Interactions between nonpolar surfaces coated with the nonionic surfactant n-dodecyl-beta-D-maltoside
2005 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 21, no 25, 11836-11843 p.Article in journal (Refereed) Published
The forces acting between nonpolar surfaces coated with the nonionic surfactant n-dodecyl-beta-D-maltoside (beta-C(12)G(2)) were investigated at concentrations below and above the critical micelle concentration. The long-range and adhesive forces were measured with a bimorph surface force apparatus (MASIF), It was found that the effect of hydrodynamic interactions had to be taken into account for an accurate determination of the short-range static interactions. The results were compared with disjoining pressure versus thickness curves that were obtained earlier with a thin film pressure balance (TFPB). This comparison led to the conclusion that the charges observed at the air-water interface are not due to charged species present in the surfactant sample. In addition, it was observed that the stability of thin liquid films crucially depends on the surfactant's bulk concentration
Place, publisher, year, edition, pages
2005. Vol. 21, no 25, 11836-11843 p.
poly(ethylene oxide) surfactants, liquid-expanded range, foam films, sugar surfactant, decyl-maltopyranoside, hydrophobic surfaces, alkyl polyglucosides, disjoining pressure, force measurements, phase-changes
IdentifiersURN: urn:nbn:se:kth:diva-15231DOI: 10.1021/la051938eISI: 000233730200046ScopusID: 2-s2.0-29444438620OAI: oai:DiVA.org:kth-15231DiVA: diva2:333272
QC 201005252010-08-052010-08-05Bibliographically approved