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Síntese da hidroxiapatita e refinamento estrutural por difração de raios-x
| Content Provider | Scilit |
|---|---|
| Author | de Araújo, Jorge Correa Sena, Lídia Bastos, Ivan Napoleão de Almeida Soares, Glória Dulce |
| Copyright Year | 2007 |
| Description | A sample of hydroxyapatite was synthesized and its crystalline structure was analyzed by X-ray diffraction by means of the Rietveld method. Two functions were used to fit the peak profiles, modified Voigt (TCHZ) and Pearson VII. The occupational factors and lattice parameters obtained by both models show that the sample does not contain relevant cationic substitutions. The interatomic distances from Ca1 to oxygens O1, O2 and O3 were adequate for a pure hydroxyapatite without defect at site Ca1. Besides, the use of multiple lines in planes (300) and (002) associated with the model Pearson VII resulted in good agreement with the TCHZ model with respect to the size-strain effectswith an ellipsoidal shape of crystallites. In conclusion, the procedures adopted in the synthesis of hydroxyapatite produced a pure and crystalline material. The experimental results of transmission electron microscopy confirmed the predicted shape of crystals |
| Related Links | http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0100-40422007000800011&lng=pt&nrm=iso&tlng=pt |
| Ending Page | 1859 |
| Page Count | 7 |
| Starting Page | 1853 |
| ISSN | 01004042 |
| e-ISSN | 01004042 |
| DOI | 10.1590/s0100-40422007000800011 |
| Journal | Química Nova |
| Issue Number | 8 |
| Volume Number | 30 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 2007-01-01 |
| Access Restriction | Open |
| Subject Keyword | Química Nova Dentistry and Oral Surgery Sntese Da Da Hidroxiapatita Refinamento Estrutural Por Difrao Raios X Estrutural Por |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
