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Scanning tunneling microscope study of polyacrylonitrile-based carbon fibers

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Abstract

Scanning tunneling microscopy (STM) was used to characterize the surface topography of polyacrylonitrile (PAN)-based carbon fibers before and after electrochemical treatment, stretch resistance test, and high-temperature treatment. A new kind of spiral structures was found, which was not only on the surface but also in the inner layer. The spiral structure of the fibers was caused by the spinning process. The fiber structure contained the shape of the precursor. There were some large cracks in the carbon fibers after the stretching resistance test. The large cracks can result in carbon fiber breaking under certain stress conditions. The difference in the structures of the carbon fibers before and after the high-temperature treatment was determined.

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Authors and Affiliations

  1. Beijing Laboratory of Vacuum Physics, Center for Condensed Matter Physics, Chinese Academy of Sciences, P.O. Box 2724, Beijing, 100080, China

    Dongxia Shi, Ning Liu, Haiqiang Yang, Juning Gao, Yueshan Jiang & Shijin Pang

  2. University of Science and Technology Beijing, Beijing, 100083, China

    Xubiao Wu & Zhen Ji

Authors
  1. Dongxia Shi
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  2. Ning Liu
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  3. Haiqiang Yang
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  4. Juning Gao
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  5. Yueshan Jiang
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  6. Shijin Pang
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  7. Xubiao Wu
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  8. Zhen Ji
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Shi, D., Liu, N., Yang, H. et al. Scanning tunneling microscope study of polyacrylonitrile-based carbon fibers. Journal of Materials Research 12, 2543–2547 (1997). https://doi.org/10.1557/JMR.1997.0337

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  • DOI: https://doi.org/10.1557/JMR.1997.0337

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