000171286 001__ 171286
000171286 005__ 20260520092808.0
000171286 0247_ $$2doi$$a10.1016/j.msec.2012.08.028
000171286 0248_ $$2sideral$$a79876
000171286 037__ $$aART-2013-79876
000171286 041__ $$aeng
000171286 100__ $$0(orcid)0000-0001-9972-0902$$aMedel, F. J.$$uUniversidad de Zaragoza
000171286 245__ $$aMicrostructure, themooxidation and mechanical behavior of a novel highly linear, vitamin E stabilized, UHMWPE
000171286 260__ $$c2013
000171286 5203_ $$aA novel, vitamin E-stabilized, medical grade ultra-high molecular polyethylene, MG003 (DSM Biomedical; The Netherlands), has been very recently introduced for use in total joint replacements. This homopolymer resin features averagemolecular weight similar to that of conventional GUR 1050 resin (5.5–6*106 g/mol), but a higher degree of linearity. The aim of this study was to characterize the microstructure, thermal and thermooxidation properties as well as the mechanical behavior of this novel MG003 resin before and after gamma irradiation in air to 90 kGy. For this purpose, a combination of experimental techniques were performed including differential scanning calorimetry (DSC), thermogravimetry (TG), transmission electron microscopy (TEM), X-Ray Diffraction, electron paramagnetic resonance (EPR), and uniaxial tensile tests. As-consolidated MG003 materials exhibited higher crystalline contents (~62%), transition temperatures (~140 °C), crystal thickness (~36 nm), yield stress (~25 MPa) and elastic modulus (~400 MPa) than GUR 1050 controls (55%, 136 °C, 27 nm, 19 MPa, and
353 MPa, respectively). Irradiation produced similar changes in bothMG003 and GUR 1050 materials, specifically increased crystallinity (63% and 60%, respectively), crystal thickness (39 nm and 30 nm), yield stress (27 MPa and 21 MPa), but, aboveof all, lossof elongationtobreakage (down to442and469%, respectively). Thermogravimetric and EPR results suggest comparable susceptibilities to oxidation for both MG003 and GUR 1050 polyethylenes. Based on the present findings, MG003 appears as a promising alternative medical grade polyethylene and it may satisfactorily contribute to the performance of total joint replacements.
000171286 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000171286 590__ $$a2.736$$b2013
000171286 591__ $$aMATERIALS SCIENCE, BIOMATERIALS$$b15 / 29 = 0.517$$c2013$$dQ3$$eT2
000171286 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000171286 700__ $$aMartínez-Morlanes, M. J.
000171286 700__ $$0(orcid)0000-0003-3449-4929$$aAlonso, P. J.
000171286 700__ $$0(orcid)0000-0003-1029-3751$$aRubín, J.$$uUniversidad de Zaragoza
000171286 700__ $$0(orcid)0000-0002-4502-7990$$aPascual, F. J.
000171286 700__ $$0(orcid)0000-0002-3125-5802$$aPuértolas, J. A.$$uUniversidad de Zaragoza
000171286 7102_ $$15004$$2545$$aUniversidad de Zaragoza$$bDpto. Ingeniería Mecánica$$cÁrea Ingeniería Mecánica
000171286 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000171286 773__ $$g33, 1 (2013), 182-188$$pMater. sci. eng., C, Biomim. mater., sens. syst.$$tMaterials science & engineering. C, Biomimetic materials, sensors and systems$$x0928-4931
000171286 8564_ $$s951482$$uhttps://zaguan.unizar.es/record/171286/files/texto_completo.pdf$$yVersión publicada
000171286 8564_ $$s2939919$$uhttps://zaguan.unizar.es/record/171286/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000171286 909CO $$ooai:zaguan.unizar.es:171286$$particulos$$pdriver
000171286 951__ $$a2026-05-20-08:31:31
000171286 980__ $$aARTICLE