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Details van artikel 9 van 22 gevonden artikelen
| Titel: |
Effect of temperature on crystallinity of carbonate apatite foam prepared from α-tricalcium phosphate by hydrothermal treatment |
| Auteur: |
Takeuchi, Akari Munar, Melvin L. Wakae, Hanae Maruta, Michito Matsuya, Shigeki Tsuru, Kanji Ishikawa, Kunio |
| Verschenen in: |
Bio-medical materials and engineering |
| Paginering: | Jaargang 19 (2009) nr. 2-3 pagina's 205-211 |
| Jaar: |
2009-07-06 |
| Inhoud: |
The effect of temperature on crystallinity of carbonate apatite (CAp) foam prepared from α-tricalcium phosphate (α-TCP) foam by hydrothermal treatment was investigated in the present study. The α-TCP foams were prepared through a conventional sintering method using polyurethane foam as template. Then, the resultant α-TCP foams were hydrothermally treated with Na2CO3 aqueous solution at 100°C, 150°C and 200°C for 72 h. After hydrothermal treatment, the cancellous bone-like macroporous structure of the α-TCP foams was maintained. However, microscopic morphology of the foams' frame significantly changed after the 72 h treatment period. The smooth surface of α-TCP foam disappeared and the whole surface was covered with plate-like deposits. The plate-like deposits treated at 150°C and 200°C had smooth surface while those treated at 100°C were constructed from spherical particles of approximately 200 nm in diameter. The results of X-ray diffraction and Fourier transform infrared analysis showed that α-TCP was completely converted to CAp and the crystallinity of CAp prepared at 100°C was significantly lower than those prepared at 150°C and 200°C. Hydrothermal treatment of α-TCP foam at 100°C allowed the formation of low-crystalline CAp foam but complete conversion needs a longer treatment period. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 9 van 22 gevonden artikelen
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