Prospects for Using a Binding Agent to Improve the Adhesion of a Bioactive Coating on Surfaces with Different Structures

A series of works on the application of biologically active coatings (hydroxyapatite (HAP), fluorapatite) to matrices of different structures and porosity (porous and compact titanium and nickel, glass, ceramics) are carried out. The possibility of using a colloidal suspension of HAP and an aqueous suspension of crystalline apatite in combination with gelatin as a bioactive material is studied. The qualitative and quantitative composition of the coating material suitable for application is selected. The surface morphology of the coatings is studied using scanning electron microscopy. The adhesive strength of the coatings is determined by the method of centrifugal separation. It is shown that the use of hydroxyapatite/fluorapatite powder in combination with gelatin as a bioactive coating contributes to the formation of a uniform developed surface not only on porous, but also on smooth surfaces, including glass substrates; it can significantly reduce the time of coating formation and significantly increase its adhesive strength.