In Vitro Study Bioactivity of HA/UHMWPE Nanocomposites

Abstract:

Bioactivity of hydroxyapatite reinforced ultrahigh molecular weight polyethylene (HA/UHMWPE) nanocomposites with HA volume content of 10~50 % was evaluated by simulated body fluid (SBF) immersion. The effect of HA content on the capability for calcium phosphate (Ca- P) induction was studied. It was found that Ca-P deposition covered the whole surface of the composite with 30 vol. % of HA after immersion for 1 day and the layer grew to around 10 0m thick in one-week immersion, while there was few nucleus formed for composites with HA content lower than 30 vol. % after one-week immersion. The Ca-P structure was identified as octacalcium phosphate (OCP) by SEM, TEM, and ToF-SIMS.

• Periodical: Key Engineering Materials (Volumes 342-343)
• Pages: 701-704
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.342-343.701
• Online since: July 2007
• Authors: Li Ming Fang, Yang Leng, Ping Gao
• Keywords: Bioactivity, Hydroxyapatite (HAP), Nanocomposite, Simulated Body Fluid (SBF), Ultra-High Molecular Weight Polyethylene UHMWPE

References

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500 1000 1500 m/z Counts -PO3 -PO2 Substrate.

[63] [79] - 3 2PO PO 0. 65/ 0. 70 0. 89 = =.

[60] 80 100.

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