Influence of textural properties on biomineralization behavior of mesoporous bioactive glasses

Q1 Materials Science

Biomedical Glasses Pub Date : 2015-07-16 DOI:10.1515/bglass-2015-0002

Ashok Kumar, S. Murugavel

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引用次数: 4

Abstract

Abstract A new method of calcination for the sol-gel derived bioactive glass sample has been developed to produce superior textural and bioactive properties. Based on this method, mesoporous 67.4 SiO2-25 Na2O-5 CaO- 2.6 P2O5 (mol.%) bioactive glasses (MBGs) have been synthesized through acid assisted sol-gel technique followed by evaporation induced self-assembly (EISA) process, commonly used for obtaining bioactive glasses. Moreover, the use of microwave irradiation has been compared with that of conventional heat treatment for a particular quaternary composition,which has allowed the homogeneous spatial distribution of heat and to obtain smaller, uniform pore sizes with high surface area. The distinctions between the two methods of calcination have been observed in the structural, morphology and textural characteristics. The superior textural characteristics have allowed the rapid dissolution of MBGs followed by development of nanocrystalline hydroxycarbonate apatite (HCA) layer. In vitro bioactive analyses on both MBGs have revealed a rapid formation HCA layer with distinct behavior on the biomineralization process. The difference in the behavior of biomineralization process is attributed to the kinetics of supersaturation of the biological medium.

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介孔生物活性玻璃的结构特性对生物矿化行为的影响

摘要:为制备具有优异结构和生物活性的溶胶-凝胶生物活性玻璃样品，开发了一种新的煅烧方法。在此基础上，采用酸辅助溶胶-凝胶技术，采用蒸发诱导自组装(EISA)法制备了67.4 SiO2-25 Na2O-5 CaO- 2.6 P2O5 (mol.%)介孔生物活性玻璃(MBGs)。此外，还将微波辐照的使用与传统热处理的方法进行了比较，发现微波辐照可以使热量的空间分布均匀，并获得更小、均匀的孔径和高表面积。两种煅烧方法在结构、形态和质地特征上的区别已经被观察到。优越的结构特性使MBGs快速溶解，形成纳米羟基碳酸盐磷灰石(HCA)层。两种MBGs的体外生物活性分析表明，HCA层的快速形成在生物矿化过程中具有不同的行为。生物矿化过程行为的差异归因于生物介质的过饱和动力学。

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来源期刊

Biomedical Glasses Materials Science-Surfaces, Coatings and Films

自引率

0.00%

发文量

审稿时长

17 weeks

期刊介绍： Biomedical Glasses is an international Open Access-only journal covering the field of glasses for biomedical applications. The scope of the journal covers the science and technology of glasses and glass-based materials intended for applications in medicine and dentistry. It includes: Chemistry, physics, structure, design and characterization of biomedical glasses Surface science and interactions of biomedical glasses with aqueous and biological media Modeling structure and reactivity of biomedical glasses and their interfaces Biocompatibility of biomedical glasses Processing of biomedical glasses to achieve specific forms and functionality Biomedical glass coatings and composites In vitro and in vivo evaluation of biomedical glasses Glasses and glass-ceramics in engineered regeneration of tissues and organs Glass-based devices for medical and dental applications Application of glasses and glass-ceramics in healthcare.