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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