Bioactive Ceramics: Physical Chemistry
2011; Elsevier BV; Linguagem: Inglês
10.1016/b978-0-08-055294-1.00178-1
AutoresChristian Rey, Christèle Combes, Christophe Drouet, David Grossin,
Tópico(s)Calcium Carbonate Crystallization and Inhibition
ResumoThe chapter mainly discusses the physical–chemical properties of calcium phosphates (Ca-P), among the most important and most used bioactive ceramics. The main calcium phosphate compounds are presented with a brief description of their synthesis methods. Their characterization, using different techniques, including chemical analyses, X-ray diffraction, Fourier transform infrared (FTIR), Raman and solid-state nuclear magnetic resonance (NMR) spectrometries, and scanning and transmission electron microscopies (SEM and TEM), is reviewed and the different information obtained are discussed. The thermal stability and the relationships between different Ca-P phases are then described. The biological properties of Ca-P are related to their behavior in solution; their solubility, transformations and hydrolysis, nucleation ability, and surface properties and reactivity (ion exchange, adsorption) are presented especially in the case of apatites. The biological response regarding bioactivity, biodegradation, and simulated body fluid (SBF) testing is discussed from the point of view of the Ca-P physical chemistry. Several examples of applications are then proposed as ceramics, coatings, cements, and composite materials. A brief presentation of other bioactive mineral compounds follows (oxides and hydroxides, calcium carbonate, calcium sulfate).
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