TEM study on the inhomogeneity of oxygen diffusion distances in single polyacrylonitrile-based carbon fibers

doi:10.1016/j.apsusc.2018.12.268

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	TEM study on the inhomogeneity of oxygen diffusion distances in single polyacrylonitrile-based carbon fibers
	Guo, Xinshuang 1,4; Zhang, Kexiang 1; Cheng, Jianxiang 3; He, Hui 1,3; He, Lianlong 1; Xu, Jian 2
刊名	APPLIED SURFACE SCIENCE
	2019-05-01
卷号	475 页码:571-576
关键词	PAN-based carbon fiber Skin width Oxygen diffusion distances Inhomogeneity TEM
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2018.12.268
通讯作者	He, Hui(huihe@yzu.edu.cn) ; He, Lianlong(llhe@imr.ac.cn)
英文摘要	Accurate measurement of oxygen diffusion distances (ODDs) is important but difficult in the production of polyacrylonitrile (PAN)-based carbon fibers. Traditionally, the ODDs were deemed to be homogeneous in a single fiber and paid no attention. Herein, the skin widths of carbon fibers with the skin-core structure were proposed to assess the ODDs, and the ODDs were investigated by transmission electron microscopy. The ODDs were first found to be homogeneous for the commercially noncircular carbon fibers, while they were uniform in every direction for the circular single carbon fibers. The inhomogeneity of the ODDs was unrelated to the surface and cross-sectional morphologies of carbon fibers, and it was considered to result from the density difference at the edge of a single PAN precursor fiber. These findings not only deepen the understanding of the effect of the PAN precursor fiber shapes on the oxygen diffusion during stabilization, but also provide an opportunity for optimizing the stabilization conditions according to the density difference at the edges of single PAN precursor fibers.
资助项目	Natural Science Foundation of China[51771168] ; Science and Technology Project of Jiangxi Provincial Department of Education[GJJ171143] ; Key Technologies R&D Program of China[2011CB605803] ; Key Technologies R&D Program of China[2016YFC0209305]
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000458482100067
资助机构	Natural Science Foundation of China ; Science and Technology Project of Jiangxi Provincial Department of Education ; Key Technologies R&D Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/131910]
专题	金属研究所_中国科学院金属研究所
通讯作者	He, Hui; He, Lianlong
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Lab Polymer Phys & Chem, Beijing 100190, Peoples R China 3.Yangzhou Univ, Coll Phys Sci & Technol, Yangzhou 225002, Jiangsu, Peoples R China 4.Pingxiang Univ, Engn & Technol Res Ctr Environm Protect Mat & Equ, Pingxiang 337055, Peoples R China
推荐引用方式 GB/T 7714	Guo, Xinshuang,Zhang, Kexiang,Cheng, Jianxiang,et al. TEM study on the inhomogeneity of oxygen diffusion distances in single polyacrylonitrile-based carbon fibers[J]. APPLIED SURFACE SCIENCE,2019,475:571-576.
APA	Guo, Xinshuang,Zhang, Kexiang,Cheng, Jianxiang,He, Hui,He, Lianlong,&Xu, Jian.(2019).TEM study on the inhomogeneity of oxygen diffusion distances in single polyacrylonitrile-based carbon fibers.APPLIED SURFACE SCIENCE,475,571-576.
MLA	Guo, Xinshuang,et al."TEM study on the inhomogeneity of oxygen diffusion distances in single polyacrylonitrile-based carbon fibers".APPLIED SURFACE SCIENCE 475(2019):571-576.