Preparation of porous alumina for biomedical applications through protein foaming-consolidation method

作者：Fadli A; Sopyan I^*

来源：Materials Research Innovations, 2009, 13(3): 327-329.

DOI：10.1179/143307509X440668

• Protein foaming-consolidation
• Porous ceramics
• Porosity
• Characterisation

The present work reports a novel method for preparation of porous alumina using egg yolk both as consolidator and foaming agent. Suspensions with an alumina to yolk ratio of 1 in weight were prepared by stirring for 3 h and the resulting slip was poured into cylindrical shaped moulds followed by foaming and consolidation by drying at temperatures of 110 and 180 degrees C. The dried green bodies were then burned to remove the pore creating agent at 600 degrees C for 1 h, followed by sintering at 1550 degrees C for 2 h. The density of the porous bodies was 2.27 g cm(-3) when foamed at 110 degrees C and it decreased to 1.80 g cm(-3) at 180 degrees C foaming temperature. The compressive strength was found to drop from 5.72 MPa at 43.6% porosity to 4.57 MPa at 50.4% porosity. Macropores of the porous bodies were found to fall in the range of 100-500 mu m, showing promising applicability for scaffold devices.

• 出版日期2009-9