Electrospraying of a nano-hydroxyapatite suspension

Hydroxyapatite (HA) has been used in a number of different forms and several powder processing routes have been investigated in conjunction with HA. The application of jet-based suspension processing methods, such as ink-jet printing (IJP) and electrostatic atomization printing (EAP) allows solid fr...

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Bibliographic Details
Published in:Journal of materials science 2004-02, Vol.39 (3), p.1029-1032
Main Authors: HUANG, J, JAYASINGHE, S. N, BEST, S. M, EDIRISINGHE, M. J, BROOKS, R. A, BONFIELD, W
Format: Article
Language:English
Subjects:
Applied sciences
Biological and medical sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Hydroxyapatite
Materials science
Medical sciences
Miscellaneous
Nanopowders
Nanoscale materials and structures: fabrication and characterization
Physics
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Technical ceramics
Technology. Biomaterials. Equipments. Material. Instrumentation
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Summary:Hydroxyapatite (HA) has been used in a number of different forms and several powder processing routes have been investigated in conjunction with HA. The application of jet-based suspension processing methods, such as ink-jet printing (IJP) and electrostatic atomization printing (EAP) allows solid freeforming of fine structures of advanced materials. In particular, EAP in the cone-jet mode enables the formation of < 50 *mm size relics of advanced materials, an order of magnitude finer than those produced using IJP, using needles having an internal diameter of #~200 *mm, x 4 coarser than those used in IJP. However, electrostatic atomization or electrospraying has been developed largely by the aerosol industry to process liquids and, only very recently, to process suspensions containing micrometer size particles. In this letter we describe the use of electrospraying to process a suspension contain nano-hydroxyapatite (nHA) particles to deposit droplets, which after spreading on a glass substrate, allows the preparation of relics < 1 *mm in size.
ISSN:0022-2461
1573-4803
DOI:10.1023/B:JMSC.0000012937.85880.7b