The biotribological behaviour researches on the α-tocopherol-doped and gamma-irradiated UHMWPE. (17th May 2010)

• Record Type: Journal Article
• Authors: Ni, Zifeng; Ge, Shirong
• Is Part Of: International journal of surface science and engineering. Volume 4:Number 3(2010)
• Page Start: 227
• Page End: 236
• Publication Date: 2010-05-17
• Subjects: irradiated UHMWPE -- ultra-high molecular weight polyethylene -- biotribology -- alpha-tocopherol -- cross-linking -- oxidation -- antioxidants -- mechanics -- wear -- crystallinity -- hardness -- gel content -- elasticity -- plasticity -- accelerated aging; Surfaces (Physics) -- Periodicals; Surface chemistry -- Periodicals; Surfaces (Technology) -- Periodicals; Tribology -- Periodicals; 530.417
• Languages: English
• ISSNs: 1749-785X

Abstract

The effect of antioxidant α-tocopherol on the mechanics and wear of UHMWPE was investigated. It is shown that the UHMWPE doped with α-tocopherol increases its crystallinity and hardness but decreases its gel content. Incorporation of α-tocopherol increases the elastic and plastic properties of the irradiated UHMWPE sample. Accelerated aging results in severely deterioration of the mechanical properties of irradiated UHMWPE samples. But the α-tocopherol doped UHMWPE sample shows good anti-oxidation property. Wear resistance of α-tocopherol doped irradiated UHMWPE sample was much better compared to the irradiated UHMWPE sample.