Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Gamma-Irradiated Ultra-high Molecular Weight Polyethylene : Anisotropic Changes in Crystallinity and Crosslinking

  • Lee, Kwon-Yong (University of Kentucky, Division of Orthopaedic Surgery)
  • Published : 1997.06.01
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Abstract

The effect of gamma-irradiation sterilization on molecular structural changes in orthopaedic surgical-grade polyethylene was studied. The relative crystallinity ud. percent crosslinking of the substance increased as a result of the gamma irradiation and varied anisotropically as a function of depth. Samples from the articulating surfaces showed 5% Venter relative crystallinity than those from the mid-sections, whereas samples from the mid-sections exhibited 15% greater crosslinking than those from the surfaces. These anisotropic variations are discussed in assDciation with oxidation.

Keywords

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