Abstract
Hydrodynamic interaction is included in the description of ternary polymer solutions (two polymers or a block copolymer mixed with a solvent). The effect of hydrodynamic interaction on the two decay rates (of the so called slow and fast modes) is assessed for dilute and semidilute solutions where Rouse dynamics are not appropriate. The Kubo formula was used to express the generalized mobilities in terms of the Oseen tensor and the static structure factors (convolution integral). The random phase approximation was used to express the interacting system static structure factors. A concentration blob concept allows the incorporation of hydrodynamic interaction inside each blob. Specific cases are discussed.
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