Room temperature synthesis of chitosan/apatite powders and coatings

Bioactive chitosan/apatite powders and adherent coatings have been synthesized by a co-precipitation method and an alkaline transformation at room temperature. Powders with organic/inorganic ratios ranging from 42 to almost 90% can be prepared in substantial amounts. This method allows to coat Ti6Al...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 2006, Vol.26 (16), p.3631-3638
Main Authors: PENA, J, IZQUIERDO-BARBA, I, GARCIA, M. A, VALLET-REGI, M
Format: Article
Language:English
Subjects:
Apatite
Applied sciences
Biological and medical sciences
Biomedical applications
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Medical sciences
Polymer industry, paints, wood
Sol–gel processes
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Technology of polymers
Technology. Biomaterials. Equipments
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Summary:Bioactive chitosan/apatite powders and adherent coatings have been synthesized by a co-precipitation method and an alkaline transformation at room temperature. Powders with organic/inorganic ratios ranging from 42 to almost 90% can be prepared in substantial amounts. This method allows to coat Ti6Al4V substrates yielding films with thicknesses of approximately 1 μm that show an adhesion strength superior to 15 MPa. The coating procedure can be repeated to increase the thickness of the layer. The formation of apatite onto these materials after immersion in a simulated body fluid (SBF) indicates a potential bioactivity in vivo. The materials have been characterized by viscosimetry, XRD, FTIR, SEM, EDS and TG/ATD. The adhesion strength was determined by a pull-out test.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2005.12.028