caa a22 4500 445328525 CHVBK 20180317142729.0 cr unu---uuuuu 170323e20110501xx s 000 0 eng 10.1007/s10953-011-9683-5 doi (NATIONALLICENCE)springer-10.1007/s10953-011-9683-5 Thermodynamic Study of Poly(ethylene glycol) in Water/1-Propanol Solutions by Viscometry [Elektronische Daten] [Abbas Mehrdad, Mohammad Taghizadeh, Roghieh Moladoust] In this work, the intrinsic viscosities of poly(ethylene glycol) with a molar mass of 20 kg⋅mol−1 were measured in water/1-propanol 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, theta temperature, polymer-solvent interaction parameter and second osmotic virial coefficient were derived from the temperature dependence of the polymer chain expansion factor. The thermodynamic parameters indicate that mixtures of water/1-propanol become weaker solvents for poly(ethylene glycol) with increasing temperature. Also, the thermodynamic parameters indicate that the solvent ability of mixed water/1-propanol for poly(ethylene glycol) is less than that of pure water. Springer Science+Business Media, LLC, 2011 Polymer solution nationallicence Poly(ethylene glycol) nationallicence Poly(ethylene oxide) nationallicence Intrinsic viscosity nationallicence Expansion factor nationallicence Mehrdad Abbas Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran aut Taghizadeh Mohammad Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran aut Moladoust Roghieh Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran aut Journal of Solution Chemistry Springer US; http://www.springer-ny.com 40/5(2011-05-01), 832-842 0095-9782 40:5<832 2011 40 10953 https://doi.org/10.1007/s10953-011-9683-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10953-011-9683-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mehrdad Abbas Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran aut NATIONALLICENCE 700 1- Taghizadeh Mohammad Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran aut NATIONALLICENCE 700 1- Moladoust Roghieh Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran aut NATIONALLICENCE 773 0- Journal of Solution Chemistry Springer US; http://www.springer-ny.com 40/5(2011-05-01), 832-842 0095-9782 40:5<832 2011 40 10953 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 379742136 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer