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Updated: May 15, 2026

Characteristics of Precipitation-formed Polyethylene Glycol Microgels Are Controlled by Molecular Weight of Reactants
Published on: December 23, 2013
Linear rheological properties of low molecular weight polyethylene glycol solutions
Aziz Azri1, Mireille Privat, Yves Grohens
1UMR CNRS 6521, Département de Chimie, Université de Bretagne Occidentale, 6, Avenue Victor Le Gorgeu, CS 93837, 29238 Brest Cedex 3, France.
Abstract:
This experimental study of the linear viscoelastic properties of PEG600 aqueous solutions at various concentrations and temperatures mainly aims at getting a better understanding, in concentrated regimes, of the role played on the structural and rheological properties by PEG assembly properties previously evidenced in the dilute regime. The results indicate a peculiar and unique viscoelastic behavior: the elastic modulus versus frequency curves are nearly the same for all concentrations and temperatures investigated. The key role played by hydrogen bonds in the rheological properties of PEG solutions is highlighted. The relaxation on long time scales is indicative of large scale complex associative polymeric structures. A schematic complete phase diagram of PEG600 in water is finally proposed.
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