COMPARATIVE CHARACTERISTICS OF COMPOSITE MATERIALS BASED ON A MIXTURE OF CALCIUM PHOSPHATES AND POLYSACCHARIDES
We have obtained composite materials based on a mixture of calcium phosphates and a polymer matrix (sodium alginate, chitosan). We investigated their composition, morphology, and dynamic dissolution behavior. A comparative analysis of the properties of composites was carried out depending on the nature of the matrix, the filler / matrix ratio and the drying temperature. It was found that the introduction of a powder material into the biopolymer matrix does not change its composition, regardless of the nature of the polymer. In this case, the specific surface area of the composite material, in which sodium alginate acts as a matrix, increases in comparison with the powder material, and decreases for the material based on chitosan. It has been established that the resorbability of composites decreases with an increase in the drying temperature. At the same time, with an increase in the filler / matrix ratio, the resorbability of the composite, in which sodium alginate acts as a matrix, decreases, while chitosan increases.