Hydroxyapatite precipitation: A case of nucleation-aggregation-agglomeration-growth mechanism

The interpretation of the precipitation data of hydroxyapatite in MSMPR systems presents several problems due to the lack of consistency of the classical nucleation-growth-agglomeration mechanism in the analysis of the Crystal Size Distribution. In the proposed model, the mechanism of formation of p...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 1998, Vol.18 (9), p.1351-1356
Main Authors: Rodríguez-Clemente, R., López-Macipe, A., Gómez-Morales, J., Torrent-Burgués, J., Castaño, V.M.
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Growth from solutions
Materials science
Methods of crystal growth
physics of crystal growth
Physics
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Summary:The interpretation of the precipitation data of hydroxyapatite in MSMPR systems presents several problems due to the lack of consistency of the classical nucleation-growth-agglomeration mechanism in the analysis of the Crystal Size Distribution. In the proposed model, the mechanism of formation of particles starts with a nucleation episode, followed by the aggregation of supercritical nuclei ruled by surface energy excess, which counterbalance the repulsive forces between particles. The aggregates agglomerate, forming solid bridges, and the agglomerates continue to grow as distinct particles due to repulsive forces.
ISSN:0955-2219
1873-619X
DOI:10.1016/S0955-2219(98)00064-8