Hydroxyapatite synthesis

Rameshbabu N, et al. Antibacterial nanosized silver substituted hydroxyapatite synthesis and characterization. J Biomed Mater Res A 2007 80(3) 581—91. 

Thermal Analysis on Hydroxyapatite Synthesis through Mechanochemical Method... 

Jarcho, M. (1976). Hydroxyapatite synthesis and characterization in dense poly-crystaUine forms. J. Mater. Sci. 1 2027-35. 

Chen, C.-W., Oakes, C.S., Byrappa, K., Riman, R.E., Brown, K., TenHuisen, K. S. and Janas, V.F. (2004) Synthesis, characterization, and dispersion properties of hydroxyapatite prepared by mechanochemical-hydrothermal... 

Hypocalcemia directly increases PTH synthesis and release and inhibits calcitonin release. PTH in turn restores plasma calcium by initially stimulating transport of free or labile calcium from bone into the blood. PTH also increases renal 1,25-dihydroxycholecalciferol (1,25-(0H)2D3) production, which is the most active form of D3. 1,25-(0H)2D3 induces enterocyte differentiation in the intestine, which in turn results in increased absorption of calcium. Finally, during long periods of hypocalcemia, PTH can mobilize more stable calcium deep in the hydroxyapatite of bone by activating deep osteoclasts. 

S. Ben Abdelkader, I. Khattech, C. Rey, M. Jemal, Synthesis, characterization and thermochemistry of calcium-magnesium hydroxyapatite and fluorapatite, Thermochim. Acta 376 (2001) 25-36. 

There are various processes for synthesizing hydroxyapatite in aqua phase, such as hydrolyzation [223], acid-alkali reaction [224], hydrothermal process [225], coprecipitation [226], sol-gel synthesis [227], aerosol pyrolysis [228], and micro emulsion synthesis [229], etc. 

The structure and dimensions of the SCISR used for the synthesis of nano hydroxyapatite by double decomposition-precipitation are the same as those for the... 

Roy, D. M., Eysel, W. and Dinger, D. (1974). Hydrothermal Synthesis of various carbonate containing calcium hydroxyapatite. Mater. Res. Bull., (9) 35-40. 

Aoki, H., Kato. K. and Shiba, M. (1972). Synthesis of hydroxyapatite under hydrothermal conditions. J. Dent. Apparatus and Materials, 13(27) 170-176. 

Dean-Mo, Liu, Troczynski, T.. Wenjea, J. and Tseng, J. (2001). Water based sol-gel synthesis of hydroxyapatite process development. Biomaterials, 22 1721-... 

Yuan, Jun, Wu, Yuan and Zheng, Qixin (2005). Synthesis of nano rods/whiskers of hydroxyapatite by precipitation in impinging streams. Proc. Chemistry Chemical Industry Conf, 345-348, Wuhan, China (in Chinese). 

Mori K, Yamaguchi K, Hara T et al (2002) Controlled synthesis of hydroxyapatite-supported palladium complexes as highly efficient heterogeneous catalysts. J Am Chem Soc 124(39) 11572-11573... 

Methods for the synthesis of calcium hydroxyapatite have been reported in the past,1,2 but all of them produced either poorly crystallized or somewhat impure products. The following procedure produces a very well-crystallized compound which has a high degree of purity. The reaction is simply the hydrolysis of calcium monohydrogen phosphate to hydroxyapatite in a closed system. The major disadvantage is the small amount of material obtained from each hydrolysis because of the small capacity of the bombs used. Larger reaction vessels would minimize this objection. 

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