Record number :
Title of article :
Micromechanical properties of a hydroxyapatite/poly-l-lactide biocomposite using nanoindentation and modulus mapping
Author/Authors :
Uskokovic، نويسنده , , P.S. and Tang، نويسنده , , C.Y. and Tsui، نويسنده , , C.P. and Ignjatovic، نويسنده , , N. and Uskokovic، نويسنده , , D.P.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Pages :
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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.
Keywords :
Composites , Biomedical applications , Nanoindentation , mechanical properties
Journal title :
Journal of the European Ceramic Society
Serial Year :
Link To Document :