2D SAXS/WAXD analysis of pan carbon fiber microstructure in organic/inorganic transformation
文献类型：期刊论文
| 作者 | Zhu, Cai-zhen1,2; Yu, Xiao-lan1; Liu, Xiao-fang1; Mao, Yun-zen3; Liu, Rui-gang1; Zhao, Ning1; Zhang, Xiao-li1; Xu, Jian1 |
| 刊名 | CHINESE JOURNAL OF POLYMER SCIENCE
 |
| 出版日期 | 2013-05-01 |
| 卷号 | 31期号:5页码:823-832 |
| 关键词 | Polyacrylonitrile Pre-oxidation Carbonization Saxs/waxd Microstructure |
| ISSN号 | 0256-7679 |
| DOI | 10.1007/s10118-013-1272-1 |
| 英文摘要 | Structure of PAN fibers during pre-oxidation and carbonization was studied using two dimensional small angle X-ray scattering/wide angle X-ray diffraction (2D SAXS/WAXD). The SAXS results show that during pre-oxidation between 180 A degrees C and 275 A degrees C, the volume content of microvoids increases with the temperature increasing, which may be one of reasons for the decrease of tensile strength of pre-oxidized fibers. 253 A degrees C was the critical transition temperature, the length, diameter, aspect ratio and orientation distribution of microvoids increased with temperature before this temperature and decreased after this temperature. After the high temperature carbonization, lots of spindly microvoids formed. WAXD patterns demonstrate that the crystallite size of PAN fibers first increased before 230 A degrees C and then decreased with the increase of temperature during the pre-oxidation. The diffraction peak of PAN fibers at 2 theta a parts per thousand 17A degrees almost disappeared at the end of preoxidation while the diffraction peak of aromatic structure at 2 theta a parts per thousand 25A degrees appeared at 253 A degrees C. During carbonization, the peak intensity at 2 theta a parts per thousand 25A degrees increased apparently due to the formation of graphite structure. The results obtained give a deep understanding of the microstructure development in the PAN fibers during pre-oxidation and carbonization, which is important for the preparation of high performance carbon fibers. |
| 语种 | 英语 |
| WOS记录号 | WOS:000317985200012 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46431]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Xu, Jian |
| 作者单位 | 1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Lab Polymer Phys & Chem, Inst Chem, Beijing 100190, Peoples R China 2.Shenzhen Univ, Coll Chem & Chem Engn, ShenZhen Key Lab Funct Polymer, Shenzhen 518060, Peoples R China 3.Donghua Univ, Coll Mat Sci & Engn, Shanghai 201620, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Cai-zhen,Yu, Xiao-lan,Liu, Xiao-fang,et al. 2D SAXS/WAXD analysis of pan carbon fiber microstructure in organic/inorganic transformation[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2013,31(5):823-832. |
| APA | Zhu, Cai-zhen.,Yu, Xiao-lan.,Liu, Xiao-fang.,Mao, Yun-zen.,Liu, Rui-gang.,...&Xu, Jian.(2013).2D SAXS/WAXD analysis of pan carbon fiber microstructure in organic/inorganic transformation.CHINESE JOURNAL OF POLYMER SCIENCE,31(5),823-832. |
| MLA | Zhu, Cai-zhen,et al."2D SAXS/WAXD analysis of pan carbon fiber microstructure in organic/inorganic transformation".CHINESE JOURNAL OF POLYMER SCIENCE 31.5(2013):823-832. |
入库方式： OAI收割
来源：化学研究所
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