Influence of oxidative atmosphere of the electron beam irradiation on cyclization of PAN-based fibers

Hye Kyoung Shin; Mira Park; Hak Yong Kim; Soo Jin Park

doi:10.5714/CL.2015.16.3.219

Influence of oxidative atmosphere of the electron beam irradiation on cyclization of PAN-based fibers

Hye Kyoung Shin, Mira Park, Hak Yong Kim, Soo Jin Park

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Abstract

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.

Original language	English
Pages (from-to)	219-221
Number of pages	3
Journal	Carbon Letters
Volume	16
Issue number	3
DOIs	https://doi.org/10.5714/CL.2015.16.3.219
State	Published - 1 Jul 2015

Bibliographical note

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© 2015, Carbon Letters. All rights reserved.

Keywords

Carbon fibers
Electron beam irradiation
Polyacrylonitrile
Stabilization

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10.5714/CL.2015.16.3.219

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title = "Influence of oxidative atmosphere of the electron beam irradiation on cyclization of PAN-based fibers",

abstract = "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.",

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T1 - Influence of oxidative atmosphere of the electron beam irradiation on cyclization of PAN-based fibers

AU - Shin, Hye Kyoung

AU - Park, Mira

AU - Kim, Hak Yong

AU - Park, Soo Jin

PY - 2015/7/1

Y1 - 2015/7/1

N2 - 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.

AB - 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.

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KW - Electron beam irradiation

KW - Polyacrylonitrile

KW - Stabilization

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Influence of oxidative atmosphere of the electron beam irradiation on cyclization of PAN-based fibers

Abstract

Bibliographical note

Keywords

UN SDGs

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