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Rheologica Acta

Erschienen in:

01.07.2003

A rheological model with constant approximate volume for immiscible blends of ellipsoidal droplets

verfasst von: Brian J. Edwards, Marco Dressler

Erschienen in: Rheologica Acta | Ausgabe 4/2003

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Abstract

We develop a set of evolution equations describing the effects of a general deformation field on the shape, size, and orientation of constant-volume droplets suspended in a Newtonian fluid. The rheological characteristic functions of this incompressible and immiscible polymer blend model are also derived in tandem with the abovementioned set. The constant-volume constraint is implemented using a recent methodology (Edwards BJ, Dressler M, Grmela M, Ait-Kadi A (2002) Rheological models with microstructural constraints. Rheo Acta (in press)) and discussed relative to the similarly volume-constrained model of Almusallam et al. (Almusallam AS, Larson RG, Solomon MJ (2000) A constitutive model for the prediction of ellipsoidal droplet shapes and stresses in immiscible blends. J Rheol 44:1055–1083). Sample results are reported for step-strain and shear relaxation profiles.

Vorheriger Artikel Rheology of carbon black suspensions. II. Well dispersed system

Nächster Artikel The effect of pre-thermal history on shear and uniaxial elongational viscosity of a tetrafluoroethylene/hexafluoropropylene copolymer near the crystal melting transition

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Titel: A rheological model with constant approximate volume for immiscible blends of ellipsoidal droplets
verfasst von: Brian J. Edwards
Marco Dressler
Publikationsdatum: 01.07.2003
Verlag: Springer-Verlag
Erschienen in: Rheologica Acta / Ausgabe 4/2003
Print ISSN: 0035-4511
Elektronische ISSN: 1435-1528
DOI: https://doi.org/10.1007/s00397-002-0288-1

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