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Journal of Polymer Engineering

Editor-in-Chief: Grizzuti, Nino

IMPACT FACTOR 2018: 1.072

CiteScore 2018: 1.17

SCImago Journal Rank (SJR) 2018: 0.282
Source Normalized Impact per Paper (SNIP) 2018: 0.691

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Volume 31, Issue 5


Thermodynamic study of poly(ethylene glycol) in water/acetone solutions by viscometry

Abbas Mehrdad / Mohammad Taghi Taghizadeh / Roghieh Moladoust
Published Online: 2011-09-05 | DOI: https://doi.org/10.1515/polyeng.2011.089


In this work, the intrinsic viscosities of poly(ethylene glycol) (PEG) with a molar mass of 20,000 g·mol-1 were measured in water/acetone solutions from (283.1 to 313.1) K. The expansion factors of the polymer chains were calculated from the intrinsic viscosity data. The thermodynamic para­meters (entropy of dilution parameter, the heat of dilution para­meter, θ temperature, polymer-solvent interaction parameter and second osmotic virial coefficient) were derived by the temperature dependence of the polymer chain expansion factor. The thermodynamic parameters indicate that mixtures of water/acetone are changed to the poorer solvents for PEG, by increasing temperature and volume fractions of acetone. Also, the temperature dependency of segment-segment and segment-solvent interactions for PEG in mixed water/acetone, is decreased by increasing volume fractions of acetone.

Keywords: expansion factor; intrinsic viscosity; poly(ethylene glycol); poly(ethylene oxide); polymer solution

About the article

Published Online: 2011-09-05

Published in Print: 2011-09-01

Citation Information: Journal of Polymer Engineering, Volume 31, Issue 5, Pages 435–440, ISSN (Online) 2191-0340, ISSN (Print) 0334-6447, DOI: https://doi.org/10.1515/polyeng.2011.089.

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