摘要
采用右旋聚乳酸-己内酯无规共聚物(PDLA-r-PCL)对左旋聚乳酸(PLLA)进行改性,通过熔融纺丝-牵伸两步法分别制备PLLA、PLLA/PDLA-r-PCL共混纤维;采用差示扫描量热分析、毛细管流变仪、扫描电镜、广角X射线衍射及力学性能测试等方法对共混物及其共混纤维的结晶行为、热性能和力学性能进行研究。结果表明:m(PLLA)/m(PDLA-r-PCL)为95/5、90/10时,共混物具有较好的可纺性,热牵伸3倍后,纤维充分取向结晶,形成结构稳定的纤维;在相同纺丝条件下,PLLA/PDLA-r-PCL共混纤维的强度和韧性高于纯PLLA纤维。
Poly(L-Lactide)/Poly(D-Lacide)random copolymer blend fibers were prepared by two-step melt spinning method from blends of Poly(L-lactide)and random copolymer of poly(D-lacide)-r-poly(ε-caprolactone)(PLLA/PDLA-r-PCL).The crystallization behavior,thermal and mechanical properties of the blends and the fibers were investigated by DSC,capillary rheometer,SEM,WAXS and mechanical tests.The results showed that the PLLA/PDLA-r-PCL(95/5)and PLLA/PDLA-r-PCL(90/10)blends had good spinnability.The PLLA/PDLA-r-PCL(95/5)fibers with a drafting ratio of 3 was fully oriented and showed a more stale structure.Under the same spinning conditions,the strength and toughness of PLLA/PDLA-r-PCL fibers were stronger than that of the pure PLLA fiber.
作者
齐悦
李琦
杨博
李晓露
张秀芹
QI Yue;LI Qi;YANG Bo;LI Xiao-lu;ZHANG Xiu-qin(Beijing Key Laboratory of Clothing Materials R&D and Assessment,Beijing Engineering Research Center of Textile Nanofiber,Beijing Institute of Fashion Technology,Beijing 100029,China)
出处
《北京服装学院学报（自然科学版）》
CAS
北大核心
2019年第1期14-20,共7页
Journal of Beijing Institute of Fashion Technology：Natural Science Edition
基金
国家自然基金委项目(51673003)资助
作者简介
齐悦(1995-),女,硕士;通讯联系人:张秀芹,E-mail:clyzxq@bift.edu.cn
