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Effect of saturation and post processing on 3D printed calcium phosphate scaffolds

Szűcs, Tamás D. and Brabazon, Dermot ORCID: 0000-0003-3214-6381 (2008) Effect of saturation and post processing on 3D printed calcium phosphate scaffolds. Key Engineering Materials, 396-39 . pp. 663-666. ISSN 1013-9826

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Abstract

Three dimensional printing was investigated for fabricating hydroxyapatite (HA) and - tricalcium phosphate ( -TCP) composite scaffolds using calcium phosphate based ceramics and calcium phosphate cement chemistry. Scaffolds were formed by printing an aqueous sodium phosphate solution on the powder bed consisting of a mixture of dicalcium phosphate anhydrous (DCPA) and calcium hydroxide powders. The sodium phosphate solution was functioning as a binder material and also as the initiator of the wet chemical reaction. Compressive mechanical properties of printed samples were examined as a function of saturation level that was inversely proportional to the powder to liquid ratio. To increase mechanical properties and obtain hydroxyapatite and -TCP composites, the printed samples were sintered. The effect of sintering parameters including dwell time and sintering temperature were also examined. X-ray diffraction (XRD) was used to examine material composition at different stages of the manufacturing process and to confirm the presence of HA and -TCP in the final stage. The effect of sintering procedure on the surface topology of the samples was examined using scanning electron microscopy (SEM).

Item Type:Article (Published)
Refereed:Yes
Uncontrolled Keywords:3D Printing; Bone Scaffold; Calcium Phosphate Cement (CPC)
Subjects:Engineering > Materials
Engineering > Mechanical engineering
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Mechanical and Manufacturing Engineering
Publisher:Scientific.net
Official URL:http://dx.doi.org/10.4028/www.scientific.net/KEM.396-398.663
Copyright Information:© 2008 Scientific.net
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:20355
Deposited On:19 Dec 2014 14:42 by Fran Callaghan . Last Modified 20 Sep 2018 10:29

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