A small-angle neutron and static light scattering study of micelles formed in aqueous mixtures of a nonionic alkylglucoside and an anionic surfactant
2005 (English)In: Journal of Physical Chemistry B, ISSN 1520-6106, E-ISSN 1520-5207, Vol. 109, no 25, 12387-12393 p.Article in journal (Refereed) Published
The size and shape of micelles formed in aqueous mixtures of the anionic surfactant sodium dodecyl sulfate (SDS) and the nonionic sugar-based surfactant n-decyl beta-D-glucopyranoside (C(10)G) at different concentrations of added salt have been investigated with small-angle neutron and static light scattering. Rather small prolate ellipsoidal micelles form in the absence of added salt and at [NaCl] = 10 mM in D2O. The micelles grow considerably in length to large rods as the electrolyte concentration is raised to [NaCl] = 0.1 M. In excess of nonionic surfactant ([SDS]/[C(10)G] = 1:3) at [NaCl] = 0.1 M in D2O, several thousands of Angstroms long wormlike micelles are observed. Most interestingly, a conspicuously large isotope solvent effect was observed from static light scattering data according to which micelles formed at [SDS]/[C(10)G] = 1:3 and [NaCl] = 0.1 M in H2O are at least five times smaller than micelles formed in the corresponding samples in D2O.
Place, publisher, year, edition, pages
2005. Vol. 109, no 25, 12387-12393 p.
Deuterium, Electrolytes, Hydrophobicity, Light scattering, Negative ions, Neutron scattering, Phase diagrams, Sodium compounds, Surface active agents, Alkylglucoside, Anionic surfactants, Phase boundaries, Sodium dodecyl sulfate (SDS), Micelles, glucose, ion, surfactant, alkylation, article, chemistry, micelle, neutron, Alkylation, Glucose, Ions, Micelles, Neutrons, Surface-Active Agents
IdentifiersURN: urn:nbn:se:kth:diva-6676DOI: 10.1021/jp051113dISI: 000230122900025ScopusID: 2-s2.0-22744454078OAI: oai:DiVA.org:kth-6676DiVA: diva2:11452
QC 20100901. Tidigare titel: A Small-Angle Neutron Scattering Study of Micelles Formed in Aqueous Mixtures of Nonionic Alkylglucoside and an Anionic Surfactant. Titel ändrad 20100901.2005-09-222005-09-222010-09-01Bibliographically approved