Xie, Fangtong ; Gonzalo-Juan, Isabel ; Arango-Ospina, Marcela ; Riedel, Ralf ; Boccaccini, Aldo R. ; Ionescu, Emanuel (2019)
Apatite Forming Ability and Dissolution Behavior of Boron- and Calcium-Modified Silicon Oxycarbides in Comparison to Silicate Bioactive Glass.
In: ACS Biomaterials Science & Engineering, 5 (10)
doi: 10.1021/acsbiomaterials.9b00816
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The bioactivity of Ca and/or B modified silicon oxycarbides has been assessed in vitro upon immersion in SBF (simulated body fluid). In the context of the present work, bioactivity refers to the likeliness of hydroxyapatite crystallization (biomineralization) on the surface of a material when in contact with physiological fluids. The incorporation of Ca and B into the silicon oxycarbide glass network is found to increase its bioactivity, which seems to scale with the content of Ca; thus, SiOC glass with a relatively large Ca/Si molar ratio (i.e., 0.12) is shown to exhibit bioactive characteristics similar to those of the benchmark silicate bioactive glass of 45S5 composition. The release kinetics of the SiOC glasses modified with Ca and/or B during the SBF test was studied by inductively coupled plasma-optical emission spectroscopy. It has been observed that the Si release kinetics can be correlated with the Ca content in the SiOC glasses: SiOC based glasses modified with Ca exhibited low Si release activation energies (i.e., 0.07 eV), being comparable to that of 45S5 bioactive glass (i.e., 0.04 eV); whereas silicon oxycarbides without Ca modification showed higher activation energies for Si release (i.e., 0.27 eV).
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Xie, Fangtong ; Gonzalo-Juan, Isabel ; Arango-Ospina, Marcela ; Riedel, Ralf ; Boccaccini, Aldo R. ; Ionescu, Emanuel |
| Art des Eintrags: | Bibliographie |
| Titel: | Apatite Forming Ability and Dissolution Behavior of Boron- and Calcium-Modified Silicon Oxycarbides in Comparison to Silicate Bioactive Glass |
| Sprache: | Englisch |
| Publikationsjahr: | 4 September 2019 |
| Verlag: | American Chemical Society (ACS) |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | ACS Biomaterials Science & Engineering |
| Jahrgang/Volume einer Zeitschrift: | 5 |
| (Heft-)Nummer: | 10 |
| DOI: | 10.1021/acsbiomaterials.9b00816 |
| URL / URN: | https://pubs.acs.org/doi/10.1021/acsbiomaterials.9b00816 |
| Kurzbeschreibung (Abstract): | The bioactivity of Ca and/or B modified silicon oxycarbides has been assessed in vitro upon immersion in SBF (simulated body fluid). In the context of the present work, bioactivity refers to the likeliness of hydroxyapatite crystallization (biomineralization) on the surface of a material when in contact with physiological fluids. The incorporation of Ca and B into the silicon oxycarbide glass network is found to increase its bioactivity, which seems to scale with the content of Ca; thus, SiOC glass with a relatively large Ca/Si molar ratio (i.e., 0.12) is shown to exhibit bioactive characteristics similar to those of the benchmark silicate bioactive glass of 45S5 composition. The release kinetics of the SiOC glasses modified with Ca and/or B during the SBF test was studied by inductively coupled plasma-optical emission spectroscopy. It has been observed that the Si release kinetics can be correlated with the Ca content in the SiOC glasses: SiOC based glasses modified with Ca exhibited low Si release activation energies (i.e., 0.07 eV), being comparable to that of 45S5 bioactive glass (i.e., 0.04 eV); whereas silicon oxycarbides without Ca modification showed higher activation energies for Si release (i.e., 0.27 eV). |
| Freie Schlagworte: | Bioactivity; silicon oxycarbide; network connectivity; bioactive glass; in-vitro; carbonated hydroxyapatite; bone; cytotoxicity; precursors; energetics; particles; composite; ceramics; powders |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe |
| Hinterlegungsdatum: | 30 Okt 2019 07:46 |
| Letzte Änderung: | 30 Okt 2019 07:46 |
| PPN: | |
| Projekte: | German Research Foundation (DFG), Grant Number: 317658328, COST Action "Smart Inorganic Polymers", Grant Number: CM1302 |
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