| New nano−structure of potassium−substituted hydroxyapatite/ β−TCP/CPP mixture |
| Paper ID : 1683-UFGNSM-FULL |
| Authors: |
|
Mohammad Chahkandi * 96179-76487 |
| Abstract: |
| The new triphasic potassium−substituted hydroxyapatite (KHAP), β−tricalcium phosphate (β−TCP), and calcium pyrophosphate (CPP) proportions using easy sol−gel method were synthesized. The prepared powders was characterized by X–ray diffraction (XRD), Fourier transform infrared (FTIR), Differential thermal behavior (DTA) analysis, and Energy Dispersive X–ray Analysis (EDXA). In addition, the size of nano particle and micro–strain of the synthesized samples using Williamson–Hall (W–H) plots and transmission electron microscopy (TEM) were measured. The (K+Ca)/P molar ratio in the KHAP samples was around 1.67. Actually, the incorporation of potassium in the calcium deficient apatites was accompanied by the formation of mentioned triphasic mixture ceramics, upon calcination from 400 to 600 °C. However, increasing of the firing temperature to 700 °C resulted in growth of the HA content as the dominant phase. The XRD peaks of these prepared nano−structures show same pattern with pure HAp phase with hexagonal structure and P63/m space group. Moreover, the evaluated particle size of synthesized samples by W–H and TEM methods are in good agreement as 25–95 nm. |
| Keywords: |
| potassium−substituted; Hydroxyapatite/ β−TCP/CPP; Nano-particles; Sol–gel. |
| Status : Paper Accepted (Poster Presentation) |
