SURFACE MODIFICATION OF CALCIUM-PHOSPHATE CERAMICS WITH SILANE COUPLING REAGENTS

Surface of calcium phosphate ceramics was modified with silane coupling reagents using reflux method, The results of thermal analyses and infrared and mass spectra suggested that surface hydroxy groups oi the ceramics form covalent bonds with silane coupling reagent molecules. Regardless oi the reagent species, almost the same number of organic groups was introduced when the reaction conditions were the same. The zeta potential of the modified ceramics varied with the number of the introduced organic groups. This result suggests that the cell compatibility oi the ceramics can be changed by controlling the amount of the introduced organic groups.