Analysis of Molecular Orientation and Mechanical Properties of PAN Precursors Depending on Drawing Stages and Jet Stretch Ratio in Wet-Spinning 


Vol. 62,  No. 4, pp. 222-228, Aug.  2025
10.12772/TSE.2025.62.222


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  Abstract

To investigate the effect of drawing on polyacrylonitrile (PAN) precursors used for carbon fibers, a wet-spinning method was employed. The stepwise drawing process significantly improved fiber orientation and mechanical properties, progressively enhancing these characteristics from the jet-stretch stage to the post-drawing stage. After postdrawing, the PAN precursor exhibited a tensile strength of 4.82 g/den. Furthermore, varying the jet stretch ratios (0.3, 0.5, 0.7, and 0.9) led to an increased post-drawing ratio, further enhancing the orientation factor and mechanical properties. At the optimal jet stretch ratio of 0.9, the highest orientation factor and tensile strength were 0.853 and 6.01 g/den, respectively. After carbonizing the optimized PAN precursor at 1350 °C, the resulting carbon fiber exhibited a tensile strength of 3.39 GPa and a modulus of 352 GPa.

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  Cite this article

[IEEE Style]

조현재, 유승민, 김병석, 정용식, "Analysis of Molecular Orientation and Mechanical Properties of PAN Precursors Depending on Drawing Stages and Jet Stretch Ratio in Wet-Spinning," Textile Science and Engineering, vol. 62, no. 4, pp. 222-228, 2025. DOI: 10.12772/TSE.2025.62.222.

[ACM Style]

조현재, 유승민, 김병석, and 정용식. 2025. Analysis of Molecular Orientation and Mechanical Properties of PAN Precursors Depending on Drawing Stages and Jet Stretch Ratio in Wet-Spinning. Textile Science and Engineering, 62, 4, (2025), 222-228. DOI: 10.12772/TSE.2025.62.222.

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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)