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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/4634

Title: Characterization and dynamic mechanical analysis of selective laser sintered hydroxyapatite filled polymeric composites
Authors: Zhang, Y.
Hao, L.
Savalani, M.M.
Harris, Russell A.
Tanner, K.E.
Keywords: Composite
Dynamic mechanical analysis
Hydroxyapatite
Mechanical properties
Polyamide
Polyethylene
Selective laser sintering
Issue Date: 2008
Publisher: © John Wiley & Sons
Citation: ZHANG, Y....et al., 2008. Characterization and dynamic mechanical analysis of selective laser sintered hydroxyapatite filled polymeric composites. Journal of Biomedical Materials Research Part A, 86A(3), pp. 607-616.
Abstract: Selective laser sintering (SLS) is a manufacturing technique which enables the final product to be made directly and rapidly, without tooling or additional machining. For biomedical applications, SLS permits the fabrication of implants and scaffolds with complex geometry accurately and economically. In this study, hydroxyapatite-reinforced polyethylene and polyamide composites were fabricated using SLS. The SLS samples were characterized in terms of their internal structure, morphology, and porosity. The mechanical properties were examined by dynamic mechanical analysis. The effects of SLS processing conditions, including particle size and laser power, were investigated, and the results were compared with conventional compression-molded and machined specimens. The internal structure of sintered samples was porous, with open interconnected pores, and the pore size was up to 200 m. Particle size and laser energy play a key role in the final density and mechanical properties of the sintered components. In the parameter range used, the use of smaller particles produced higher density and stiffness, and the laser-induced energy could also be varied to optimize the manufacturing process. This study demonstrated that high-HA-content reinforced polymer composite can be successfully manufactured by SLS with controlled porosity features.
Description: This article is Restricted Access. It was published in the journal, Journal of Biomedical Materials Research Part A [© John Wiley & Sons] and is available at: http://dx.doi.org/10.1002/jbm.a.31622
Version: Restricted access
DOI: 10.1002/jbm.a.31622
URI: https://dspace.lboro.ac.uk/2134/4634
ISSN: 1549-3296
Appears in Collections:Closed Access (Mechanical and Manufacturing Engineering)

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