Preparation of biocomposites based on nanoscale hydroxyapatite with titanium compounds

Abstract

The article discusses the possibility of obtaining a hardened composite material with a porous structure based on nanostructured hydroxyapatite (HAP) synthesized by precipitation from a solution. The new material by the mechanochemical synthesis of HAP with reinforcing additives of titanium compounds was obtained. The synthesized samples are certified using some modern physico-chemical methods of analysis. The influence of the qualitative and quantitative composition of the composite on the sintering processes, porosity, strength characteristics, the degree of dispersion and morphology of the studied samples is shown. It has been experimentally established that a sample based on hydroxyapatite, reinforced with non-stoichiometric titanium dioxide of the composition Ca10(PO4)6(OH)2 – 15%TiOx has the maximum strength characteristics and constant composition. The composite material, having a dense uniform structure with a high degree of crystallinity and a developed porosity, is a promising material for further research in order to introduce it into medical practice. A patent application has been filed on the developed composite material.

Keywords

• hydroxyapatite
• titanium oxide
• titanium compounds
• composite biomaterials
• crystallinity
• microhardness