Dresden 2011 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 7: Interfaces and Thin Films II
CPP 7.13: Vortrag
Montag, 14. März 2011, 17:15–17:30, ZEU 114
Effect of oppositely charged hydrophobic additives (alkanoates) on the stability of C14TAB foam films — •Natascha Schelero1, Reinhard Miller2, and Regine von Klitzing1 — 1Stranski-Laboratorium, Department of Chemistry, TU Berlin, Strasse des 17. Juni 124, 10623 Berlin — 2Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam
Liquid foams are frequently applied in daily life and industrial processes (e.g. cleaning agents, personal care products and fire-fightening). In most of the applications mixtures of several components are used. Model systems for such applications are thin liquid films. Within this work the impact of the hydrophobicity of oppositely charged additives on the stability of C14TAB foam films are investigated. Furthermore, the surface properties of the mixed systems are described to gain a general understanding about the surface characteristics. Since C14TAB and alkanoates are oppositely charged, the question arises whether charge reversal at the film surfaces occurs and how it depends on the chain length of the alkanoate.