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Production of porous biomaterials based on glass-reinforced hydroxyapatite composites

Title
Production of porous biomaterials based on glass-reinforced hydroxyapatite composites
Type
Article in International Scientific Journal
Year
2002
Authors
da Silva, MHP
(Author)
Other
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Lemos, AF
(Author)
Other
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Ferreira, JMF
(Author)
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Lopes, MA
(Author)
FEUP
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Santos, JD
(Author)
FEUP
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Scientific classification
FOS: Engineering and technology > Materials engineering
Other information
Authenticus ID: P-000-QRD
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
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