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Rheologica Acta

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01-05-2010 | Original Contribution

Influence of dispersion procedure on rheological properties of aqueous solutions of high molecular weight PEO

Authors: Frédéric Bossard, Nadia El Kissi, Alessandra D’Aprea, Fannie Alloin, Jean-Yves Sanchez, Alain Dufresne

Published in: Rheologica Acta | Issue 5/2010

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Abstract

The linear and nonlinear viscoelastic behaviors of poly(ethylene oxide) (PEO) in aqueous media have been investigated as a function of concentration and molecular weight. A particular interest has been paid to study the effect of turbulent flow under stirring, inducing both shear and elongational stresses, on the rheological behavior of the polymer solutions. The comparison of intrinsic viscosity and viscoelastic properties between shaken and stirred PEO solutions is discussed at the molecular scale in terms of chain scission and aggregation. Results point out that the effect of the mechanical history on the rheological response of PEO solutions depends also on the concentration regime and molecular weight. Indeed, the influence of the dispersion procedure vanishes by decreasing both the concentration and the molecular weight.

previous article On the use of the model proposed by Leonov for the explanation of a secondary plateau of the loss modulus in heterogeneous polymer–filler systems with agglomerates

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Title: Influence of dispersion procedure on rheological properties of aqueous solutions of high molecular weight PEO
Authors: Frédéric Bossard
Nadia El Kissi
Alessandra D’Aprea
Fannie Alloin
Jean-Yves Sanchez
Alain Dufresne
Publication date: 01-05-2010
Publisher: Springer-Verlag
Published in: Rheologica Acta / Issue 5/2010
Print ISSN: 0035-4511
Electronic ISSN: 1435-1528
DOI: https://doi.org/10.1007/s00397-009-0402-8

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