Dehydration of amorphous calcium-magnesium phosphate by air

  • V. Sinyev The Republican State Enterprise «Scientific Center for anti-infectious drugs», Almaty
  • L. Levchenko The Republican State Enterprise «Scientific Center for anti-infectious drugs», Almaty
  • G. Toxseitova The Republican State Enterprise «Scientific Center for anti-infectious drugs», Almaty
  • E. Sakhipov The Republican State Enterprise «Scientific Center for anti-infectious drugs», Almaty
  • А. Batyrbayeva K.I. Satpayev Kazakh National Technical University, Almaty
  • А. Тоktabayeva al-Farabi Kazakh National University
DOI: https://doi.org/10.15328/chemb_2014_160-68
Keywords: amorphous orthophosphate of calcium-magnesium, hydroxyapatite, dehydration, thermal analysis, IK-spectrums

Abstract

According to results of the thermal analysis and infra red spectroscopic measurements, synthetic amorphous orthophosphate of calcium-magnesium with the nuclear relation Ca/Mg/P≈2/1/2 containing in the structure about 80% of water on air at the room temperature loses almost all the moisture. Dehydration proceeds in four stages with formation of the intermediate phases containing a different amount of water and chemical bonds differing by bonding state of P-O. The remaining moisture is lost at heating in three stages. Thus phosphate changes at the level of chemical bonds.

References

1. LeGeros R.Z. Properties of osteoconductive biomaterials: calcium phosphates. Clinical Orthopaedics and Related Research. Lippincott Williams & Wilkins. Inc., 2002. 395. P.81–98.

2. Barinov S.M., Komlev V.S., Bioceramics based on calcium phosphate. [Biokeramika na osnove fosfatov kal'cija]. Moscow: Nauka, 2005. 204 p.

3. Mahamid J.,SharirA., Addadi L.,Weiner S. Amorphous calcium phosphate is a major component of the forming fin bones of zebrafish: Indications for an amorphous precursor phase. Proceedings Nat. Acad. Sci. USA (PNAS). 2008, 105. 35. P. 12748–12753.

4. Dorozhkin S. Nanodimensional and Nanocrystalline Calcium Orthophosphates. Am. J. Biomed. Engineering, 2012. 2. 3. P. 48–97.

5. Kanazawa T. Inorganic phosphate materialy. Kiev: Naukova Dumka, 1998. – 298 p.

6. Combes C., Rey C. Amorphous calcium phosphates: synthesis, properties and uses in biomaterials. Acta Biomaterialia, 2010. 6, 9. P. 3362–3378.

7. Dorozhkin S. Amorphouscalcium (ortho)phosphates. Acta Biomaterialia, 2010. 6, 12. P. 4457–4475.

8. LeGeros R.Z., Gatti A.M., Kijkowska R., Mijares D., LeGeros J.P. Mg-substituted tricalcium phosphates: formation and properties. Bioceramics-16. Proceedings of the 16th International Symposium on Ceramics in Medicine. Porto. Portugal. 6-9 November. 2004. P.127–130.

9. Sinyaev V.A., Shustikova E.S., Levchenko L.V.,, Tokseitova G.A.,Griggs D.A. Nature and behavior when heated precipitated calcium magnesium phosphate. Zh. prikl. Chemistry. – J.Applied chemistry, 2003. 76,9. 1415-1418 p.

10. Pleshko N., Boskey A., Mendelsohn R. Novel infrared method for the determination of crystallinity of hydroxyapatite materials. Biophys. J. , 1991. 60. P. 786–793.

11. Markovic M., Fowler B., Tung M. Preparation and comprehensive characterization of a calcium hydroxyapatite reference material. J. Res. Nat. Inst. Stand. Techn., 2004.109. P. 553–568.

Published
2014-04-28
How to Cite
Sinyev, V., Levchenko, L., Toxseitova, G., Sakhipov, E., BatyrbayevaА., & ТоktabayevaА. (2014). Dehydration of amorphous calcium-magnesium phosphate by air. Chemical Bulletin of Kazakh National University, 73(1), 60-68. https://doi.org/https://doi.org/10.15328/chemb_2014_160-68
Issue
Vol 73 No 1 (2014): Chemical Bulletin of Kazakh National University
Section
Organic and Polymers Chemistry
Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License (CC BY-NC-ND 4.0) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.