EPR spectroscopic and X-Ray diffraction studies of carbon fibers with different mechanical properties

The carbon fibers obtained by carbonization of polyacrylonitrile fibers were studied by electron paramagnetic resonance and X-ray diffraction analysis in the range of small and wide scattering angles. Their elastic and strength characteristics were also studied. The concentration of the paramagnetic...

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Bibliographic Details
Published in:Russian journal of physical chemistry. B 2017-03, Vol.11 (2), p.233-241
Main Authors: Kovarskii, A. L., Kasparov, V. V., Krivandin, A. V., Shatalova, O. V., Korokhin, R. A., Kuperman, A. M.
Format: Article
Language:English
Subjects:
Alloys
Carbon fiber reinforced plastics
Carbon fibers
Chemistry
Chemistry and Materials Science
Elastic analysis
Elastic properties
Elastic scattering
Electron paramagnetic resonance
Mechanical properties
Physical Chemistry
Polyacrylonitrile
Resonance scattering
Scattering angle
Structure of Chemical Compounds. Spectroscopy
X-ray diffraction
X-ray scattering
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Summary:The carbon fibers obtained by carbonization of polyacrylonitrile fibers were studied by electron paramagnetic resonance and X-ray diffraction analysis in the range of small and wide scattering angles. Their elastic and strength characteristics were also studied. The concentration of the paramagnetic centers was correlated with the mechanical properties of carbon fibers. The wide-angle X-ray diffraction study did not reveal essential structural differences in the carbon fiber samples with different mechanical properties. At the same time, the small-angle X-ray scattering study showed that the fiber nanostructures with different mechanical properties differ substantially.
ISSN:1990-7931
1990-7923
DOI:10.1134/S1990793117020208