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Thermokinetic analysis of the hydration process of calcium phosphate cement.
- Source :
- Journal of Thermal Analysis & Calorimetry; Sep2006, Vol. 85 Issue 3, p785-789, 5p, 1 Black and White Photograph, 1 Chart, 5 Graphs
- Publication Year :
- 2006
-
Abstract
- A microcalorimeter (Setaram c-80) was used to study the thermokinetics of the hydration process of calcium phosphate cement (CPC), a biocompatible biomaterial used in bone repair. The hydration enthalpy was determined to be 35.8 J g<superscript>–1</superscript> at 37.0°C when up to 80 mg CPC was dissolved in 2 mL of citric buffer. In the present study, parameters related to time constants of the calorimeter were obtained by fitting the recorded thermal curves with the function θ= Ae<superscript>–?t</superscript>(1– e<superscript>–?2t</superscript>). The real thermogenetic curves were then retrieved with Tian function and the transformation rate of the hydration process of CPC was found to follow the equation α=1–[1–(0.0075 t)<superscript>3</superscript>]<superscript>3</superscript>. The microstructures of the hydrated CPC were examined by scanning electron microscopy. The nano-scale flake microstructures are due to crystallization of calcium phosphate and they could contribute to the good biocompatibility and high bioactivity. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13886150
- Volume :
- 85
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of Thermal Analysis & Calorimetry
- Publication Type :
- Academic Journal
- Accession number :
- 22344250
- Full Text :
- https://doi.org/10.1007/s10973-005-7433-x