Foam films stabilized by dodecyl maltoside. 1. Film thickness and free energy of film formation

Langmuir : the ACS Journal of Surfaces and Colloids
R M MuruganathanR V Klitzing

Abstract

Foam films stabilized by a sugar-based nonionic surfactant, beta-dodecyl maltoside, are investigated. The film thickness and the film contact angle (which is formed at the transition between the film and the bulk solution) are measured as a function of NaCl concentration, surfactant concentration, and temperature. The film thickness measurements provide information about the balance of the surface forces in the film whereas the contact angle measurements provide information about the specific film interaction free energy. The use of the glass ring cell and the thin film pressure balance methods enables studies under a large variety of conditions. Thick foam films are formed at low electrolyte concentration. The film thickness decreases (respectively the absolute value of the interaction film free energy increases) with the increase of the electrolyte concentration according to the classical DLVO theory. This indicates the existence of a repulsive double layer electrostatic component of the disjoining pressure. An electrostatic double layer potential of 16 mV was calculated from the data. A decrease of the film thickness on increase of the surfactant concentration in the solution is observed. The results are interpreted on the b...Continue Reading

References

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Citations

Apr 25, 2006·Physical Chemistry Chemical Physics : PCCP·Daniel MatuszakMarc D Donohue
Mar 23, 2007·Chemical Communications : Chem Comm·Weifeng BuIzumi Ichinose
May 4, 2013·Physical Chemistry Chemical Physics : PCCP·Muruganathan RamanathanKatsuhiko Ariga
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Aug 28, 2020·Nanomaterials·Giuseppe TartaroGerardo Palazzo
Feb 6, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Silke StöckleRumen Krastev
Feb 15, 2011·ACS Applied Materials & Interfaces·Muruganathan RamanathanRumen Krastev
Dec 1, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Orlando J RojasPer M Claesson
Feb 7, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Cosima StubenrauchDotchi Exerowa
Dec 14, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Rm MuruganathanR Krastev
Apr 4, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Natalie Buchavzov, Cosima Stubenrauch
Sep 6, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·R M MuruganathanH Möhwald

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