Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method
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Jokić, Bojan M.
Janković-Častvan, Ivona

Veljović, Đorđe N.

Bučevac, Dušan

Obradović-Đuričić, K.
Petrović, R.
Janaćković, Đorđe T.

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The aim of this work is the investigation of alpha-tricalcium-phosphate (alpha-TCP) formation from calcium-deficient hydroxyapatite (CDHAP), synthesized by hydrothermal method from CaCl2, EDTA, NaH2PO4 center dot 2H(2)O and urea as precursors at 160 degrees C. Further, the influence of Ca/P ratios in the starting solution on alpha-TCP formation and the settings of obtained cements in simulated body fluid (SBF) were investigated. According to the results of X-ray, FTIR and SEM analyses, it is shown that CDHAP is transformed to beta-TCP at 800 degrees C, and to alpha-TCP at 1200 degrees C. Almost complete transformation of CDHAP into alpha-TCP occur after heating at 1500 degrees C in the case when Ca/P ratio in starting solution was 1,42. Cement powder mixed with the cement liquid (2.5 wt.% solution of Na2HPO4) completely hydrolyzes after 7 days in SBF, forming only CDHAP phase.
Keywords:
alpha-TCP cements / synthesis / calcium deficient hydroxyapatiteSource:
Journal of Optoelectronics and Advanced Materials, 2007, 9, 6, 1904-1910Collections
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VinčaTY - JOUR AU - Jokić, Bojan M. AU - Janković-Častvan, Ivona AU - Veljović, Đorđe N. AU - Bučevac, Dušan AU - Obradović-Đuričić, K. AU - Petrović, R. AU - Janaćković, Đorđe T. PY - 2007 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2574 AB - The aim of this work is the investigation of alpha-tricalcium-phosphate (alpha-TCP) formation from calcium-deficient hydroxyapatite (CDHAP), synthesized by hydrothermal method from CaCl2, EDTA, NaH2PO4 center dot 2H(2)O and urea as precursors at 160 degrees C. Further, the influence of Ca/P ratios in the starting solution on alpha-TCP formation and the settings of obtained cements in simulated body fluid (SBF) were investigated. According to the results of X-ray, FTIR and SEM analyses, it is shown that CDHAP is transformed to beta-TCP at 800 degrees C, and to alpha-TCP at 1200 degrees C. Almost complete transformation of CDHAP into alpha-TCP occur after heating at 1500 degrees C in the case when Ca/P ratio in starting solution was 1,42. Cement powder mixed with the cement liquid (2.5 wt.% solution of Na2HPO4) completely hydrolyzes after 7 days in SBF, forming only CDHAP phase. T2 - Journal of Optoelectronics and Advanced Materials T1 - Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method VL - 9 IS - 6 SP - 1904 EP - 1910 UR - https://hdl.handle.net/21.15107/rcub_vinar_2574 ER -
@article{ author = "Jokić, Bojan M. and Janković-Častvan, Ivona and Veljović, Đorđe N. and Bučevac, Dušan and Obradović-Đuričić, K. and Petrović, R. and Janaćković, Đorđe T.", year = "2007", abstract = "The aim of this work is the investigation of alpha-tricalcium-phosphate (alpha-TCP) formation from calcium-deficient hydroxyapatite (CDHAP), synthesized by hydrothermal method from CaCl2, EDTA, NaH2PO4 center dot 2H(2)O and urea as precursors at 160 degrees C. Further, the influence of Ca/P ratios in the starting solution on alpha-TCP formation and the settings of obtained cements in simulated body fluid (SBF) were investigated. According to the results of X-ray, FTIR and SEM analyses, it is shown that CDHAP is transformed to beta-TCP at 800 degrees C, and to alpha-TCP at 1200 degrees C. Almost complete transformation of CDHAP into alpha-TCP occur after heating at 1500 degrees C in the case when Ca/P ratio in starting solution was 1,42. Cement powder mixed with the cement liquid (2.5 wt.% solution of Na2HPO4) completely hydrolyzes after 7 days in SBF, forming only CDHAP phase.", journal = "Journal of Optoelectronics and Advanced Materials", title = "Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method", volume = "9", number = "6", pages = "1904-1910", url = "https://hdl.handle.net/21.15107/rcub_vinar_2574" }
Jokić, B. M., Janković-Častvan, I., Veljović, Đ. N., Bučevac, D., Obradović-Đuričić, K., Petrović, R.,& Janaćković, Đ. T.. (2007). Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method. in Journal of Optoelectronics and Advanced Materials, 9(6), 1904-1910. https://hdl.handle.net/21.15107/rcub_vinar_2574
Jokić BM, Janković-Častvan I, Veljović ĐN, Bučevac D, Obradović-Đuričić K, Petrović R, Janaćković ĐT. Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method. in Journal of Optoelectronics and Advanced Materials. 2007;9(6):1904-1910. https://hdl.handle.net/21.15107/rcub_vinar_2574 .
Jokić, Bojan M., Janković-Častvan, Ivona, Veljović, Đorđe N., Bučevac, Dušan, Obradović-Đuričić, K., Petrović, R., Janaćković, Đorđe T., "Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method" in Journal of Optoelectronics and Advanced Materials, 9, no. 6 (2007):1904-1910, https://hdl.handle.net/21.15107/rcub_vinar_2574 .