Viscometric Research of Concentration Regimes for Polyvinyl Alcohol Solutions

  • O. V. Khorolskyi Poltava V.G. Korolenko National Pedagogical University
  • O. P. Rudenko Poltava V.G. Korolenko National Pedagogical University
Keywords: polyvinyl alcohol, viscometry, crossover concentration, solution

Abstract

Experimental researches are carried out for the concentration and temperature dependences of the kinematic viscosity and the density of diluted and semidiluted solutions of polyvinyl alcohols (PVAs) with hydrolysis degrees of 85.2±1.0 mol.% and 98.4±0.4 mol.% in dimethyl sulfoxide and water. Critical concentrations of the transition from the diluted solution to more concentrated regimes are calculated. The results of calculations show that the critical crossover concentrations for PVA solutions in dimethyl sulfoxide are lower than that for PVA aqueous solutions. The obtained temperature dependences of the effective hydrodynamic radii of macromolecules in the diluted PVA solutions testify that this parameter decreases, as the temperature grows.

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Published
2019-01-15
How to Cite
Khorolskyi, O., & Rudenko, O. (2019). Viscometric Research of Concentration Regimes for Polyvinyl Alcohol Solutions. Ukrainian Journal of Physics, 60(9), 880. https://doi.org/10.15407/ujpe60.09.0880
Section
Soft matter