ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
An environmentally friendly direct foaming method was investigated to produce porousalumina ceramics. Egg white protein was used as a binder and foaming agent. The microstructuresshow that pores are interconnected with pore size of a few hundreds μm and pore window size of ca.50 μm. The compressive strength of alumina foam is up to 100 MPa depending on porosity.Bioactivation of alumina was carried out using an alkaline solution treatment. Hydroxylation ofalumina was achieved using 5M NaOH at 80°C for 4 days. In vitro assessments of the alumina in ahuman osteoblast cell-like cell (MG63) culture showed that the bioactivated alumina foamsexhibited better cellularity and alkaline phosphatase (ALP) activity compared to untreated aluminafoams. The results indicate that it is possible to improve the osseointgration of alumina ceramics bystructural and surface modifications and to extend the applications of biocompatible aluminaceramics in biomedical implants and tissue engineering scaffolds
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.330-332.975.pdf
