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Influence of Manganese on Stability and Particle Growth of Hydroxyapatite in Simulated Body Fluid by Ľ. Medvecký; R. Štulajterová; Ľ. Parilák; J. Trpčevská; J. Ďurišin; S.M. Barinov is a Materials Science article available to read on EtoBox.

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The Mn substituted hydroxyapatites (HAPMn) were prepared by coprecipitation of manganese and calcium with PO 4 3-ions (the content of Mn up to 0.25 wt.%) or by ion-exchange with 14% exchange of Ca 2+ ions in hydroxyapatites (HAP). The partially dissolution of hydroxyapatite particles with simultaneously change of their morphology was confirmed during ion exchange. All HAPMn had the hydroxyapatite structure without the presence of any secondary phases. The decomposition of the hydroxyapatite structure in manganese substituted HAP to tricalcium phosphate begins above the temperature of 800 • C. Origin HAP particles (before ion-exchange) and HAPMn prepared by precipitation had globular morphology but the stick shape of individual particles of HAPMn was found after ion-exchange. High concentration of manganese at the surface of hydroxyapatite particles after ion-exchange causes rapid decrease in growth rate of hydroxyapatite in simulated body fluid (SBF) solutions. The particle aggregates of pure HAP and HAPMn prepared by coprecipitation have globular morphology. Aggregates of ion-exchange prepared HAPMn are represented by the mixture of spherical and plate-like shapes. The shape of ag

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Author

Ľ. Medvecký; R. Štulajterová; Ľ. Parilák; J. Trpčevská; J. Ďurišin; S.M. Barinov

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0927-7757)

Published

2006

Language

EN

Field

Materials Science (Physical Sciences)