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首页> 外文期刊>Biomaterials >SURFACE MODIFICATIONS OF A GLASS AND A GLASS-CERAMIC OF THE MGO-3CAO-CENTER-DOT-P2O5-SIO2 SYSTEM IN A SIMULATED BODY FLUID
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SURFACE MODIFICATIONS OF A GLASS AND A GLASS-CERAMIC OF THE MGO-3CAO-CENTER-DOT-P2O5-SIO2 SYSTEM IN A SIMULATED BODY FLUID

机译：模拟体液中MGO-3CAO-CENTER-DOT-P2O5-SIO2系统的玻璃表面改性和玻璃陶瓷

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A glass of nominal composition (wt%) 17.25 MgO-52.75 3CaO P2O5-30 SiO2 and a glass-ceramic obtained from it showed surface modifications when immersed in an acellular medium having a composition similar to that of human blood plasma. A (Ca, P)-rich layer, with an approximate Ca/P atomic ratio of 1.7, identified as hydroxyapatite, developed on both samples. The precipitated film on the glassy sample was weakly bonded, whereas that formed on the glass-ceramic was strongly adherent. The apatite precipitated during the in vitro tests on both samples grew as a needle-like structure with crystals about 150-200 nm long and 50-70 nm thick, as measured on specimens soaked for 1 month in the simulated body fluid (SBF). The presence of calcium and phosphate ions in the SBF contributed to the precipitation of the (Ca, P)-rich layers on both specimens. [References: 38]
机译：标称组成（重量％）为17.25 MgO-52.75 3CaO P2O5-30 SiO2的玻璃和由其制得的玻璃陶瓷在浸入组成与人血浆相似的无细胞培养基中时显示出表面改性。在两个样品上均形成了富含Ca（P）的层，其Ca / P原子比约为1.7，被识别为羟基磷灰石。在玻璃状样品上的沉淀膜是弱结合的，而在玻璃陶瓷上形成的膜是牢固粘附的。在浸泡在模拟体液（SBF）中浸泡1个月的样品上测得，在两个样品的体外测试过程中沉淀的磷灰石均生长为针状结构，晶体长约150-200 nm，厚约50-70 nm。 SBF中钙离子和磷酸根离子的存在有助于两个样品中富含（Ca，P）层的沉淀。 [参考：38]

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