TY  - CONF
AU  - Janaćković, Đorđe
AU  - Janković, Ivona
AU  - Petrović, R
AU  - Kostić-Gvozdenović, L.
AU  - Milonjić, Slobodan
AU  - Uskoković, Dragan
PY  - 2003
UR  - https://dais.sanu.ac.rs/123456789/3285
AB  - In this paper surface properties of calcium-hydroxyapatite, synthesized by modified hydrothermal reaction of urea and Ca(EDTA)(2-) in phosphate solutions, as well as the dependence of calcium hydroxyapatite dispersion stability on pH were determined. The specific surface area of calcium-hydroxyapatite was experimentally found to be 67 m(2)/g. The point of zero charge (PZC) of indifferent KCl electrolyte of 6.8 +/- 0.1 was determined by the batch equilibration method. From the dependence of surface charge density on pH and electrolyte concentration, the intrinsic equilibrium constant of surface groups p K-a2(int) was determined to be 8.3 +/- 0.1, while p K-a1(int) calculated from the pK(a2)(int) and point of zero charge values, is 5.3 +/- 0.1. Hydroxyapatite suspension stability was investigated, in the pH range from 7 to 12, it was revealed that the most stable dispersion at pH 10.
C3  - 15th International Symposium on Ceramics in Medicine, Dec 04-08, 2002, Univ Technol, Sydney, Australia
T1  - Surface properties of HAP particles obtained by hydrothermal decomposition of urea and calcium-EDTA chelates
SP  - 437
EP  - 440
DO  - 10.4028/www.scientific.net/KEM.240-242.437
UR  - https://hdl.handle.net/21.15107/rcub_dais_3285
ER  - 

@conference{
author = "Janaćković, Đorđe and Janković, Ivona and Petrović, R and Kostić-Gvozdenović, L. and Milonjić, Slobodan and Uskoković, Dragan",
year = "2003",
abstract = "In this paper surface properties of calcium-hydroxyapatite, synthesized by modified hydrothermal reaction of urea and Ca(EDTA)(2-) in phosphate solutions, as well as the dependence of calcium hydroxyapatite dispersion stability on pH were determined. The specific surface area of calcium-hydroxyapatite was experimentally found to be 67 m(2)/g. The point of zero charge (PZC) of indifferent KCl electrolyte of 6.8 +/- 0.1 was determined by the batch equilibration method. From the dependence of surface charge density on pH and electrolyte concentration, the intrinsic equilibrium constant of surface groups p K-a2(int) was determined to be 8.3 +/- 0.1, while p K-a1(int) calculated from the pK(a2)(int) and point of zero charge values, is 5.3 +/- 0.1. Hydroxyapatite suspension stability was investigated, in the pH range from 7 to 12, it was revealed that the most stable dispersion at pH 10.",
journal = "15th International Symposium on Ceramics in Medicine, Dec 04-08, 2002, Univ Technol, Sydney, Australia",
title = "Surface properties of HAP particles obtained by hydrothermal decomposition of urea and calcium-EDTA chelates",
pages = "437-440",
doi = "10.4028/www.scientific.net/KEM.240-242.437",
url = "https://hdl.handle.net/21.15107/rcub_dais_3285"
}

Janaćković, Đ., Janković, I., Petrović, R., Kostić-Gvozdenović, L., Milonjić, S.,& Uskoković, D.. (2003). Surface properties of HAP particles obtained by hydrothermal decomposition of urea and calcium-EDTA chelates. in 15th International Symposium on Ceramics in Medicine, Dec 04-08, 2002, Univ Technol, Sydney, Australia, 437-440.
https://doi.org/10.4028/www.scientific.net/KEM.240-242.437
https://hdl.handle.net/21.15107/rcub_dais_3285

Janaćković Đ, Janković I, Petrović R, Kostić-Gvozdenović L, Milonjić S, Uskoković D. Surface properties of HAP particles obtained by hydrothermal decomposition of urea and calcium-EDTA chelates. in 15th International Symposium on Ceramics in Medicine, Dec 04-08, 2002, Univ Technol, Sydney, Australia. 2003;:437-440.
doi:10.4028/www.scientific.net/KEM.240-242.437
https://hdl.handle.net/21.15107/rcub_dais_3285 .

Janaćković, Đorđe, Janković, Ivona, Petrović, R, Kostić-Gvozdenović, L., Milonjić, Slobodan, Uskoković, Dragan, "Surface properties of HAP particles obtained by hydrothermal decomposition of urea and calcium-EDTA chelates" in 15th International Symposium on Ceramics in Medicine, Dec 04-08, 2002, Univ Technol, Sydney, Australia (2003):437-440,
https://doi.org/10.4028/www.scientific.net/KEM.240-242.437 .,
https://hdl.handle.net/21.15107/rcub_dais_3285 .