171287 20260520092808.0 doi 10.1002/app.40844 sideral 85640 ART-2014-85640 eng Puértolas, José Antonio Universidad de Zaragoza (orcid)0000-0002-3125-5802 Dielectric behaviour induced by vitamin E and electron beam irradiation in ultra high molecular weight polyethylene 2014 Radiation cross-linked ultra high molecular weight polyethylenes (UHMWPEs) have been successfully used as wear resistant bearing surfaces in total joint arthroplasty. A recent development in this field is the incorporation of the antioxidant vitamin E into radiation cross-linked UHMWPE. This study investigates the effects of radiation cross-linking and vitamin E incorporation on the dielectric behavior of UHMWPE. The dielectric relaxations of virgin and 0.1 wt % vitamin E-blended UHMWPE and their irradiated counterparts (up to 300 kGy dose) were investigated. To determine the effect of vitamin E content alone, vitamin E-loaded UHMWPEs were used. The results showed that radiation cross-linking and vitamin E content both increased dielectric polarization in UHMWPE and under some conditions induced electrical conductivity. This result is significant because it shows that the conductive response of UHMWPE-bearing surfaces may depend on manufacturing processes and additives. Access copy available to the general public Unrestricted info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 1.768 2014 POLYMER SCIENCE 35 / 82 = 0.427 2014 Q2 T2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Martínez-Morlanes, María José Teruel, Roberto Martinez-Felipe, Alonso Oral, Ebru Pascual, Francisco Javier (orcid)0000-0002-4502-7990 Ribes, Amparo 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 131, 19 (2014), [8 pp.] J. appl. polym. sci. JOURNAL OF APPLIED POLYMER SCIENCE 0021-8995 1789048 http://zaguan.unizar.es/record/171287/files/texto_completo.pdf Postprint 446923 http://zaguan.unizar.es/record/171287/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:171287 articulos driver 2026-05-20-08:31:32 ARTICLE