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In vitro study bioactivity of HA/UHMWPE nanocomposites

Authors Fang, Liming HKUST affiliated (currently or previously)
Leng, Yang View this author's profile
Gao, Ping View this author's profile
Issue Date 2007
Source Key Engineering Materials , v. 342, 2007, p. 701-704
Summary 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 urn 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.
ISSN 1013-9826
ISBN 978-0-87849-436-1
Language English
Format Conference paper
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