Ceramics-Silikáty 54, (4) 386 - 397 (2010) |
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PARTICULATE COMPOSITE ON THE BASIS OF HA AND TCP MICROPARTICLES AND NANOPARTICLES AS A POSSIBLE BIOMATERIAL FOR SPINE THERAPY
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Rýglová Šárka 1, Sucharda Zbyněk 1, Černý Martin 1,
Suchý Tomáš 2,1,
Šupová Monika 1,
Žaloudková Margit 1
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1 Institute of Rock Structure and Mechanics v.v.i., ASCR, Department of Composite and Carbon Materials,
V Holešovičkách 41, 182 09 Prague, Czech Republic
2 Laboratory of Biomechanics, Czech Technical University, Faculty of Mechanical Engineering,
Department of Mechanics, Biomechanics and Mechatronics, Technická 4, 166 07 Prague, Czech Republic
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Keywords: Particulate composite, Preparation, Hydroxyapatite, Tricalcium phosphate, Polydimethylsiloxane, Compressive strength
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The aim of this experimental work was to propose a technology for preparing a particle-reinforced composite based on
thermosetting polydimethylsiloxane resin matrix (PDMS) reinforced with hydroxyapatite (HA) or tricalciumphosphate
(TCP) microparticles/nanoparticles for application as an intervertebral filling biomaterial situated inside a load-bearing
PEEK cage. In addition, we determined the effect of microparticle and nanoparticle additives (HA, TCP) on the mechanical
characteristics of the particulate composite, namely modulus of elasticity in compression (Ec) and compressive strength
(σ). In this work, the proposed technology for preparing these particle composites with a thermosetting matrix functioned
quite satisfactorily. We can conclude that with rising volume of the particle composite filling up to 25 vol.%, the Ec and σcM
also rose to twice the values for the pure PDMS matrix. The effect of nanoparticles on the mechanical properties was more
pronounced. |
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