title: Viscosity-change-induced density fingering in polyelectrolytes.
abstract: We have studied the density fingering of an acid-catalyzed autocatalytic reaction in the presence of carboxylate containing polyelectrolyte. The decrease in viscosity as a result of the change in the ionic character of the polymer due to the pH-change during the reaction is the major driving force for the spatiotemporal pattern formation. The front evolution is quantitatively characterized by dispersion curves.
authors.affiliation: Department of Physical Chemistry, University of Szeged, Szeged, Hungary.
authors.forename: Tamás
authors.initials: T
authors.lastname: Rica
authors.forename: Dezsö
authors.initials: D
authors.lastname: Horváth
authors.forename: Agota
authors.initials: A
authors.lastname: Tóth