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Structure of the dispersive medium and sedimentation resistance of suspensions of detonation nanodiamonds

  • Modification of Surface and the Physicochemical Properties of Nanodiamonds
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Abstract

The specific features of the stabilization of suspensions formed by detonation nanodiamonds in polar and nonpolar media are investigated. It is demonstrated that the polydispersity of nanodiamond particles in an aqueous medium periodically changes in an ultrasonic field. The conditions are determined under which the optimum dispersity can be maintained for a long time. A technique is devised for chemical modification of the nanodiamond surface through the grafting of organosilyl groups. This technique makes it possible to prepare finely dispersed suspensions of nanodiamonds in nonpolar organic media. A model is proposed for an aggregate that consists of detonation nanodiamond particles and is stabilized through hydrogen bonds formed by functional groups of different types.

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References

  1. V. Yu. Dolmatov, Ultradispersed Detonation Diamonds: Production, Properties, and Application (SPbGPU, St. Petersburg, 2003).

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  3. L. V. Agibalova, A. P. Voznyakovski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\), V. Yu. Dolmatov, and V. V. Klyubin, Sverkhtverd. Mater., No. 4, 87 (1998).

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Authors and Affiliations

  1. Lebedev Research Institute of Synthetic Rubber, Federal State Unitary Enterprise, Gapsal’skaya ul. 1, St. Petersburg, 198035, Russia

    A. Yu. Neverovskaya & A. P. Voznyakovskii

  2. Technolog Special Design Bureau, State Technological Institute, St. Petersburg, 192076, Russia

    V. Yu. Dolmatov

Authors
  1. A. Yu. Neverovskaya
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  2. A. P. Voznyakovskii
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  3. V. Yu. Dolmatov
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__________

Translated from Fizika Tverdogo Tela, Vol. 46, No. 4, 2004, pp. 646–648.

Original Russian Text Copyright © 2004 by Neverovskaya, Voznyakovski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \), Dolmatov.

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Neverovskaya, A.Y., Voznyakovskii, A.P. & Dolmatov, V.Y. Structure of the dispersive medium and sedimentation resistance of suspensions of detonation nanodiamonds. Phys. Solid State 46, 662–664 (2004). https://doi.org/10.1134/1.1711445

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  • DOI: https://doi.org/10.1134/1.1711445

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