Preparation and characterization of some substituted bioglasses and their ceramic derivatives from the system SiO2-Na2O-CaO-P2O5 and effect of gamma irradiation
Preparation and characterization of some substituted bioglasses and their ceramic derivatives from the system SiO2-Na2O-CaO-P2O5 and effect of gamma irradiation
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DOI：
10.1016/j.matchemphys.2008.02.011
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发表时间：
2008-08-15
影响因子：
4.6
通讯作者：
ElKheshen, Amany
中科院分区：
文献类型：
--
作者：
ElBatal, Fatma H.;ElKheshen, Amany
制备了以亨氏生物玻璃(R)为基础，含有一些取代氧化物的化学组成的玻璃，并通过热处理进行了晶化。用傅里叶变换红外光谱(FTIR)对这些玻璃和相应的微晶玻璃进行了吸收和反射表征。用0.1MHCl或NaOH溶液或蒸馏水对所制备的玻璃和结晶样品进行了颗粒状的化学腐蚀试验。通过红外光谱和X射线衍射实验研究了羟基磷灰石层的形成，结果表明，在所有被测玻璃中，晶态的钠钙硅酸盐相(1Na(2)O中心点2CaO中心点3SiO(2))是主相，此外还有一些次要相，这取决于引入的取代氧化物。腐蚀行为取决于引入的氧化物的类型以及它们在浸出液中自由离子交换和溶解的能力。(C)2008爱思唯尔B.V.保留所有权利。
Glasses having chemical composition based on Hench's bioglass (R) and with some substituted oxides were prepared and crystallized through thermal treatments. These glasses and corresponding glass-ceramics were characterized by Fourier transform infrared spectroscopy (FTIR) either through absorption or reflection studies. Chemical corrosion of the prepared glassy and crystalline samples as grains was examined by the action of 0.1 M HCl or NaOH solutions or by distilled water. Also, UV-vis absorption measurements were carried out before and after successive gamma rays to reveal their response to ionizing radiation.The formation of hydroxyapatite layer was checked by FTIR studies and X-ray diffraction experiments which show that the crystalline soda lime silicate phase (1Na(2)O center dot 2CaO center dot 3SiO(2)) is separated as the main phase in all tested glasses beside some secondary phases depending on the introduced substituted oxide. The corrosion behavior was found to vary depending on the type of the introduced oxides and their ability to freely ion exchange and dissolve in the leaching solution. (C) 2008 Elsevier B.V. All rights reserved.