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Hydrolysis of alpha-tricalcium phosphate in simulated body fluid and dehydration behavior during the drying process

TitleHydrolysis of alpha-tricalcium phosphate in simulated body fluid and dehydration behavior during the drying process
Publication TypeJournal Article
Year of Publication2007
AuthorsWei X, Ugurlu O, Akinc M
Journal TitleJournal of the American Ceramic Society
Volume90
Pages2315-2321
Date PublishedAug
Type of ArticleArticle
ISBN Number0002-7820
Accession NumberISI:000248379600002
KeywordsAMORPHOUS CALCIUM-PHOSPHATE, APATITE, bone, CEMENT, FORMATION IN-VITRO, hydroxyapatite, temperature, TRANSFORMATION, transition
Abstract

The hydrolysis of a-tricalcium phosphate (alpha-TCP) in a simulated body fluid (SBF) at 37 degrees C was investigated. The hydration rate was found to be slower in SBF than that in deionized water. The concentration of ions in SBF was monitored by ICP. The hydrolysis product, which was characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier transform infra red, and X-ray photoelectron spectroscopy, was determined to be carbonate-containing, calcium-deficient hydroxyapatite (CO3-CDHAp) with Mg2+, Na+, and Cl- impurities similar to the biological apatite. An amorphous layer on the alpha-TCP surface was found to be the precursor of the apatite phase, which may either form crystalline apatite or may decompose back to alpha-TCP at a lower temperature.
DOI10.1111/j.1551-2916.2007.01682.x
Alternate JournalJ. Am. Ceram. Soc.