Influence of process conditions on hydroxyapatite crystallinity obtained by direct crystallization
| Autor: | Marcelo Martins Seckler, Marco Giulietti, José Vicente Valarelli, R. Rodríguez-Clemente, Silas Derenzo, M. Danese |
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| Jazyk: | angličtina |
| Rok vydání: | 1999 |
| Předmět: |
Materials science
Biomaterial crystallization recipitation Mineralogy Bioceramic law.invention chemistry.chemical_compound Crystallinity law lcsh:TA401-492 General Materials Science Crystallization Supersaturation biomaterial crystallization precipitation Mechanical Engineering Bioceramics Biomaterial hydroxyapatite Condensed Matter Physics Chemical engineering chemistry Mechanics of Materials bioceramic Carbonate lcsh:Materials of engineering and construction. Mechanics of materials Particle size Stoichiometry |
| Zdroj: | Materials Research, Vol 2, Iss 2, Pp 59-62 (1999) Materials Research, Volume: 2, Issue: 2, Pages: 59-62, Published: APR 1999 Materials Research v.2 n.2 1999 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1516-1439 |
| Popis: | Crystallization from solutions was applied to produce stoichiometric and crystalline hydroxyapatite (HAP) suitable for use as a biomaterial. This was accomplished by keeping a low supersaturation through the following procedure: semi-continuous operating mode, slow reactant addition rate and addition of a calcium complexing agent. A high temperature (90 °C) and probably carbonate incorporation also favored the formation of a well crystallized material. A qualitative correlation was found between the supersaturation and HAP properties such as crystallinity and particle size Near-stoichiometric and well crystallized hydroxyapatite was obtained by means of a semi-continuous procedure. Changes in crystallinity and particle size due to varying reagent addition rate, base concentration and pH were consistent with the corresponding changes in the su- Financiadora de Estudos e Projetos do Ministério de Ciência e Tecnologia, Brazil - and CYTED - Programa Iberoamericano de Ciencia y Tecnologia para el Desarollo, proj. VIII.6, Spain - for the financial support. |
| Databáze: | OpenAIRE |
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