Influence of processing parameters on structural characteristics of porous calcium phosphate samples: a study using an experimental design method
Synthetic porous ceramics can be used as three-dimensional scaffolds for bone repair. The aim of this work is to correlate process parameters with scaffolds structural characteristics. The factorial 2 level experimental design was chosen to study the effect of the Ca/P ratio (1.58 or 1.67), calcination temperature (1000 or 1150 °C) and porogen content (20 or 40%) on the calcium phosphate samples characteristics. The influence of such parameters was determined by X-ray diffraction, infrared spectroscopy and image analysis. It was observed that phase composition was basically a function of the Ca/P ratio of the raw material. The use of the porogen did not alter the hydroxyapatite (HA)/tricalcium phosphate (TCP) content, but induced changes in the relative content of TCP phase (alpha or beta). It is possible to design a porous sample with defined characteristics, and the model herein used can be considered as having a good predictive power.
Main Authors: | Ugarte,José Fernandes de Oliveira, Sena,Lidia Ágata de, Pérez,Carlos André de Castro, Aguiar,Paula Fernandes de, Rossi,Alexandre Malta, Soares,Glória Almeida |
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Format: | Digital revista |
Language: | English |
Published: |
ABM, ABC, ABPol
2005
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Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392005000100013 |
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