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Characterization of fabricated three dimensional scaffolds of bioceramic-polymer composite via microstereolithography technique

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Talib, Marina, Covington, James A. and Bolarinwa, Aminat (2014) Characterization of fabricated three dimensional scaffolds of bioceramic-polymer composite via microstereolithography technique. In: ADVANCING NUCLEAR RESEARCH AND ENERGY DEVELOPMENT : International Nuclear Science, Technology & Engineering Conference 2013 (iNuSTEC2013), Kuala Lumpur, Malaysia, 30 Sep – 2 Oct 2013. Published in: Proceedings of the International Nuclear Science, Technology & Engineering Conference 2013 (iNuSTEC2013), Volume 1584 pp. 129-135. ISBN 9780735412163. doi:10.1063/1.4866118 ISSN 0094-243X.

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Official URL: http://dx.doi.org/10.1063/1.4866118

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Abstract

Microstereolithography is a method used for rapid prototyping of polymeric and ceramic components. This technique converts a computer-aided design (CAD) to a three dimensional (3D) model, and enables layer per layer fabrication curing a liquid resin with UV-light or laser source. The aim of this project was to formulate photocurable polymer reinforced with synthesized calcium pyrophosphate (CPP), and to fabricate a 3D scaffolds with optimum mechanical properties for specific tissue engineering applications. The photocurable ceramic suspension was prepared with acrylate polyester, multifunctional acrylate monomer with the addition of 50–70wt% of CPP, photoinitiators and photoinhibitors. The 3D structure of disc (5 mm height × 4 mm diameter) was successfully fabricated using Envisiontec Perfactory3® . They were then sintered at high temperature for polymer removal, to obtain a ceramic of the desired porosity. The density increased to more than 35% and the dimensional shrinkage after sintering were 33%. The discs were then subjected compressive measurement, biodegradation and bioactivity test. Morphology and CPP content of the sintered polymer was investigated with SEM and XRD, respectively. The addition of CPP coupled with high temperature sintering, had a significant effect on the compressive strength exhibited by the bioceramic. The values are in the range of cancellous bone (2–4 MPa). In biodegradation and bioactivity test, the synthesized CPP induced the formation of apatite layer and its nucleation onto the composite surface.

Item Type: Conference Item (Paper)
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Journal or Publication Title: Proceedings of the International Nuclear Science, Technology & Engineering Conference 2013 (iNuSTEC2013)
Publisher: AIP Publishing
ISBN: 9780735412163
ISSN: 0094-243X
Official Date: 12 February 2014
Dates:
DateEvent
12 February 2014Published
Volume: Volume 1584
Page Range: pp. 129-135
DOI: 10.1063/1.4866118
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Conference Paper Type: Paper
Title of Event: ADVANCING NUCLEAR RESEARCH AND ENERGY DEVELOPMENT : International Nuclear Science, Technology & Engineering Conference 2013 (iNuSTEC2013)
Type of Event: Conference
Location of Event: Kuala Lumpur, Malaysia
Date(s) of Event: 30 Sep – 2 Oct 2013

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