Production of porous biomaterials based on glass-reinforced hydroxyapatite composites

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

Authors

M. H. P. da Silva (Author) Other; A. F. Lemos (Author) Other; J. M. F. Ferreira (Author) Other; Maria Ascensão Lopes (Author) FEUP; José D. Santos (Author) FEUP

Journal

Title: Advanced Materials Forum I

Vol. 230-2

Pages: 483-486

Publisher: Trans Tech Publications

Indexing

ISI Web of Knowledge - 8 Citations

ISI Web of Science

Scopus - 15 Citations

Scientific classification

FOS: Engineering and technology > Materials engineering

Other information

Authenticus ID: P-000-QRD

DOI: 10.4028/www.scientific.net/KEM.230-232.483

Abstract (EN): In this study, porous GR-HA composites were produced using a calcium-phosphate glass with the composition, in mol%, 75P(2)O(5)-15CaO-10CaF(2). The composites were obtained by wet mixing 4.0% (w/w) of the glasses with hydroxyapatite.(HA) powder (batch P120) (Plasma Biotal; Tideswell, U.K.), pressing and sintering. Two different organic additives were used as pore formers: potato starch and almond crust. This processing route was effective in producing a homogeneous microstructure of equiaxed grains. The bulk density of the samples decreased with the volume fraction increase in the content of pore formers. Scanning electron microscopy and mercury porosimetry analyses showed to be complementary techniques in characterising the pore size and distribution.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4