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2015 | OriginalPaper | Buchkapitel

Colloidal Gels Formed by Dilute Aqueous Dispersions of Surfactant and Fatty Alcohol

verfasst von : Felix Grewe, Jochen Ortmeyer, Roxana Haase, Claudia Schmidt

Erschienen in: Colloid Process Engineering

Verlag: Springer International Publishing

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Abstract

Mixtures of surfactants, fatty alcohol as cosurfactant, and water often form gels, even at high dilution. We have investigated highly dilute samples of the system sodium dodecyl sulfate/cetyl alcohol/water (SDS/CA/D₂O) at varying SDS/CA ratio. Gel-like samples are obtained only at low SDS/CA ratios. The phase structure and the dynamics of the molecules have been determined by a combination of proton and carbon-13 NMR spectroscopy, cryo-transmission electron microscopy, very-small-angle neutron and x-ray scattering, differential scanning calorimetry, rheology, and pulsed gradient spin echo NMR diffusometry. The gel-like character is found to be caused by jammed uni- and multilamellar vesicles.

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Titel: Colloidal Gels Formed by Dilute Aqueous Dispersions of Surfactant and Fatty Alcohol
verfasst von: Felix Grewe
Jochen Ortmeyer
Roxana Haase
Claudia Schmidt
Verlag: Springer International Publishing
Buch: Colloid Process Engineering
Print ISBN: 978-3-319-15128-1

Electronic ISBN: 978-3-319-15129-8

Copyright-Jahr: 2015
DOI: https://doi.org/10.1007/978-3-319-15129-8_2

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