J. Massera, A. Mishra, S. Guastella, S. Ferraris, E. Verné
{"title":"Surface functionalization of phosphate-based bioactive glasses with 3-aminopropyltriethoxysilane (APTS)","authors":"J. Massera, A. Mishra, S. Guastella, S. Ferraris, E. Verné","doi":"10.1515/bglass-2016-0007","DOIUrl":null,"url":null,"abstract":"Abstract The effect of SrO substitution for CaO, in the 50P2O5-10Na2O-(40-x)CaO-xSrO glass system, on the ability to graft 3-aminopropyltriethoxysilane (APTS) at the glass surface has been investigated and is partially compared to changes occurring further from the surface. The step used for the APTS grafting led to Na leaching and successively to Ca and/or Sr leaching. This gave rise to a P2O5- rich glass surface, especially on sample containing both Ca and Sr ions. The hydration of the phosphate chainswas found to be the most pronounced for the glasses containing large quantity of SrO as evidenced by contact angle and X-ray photoelectron spectroscopy (XPS). The increase in phosphate chain hydration was attributed to the expansion of the glass network when Sr ions are introduced. Finally, based on the N1s XPS peak, N species were found at the surface of the glasses in two configurations: NH2 and – NH2-OH as proof of APTS grafting. APTS grafting on phosphate glass is of importance for the grafting of proteins.","PeriodicalId":37354,"journal":{"name":"Biomedical Glasses","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2016-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/bglass-2016-0007","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biomedical Glasses","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/bglass-2016-0007","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Materials Science","Score":null,"Total":0}
引用次数: 9
Abstract
Abstract The effect of SrO substitution for CaO, in the 50P2O5-10Na2O-(40-x)CaO-xSrO glass system, on the ability to graft 3-aminopropyltriethoxysilane (APTS) at the glass surface has been investigated and is partially compared to changes occurring further from the surface. The step used for the APTS grafting led to Na leaching and successively to Ca and/or Sr leaching. This gave rise to a P2O5- rich glass surface, especially on sample containing both Ca and Sr ions. The hydration of the phosphate chainswas found to be the most pronounced for the glasses containing large quantity of SrO as evidenced by contact angle and X-ray photoelectron spectroscopy (XPS). The increase in phosphate chain hydration was attributed to the expansion of the glass network when Sr ions are introduced. Finally, based on the N1s XPS peak, N species were found at the surface of the glasses in two configurations: NH2 and – NH2-OH as proof of APTS grafting. APTS grafting on phosphate glass is of importance for the grafting of proteins.
期刊介绍：
Biomedical Glasses is an international Open Access-only journal covering the field of glasses for biomedical applications. The scope of the journal covers the science and technology of glasses and glass-based materials intended for applications in medicine and dentistry. It includes: Chemistry, physics, structure, design and characterization of biomedical glasses Surface science and interactions of biomedical glasses with aqueous and biological media Modeling structure and reactivity of biomedical glasses and their interfaces Biocompatibility of biomedical glasses Processing of biomedical glasses to achieve specific forms and functionality Biomedical glass coatings and composites In vitro and in vivo evaluation of biomedical glasses Glasses and glass-ceramics in engineered regeneration of tissues and organs Glass-based devices for medical and dental applications Application of glasses and glass-ceramics in healthcare.
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