摘要
在 PAN/ DMSO湿法纺丝体系中 ,改变水洗条件 ,得到含有不同 DMSO含量的聚丙烯腈原丝。通过光学显微镜、X射线衍射、DSC和 TG等分析测试手段 ,研究了残余溶剂二甲基亚砜 (DMSO)对 PAN纤维结构及热性能的影响。在纤维低温热处理过程中 ,原丝中痕量 DMSO的存在 ,可以改变纤维的截面形状、破坏纤维的晶态结构 。
PAN precursor containing of different amount of DMSO was obtained by altering water-washing technology in PAN/DMSO wet spinning. It was shown that the remains of DMSO had effect on the structure and thermol properties of PAN fiber, which were determined by optical microscope, X-ray diffractometer, differential scanning calorimeter and thermol gravity. In the process of low-heat-treatment, the trace remains of DMSO in PAN precursor can change the cross section of the fiber, damaging the crystalline structure, decreasing the heat stability of fiber.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2003年第4期89-91,共3页
Polymer Materials Science & Engineering
