title: Surface adsorption of sulfonated poly(phenylene sulfone)/C14TAB mixtures and its correlation with foam film stability.
abstract: Polyelectrolyte/surfactant mixtures of rigid monosulfonated poly(phenylene sulfone) (sPSO2-220) and tetradecyl trimethylammonium bromide (C14TAB) were investigated by surface tension, surface elasticity and foam film stability measurements. The results were compared to former measurements of polyelectrolyte/surfactant mixtures containing more flexible polyelectrolytes (PAMPS or PSS and C14TAB). For all polyelectrolyte/surfactant mixtures an increased surface adsorption in comparison to the pure surfactant was detected. Moreover, sPSO2-220/C14TAB mixtures showed a much higher surface activity and foam film stability than mixtures with more flexible polyelectrolytes. The results presented give insight into the surface adsorption and foam film formation of rigid polyelectrolyte/surfactant mixtures. Therefore, this study helps to understand the role of polyelectrolyte backbone rigidity in the formation and stabilization of foam films made from polyelectrolyte/surfactant mixtures.
authors.affiliation: Stranski-Laboratorium, Department of Chemistry, Technische Universität Berlin, Strasse des 17.Juni 124, D-10623 Berlin, Germany. klitzing@mailbox.tu-berlin.de.
authors.forename: Martin
authors.initials: M
authors.lastname: Uhlig
authors.forename: Reinhard
authors.initials: R
authors.lastname: Miller
authors.forename: Regine von
authors.initials: Rv
authors.lastname: Klitzing