大学材料科学与工程学院,北京 100029
- 折叠
摘要
Abstract
Bio-based thermoplastic polyurethanes(BPUs)were synthesized using bio-derived 1,5-pentanediyl diisocya-nate and poly(1,3-propanediol),with either isosorbide(IS)or a combination of IS and 3-allyloxy-1,2-propanediol(APD)as chain extenders.These BPUs were employed to toughen polylactic acid(PLA)via dynamic vulcanization.The influence of chain extender composition and structure on the toughening performance of PLA/BPU blends was sys-tematically investigated.The PLA/BPU-IS/APD blend demonstrated superior mechanical properties,achieving tensile strength of 47.22 MPa,elongation at break of 133.8%,and impact strength of 54.21 kJ/m²,while maintaining a high bio-based content of 99.4%.关键词
聚乳酸/聚氨酯/生物基材料/动态硫化/力学性能Key words
polylactic acid/polyurethane/bio-based materials/dynamic vulcanization/mechanical strength分类
化学化工引用本文复制引用
刘霖,寿韬,廖飞扬,郑梓康,冯馨禾,赵秀英..高韧性生物基聚乳酸/聚氨酯共混物的制备及性能研究[J].中国塑料,2025,39(7):1-5,5.
