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  • Title: Viscoelastic response of diblock copolymers to oscillatory shear.
    Author: Rüdiger S.
    Journal: Eur Phys J E Soft Matter; 2005 May; 17(1):45-52. PubMed ID: 15864726.
    Abstract:
    A mesoscopic model for diblock copolymers is combined with a simple rheological description of the viscoelastic contrast of its two phases. Under oscillatory shear the contrast generates secondary velocity fields and substantial deviations of volume-averaged flow parameters. The validity of our analytical findings is tested with three-dimensional numerical simulations. Furthermore, we consider the effect of advection by the generated flows on the stability of ordered lamellar states and propose a new criterion for the selection of orientations.
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