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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Hydroxyapatite-polyphosphazane composites prepared at low temperatures
Journal of the American Ceramic Society, Volume 90, No. 9, Year 2007
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Description
Owing to their similarities to bone apatite, calcium phosphate bioceramics, such as hydroxyapatite (HAp), are used as biomaterials for hard tissue replacements. Composites of bioceramics and biomedical polymers can mimic bone structure and properties. The characteristics of composites comprising HAp and a biomedical polymer and prepared at low temperatures are described. The kinetics of HAp formation in the presence of a polyphosphazene polymer that carries carboxylic acid moieties (acid-PCPP) were established at temperatures from 25° to 50°C. Evolution in the compositions of the solids present, solution chemistry, and microstructure development were established as functions of reaction time and temperature. The polymer participated in HAp formation affecting its rates of nucleation and growth through the formation of calcium cross links. The presence of polymer also enhanced ductility. © 2007 The American Ceramic Society.
Authors & Co-Authors
Greish, Yaser E.
United States, University Park
Pennsylvania State University
Brown, Paul Wencil
United States, University Park
Pennsylvania State University
United States, Westerville
The American Ceramic Society
Bender, Jared D.
United States, University Park
Pennsylvania State University
Allcock, Harry R.
United States, University Park
Pennsylvania State University
Laurencin, Cato T.
United States, Charlottesville
University of Virginia
Statistics
Citations: 12
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1111/j.1551-2916.2007.01780.x
ISSN:
15512916