In:
Scientific Reports, Springer Science and Business Media LLC, Vol. 9, No. 1 ( 2019-10-16)
Abstract:
Nanopowders of hydroxyapatite (HA), modified by magnesium (MgHA) and by silicon (SiHA) were obtained by liquid-phase microwave synthesis method. X-ray diffraction and IR spectroscopy results showed that Mg 2+ and SiO 4 4− ions were present in the synthesized products both as secondary phases and as part of the HA phase. Whitlockite was found in the magnesium-modified HA (MgHA) and larnite was found in the silicon-modified HA (SiHA); ion substitution for both materials resulted in solid solutions. In the synthesized samples of modified HA, the increase of particle size of powders was in the order HA 〈 SiHA 〈 MgHA, which was calculated through data specific surface area and measured pycnometric density of the powders. The Lewis acid sites (Ca 2+ , Mg 2+ , Si 4+ ) were present using spectral probes on the surface of the samples of HA, MgHA, and SiHA, and the acidity of these sites decreased in the order SiHA 〉 MgHA 〉 HA. The rates of calcium phosphate layer deposition on the surface of these materials at 37 °C in the model simulated body fluid solution showed similar dependence.
Type of Medium:
Online Resource
ISSN:
2045-2322
DOI:
10.1038/s41598-019-50777-x
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2019
detail.hit.zdb_id:
2615211-3
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