The aim of this work was to investigate the influence of morphology evolution in immiscible blends of Polyisobutene/(Polydimethylsiloxane) on their rheological properties both in steady and transient states under linear and nonlinear flow regimes. The focus was made on the region below the critical shear rate of drops breakup. Such critical shear rate was determined experimentally through a new route using small angle light scattering technique. Interfacial shear stress, first normal stress difference and shear viscosity of the blend were measured in steady shear regime below the critical shear rate and the obtained results were compared to the predictions of the model of Yu et al. [Yu, W., M. Bousmina, M. Grmela, and C. Zhou, “Modeling of oscillatory shear flow of emulsions under small and large deformation field,” J. Rheol. 46, 1401–1418 (2002a) and Yu, W., M. Bousmina, M. Grmela, J. F. Palierne, and C. Zhou, “Quantitative relationship between rheology and morphology in emulsions,” J. Rheol. 46, 1381–1399 (2002b)]. Finally, the influence of the initial morphology on the rheological material functions of the blend was investigated during shear rate sweep-up and shear rate sweep-down tests. The obtained results showed a nice hysteresis that was inferred to morphology development during flow.
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September 2007
Research Article|
September 01 2007
Analysis of morphology development in immiscible Newtonian polymer mixtures during shear flow
Y. Deyrail;
Y. Deyrail
Canada Research Chair on Polymer Physics and Nanomaterials (CREPEC), Department of Chemical Engineering,
Laval University
, Québec, G1K 7P4, Canada
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Z. El Mesri;
Z. El Mesri
Canada Research Chair on Polymer Physics and Nanomaterials (CREPEC), Department of Chemical Engineering,
Laval University
, Québec, G1K 7P4, Canada
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M. Huneault;
M. Huneault
National Research Council Canada,
Industrial Materials Institute
, Boucherville, Québec, J4B 6Y4, Canada
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A. Zeghloul;
A. Zeghloul
Department of Mechanics,
Paul Verlaine University
, 57045 Metz, France
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M. Bousmina
M. Bousmina
a)
Canada Research Chair on Polymer Physics and Nanomaterials (CREPEC), Department of Chemical Engineering,
Laval University
, Québec, G1K 7P4, Canada; and Hassan II Academy of Science and Technology, Av Mohammed Belhassan El Ouazzani, Lot des Ambassadeurs, Souissi-Rabat, Morocco
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a)
Author to whom correspondence should be addressed; electronic mail: [email protected]
J. Rheol. 51, 781–797 (2007)
Article history
Received:
July 20 2006
Citation
Y. Deyrail, Z. El Mesri, M. Huneault, A. Zeghloul, M. Bousmina; Analysis of morphology development in immiscible Newtonian polymer mixtures during shear flow. J. Rheol. 1 September 2007; 51 (5): 781–797. https://doi.org/10.1122/1.2748782
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