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  • 1
    Digitale Medien
    Digitale Medien
    Hydration of dodecyltrimethyl- ammonium hydroxide micelles (1997)
    Springer
    Colloid & polymer science 275 (1997), S. 396-399 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Key words Micelles ; hydration ; hydroxide surfactants ; cationic surfactants
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract  The hydration of dodecyltrimethylammonium hydroxide (DTAOH) micelles was determined by viscosity measurements, giving 39.2±7.0 water molecules per micellized dodecyltrimethylammonium ion. This result is lower than the hydration of DTAB micelles, which is about 65. This difference may be due to the effect of the electrorestrictive structure-making hydroxide ion on the hydration of the alkyltrimethylammonium head group, in comparison with the less hydrated structure-breaking bromide ion.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003960050097
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Counterion specificity of the micelle surface and its implications on micellar catalysis (1996)
    Springer
    Colloid & polymer science 274 (1996), S. 662-668 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Micellar catalysis ; critical micelle concentration ; micellization ; counterion distribution constants ; hydroxide surfactants
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract Dodecyltrimethylammonium bromide — Dodecyltrimethyl-ammonium hydroxide — water mixtures were studied with ion-selective electrodes, and the aggregation behavior, degree of ionization of the micelles and the distribution constants of bromide and hydroxide ions between water and micelles were found, showing that some suppositions about the interpretation of micellar catalysis are incorrect, and these interpretations must be revised. The results support the mass action model for the theoretical treatment of micellar catalysis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00653065
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  • 3
    Digitale Medien
    Digitale Medien
    Styrene solubilization in micelles of dodecyltrimethylammonium hydroxide (1997)
    Springer
    Colloid & polymer science 275 (1997), S. 604-607 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Key words Solubilization ; hydroxide surfactants ; styrene ; monomers ; micelles
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract  The solubilization of styrene molecules in aqueous dodeciltrimethylammonium Hydroxide (DTAOH) solution was studied by UV-Vis spectroscopy. In short, fully ionized DTAOH aggregates the styrene molecules in the micelle double layer, oriented with their vinyl group to the micelle core and the aryl ring to the intermicellar solution. At increased surfactant concentration, when the aggregates incorporate counterions in their Stern layer, the orientation is maintained, but styrene molecules gradually penetrate into the micelle core as the micelle size and degree of counterion union increased, until they were completely immersed in the hydrocarbon core of rod-like micelles.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003960050125
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