Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 430, Issue -, Pages 56-60Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2014.05.006
Keywords
Ionic liquids; Nanostructure; Polymer
Categories
Funding
- Australian Research Council (ARC) Discovery Projects
- ARC
- University of Newcastle
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Steady shear viscosity measurements have been performed on 100 kDa poly(ethylene oxide) (PEO) dissolved in the protic ionic liquids ethylammonium nitrate (EAN) and propylammonium nitrate (PAN) and in water. The zero shear viscosity in all three solvents increases with polymer concentration, falling into three concentration regimes corresponding to dilute, semi-dilute and network solutions. Huggins plots reveal three distinct solvent conditions: good (water), good-theta (EAN) and theta (PAN). However, differences in the transition concentrations, power law behaviour of the viscosities, and relaxation times arising from shear thinning in the two ILs can be directly related to the effects of solvent nanostructure. (C) 2014 Elsevier Inc. All rights reserved.
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