Micromechanical properties of a hydroxyapatite/poly-l-lactide biocomposite using nanoindentation and modulus mapping

P. S. Uskokovic; Chak Yin Tang; Chi Pong Tsui; N. Ignjatovic; D. P. Uskokovic

doi:10.1016/j.jeurceramsoc.2006.04.122

Micromechanical properties of a hydroxyapatite/poly-l-lactide biocomposite using nanoindentation and modulus mapping

P. S. Uskokovic, Chak Yin Tang, Chi Pong Tsui, N. Ignjatovic, D. P. Uskokovic

Research output: Journal article publication › Journal article › Academic research › peer-review

53 Citations (Scopus)

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.

Original language	English
Pages (from-to)	1559-1564
Number of pages	6
Journal	Journal of the European Ceramic Society
Volume	27
Issue number	2-3
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2006.04.122
Publication status	Published - 1 Jan 2007

Keywords

Biomedical applications
Composites
Mechanical properties
Nanoindentation

ASJC Scopus subject areas

Ceramics and Composites

More information

10.1016/j.jeurceramsoc.2006.04.122

Cite this

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title = "Micromechanical properties of a hydroxyapatite/poly-l-lactide biocomposite using nanoindentation and modulus mapping",

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.",

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AU - Tang, Chak Yin

AU - Tsui, Chi Pong

AU - Ignjatovic, N.

AU - Uskokovic, D. P.

PY - 2007/1/1

Y1 - 2007/1/1

N2 - 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.

AB - 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.

KW - Biomedical applications

KW - Composites

KW - Mechanical properties

KW - Nanoindentation

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DO - 10.1016/j.jeurceramsoc.2006.04.122

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JO - Journal of the European Ceramic Society

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Micromechanical properties of a hydroxyapatite/poly-l-lactide biocomposite using nanoindentation and modulus mapping

Abstract

Keywords

ASJC Scopus subject areas

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