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Fabrication and characterization of three dimensional scaffolds of bioceramic-polymer composite via microstereolithography technique
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Talib, M., Covington, James A., Smith, A. and Grover, L. (2011) Fabrication and characterization of three dimensional scaffolds of bioceramic-polymer composite via microstereolithography technique. In: Gordon Research Conference on Biomaterials & Tissue Engineering, Holderness School, Holderness, NH, U.S.A., July 31 - Aug 5, 2011
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Official URL: http://www.grc.org/programs.aspx?year=2011&program...
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 a photocurable polymer reinforced with calcium pyrophosphate (CPP) and fabricate a scaffold for application in tissue engineering. The photopolymer or UV curable ceramic suspension was prepared with an acrylate polyester, multifunctional acrylate monomer with the addition of 50-70wt% of CPP, and photoinitiators. From layer controlled determination, 3 wt% and 0 photoinniators was required to control an effective area of localized photopolymerization, this also depends on the weight fraction of CPP in the suspension. The 3D structure of the photopolymer resin was
successfully fabricated using (μSL) apparatus (Envisiontec
Perfactory3® Desktop System). The resin were fabricated
in ‘dumb-bell’ form for tensile testing and a rectangular
prism shape specifically designed for 4 point bending, and
hardness measurement. They were then sintered at high
temperature for polymer removal, to obtain a ceramic of
the desired porosity. 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
mechanical properties exhibited by the bioceramic. The
density increased to more than 35% and the dimensional
shrinkage after sintering were 33%. The success fabrication of novel bioceramic polymer composite with μSL technique offer the possibility of designing complex tissue scaffolds with optimum mechanical properties for specific tissue engineering applications.
| Item Type: | Conference Item (Paper) | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
| Official Date: | 2011 | ||||
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| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Conference Paper Type: | Paper | ||||
| Title of Event: | Gordon Research Conference on Biomaterials & Tissue Engineering | ||||
| Type of Event: | Conference | ||||
| Location of Event: | Holderness School, Holderness, NH, U.S.A. | ||||
| Date(s) of Event: | July 31 - Aug 5, 2011 |
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