Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31906
Title: Micromechanical properties of a hydroxyapatite/poly-l-lactide biocomposite using nanoindentation and modulus mapping
Authors: Uskokovic, PS
Tang, CY 
Tsui, CP 
Ignjatovic, N
Uskokovic, DP
Keywords: Biomedical applications
Composites
Mechanical properties
Nanoindentation
Issue Date: 2007
Publisher: Elsevier Sci Ltd
Source: Journal of the European ceramic society, 2007, v. 27, no. 2-3, p. 1559-1564 How to cite?
Journal: Journal of the European Ceramic Society 
Abstract: Biocomposites with ceramic fillers and polymer matrix are becoming attractive materials for bone tissue replacements. Nanoindentation has been used to locally characterize the surface mechanical properties of the hydroxyapatite/poly-l-lactide (HAp/PLLA) biocomposite. Additionally, differences in the mechanical properties of HAp phase were successfully characterized as a function of surface morphology by using a high-resolution modulus mapping technique. HAp granules consist of agglomerates of grainy clusters. Mechanical properties of ceramic grains and PLLA are in fair agreement with literature data. High-resolution methods were able to measure the properties of boundary phases between grains and the pore regions between particles in the agglomerate. After short-time immersion in distilled water, material surface showed a large decrease in storage modulus.
URI: http://hdl.handle.net/10397/31906
DOI: 10.1016/j.jeurceramsoc.2006.04.122
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