Influence of mechanochemical treatment on thermal and structural properties of silica–collagen and hydroxyapatite–collagen composites

The paper presents the results of research on a series of composite materials based on hydroxyapatite, silica gel and collagen as biologically active substances. Their preparation was made using mechanical energy in accordance with the principles of “green chemistry”. Mechanochemical treatment was conducted in a planetary mill with different rotations of milling (200 and 400 rpm) and various periods of time (30, 60 and 120 min). Temperature and pressure changes generated during the mechanochemical treatment were recorded. The obtained composites were analyzed using the low-temperature nitrogen adsorption/desorption method and thermal analysis (TG/DTA). Very interesting and promising results were obtained encouraging further research in this area.