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Structure, energetics and bioactivity of silicon oxycarbide-based amorphous ceramics with highly connected networks

Ionescu, Emanuel and Sen, Sabyasachi and Mera, Gabriela and Navrotsky, Alexandra (2018):
Structure, energetics and bioactivity of silicon oxycarbide-based amorphous ceramics with highly connected networks.
In: Journal of the European Ceramic Society, Elsevier Science Publishing, pp. 1311-1319, 38, (4), ISSN 09552219,
DOI: 10.1016/j.jeurceramsoc.2017.10.002,
[Online-Edition: https://doi.org/10.1016/j.jeurceramsoc.2017.10.002],
[Article]

Abstract

Mg and Ca substituted silicon oxycarbides are investigated with respect to their network architecture, enthalpy of formation and bioactivity. The synthesized materials have highly connected structural network with an open architecture and a minor but critical fraction of depolymerized Q-species. This combination of structural features allows for providing bioactivity at the same time with enhanced thermo-mechanical robustness and crystallization resistance. It is argued that silicon oxycarbide amorphous ceramics may consequently serve as model compounds for developing rational design concepts for advanced bioactive glasses.

Item Type: Article
Erschienen: 2018
Creators: Ionescu, Emanuel and Sen, Sabyasachi and Mera, Gabriela and Navrotsky, Alexandra
Title: Structure, energetics and bioactivity of silicon oxycarbide-based amorphous ceramics with highly connected networks
Language: English
Abstract:

Mg and Ca substituted silicon oxycarbides are investigated with respect to their network architecture, enthalpy of formation and bioactivity. The synthesized materials have highly connected structural network with an open architecture and a minor but critical fraction of depolymerized Q-species. This combination of structural features allows for providing bioactivity at the same time with enhanced thermo-mechanical robustness and crystallization resistance. It is argued that silicon oxycarbide amorphous ceramics may consequently serve as model compounds for developing rational design concepts for advanced bioactive glasses.

Journal or Publication Title: Journal of the European Ceramic Society
Volume: 38
Number: 4
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: Bioactive glasses, Polymer-derived ceramics, Silicon oxycarbides, Network architecture, Network connectivity
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Date Deposited: 17 Dec 2018 15:55
DOI: 10.1016/j.jeurceramsoc.2017.10.002
Official URL: https://doi.org/10.1016/j.jeurceramsoc.2017.10.002
Funders: German Science Foundation (DFG, Bonn, Germany) , Grant Number IO 64/9-1 ,, Alexander von Humboldt Foundation (project "Development and characterization of new family polymer-derived glasses (PDGs) and glass-organic composites with high bioactivity for bone tissue repair"), GM acknowledges financial support from Darmstadt University of Technology (re-entry research fellowship)., The work at UC Davis was supported by the Deep Carbon Observatory of the Alfred P. Sloan Foundation.
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