Abstract
Hydroxy apatite (HA) is a biocompatible material used as bone-substitute materials in both orthopedics and dentistry due to its excellent osteo-conductive and chemical composition similar to that of the inorganic part of bone in comparison with other implant materials . HA (S1) and Cr loaded hydroxy apatite (S2, S3, S4 and S5) of different chromium concentrations have been prepared. many techniques used to analyze the changes occurred due to the substitution. The XRD (X-ray diffraction) and FTIR (Fourier transform infrared radiation )spectroscopy were used as analytical techniques for the prepared HA and Cr loaded HA. The effect of the heat treatment on structural change of the samples was examined by DTA. It was found that all the samples have the same crystalline structure. The crystallinity of the samples decreased as the chromium ions concentration increase.
Highlights
Substitution of foreign ions in the crystal of CaPs occurs frequently
Chromium-loaded calcium-hydroxyapatite prepared utilizing the exchange properties of apatite, Hydroxy apatite (HA) nanoparticles have been investigated by using XRD, FTIR, Chemical analysis and laser diffraction method
We have demonstrated that metal ions reduced the quantity of mineral formed at the surface of the polymer and decreased the ratio Ca/P by 1.12, 1.05- and 1.08-fold for Cr2+, Cr3+ and Ni2+ respectively
Summary
Substitution of foreign ions in the crystal of CaPs occurs frequently. In particular, the high stability and flexibility of apatite structure acouts for the great variety of possible cationic and anionic substitution. Chromium-loaded calcium-hydroxyapatite prepared utilizing the exchange properties of apatite, HA nanoparticles have been investigated by using XRD, FTIR, Chemical analysis and laser diffraction method. They found that the synthesized apatite is calcium deficient and that their specific surface area decrease slightly by increasing the Cr3+ loading. The present work is concerned and interested in seaking for a biomaterial suitable, biophysically and physiologically, to meet beneficial medical uses and applications by synthesize calcium hydroxyl apatite
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