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Research on polymer composites of replacement prostheses
by Maoquan Xue
International Journal of Biomedical Engineering and Technology (IJBET), Vol. 7, No. 1, 2011
Abstract: The research on modified articular cartilage UHMWPE and PEEK reinforced with the ceramic particles, as well as fibre, ion implantation and ?-ray irradiation is presented. Research results show that pure polymer cartilage materials produce a large number of fatigue cracks during the wear process. Ceramic particles and fibre-filled reinforcement improved the spatial structure of the material, the wear mechanism was characterised by the mild fatigue wear. Ion implantation and ?-ray irradiation modified the articular cartilage by breaking the molecular main chains, then, by re-crosslinking the free radicals, this structure improved the mechanical properties and tribological properties of materials.
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