Sol-Gel Mediated Synthesis of Pure Hydroxyapatite at Different Temperatures and Silver Substituted Hydroxyapatite for Biomedical Applications

Kalaiselvi, R. Mathammal, P. Anitha
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引用次数: 5

Abstract

Owing to excellent bio compatibility and bioactivity of Hydroxyapatite (HAP), it plays a vital role in the field of medicine such as orthopaedic and dental applications. In the present work sol- gel method of synthesizing nano Hydroxyapatite using Calcium hydroxide as calcium source and Orthophosphoric acid as Phosphorus source and maintain the Ca:P ratio as 1:67. The synthesized samples are calcined under different temperature ranging from 400 to 700°C. The crystalline size of the synthesised samples are calculated using X-ray diffraction (XRD), Morphology of the surface by scanning electron microscope (SEM) and (TEM), existence of functional groups were revealed by Fourier transformation IR spectroscopy (FTIR). Thus the studies suggest that the Hydroxyapatite calcined at high temperatures is the best biomaterial for dental applications. Then it was substituted with silver and further studied with XRD, SEM, EDAX, FTIR, TEM, antimicrobial activity.
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溶胶-凝胶在不同温度下合成纯羟基磷灰石及银取代羟基磷灰石在生物医学上的应用
羟基磷灰石(Hydroxyapatite, HAP)具有良好的生物相容性和生物活性,在骨科、牙科等医学领域发挥着重要作用。本文以氢氧化钙为钙源,正磷酸为磷源,保持钙磷比为1:67,采用溶胶-凝胶法合成纳米羟基磷灰石。合成的样品在400 ~ 700℃的不同温度下进行煅烧。用x射线衍射(XRD)计算了合成样品的晶粒尺寸,用扫描电镜(SEM)和透射电镜(TEM)分析了表面形貌,用傅立叶变换红外光谱(FTIR)分析了官能团的存在。因此,高温煅烧羟基磷灰石是牙科应用的最佳生物材料。然后用银取代,用XRD、SEM、EDAX、FTIR、TEM、抗菌活性等手段对其进行了进一步研究。
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