Porous glass reinforced hydroxyapatite materials produced with different organic additives

• Type: Article in International Scientific Journal
• Date: 2002

Authors

da Silva, MHP (Author) Other; Lemos, AF (Author) Other; Gibson, IR (Author) Other; Ferreira, JMF (Author) Other; Santos, JD (Author) FEUP

Journal

Title: Journal of Non-Crystalline Solids

Vol. 304

Pages: 286-292

ISSN: 0022-3093

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 43 Citations

ISI Web of Science

Scopus - 50 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Materials engineering

CORDIS: Technological sciences > Engineering > Biomedical enginnering ; Technological sciences > Engineering > Biomaterial engineering

Other information

Authenticus ID: P-000-P7D

DOI: 10.1016/s0022-3093(02)01036-0

Abstract (EN): In the present study three different organic additives were used to produce porous structures of a CaO-P2O5 glass reinforced hydroxyapatite potato starch, almond crust and wax spheres. The produced samples were analysed by scanning electron microscopy, X-ray diffraction with Rietveld refinement, differential thermal analysis and mercury porosimetry. The techniques used in this study enabled the production of glass reinforced hydroxyapatite samples with various pore diameters. Two different techniques were used to produce porous glass reinforced hydroxyapatite samples: a dry method using wax spheres as pore formers and a wet method in alcoholic suspension, where almond crust and potato starch were used as pore formers. The final microstructure consists of hydroxyapatite, alpha-tricalcium phosphate and beta-tricalcium phosphate. X-ray diffraction and scanning electron microscopy analysis revealed different percentages of phases when comparing dense and porous glass reinforced hydroxyapatite specimens, These hard materials are intended to be used as bone defect fillers.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7