Raman scattering for tensile testing of polyacrylonitrile-based and pitch-based single carbon fibers

Kimiyoshi Naito; Chiemi Nagai

論文 Raman scattering for tensile testing of polyacrylonitrile-based and pitch-based single carbon fibers

Kimiyoshi Naito (Research Center for Structural Materials/Materials Manufacturing Field/Polymer Matrix Composites Group, National Institute for Materials Science) ; Chiemi Nagai (Research Center for Structural Materials/Materials Manufacturing Field/Polymer Matrix Composites Group, National Institute for Materials Science)

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Kimiyoshi Naito, Chiemi Nagai. Raman scattering for tensile testing of polyacrylonitrile-based and pitch-based single carbon fibers. Fibers. 2024, 12 (10), 88.

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(abstract)

The tensile properties of polyacrylonitrile (PAN)-based and pitch-based single carbon fibers were assessed using Raman scattering. Parameters and ratios related to Raman scattering and stress measurement for the G- and D-bands were analyzed. These include peak values of Raman shifts (RG, RD), full width at half maximum (FWHMG, FWHMD), peak value slopes (|AG|, |AD|), peak value intercepts (BG, BD), intensity ratio (ID/IG), peak value ratio (RD/RG), full width at half maximum ratio (FWHMD/FWHMG), slope ratio (AD/AG), and intercept ratio (BD/BG). These parameters and ratios were determined by analyzing the PAN-based and pitch-based carbon fibers and were correlated to the tensile modulus (E), interlayer spacing (d002), lattice spacing (d10), and crystalline size (Lc and La). In addition, a linear relationship was identified between the Raman scattering, stress measurement parameters, ratios and E, d002, d10, as well as between the Raman scattering, stress measurement parameters, ratios and La and LC on the log–log scale.

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