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 inJournal of the European Ceramic Society Vol. 18; no. 9; pp. 1351 - 1356
Main Authors Rodríguez-Clemente, R., López-Macipe, A., Gómez-Morales, J., Torrent-Burgués, J., Castaño, V.M.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Oxford Elsevier Ltd 1998
Elsevier
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
Inorganic compounds
Chemical precipitation
Calcium hydroxides
Heterogeneous nucleation
Hydroxyapatite
Experimental study
Hydroxides phosphates
Calcium phosphates
Solid clusters
Growth mechanism
Crystal growth from solutions
Crystal nucleation
Biomaterial
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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.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0955-2219
1873-619X
DOI:10.1016/S0955-2219(98)00064-8