Počet záznamů: 1

Behavior of polyelectrolyte solutions in a wide range of solvent dielectric constant

  1. 1.
    0360614 - UMCH-V 2012 RIV GB eng J - Článek v odborném periodiku
    Filippov, Sergey K. - Seery, T. A. P. - Černoch, Peter - Pánek, Jiří - Štěpánek, Petr
    Behavior of polyelectrolyte solutions in a wide range of solvent dielectric constant.
    European Polymer Journal. Roč. 47, č. 7 (2011), s. 1410-1415 ISSN 0014-3057
    Grant CEP: GA MŠk ME09059
    Výzkumný záměr: CEZ:AV0Z40500505
    Klíčová slova: polyelectrolyte * sodium polystyrene sulfonate * NMF (N-methylfomamide)
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 2.739, rok: 2011

    We exploit the strong temperature dependence of dielectric constant of N-methylformamide to control the strength of electrostatic interactions in polyelectrolyte solutions of sodium polystyrene sulfonate, and investigate the dynamic properties of salt-free solutions over a broad temperature range, from 54 to −58 °C. The traditional fast and slow diffusion processes are observed. The ratio of diffusion coefficients, Ds/Df, increases and the ratio of their amplitudes, As/Af, decreases, both by a factor of about two in this temperature range confirming the expected temperature variation with the Bjerrum length.
    Trvalý link: http://hdl.handle.net/11104/0006491