Novel hydroxyapatite coating on new porous titanium and titanium-HDPE composite for hip implant

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DOIResolve DOI: http://doi.org/10.1016/j.surfcoat.2007.10.040
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TypeArticle
Journal titleSurface and Coatings Technology
ISSN0257-8972
Volume202
Issue13
Pages29602968; # of pages: 9
SubjectTitanium; Composite; Hydroxyapatite; Electrochemical activation; Nanostructure
AbstractPorous titanium (Ti) and Ti-high density polyethylene (Ti-HDPE) composite were investigated as new hip implant materials to increase the biomechanical compatibility by promoting a matching modulus of elasticity between hip stem and human bone. Surfaces of both materials were modified to increase its bioactivity and biocompatibility through electrochemical activation treatment and deposition of hydroxyapatite (HA) coating. The electrochemical activation treatment of both materials in 10 M NaOH solution created a bone-like porous nanostructure across the surfaces, thus enhancing the growth of natural bone. A top layer with nanometer-pores and TiO2 was formed during the activation process, creating a favorable and prerequisite condition conducive to the formation of hydroxyapatite coating. Furthermore, a layer of hydroxyapatite, a bioactive and biocompatible bioceramics that is the main component of natural bone, was deposited on the porous Ti and Ti-HDPE composite through a novel chemo-biomimetic method. The formed coating was characterized through TEM as a nanometer scale crystalline.
Publication date
LanguageEnglish
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NPARC number21274312
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Record identifier0909c638-de75-4b5c-8224-81b8d4cdd482
Record created2015-03-09
Record modified2016-05-09
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