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  • Small-angle x-ray scattering functions of rodlike polyelectrolytes in aqueous solutions : theoretical study
    Urbič, Tomaž ...
    A theoretical study of small angle X-ray scattering on model rodlike polyelectrolytes containing a mixture of univalent ▫$(LI^+)$▫ and divalent (Sr^{2+}) counterions is presented. Scattering ... functions, based on the electron density contrast relative to solvent, were computed. The distribution of the excess electron density around the polyion was determined by numerical solving of the Poisson-Boltzmann (PB) equation within the cell model. For the systems countaining only one kind of conterions analytical solutions of the PB equation were also used. Such a model can be applied to rigid polymeric entities with rodlike shape, the entities being cither individual polymers of small constituents of otherwise flexible polymers. We studied the influence of both the polyion and its ionic atmosphere on the scattering function is significant while the contribution of the ionic atmosphere increases with increasing the fraction of stronium ions with a higher contrast in electron density against the solvent.
    Vir: Acta chimica slovenica. - ISSN 1318-0207 (Vol. 48, [no.] 3, sep. 2001, str. 343-352)
    Vrsta gradiva - članek, sestavni del
    Leto - 2001
    Jezik - angleški
    COBISS.SI-ID - 23770885

    Povezava(-e):

    Digitalna knjižnica Slovenije - dLib.si

vir: Acta chimica slovenica. - ISSN 1318-0207 (Vol. 48, [no.] 3, sep. 2001, str. 343-352)

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