Peculiarities of Changes in Time of Electrical Properties of Polyvinyl Alcohol in Dimethyl Sulfoxide Solutions

Authors

  • O. V. Khorolskyi V.G. Korolenko National Pedagogical University of Poltava
  • O. P. Rudenko V.G. Korolenko National Pedagogical University of Poltava
  • O. M. Zaymack V.G. Korolenko National Pedagogical University of Poltava

DOI:

https://doi.org/10.15407/ujpe62.03.0240

Keywords:

dielectric permittivity, polyvinyl alcohol solutions, dimethyl sulfoxide, thermodynamic equilibrium

Abstract

Long-term changes of the dielectric constant of concentrated (5, 10, and 15 wt.%) solutions of low-molecular polyvinyl alcohol in dimethyl sulfoxide have been studied in a frequency interval of 0.5–200 kHz and at a temperature of 290 ± 1 K. A hypothesis is put forward that the time evolution of dielectric constant is governed by changes in the supramolecular structure of the polymer solution; those changes have a fluctuation nature and are associated with the establishing of equilibrium in the polymer solution. Using the law of corresponding states, a similarity between the kinetics of equilibrium establishment in the polyvinyl alcohol–dimethyl sulfoxide and glycerol–water solutions is demonstrated. With the help of a proposed mathematical model, the characteristic lifetimes and oscillation frequencies of microscopic inhomogeneities in the polyvinyl alcohol solution are determined.

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Published

2018-12-16

How to Cite

Khorolskyi, O. V., Rudenko, O. P., & Zaymack, O. M. (2018). Peculiarities of Changes in Time of Electrical Properties of Polyvinyl Alcohol in Dimethyl Sulfoxide Solutions. Ukrainian Journal of Physics, 62(3), 240. https://doi.org/10.15407/ujpe62.03.0240

Issue

Section

Soft matter

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