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Nanocomposites based on modified chitosan and titanium oxide

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Abstract

The effect of primary amino groups and molecular mass of chitosan on the stability of suspensions based on nanoscale TiO2 dispersions in acidic solutions of various concentrations at pH 2.5 was studied. In the case of chitosan prepared according to a commercialized process, the stability of TiO2 suspensions was low and depended on the concentration of the polymer solution. Solutions of low-molecular-mass highly deacetylated chitosan prepared by solid-phase synthesis stabilized a dispersion of nanosized TiO2 particles for a very long time. Nanocomposites based on a chitosan-PVA graft copolymer and TiO2 were prepared, in which the initial filler dispersion is retained up to very high filling ratios. A potential use of these nanocomposites in photocatalytic processes is discussed. The results of this study can be used for refining engineering procedures and processes for the manufacture of new biocompatible, bioactive, and biodegradable functional composite materials based on chitosan and synthetic polymers.

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Authors and Affiliations

  1. Institute of Synthetic Polymer Materials, Russian Academy of Sciences, ul. Profsoyuznaya 70, Moscow, 117393, Russia

    A. N. Ozerin, A. N. Zelenetskii, T. A. Akopova, L. A. Ozerina, N. M. Surin & A. S. Kechek’yan

  2. Karpov Institute of Physical Chemistry, Federal State Unitary Enterprise, ul. Vorontsovo pole 10, Moscow, 105064, Russia

    O. B. Pavlova-Verevkina

Authors
  1. A. N. Ozerin
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  2. A. N. Zelenetskii
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  3. T. A. Akopova
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  4. O. B. Pavlova-Verevkina
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  5. L. A. Ozerina
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  6. N. M. Surin
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  7. A. S. Kechek’yan
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Additional information

Original Russian Text © A.N. Ozerin, A.N. Zelenetskii, T.A. Akopova, O.B. Pavlova-Verevkina, L.A. Ozerina, N.M. Surin, A.S. Kechek’yan, 2006, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2006, Vol. 48, No. 6, pp. 983–989.

This work was supported by the Russian Foundation for Basic Research, project no. 05-03-33120a.

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Ozerin, A.N., Zelenetskii, A.N., Akopova, T.A. et al. Nanocomposites based on modified chitosan and titanium oxide. Polym. Sci. Ser. A 48, 638–643 (2006). https://doi.org/10.1134/S0965545X06060137

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  • DOI: https://doi.org/10.1134/S0965545X06060137

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