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Imaging Physicochemical Reactions Occurring at the Pore Surface in Binary Bioactive Glass Foams by Micro Ion Beam Analysis

hal.structure.identifierLaboratoire de Physique Corpusculaire - Clermont-Ferrand [LPC]
dc.contributor.authorJALLOT, Edouard
hal.structure.identifierLaboratoire de Physique Corpusculaire - Clermont-Ferrand [LPC]
dc.contributor.authorLAO, Jonathan
hal.structure.identifierLaboratoire de Physique Corpusculaire - Clermont-Ferrand [LPC]
dc.contributor.authorJOHN, L.
hal.structure.identifierLaboratoire de Physique Corpusculaire - Clermont-Ferrand [LPC]
dc.contributor.authorSOULI, J.
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorMORETTO, P.
hal.structure.identifierLaboratoire des Matériaux Inorganiques [LMI]
dc.contributor.authorNEDELEC, Jean-Marie
dc.date.issued2010-06
dc.description.abstractEnIn this work, the physicochemical reactions occurring at the surface of bioactive sol−gel derived 3D glass scaffolds via a complete PIXE characterization were studied. 3D glass foams in the SiO2−CaO system were prepared by sol−gel route. Samples of glass scaffolds were soaked in biological fluids for periods up to 2 days. The surface changes were characterized using particle induced X-ray emission (PIXE) associated to Rutherford backscattering spectroscopy (RBS), which are efficient methods to perform quantitative chemical maps. Elemental maps of major and trace elements at the glass/biological fluids interface were obtained at the micrometer scale for every interaction time. Results revealed interconnected macropores and physicochemical reactions occurring at the surface of pores. The micro-PIXE-RBS characterization of the pores/biological fluids interface shows the glass dissolution and the rapid formation of a Ca rich layer with the presence of phosphorus that came from biological fluids. After 2 days, a calcium phosphate-rich layer containing magnesium is formed at the surface of the glass scaffolds. We demonstrate that quantities of phosphorus provided only by the biological medium have a significant impact on the development and the formation of the phosphocalcic layer.
dc.language.isoen
dc.title.enImaging Physicochemical Reactions Occurring at the Pore Surface in Binary Bioactive Glass Foams by Micro Ion Beam Analysis
dc.typeArticle de revue
dc.identifier.doi10.1021/am1002316
dc.subject.halPhysique [physics]/Physique [physics]/Biophysique [physics.bio-ph]
bordeaux.journalApplied Materials & Interfaces
bordeaux.page1737-1742
bordeaux.volume2
bordeaux.peerReviewedoui
hal.identifierin2p3-00497564
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//in2p3-00497564v1
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