Influence and Regulation on the Crystal Structure of Polyacrylonitrile Fiber

被引：0
|
作者：
Zhu Z. [1 ,2 ]
He Z. [1 ,2 ]
Bai H. [1 ,2 ]
Chen X. [1 ,2 ]
Li Y. [3 ]
Yang C. [3 ]
机构：
[1] Global Energy Internet Research Institute Limited, Beijing
[2] Advanced Transmission Technology National Key Laboratory, Beijing
[3] State Grid Shenyang Electric Power Supply Company, Shenyang
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2018年 / 34卷 / 10期
关键词：
Crystallinity; Grain size; Nucleation; Segment arrangement;
D O I：
10.16865/j.cnki.1000-7555.2018.10.009
中图分类号：
学科分类号：
摘要：
Polyacrylonitrile fiber was prepared by different drawing process. The X-ray diffractometer was used to characterize the effects of coagulation bath drawing, the water bath drawing and the steam drawing on crystal structure of fibers. The results show that coagulation process is an important stage in which PAN macromolecular crystalline structure is formed. The increasing of coagulation bath drawing is beneficial for the transformation from helical conformation to sawtooth conformation. The ordered arrangement of macromolecular chain results in improvement of the crystallinity and grain size, but the reduction of the folding chain is not conducive to the nucleation of macromolecules. It is helpful to complete the crystal structure of the fiber by the water bath drawing and steam drawing. It is available to regulate the crystalline structure of PAN macromolecules by changing the drawing ratio of processes in preparation of polyacrylonitrile fiber. © 2018, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：50 / 53
页数：3
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