Journal
JOURNAL OF MATERIALS SCIENCE
Volume 37, Issue 20, Pages 4425-4430Publisher
SPRINGER
DOI: 10.1023/A:1020681309572
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Hybrid hydroxyapatite/polymer composites were prepared by the infiltration of nylon into porous hydroxyapatite. Porous hydroxyapatite (HAp) bodies were prepared from a whisker-like powder with high aspect ratio by pressureless-sintering at various temperatures. Pore characteristics, such as the fraction of open porosity and the pore size distribution, were designed and evaluated by mercury porosimeter. Through the in situ polymerization of epsilon-caprolactam, infiltrated into the porous HAp body, a polymeric secondary phase network interpenetrated with the HAp phase was obtained. The obtained hybrid HAp/nylon composites were evaluated with respect to their fracture behavior, i.e., fracture energy, and in vitro bioactivity in simulated body fluid (SBF) in the present paper. These HAp/nylon hybrid composite have a K-IC of 1.65 MPam(1/2) and also a good bioactivity according to the results of SBF immersion tests. (C) 2002 Kluwer Academic Publishers.
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