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Combining particle size distribution and isothermal calorimetry data to determine the reaction kinetics of α-tricalcium phosphate–water mixtures

Paper ID Volume ID Publish Year Pages File Format Full-Text
2188 102 2006 6 PDF Available
Title
Combining particle size distribution and isothermal calorimetry data to determine the reaction kinetics of α-tricalcium phosphate–water mixtures
Abstract

Many calcium phosphate bone substitutes are based on the use of α-tricalcium phosphate (α-TCP) powder. This compound has been intensively studied, but some aspects of α-TCP reactivity are still controversial. The goal of this study was to determine the setting kinetics of α-TCP based on a new approach that compared particle size distribution data to isothermal calorimetry data. Results indicated that α-TCP conversion is mostly controlled by surface reactions, with at later stages a diffusion-controlled mechanism. The presence of an X-ray amorphous α-TCP fraction in the crystalline α-TCP powder increased the dissolution rate threefold, without modifying the reaction mechanism.

Keywords
Calcium phosphate; Cement; Kinetics; Particle size distribution; Bone substitute
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Combining particle size distribution and isothermal calorimetry data to determine the reaction kinetics of α-tricalcium phosphate–water mixtures
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 2, Issue 3, May 2006, Pages 343–348
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us