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Variations in the microstructure of carbon fibers prepared from liquefied wood during carbonization

Authors

  • Xiaojun Ma,

    Corresponding author
    1. College of Packaging & Printing Engineering, Tianjin University of Science & Technology, Tianjin 300222, People's Republic of China
    • College of Packaging & Printing Engineering, Tianjin University of Science & Technology, Tianjin 300222, People's Republic of China===

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  • Guangjie Zhao

    1. College of Material Science and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China
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Abstract

After spinning by adding hexamethylenetetramine and the curing treatment, carbon fibers from liquefied wood (LWCFs) were prepared by direct carbonization. Microstructure change of LWCFs during carbonization is studied by X-ray, Raman spectroscopy, and FTIR. Raman spectroscopy shows both the D peak at 1360 cm−1 and the G peak at 1595 cm−1 exist after 600°C, and a significant decrease is found in ID/IG during carbonization. X-ray diffraction shows the crystallite size (Lc(002) and La(100)) of LWCFs firstly decreases before 800°C and then increases with heat treatment temperature (HTT) increasing, whereas the interlayer spacing (d002) gradually decreases during carbonization. It is also found that the crystallite shape (La/Lc) and the degree of graphitization (G) all increase with increasing HTT. It is also found that structure of the precursor fibers from liquefied wood has been completely changed after carbonization. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011

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