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

Ahmad, Fadli and Iis, Sopyan (2009) Preparation of porous alumina for biomedical applications through protein foaming-consolidation method. Materials Research Innovations, 13 (3). pp. 327-329. ISSN 1433-075X

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Abstract

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°C. The dried green bodies were then burned to remove the pore creating agent at 600°C for 1 h, followed by sintering at 1550°C for 2 h. The density of the porous bodies was 2·27 g cm–3 when foamed at 110°C and it decreased to 1·80 g cm–3 at 180°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 μm, showing promising applicability for scaffold devices.

Item Type:	Article (Journal)
Additional Information:	4809/11511
Uncontrolled Keywords:	Protein foaming–consolidation, Porous ceramics, Porosity, Characterisation
Subjects:	T Technology > TS Manufactures
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	PROF. DR. IIS SOPYAN
Date Deposited:	12 Mar 2012 16:01
Last Modified:	12 Mar 2012 16:01
URI:	http://irep.iium.edu.my/id/eprint/11511

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