In this study, effect of phosphate solution on setting reaction of α-tricalcium phosphate (α-TCP) spheres was investigated by employing three phosphate solutions: 0.2 mol/L Na2HPO4, 0.2 mol/L NaH2PO4 and 0.2 mol/L MCPM-0.1 mol/L H3PO4 solution. For the basic study on etting property, two α-TCP spheres were placed together then reacted to different phosphate solutions at 37°C for 10 minutes. When mixed with 0.2 mol/L MCPM-0.1 mol/L H3PO4 solution, two α-TCP spheres can be set to form brushite crystals at the interface while they show no reactivity with Na2HPO4 or NaH2PO4 solution. In order to investigate the setting mechanism between α-TCP spheres, set two-sphere specimens were evaluated in terms of crystal structure and surface morphology. Thus, it was concluded that the reaction between α-TCP spheres and 0.2 mol/L MCPM-0.1 mol/L H3PO4 solution resulted in forming of brushite crystals on the surface of α-TCP sphere and the interlocking of brushite crystals is the setting mechanism between α-TCP spheres. This study shows the feasibility to fabricate interconnected porous cement which mimics the morphology of natural bone by connecting many α-TCP spheres together.
|Number of pages||5|
|Journal||Journal of the Australian Ceramic Society|
|Publication status||Published - Jan 1 2010|
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry