In vitro calcium phosphate formation on SiO2-Na2O-CaO-P2O5 glass reinforced hydroxyapatite composite: A study by XPS analysis

• Tipo: Artigo em Revista Científica Internacional
• Data: 1996

Autores

Santos, JD (Autor) FEUP; Jha, LJ (Autor) Outra; Monteiro, FJ (Autor) FEUP

Revista

Título: Journal of Materials Science: Materials in Medicine

Vol. 7 Nº 3

Páginas: 181-185

ISSN: 0957-4530

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 57 Citações

Scopus - 60 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Biotecnologia ambiental

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia de biomateriais

Outras Informações

ID Authenticus: P-001-EPG

DOI: 10.1007/bf00121258

Abstract (EN): In-vitro apatite layer formation on the surface of a newly developed glass reinforced hydroxyapatite composite was characterized using X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) equipped with energy dispersive X-ray analysis (EDXA). After 1 week soaking in an acellular simulated body fluid the composite surface was entirely covered by a Ca, P-layer, suggesting a bioactive behaviour. XPS binding energy results revealed that this surface layer was a carbonated and non-stoichiometric apatite with Ca/P ratio of 1.3. This apatite layer was composed of very fine needle-like crystallites. Comparative studies on a commercially available hydroxyapatite showed that a similar apatite layer was also formed on its surface.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5