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Self-organization and the effects of selenium-polymer mass ratio in solution on the morphology of selenium-bearing nanostructures based on hydroxyethylcellulose

The systems show the adsorption of considerable numbers of hydroxyethylcellulose HEC macromolecules on selenium nanoparticles with the formation of a supermolecular close-packed nanostructure for form close to spherical. As the mass fraction of selenium in solution increases up to ν = 0.1, there is a considerable increase in Mw for the nanostructure, with the inertial radius R*g and hydrodynamic radius R*h only slightly and nonmonotonically dependent on the selenium concentration in the aqueous solution. On the other hand, the mean density of the nanostructures Φ* is substantially dependent on the selenium concentration in the solution. The point ν = 0.1 corresponds to a turning point in the dependence of the molecular conformation parameters on the mass selenium: polymer ratio in solution. Probably, ν = 0.1 corresponds to saturation of the adsorption capacity in the amorphous selenium nanoparticles.

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Correspondence to N. P. Novoselov.

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Translated from Khimicheskie Volokna, No. 4, pp. 42–46, July–August, 2008.

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Novoselov, N.P., Ivanov, D.A., Valueva, S.V. et al. Self-organization and the effects of selenium-polymer mass ratio in solution on the morphology of selenium-bearing nanostructures based on hydroxyethylcellulose. Fibre Chem 40, 340–344 (2008). https://doi.org/10.1007/s10692-009-9057-6

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Keywords

  • Selenium
  • Hydrodynamic Radius
  • Selenium Concentration
  • Kuhn Segment
  • Selenium Nanoparticles