Journal of Solution Chemistry

, Volume 46, Issue 7, pp 1404–1417 | Cite as

Polyvinylpyrrolidone Behavior in Water/Ethanol Mixed Solvents: Comparison of Modeling Predictions with Experimental Results

  • Moez GuettariEmail author
  • Amal Belaidi
  • Stéphane Abel
  • Tahar Tajouri


The objective of this work is to study the behavior of a neutral polymer, polyvinylpyrrolidone (PVP), in a mixture of water and ethanol. A comparison of the experimental results with a theoretical model of effective solvent interaction with polymer (ESIP) was made. To do so, dynamic light scattering experiments were used to measure the hydrodynamic radius of PVP (M w = 3.6 × 105 g·mol−1) as a function of the ethanol fraction, x A, in the medium at 25 °C. We show that the polymer adopts an ideal chain–globule–coil conformation transition as the ethanol molar fraction varies. This transition is attributed to the change of the solvent quality which results from water and ethanol complex formation. On the other hand, the ternary PVP/water/ethanol system was described by the ESIP model. From the polymer–effective solvent interaction, the second virial coefficient of the polymer/effective solvent and the preferential adsorption parameter were calculated. The obtained results are in agreement with the reported experiments.


Polymer Mixed solvents Dynamic light scattering Effective solvent Model 



The authors gratefully acknowledge financial support from the Tunisian Ministry of Education, Research and Technology.


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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  • Moez Guettari
    • 1
    • 4
    Email author
  • Amal Belaidi
    • 1
    • 2
  • Stéphane Abel
    • 3
  • Tahar Tajouri
    • 1
  1. 1.NMR in Polymers and Composites LaboratoryUniversity of TunisTunisTunisia
  2. 2.Faculty of Science of BizerteUniversity of CarthageCarthageTunisia
  3. 3.Institut de Biologie Intégrative de la Cellule (I2BC), Institut Frédéric Joliot, CEA, CNRS, Univ Paris-SudUniversité Paris-SaclayGif-Sur-Yvette CedexFrance
  4. 4.Laboratory of Soft Matter and Electromagnetic ModelingUniversity of Tunis El ManarTunisTunisia

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