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Selective laser sintering of polymer biocomposites based on polymethyl methacrylate

Published online by Cambridge University Press:  27 August 2014

Rajkumar Velu  and
Sarat Singamneni
Rajkumar Velu
Affiliation:
Department of Mechanical Engineering, School of Engineering, AUT University, Auckland 1010, New Zealand
Sarat Singamneni*
Affiliation:
Department of Mechanical Engineering, School of Engineering, AUT University, Auckland 1010, New Zealand
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Materials and processes used for medical applications should have specific attributes. For bone repair and reconstruction, controlled open porosity and osteoconductivity are essential apart from mechanical strength and biocompatibility. Several forms of calcium phosphates are often used for these applications, considering properties similar to bone minerals, but often in combinations with other biopolymers. Polymethyl methacrylate (PMMA) and β-tricalcium phosphate (β-TCP) are identified as a suitable combination for the current research, considering specific properties both individually and in combinations, when processed by different means for specific medical applications. Specific responses of the biocomposite material formed by mechanically mixing the two materials in the powder form to selective laser sintering (SLS) under varying conditions are investigated. The results indicate the suitability of the material system for SLS, while controlled porosity and mechanical property combinations are possible by optimizing material composition and process parameters.

Keywords

biocomposite materialsbone substitutesPMMAtricalcium phosphateselective laser sintering
Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 17: Focus Issue: The Materials Science of Additive Manufacturing , 14 September 2014 , pp. 1883 - 1892
Copyright
Copyright © Materials Research Society 2014 

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References

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