Effect of Nb and Al on in vitro dissolution behavior and structure of Na2O-MgO CaO-P2O5 glasses

In vitro dissolution, structure, and thermal properties of the glass series Na2O-MgO CaO Nb2O5 -Al2O3-P2O5 were studied. The dissolution behavior in phosphate-buffered saline (PBS) confirmed the potential bioactive properties of tested glasses. The dissolution process was found to depend on the Al,...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2022-06, Vol.585, p.121544, Article 121544
Main Authors: Wójcik, Natalia Anna, Wolff, Stefania, Karczewski, Jakub Lech, Rutkowska, Małgorzata, Ali, Sharafat
Format: Article
Language:English
Subjects:
Glass Technology
Glasteknologi
Na-Mg-Ca-Al-Nb-P-O glass In vitro dissolution FTIR Thermal properties
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Summary:In vitro dissolution, structure, and thermal properties of the glass series Na2O-MgO CaO Nb2O5 -Al2O3-P2O5 were studied. The dissolution behavior in phosphate-buffered saline (PBS) confirmed the potential bioactive properties of tested glasses. The dissolution process was found to depend on the Al, Nb, and Mg contents. Al, respectively, suppresses the Nb and accelerates the Mg release process from the glasses. Moreover, Al stays highly bonded in the phosphate network during 14 days of immersion. In all glasses, the phosphate network was found to be highly disrupted and built mostly of Q1 units. Al and Mg addition decreases the polymerization of the glass network. The Nb addition effect was found to be the opposite. Thermal properties were correlated mostly with the Nb and Al contents. However, the fragility index of glasses increases with the content of P and Al.
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2022.121544