Poly(methyl methacrylate)-silica-calcium phosphate coatings for the protection of Ti6Al4V alloy

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorUvida, Mayara Carla-
Autor(es): dc.creatorPulcinelli, Sandra Helena-
Autor(es): dc.creatorSantilli, Celso Valentim-
Autor(es): dc.creatorHammer, Peter-
Data de aceite: dc.date.accessioned2025-08-21T17:14:33Z-
Data de disponibilização: dc.date.available2025-08-21T17:14:33Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s10971-023-06111-z-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/249874-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/249874-
Descrição: dc.descriptionPoly(methyl methacrylate) (PMMA)-silica coatings modified with calcium phosphates (CaPs) in the form of hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP) have been developed to improve the corrosion resistance and bioactivity of Ti6Al4V titanium alloys, applied in medical and dental implants. PMMA-silica hybrids containing 1000 ppm HA or β-TCP were prepared by combining the sol-gel reactions of tetraethylorthosilicate (TEOS) with the radical polymerization of methyl methacrylate (MMA) and 3-methacryloxypropyl trimethoxysilane (MPTS), used as molecular coupling agent. Bi-layer coatings about 15 μm thick, deposited by immersion on Ti6Al4V, are homogeneous, defect-free, and exhibit strong adhesion to the substrate (>14 MPa). The addition of HA and β-TCP led to a slight increase in thermal stability, without affecting the structural integrity of the highly crosslinked PMMA-silica matrix. The greater hydrophilicity and surface roughness of coatings containing HA and β-TCP are associated with the size and chemical composition of CaPs, necessary for effective osteointegration. The modified coatings showed high anti-corrosion efficiency with low-frequency impedance modulus values of up to 73 GΩ cm2, remaining stable after 150 days of exposure to simulated body fluid (SBF) solution. Graphical Abstract: [Figure not available: see fulltext.]-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry-
Formato: dc.format627-638-
Idioma: dc.languageen-
Relação: dc.relationJournal of Sol-Gel Science and Technology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCalcium phosphates-
Palavras-chave: dc.subjectCorrosion protection-
Palavras-chave: dc.subjectOrganic-inorganic hybrid-
Palavras-chave: dc.subjectPMMA-silica-
Palavras-chave: dc.subjectTi6Al4V-
Título: dc.titlePoly(methyl methacrylate)-silica-calcium phosphate coatings for the protection of Ti6Al4V alloy-
Tipo de arquivo: dc.typelivro digital-
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