Reinforcement of hydroxyapatite by adding P2O5-CaO glasses with Na2O, K2O and MgO

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

Autores

Santos, JD (Autor) FEUP; Silva, PL (Autor) Outra; Knowles, JC (Autor) Outra; Talal, S (Autor) Outra; Monteiro, FJ (Autor) FEUP

Revista

Título: Journal of Materials Science: Materials in Medicine

Vol. 7 Nº 3

Páginas: 187-189

ISSN: 0957-4530

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 59 Citações

Scopus - 64 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Biotecnologia ambiental

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia de biomateriais

Outras Informações

ID Authenticus: P-001-EPH

DOI: 10.1007/bf00121259

Abstract (EN): Commercial hydroxyapatite was reinforced by adding small amounts (2 and 4 wt%) of P2O5-based glasses during its sintering process. The composites prepared had a chemical composition closely related to the mineral part of bone tissues in terms of trace elements usually detected, such as Na, K and Mg. X-ray diffraction analysis (XRD) showed that the glass reinforced-HA composites were composed of a HA matrix and variable amounts of tricalcium phosphate phase, depending on sintering temperature and glass composition. These composites were shown to have much higher biaxial bending strength than sintered HA, 107 MPa for Ha/2% of 35P(2)O(5)-35CaO-10Na(2)O-10K(2)O-10 MgO glass composite and 28 MPa for sintered HA. The presence of beta-tricalcium phosphate in the microstructure of the composites is an important factor in the reinforcement process.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 3