Abstract
The processes occurring in friction of samples of ultra-high molecular weight polyethylene (UHMWPE) obtained by pressing at 190 °C from discrete UHMWPE particles modified by α-tocopherol (α-T) were studied using X-ray photoelectron spectroscopy, thermogravimetry, thermomechanical analysis, investigation of the oxygen uptake kinetics, and determination of the inhibitory activity. Pressing results in the isolation of α-T on the sample surface, its oxidative destruction, and inhibition of UHMWPE oxidation. After tribological tests, the atomic content of oxygen in the surface layer of the modified sample remains at the initial level, while that in the non-modified UHMWPE sample increases by 50%.
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Dedicated to Academician of the Russian Academy of Sciences Yu. N. Bubnov on the occasion of his 80th birthday and to the 60th anniversary of A. N. Nesmeyanov Institute of Organo-element Compounds of the Russian Academy of Sciences.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2527—2533, November, 2014.
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Krasnov, A.P., Naumkin, A.V., Bulgakov, V.G. et al. A comprehensive study of ultra-high molecular weight polyethylene modified by α-tocopherol after exposure to extremely high temperatures. Russ Chem Bull 63, 2527–2533 (2014). https://doi.org/10.1007/s11172-014-0771-8
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DOI: https://doi.org/10.1007/s11172-014-0771-8