About: Polyelectrolyte behaviour in solvents with widely variable dielectric constant     Goto   Sponge   NotDistinct   Permalink

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  • We propose a joint effort to study polyelectrolytes as a function of dielectric constant using the temperature dependent properties of amide type solvents. This type of solvents has a dielectric constant similar or larger than that of water that furthermore is strongly temperature dependent. The joint effort will combine expertise from the Stepanek group from the Institute of Macromolecular Chemistry (IMC) at Prague in the Czech Republic and from the Seery Research group in the Polymer Program at the University of Connecticut (UC). The outcomes of this work will be twofold: we will increase our understanding of the properties of polyelectrolytes in solution at a fundamental level and we will extend the technique of dynamic light scattering to take advantage of the increased processing power available in modern computers. The object of this collaborative effort is to explore the dependencies of polyelectrolyte properties in solution on molecular weight, polymer concentration and concentration and (en)
  • Získání informací o interakcích mezi polyelektrolyty a organickými rozpouštědly a o asociačním chování polyelektrolytů v závislosti na změnách dielektrické konstanty rozpouštědla v oboru několikanásobně větším, nežli u dřívějších studií ve vodě.
Title
  • Polyelectrolyte behaviour in solvents with widely variable dielectric constant (en)
  • Vlastnosti polyelektrolytů v roztocích s široce proměnnou dielektrickou konstantou
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  • ME09059
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  • polyelectrolyte; dielectric constant; dynamic light scattering; small-angle neutron scattering; morphology of solutions; self-organization of polymers (en)
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  • Během řešení projektu jsme získali nové a originální výsledky spočívající ve stanovení teplotní závislosti difuzního koeficientu kooperativního a doménového módu u vzorků polyelektrolytů v organických rozpouštědlech, popisu self-difuze polyelektrolytového roztoku, popisu vlivu velikosti protiontu na dynamiku polyelektrolytových řetězců a popisu chování koncentrovaných roztoků. (cs)
  • We have obtained new and original results related to temperature dependence of the cooperative and domain diffusive mode in polyelectrolyte solutions in organic solvents, to self-diffusion in poyelectrolytes, to effect of counterion size on polyelectrolyte dynamics and to properties of concentrated solutions. (en)
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  • polyelectrolyte
  • dielectric constant
  • dynamic light scattering
  • morphology of solutions
  • small-angle neutron scattering
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