Sol-gel derived silicate-phosphate glass SiO 2-P 2 O 5-CaO-TiO 2: The effect of titanium isopropoxide on porosity and thermomechanical stability

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dc.contributor.authorKovářík, Tomáš
dc.contributor.authorBělský, Petr
dc.contributor.authorKřenek, Tomáš
dc.contributor.authorDeshmukh, Kalim Abdul Rashid
dc.contributor.authorMedlín, Rostislav
dc.contributor.authorBeneš, Jan
dc.contributor.authorSvoboda, Miloš
dc.contributor.authorKadlec, Jaroslav
dc.contributor.authorPola, Michal
dc.contributor.authorJandová, Věra
dc.contributor.authorMikysek, Petr
dc.contributor.authorIlavský, Jan
dc.contributor.authorStich, Theresia
dc.contributor.authorDocheva, Denitsa
dc.contributor.authorStrejcová, Kateřina
dc.contributor.authorTišler, Zdeněk
dc.contributor.authorForejtová, Jana
dc.contributor.authorForejtová, Jan
dc.date.accessioned2024-12-18T19:38:10Z
dc.date.available2024-12-18T19:38:10Z
dc.date.issued2024
dc.description.abstract-translatedDespite of several decades lasting extensive research of bioactive and bioresorbable glasses the systematic parametrization and determination of the key factors affecting porosity and thermomechanical characteristics still remains challenging. Here, we present silica-phosphate glasses, with the composition70SiO2–20P2O5–(10-x)CaO–xTiO2 (mol%; x = 0, 2.5, 5, and 7.5), prepared by sol-gel method and reinforced by titanium dioxide via titanium isopropoxide (TTIP) incorporation which demonstrated tunable variation of porosity from micro-to macro-region and superb mechanical integrity during the calcination process. The presence of 7.5 mol% TiO2 promotes dimensional stability up to 1000 ◦C as investigated by thermomechanical analysis. The XRD showed the dominant presence of silicon phosphate [Si(P2O7)], titanium phosphate [Ti(P2O7)] and calcium phosphates [β-Ca(P2O6) and γ- Ca2(P2O7)]. The effect of TiO2 doping on the multiscale morphology and porosity was investigated by means of SEM, MIP, μCT, N2 adsorption and USAXS/SAXS. Increasing TiO2 content leads to the formation of open porosity up to 70 vol% and drives the formation of a refined interconnected macroporosity of 2–30 μm. In contrast, mesoporosity with a dominance of 3–6 nm pores decreases in all samples with increasing TiO2 content. USAXS/SAXS revealed an increase in primary particle size with increasing TiO2 content which is in good agreement with the nitrogen physisorption analysis showing that microporosity decreases with increasing TiO2 content.en
dc.description.sponsorshipEH22_008/0004634 Strojní inženýrství biologických a bioinspirovaných systémůcs
dc.format12 s.cs
dc.identifier.doihttps://doi.org/10.1016/j.micromeso.2024.113138
dc.identifier.issn1873-3093
dc.identifier.urihttp://hdl.handle.net/11025/57983
dc.language.isoenen
dc.publisherElsevieren
dc.rights© CC BY 4.0en
dc.rights.accessopenAccessen
dc.subjectbioaktivita in vitrocs
dc.subjectporézní oxid křemičitýcs
dc.subjectlešenícs
dc.subjectbiokompatibilitacs
dc.subjectmonolitycs
dc.subjectvývojcs
dc.subject.translatedin-vitro bioactivityen
dc.subject.translatedporous silicaen
dc.subject.translatedscaffoldsen
dc.subject.translatedbiocompatibilityen
dc.subject.translatedmonolithsen
dc.subject.translatedevolutionen
dc.titleSol-gel derived silicate-phosphate glass SiO 2-P 2 O 5-CaO-TiO 2: The effect of titanium isopropoxide on porosity and thermomechanical stabilityen
dc.typearticleen
dc.typečlánekcs
dc.type.statusPeer revieweden
dc.type.versionpublihedVersionen
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local.files.size9824717*
local.has.filesyes*

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