Rheologica Acta

, Volume 53, Issue 5–6, pp 467–475 | Cite as

Rheological properties of polyethylene/metaboric acid thermoplastic blends

  • Sergei O. Ilyin
  • Alexander Y. Malkin
  • Valery G. Kulichikhin
  • Alexander Yu. Shaulov
  • Elena V. Stegno
  • Alexander A. Berlin
  • Stanislav A. PatlazhanEmail author
Original Contribution


The rheological properties of molten low-density polyethylene/metaboric acid blends were studied. It was found that the blend behavior can be rather different, depending on volume fraction of the inorganic component. Specifically, at some concentration of metaboric acid, the dynamic moduli and the Newtonian viscosity of the blends demonstrate a jump-like change. The concentration threshold depends on temperature and equals to 21.9 and 14.1 vol %, at 150 and 180 C, respectively. In the concentration range below the threshold, the gain in the content of inorganic component results in an enhancement of the blend dynamic moduli and viscosity, without changing the general character of the rheological behavior of composition in the region of linear response. On the other hand, at higher concentrations of metaboric acid, the yield stress is observed, and the elastic modulus in the linear region of mechanical behavior becomes virtually independent of frequency. It was suggested that the rheological behavior of blends is related to a spontaneous change in their structure as well as planar molecular structure of the inorganic component.


Polymer blend Viscoelasticity Shear viscosity Yielding Percolation 



The authors thank T.N. Filippova for measurement of swell degree of the melt jets of the blends. This work was supported by the Russian Foundation for Basic Research (grants no. 13–03–00725 A and 14–03–00538 A).


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Sergei O. Ilyin
    • 1
  • Alexander Y. Malkin
    • 1
  • Valery G. Kulichikhin
    • 1
  • Alexander Yu. Shaulov
    • 2
  • Elena V. Stegno
    • 1
  • Alexander A. Berlin
    • 2
  • Stanislav A. Patlazhan
    • 2
    Email author
  1. 1.Topchiev Institute of Petrochemical SynthesisRussian Academy of SciencesMoscowRussia
  2. 2.Semenov Institute of Chemical PhysicsRussian Academy of SciencesMoscowRussia

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