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Processing of highly porous bioglass monoliths by hydrothermal hot pressing

hal.structure.identifierInstitut des Sciences Chimiques de Rennes [ISCR]
dc.contributor.authorDEGRAEVE, B.
hal.structure.identifierInstitut des Sciences Chimiques de Rennes [ISCR]
dc.contributor.authorLEFEUVRE, B.
hal.structure.identifierInstitut des Sciences Chimiques de Rennes [ISCR]
dc.contributor.authorROCTON, N.
hal.structure.identifierInstitut des Sciences Chimiques de Rennes [ISCR]
dc.contributor.authorHERBERT, N.
hal.structure.identifierInstitut des Sciences Chimiques de Rennes [ISCR]
dc.contributor.authorHAMROUNI, N.
hal.structure.identifierPlateforme Aquitaine de Caractérisation des Matériaux [PLACAMAT]
dc.contributor.authorHAUSS, Grégory
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLARGETEAU, Alain
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPRAKASAM, Mythili
hal.structure.identifierInstitut des Sciences Chimiques de Rennes [ISCR]
dc.contributor.authorOUDADESSE, Hassane
hal.structure.identifierInstitut des Sciences Chimiques de Rennes [ISCR]
dc.contributor.authorMERDRIGNAC-CONANEC, Odile
dc.date.issued2022-03
dc.identifier.issn0272-8842
dc.description.abstractEnPorous bioglass monoliths have been processed by hydrothermal hot pressing (HyHP) from sol-gel and melt-derived bioglass powders of composition (in mol %): SiO2–CaO–P2O5 (55.0-40.0-5.0) and SiO2–CaO–Na2O–P2O5 (47.2-26.4-23.8-2.6), respectively. An open porosity of >70% ever reached in 3D structures is reported for monoliths issued from sol-gel powders. Dissolution studies were performed in simulated body fluid (SBF) for 1–30 days. The monoliths were analysed using X-Ray Diffraction (XRD), Fourier Transform Infra-Red (FTIR) spectroscopy and Scanning Electron Microscopy (SEM) to observe the formation of an apatite-like layer and elemental concentration of SBF was evaluated using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). A higher kinetics in the development of apatite layer was observed for sol-gel derived monoliths. This result is explained by the high surface areas of the nanosized sol-gel powders and the possibility of HyHP to create large porosity (mesoporous monoliths) and retain large surface areas. HyHP is also effective in processing 3D-bioglass structures with porosity gradient by co-sintering powders of different size.
dc.language.isoen
dc.publisherElsevier
dc.subject.enHydrothermal hot pressing
dc.subject.enSol-gel derived bioglass
dc.subject.enHighly porous monolith
dc.subject.enMelt-derived bioglass
dc.subject.enSintering
dc.title.enProcessing of highly porous bioglass monoliths by hydrothermal hot pressing
dc.typeArticle de revue
dc.identifier.doi10.1016/j.ceramint.2022.03.078
dc.subject.halChimie
bordeaux.journalCeramics International
bordeaux.page18190-18198
bordeaux.volume48
bordeaux.issue13
bordeaux.peerReviewedoui
hal.identifierhal-03643101
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03643101v1
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