▎ 摘　　要

Interactions between calcium and phosphorus salts, graphene oxide (GO), and collagen (COL) in aqueous solutions have been studied in the CaCl2-(NH4)(2)HPO4-NH3-H2O-GO-COL system (25A degrees C) using the solubility (residual concentrations) method and pH measurements. Syntheses were shown to yield composites comprising nanocrystalline calcium hydroxyapatite Ca-10(PO4)(6)(OH)(2)) (HA), GO, and COL of empirical formula Ca-10(PO4)(6)(OH)(2) center dot xGO center dot yH(2)O center dot zCOL (x = 0.5, 1.0, or 2.0; y = 6.5-7.7; z = 3 or 5 wt %). Some physicochemical characteristics of synthesis products and the effects of the composite formulation on the crystallographic characteristics, sizes, and morphology of nanocrystalline hydroxyapatite (NCHA) were determined and some composition-structure-dispersion-property relationships in the HA/GO/COL composites have been analyzed using chemical analysis, X-ray powder diffraction, IR spectroscopy, thermogravimetry (TGA), differential scanning calorimetry (DSC), and electron microscopy.