PMID: 9429092Jan 16, 1998Paper

Influence of sterilization by gamma irradiation and of thermal annealing on creep of hydroxyapatite-reinforced polyethylene composites

Journal of Biomedical Materials Research
J SuwanprateebW Bonfield

Abstract

Sterilization of medical devices by gamma (gamma)-irradiation is common. The effect of irradiation on a bone replacement material, HAPEX (hydroxyapatite-reinforced polyethylene composite), was investigated. Unfilled and hydroxyapatite-filled polyethylene at 0.20 and 0.40 filler volume fractions were gamma-irradiated at 2.5 Mrad, and the modified properties were studied by differential scanning calorimetery, isochronous experiments, and creep tests. The effect of thermal annealing of the samples from 140 degrees C also was examined. The results suggest that both irradiation and annealing increase creep resistance of the materials. These are associated with the formation of crosslinks and an increase in crystallinity, respectively.

References

Jan 1, 1988·Annals of the New York Academy of Sciences·W Bonfield

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Citations

Jan 17, 2008·Journal of Materials Science. Materials in Medicine·J SuwanprateebW Suwanpreuk
Jul 2, 2010·Journal of the Royal Society, Interface·K E Tanner
Jul 22, 2009·Journal of Biomaterials Science. Polymer Edition·Rory E SallachElliot L Chaikof
Nov 28, 2015·Journal of Materials Science. Materials in Medicine·Xiangfeng LiXingdong Zhang
Jun 26, 2010·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·F A ZuletaP N De Aza
Jun 17, 2004·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Michael DiCiccoSusan A Jansen
Jul 20, 2006·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Chih-Hung TsaiChien-Ping Ju

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