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ω-Lithium poly(styrene-b-isoprene) sulfonates were synthesized by anionic polymerization. The copolymers carrying the lithium sulfonate (SuLi) end group at either the soluble or the insoluble block form a variety of different microstructures in n-decane. In the case where the SuLi group is located at the PS insoluble end block, micellar aggregates with larger aggregation number, hydrodynamic radius...
We examine the concentration dependence of the zero-shear viscosity of two chemically distinct classes of spherical brushes, multiarm star polymers and giant diblock copolymer micelles. We show that the effective volume fraction based on the hydrodynamic, rather than the static, size of these objects is the appropriate scaling parameter for obtaining a generic description of the relative viscosity...
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