Selected physico-chemical properties of composite scaffolds of sintered submicrocrystalline corundum and bioglass

Abstract Presented paper contains description and interpretation of the results selected physicochemical structural properties two types composite sinters. They were constituted a mixture sintered microcrystalline corundum bioglass CaO-P 2 O 5 -SiO -Na system intended for scaffolds to cell culture human chondrocytes. The composites contained both above-mentioned components in volumetric proportion 50:50 (W5) 30:70 (W7). obtained using powder metallurgy by free sintering air atmosphere. Phase analysis verification theoretical identification X-ray diffraction performed. same phases found cases (Al 3 SiO CaAl Si 8 , Ca (PO 4 ) Al 7 NaAlSiO ). Microscopic tests surfaces performed some differences found. W5 sample was not completely covered with bioglass, whilst W7 few fine pores. Tests surface topography confirmed presence large small Composite immersed 30 days artificial blood plasma tested then electron microscopy It that no significant changes occurred on composite, probably partial corrosion glass happened. Spherical forms characteristic HA-hydroxyapatites observed W7. Human articular chondrocyte cells seeded sinters proliferation assay Results indicate support cellular attachment