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Continuous Nanoscale Carbon Fibers with Superior Mechanical Strength

Authors

  • Jie Liu,

    Corresponding author
    1. College of Materials Science and Engineering Beijing University of Chemical Technology Chaoyang District, Beijing 100029 (P. R. China)
    • College of Materials Science and Engineering Beijing University of Chemical Technology Chaoyang District, Beijing 100029 (P. R. China).
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  • Zhongren Yue,

    1. Department of Materials Science and Engineering University of Tennessee Space Institute Tullahoma, TN 37388 (USA)
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  • Hao Fong

    Corresponding author
    1. Department of Chemistry South Dakota School of Mines and Technology Rapid City, SD 57701 (USA)
    • Department of Chemistry South Dakota School of Mines and Technology Rapid City, SD 57701 (USA).
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Abstract

Continuous nanoscale carbon fibers can be developed by stabilization and carbonization of highly aligned and extensively stretched electrospun polyacrylonitrile copolymer nanofiber precursor under optimal tension. These carbon fibers, with diameters of tens of nanometers, are expected to possess a superior mechanical strength that is unlikely to be achieved through conventional approaches. This is because i) the innovative precursor, with a fiber diameter approximately 100 times smaller than that of conventional counterparts, possesses an extremely high degree of macromolecular orientation and a significantly reduced amount of structural imperfections, and ii) the ultrasmall fiber diameter also effectively prevents the formation of structural inhomogeneity, particularly sheath/core structures during stabilization and carbonization.

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