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Effects of multi-step stabilization method on textural properties of polyolefin-based activated carbon fibers

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2024, 34(2), pp.715-721
  • DOI : 10.1007/s42823-023-00614-z
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : June 7, 2023
  • Accepted : September 28, 2023
  • Published : March 28, 2024

Ahn Jeong-Rae 1 Lee Hye-Min 2 KIM Byung-Joo 3

1전주대학교 재료응용연구소
2한국탄소산업진흥원
3전주대학교

Accredited

ABSTRACT

In this study, we utilized a multi-step stabilization method, incorporating dry-oxidation, to produce high-density polyethylene (HDPE)-based activated carbon fibers. This stabilization was achieved through electron-beam irradiation, sulfonation, and dry oxidation. The stabilized fibers were carbonized and activated at 900 ℃. The crystallite characteristics of the activated carbon fibers were observed using X-ray diffraction, and their surface morphologies were analyzed through scanning electron microscopy. The textural properties were analyzed using N2/77 K adsorption–desorption isothermal curves. And leveraging the microdomain model, we explored the influence of these stabilization methods on the HDPE-based activated carbon fibers texture properties. The results show that HDPE fibers treated with sulfonation only at 100 ℃ for 60 min were not sufficiently cross-linked and were completely decomposed during the carbonization stage. However, the sulfonated fibers treated with the new dry-oxidation process maintained their shapes and were successfully activated. The specific surface area of the resulting activated carbon fibers was as much as 2000 m2/g.

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