Dielectric scaling in polyelectrolyte solutions with different solvent quality in the dilute concentration regime

F. Bordi, C. Cametti, S. Sennato, S. Zuzzi, S. Dou, Ralph H. Colby

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

In this note, we present a set of radiowave dielectric spectroscopy measurements of two dilute, differently-charged polyelectrolyte solutions, under different solvent conditions. We have found that both the dielectric strength, Δε, and the relaxation time, τion, of the dielectric relaxation process associated with the counterion polarization along a length scale of the order of the correlation length obey the scaling laws with the polyion concentration, according to the Ito model. This is verified with good accuracy independently of the quality of the solvent, which has been varied from poor to good solvent conditions. This finding supports evidence to the fact that, in dilute solutions, the counterion polarization is independent of the polyion concentration, in spite of what occurs at the semi-dilute concentrations.

Original languageEnglish (US)
Pages (from-to)3653-3658
Number of pages6
JournalPhysical Chemistry Chemical Physics
Volume8
Issue number31
DOIs
StatePublished - Aug 10 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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