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Spiridonov V. S., Mingaliov P. G., Lisichkin G. V.
Chemical Modification of Silica and Hydroxyapatite with Organoboron
Compounds
Abstract
The article is devoted to the investigation of the modifying process of
porous mineral supports (silica and hydroxylapatite) with organoboron
compounds. It is shown that activity of alkylboronic acids esters and
anhydrides in the modifying reaction is practically equal. Hydrolytic stability
of the resulting bonded layer is studied. It is shown that for silica the layer
can be removed from the surface for 15 minutes. The bonded layer on the surface
of hydroxylapatite is more stable; its total destruction does not occur even
after 2 hours of hydrolysis. Authors believe that this is caused by a
donor-acceptor interaction between boron atoms and phosphate anions of the
surface.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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