摘要
采用聚L-乳酸(PLLA)与聚D-乳酸(PDLA)共混熔融纺丝,初步研究了后处理条件对纤维结构与性能的影响。结果表明:通过PDLA与PLLA的共混熔融纺丝,形成了立体复合型PLA晶体(sc-PLA);随着热处理温度的提高,纤维中sc-PLA晶体的含量增加,纤维力学性能下降;拉伸温度为75℃时所得纤维的力学性能最好,随着拉伸倍数的增加,纤维力学性能提高,纤维中sc-PLA晶体的含量变化不大。
The blend system of poly（ L-lactic acid） （PLLA） and poly（ D-lactic acid） （PDLA） was melt spun into fibers. The effects of the post-treatment conditions on the structure and properties of the fiber were studied. The results showed that the stereocomplex PLA（sc-PLA） crystal can be formed by blend melt spinning of PDLA and PLLA. The content of sc-PLA crystal in the fiber was increased and the mechanical properties of the fiber were decreased while elevating the annealing temperature. The mechanical properties of the fiber were optimized at the drawing temperature of 75℃ and were improved while increasing the draw ratio whereas the content of sc-PLA crystal in the fiber had no great change.
出处
《合成纤维工业》
CAS
CSCD
北大核心
2010年第4期11-13,共3页
China Synthetic Fiber Industry
基金
高等学校学科创新引智计划项目(111-2-04)
纤维材料改性国家重点实验室青年创新研究项目(LQ0823)
关键词
聚乳酸
共混纺丝
立体复合
热性能
polylactic acid
blend spinning
stereocomplex
thermal property
