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Selective laser sintering of polymer biocomposites based on polymethyl methacrylate

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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.

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Authors and Affiliations

  1. Department of Mechanical Engineering, School of Engineering, AUT University, Auckland, 1010, New Zealand

    Rajkumar Velu & Sarat Singamneni

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  1. Rajkumar Velu
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  2. Sarat Singamneni
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Correspondence to Sarat Singamneni.

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Velu, R., Singamneni, S. Selective laser sintering of polymer biocomposites based on polymethyl methacrylate. Journal of Materials Research 29, 1883–1892 (2014). https://doi.org/10.1557/jmr.2014.211

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