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Influence of oxidative atmosphere of the electron beam irradiation on cyclization of PAN-based fibers
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  • Journal title : Carbon letters
  • Volume 16, Issue 3,  2015, pp.219-221
  • Publisher : Korean Carbon Society
  • DOI : 10.5714/CL.2015.16.3.219
 Title & Authors
Influence of oxidative atmosphere of the electron beam irradiation on cyclization of PAN-based fibers
Shin, Hye Kyoung; Park, Mira; Kim, Hak-Yong; Park, Soo-Jin;
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In order to study the impact of atmosphere during electron beam irradiation (EBI) of polyacrylonitrile (PAN) precursor fibers, the latter were stabilized by EBI in both air and oxygen atmospheres. Gel-fraction determination indicated that EBI-stabilization under an oxygen atmosphere leads to an enhanced cyclization in the PAN fibers. In the Fourier-transform infrared spectroscopy analysis, the PAN fibers stabilized by EBI under an oxygen atmosphere exhibited a greater decrease in the peak intensity at 2244 cm−1 (C≡N vibration) and a greater increase in the peak intensity at 1628 cm−1 (C=N absorption) than the corresponding PAN fibers stabilized under an air atmosphere. From the X-ray diffraction analysis it was found that oxygen uptake in PAN fibers leads to an increase in the amorphous region, produced by cyclization.
electron beam irradiation;stabilization;carbon fibers;polyacrylonitrile;
 Cited by
Preparation and characterization of graphite foams,Kim, Ji-Hyun;Jeong, Euigyung;Lee, Young-Seak;

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