Synthesis and characterization of nanocrystalline composites containing calcium hydroxyapatite and glycine

Synthesis and characterization of nanocrystalline composites containing calcium hydroxyapatite... Composites of hydroxyapatite (HA) with glycine (Gly), designed for bone repair, were prepared and thoroughly characterized using various physicochemical methods (PXRD, TEM, EDXMA, FT-IR and UV-spectrophotometry). It was proved that the de novo synthesis of HA in the presence of Gly is capable of introducing the amino acid into the crystal lattice. This was particularly manifested by a decrease in crystallinity of HA and concentration of its structural hydroxyl groups, and by a significant impact on the dimensions of the crystal unit cell of HA. An IR band at about 1440 cm−1 of ionized carboxyl groups was uniquely assigned to Gly residing in the crystal interior of HA. Another ascertained location of Gly was the crystal surface, easily attainable by a simple adsorption. The quantitative analysis of Gly in the samples washed with water demonstrated that the adsorbed amino acid was relatively well bound to HA crystals. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Solid State Chemistry Elsevier

Synthesis and characterization of nanocrystalline composites containing calcium hydroxyapatite and glycine

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier Inc.
ISSN
0022-4596
eISSN
1095-726X
D.O.I.
10.1016/j.jssc.2018.05.004
Publisher site
See Article on Publisher Site

Abstract

Composites of hydroxyapatite (HA) with glycine (Gly), designed for bone repair, were prepared and thoroughly characterized using various physicochemical methods (PXRD, TEM, EDXMA, FT-IR and UV-spectrophotometry). It was proved that the de novo synthesis of HA in the presence of Gly is capable of introducing the amino acid into the crystal lattice. This was particularly manifested by a decrease in crystallinity of HA and concentration of its structural hydroxyl groups, and by a significant impact on the dimensions of the crystal unit cell of HA. An IR band at about 1440 cm−1 of ionized carboxyl groups was uniquely assigned to Gly residing in the crystal interior of HA. Another ascertained location of Gly was the crystal surface, easily attainable by a simple adsorption. The quantitative analysis of Gly in the samples washed with water demonstrated that the adsorbed amino acid was relatively well bound to HA crystals.

Journal

Journal of Solid State ChemistryElsevier

Published: Aug 1, 2018

References

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