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À propos de : Hydrophobic Polyelectrolytes        

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  • Hydrophobic Polyelectrolytes
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  • We present a scaling model of hydrophobic polyelectrolytes. In dilute salt-free solutionsthese polymers have a necklacelike shape with compact beads joined by narrow strings. This necklacelikestructure manifests itself in the unique scaling laws in semidilute regime for the concentration rangewhere the correlation length ξ of a solution is on the order of the string length between two neighboringbeads. In this regime the correlation length ξ decreases with polymer concentration c as ξ ∼ c-1/3, viscosityis concentration independent, and self-diffusion coefficient D increases with concentration D ∼ c1/3 inboth unentangled and entangled solutions. The effects of added salt on the properties of hydrophobicpolyelectrolyte solutions are also discussed.
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