Ageing of UHMWPE in presence of simulated synovial fluid
Article dans une revue avec comité de lecture
Date
2021Journal
Polymer Degradation and StabilityAbstract
In this paper, the biomedical grade Ultra High Molecular Weight Polyethylene (UHMWPE) has been soaked at different temperatures in Simulated Synovial Fluid (SSF); diffusion coefficient, hardness, roughness and wettability has been evaluated. Then, the 37°C (body temperature) soaked-polyethylene sample was aged at 80°C and monitored by InfraRed spectroscopy (oxidation trackers) and GPC (for molar mass changes) to observe the long-term degrading action of SSF. Finally, a kinetic model has been performed to simulate the ageing. Results highlighted as SFF smooths the material's surface, diffusing within the polymer helped by the temperature growth. The oxidation kinetic study stated that PE is more degraded by SSF with a significant decrease of molecular weight of a factor 2 if helped by the ageing temperature of 80°C. Simulation models are effective to theoretically reproduce pro-degradation mechanisms induced by SSF on UHMWPE at 80°C.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureHUANG, Jing; DAVID, Adelina; LE GAC, Pierre-Yves; LORTHIOIR, Cédric; COELHO, Cristina; RICHAUD, Emmanuel (Elsevier, 2019)This paper reports chemical changes that occur in polydicyclopentadiene during thermal oxidation at several temperatures and oxygen pressures. A particular attention was paid to the double bond consumption since these ...
-
Article dans une revue avec comité de lectureFRANÇOIS-HEUDE, Alexandre; RICHAUD, Emmanuel; GUINAULT, Alain; DESNOUX, Eric (Wiley, 2015)The kinetic model, established in a previous article (François-Heude et al., J. Appl. Polym. Sci., in press) to predict the homogeneous oxidation in iPP films typically thinner than 100 µm, is now extended to simulate the ...
-
Article dans une revue avec comité de lectureRICHAUD, Emmanuel; FAYOLLE, Bruno; VERDU, Jacques (Elsevier, 2011)This article deals with polypropylene stabilization by hindered 2,6-di-tert-butylphenols. Two aspects are mainly considered: the influence of stabilizer structure, of its concentration and temperature on induction period ...
-
Article dans une revue avec comité de lectureRICHAUD, Emmanuel; OKAMBA-DIOGO, Octavie; FAYOLLE, Bruno; VERDU, Jacques; GUILMENT, Jean; FERNAGUT, François (Elsevier, 2013)The literature on oxidation kinetics of polyamides and model compounds has been reviewed in order to try to extract suitable information for non-empirical kinetic modeling. Polyamide characteristics are systematically ...
-
Article dans une revue avec comité de lectureOKAMBA-DIOGO, Octavie; RICHAUD, Emmanuel; VERDU, Jacques; FERNAGUT, François; GUILMENT, Jean; FAYOLLE, Bruno (Elsevier, 2014)The present article reports a study of thermal oxidation of unstabilized polyamide 11 films at several temperatures (90–165 °C) under atmospheric pressure and under various oxygen pressures (up to 1.6 MPa) at 110 °C. The ...