Novel preparation of graded porous structures for medical engineering.

Journal of the Royal Society, Interface
Anushini I MuthutantriM J Edirisinghe

Abstract

The gradation of porosity in a biomaterial can be very useful for a variety of medical engineering applications such as filtration, bone replacement and implant development. However, the preparation of such structures is not a technologically trivial task and replication methods do not offer an easy solution. In this work, we elucidate the preparation of structures having a graded porosity by electrohydrodynamic spraying, using zirconia (ZrO2), which is widely used in biomedical and other applications. The processes are generic and can be achieved using other bioactive ceramics with similar particle characteristics. The pores on the sprayed surface, the innermost surface and lengthwise cross sections have been analysed in addition to the change in depth of penetration as a function of spraying time. Control of porosity, pore size and depth of penetration has been obtained by varying parameters such as the spraying time, sintering temperature and the sacrificial template. It has been possible to obtain structures with interconnected pore networks of pore size greater than 100microm as well as scattered pores smaller than 10microm in size.

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Jan 25, 2008·Journal of Materials Science. Materials in Medicine·Anushini MuthutantriMohan Edirisinghe
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Citations

Aug 15, 2014·Journal of the Royal Society, Interface·Di HuangYubao Li
Dec 25, 2008·Journal of Biomechanics·Ignacio OchoaAldo R Boccaccini
Apr 9, 2014·Advanced Healthcare Materials·Aswan Al-AbboodiPeggy Pui Yik Chan
Feb 13, 2015·The Journal of Craniofacial Surgery·Jingwen YangYunzhi Yang
Oct 1, 2011·Chemical Communications : Chem Comm·Adham AhmedHaifei Zhang

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