The Peculiarities of Hydration of Composite Material from Nanodispersed Silica and Hyaluronic Acid

Authors

  • A. P. Ugnivenko Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • V. M. Gun'ko Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • T. V. Krupskaya Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • V. N. Barvinchenko Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine
  • V. V. Turov Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine

Abstract

Hydration of various composites of A-300 and hyaluronic acid has been studied using low-temperature 1H NMR spectroscopy. It was found that all the water adsorbed on composite in air is in strongly associated state. Chloroform media has a small effect on the spectral and thermodynamic characteristics of adsorbed water while a large part of water bound to composite in acetonitrile is in weakly associated state and the chemical shift is reduced to 3 ppm. Signals of SAW and WAW are observed separately in mixed solvents CD3CN?CDCl3. Aqueous solution of hydrochloric acid or hydrogen peroxide interacting with silica can be decomposed into the system of clusters containing various amounts of HCl or H2O2. It has been shown that clusters of strongly associated water weakly dissolve acetonitrile or acids.

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(1)
Ugnivenko, A. P.; Gun’ko, V. M.; Krupskaya, T. V.; Barvinchenko, V. N.; Turov, V. V. The Peculiarities of Hydration of Composite Material from Nanodispersed Silica and Hyaluronic Acid. Him. Fiz. Tehnol. Poverhni 2012, 3, 253-264.

Issue

Vol. 3 No. 3 (2012): Chemistry, Physics and Technology of Surface / Himia, Fizika ta Tehnologia Poverhni

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