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.
TY - JOUR
AU - Jokić, Bojan
AU - Janković-Častvan, Ivona
AU - Veljović, Đorđe
AU - Bučevac, Dušan
AU - Obradović-Đuričić, Kosovka
AU - Petrović, Rada
AU - Janaćković, Đorđe
PY - 2007
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1030
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.
PB - Natl Inst Optoelectronics, Bucharest-Magurele
T2 - Journal of Optoelectronics and Advanced Materials
T1 - Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method
EP - 1910
IS - 6
SP - 1904
VL - 9
UR - https://hdl.handle.net/21.15107/rcub_vinar_2574
ER -
@article{
author = "Jokić, Bojan and Janković-Častvan, Ivona and Veljović, Đorđe and Bučevac, Dušan and Obradović-Đuričić, Kosovka and Petrović, Rada and Janaćković, Đorđe",
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.",
publisher = "Natl Inst Optoelectronics, Bucharest-Magurele",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method",
pages = "1910-1904",
number = "6",
volume = "9",
url = "https://hdl.handle.net/21.15107/rcub_vinar_2574"
}
Jokić, B., Janković-Častvan, I., Veljović, Đ., Bučevac, D., Obradović-Đuričić, K., Petrović, R.,& Janaćković, Đ.. (2007). Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method. in Journal of Optoelectronics and Advanced Materials
Natl Inst Optoelectronics, Bucharest-Magurele., 9(6), 1904-1910.
https://hdl.handle.net/21.15107/rcub_vinar_2574
Jokić B, Janković-Častvan I, Veljović Đ, Bučevac D, Obradović-Đuričić K, Petrović R, Janaćković Đ. 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, Janković-Častvan, Ivona, Veljović, Đorđe, Bučevac, Dušan, Obradović-Đuričić, Kosovka, Petrović, Rada, Janaćković, Đorđe, "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 .
