Abstract
Principal component analysis in a dual formulation is proposed to interpret changes in the C 1s X‑ray photoelectron spectra, arising from modification of the surface of polyetheretherketone. The distribution of the spectral intensities considered together with the spectra on dual graphs is used to construct a model of the peak structure of the C 1s spectra for their subsequent decomposition into components. It is shown that after treatment of the surface of polyetheretherketone with accelerated ion and neutral beams of argon-atom clusters, 288.3- and 285.5-eV peaks appear in the C 1s spectra, which characterize the presence of carboxyl functional groups and aliphatic carbon atoms in the modified surface layer.
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The work was supported by the Ministry of Higher Education and Science (project code RFMEFI57417X0136. Agreement 14.574.21.0136).
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Translated by L. Chernikova
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Beshenkov, V.G., Pestov, S.M. Determination of the Bonding State of the Modified Surface of Polyetheretherketone by the Principal Component Analysis of X-Ray Photoelectron C 1s Spectra. J. Surf. Investig. 15, 46–51 (2021). https://doi.org/10.1134/S1027451021010055
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DOI: https://doi.org/10.1134/S1027451021010055