Small-angle neutron scattering from hexadecyltrimethylammonium bromide micelles in aqueous solutions

Small-angle neutron scattering measurements have been carried out at 50/sup 0/C as a function of external contrast (different ratios of H/sub 2/O to D/sub 2/O) on 0.12 M solutions of hexadecyltrimethylammonium bromide, with the methyls of the ammonium group protiated and deuterated. The results indi...

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Veröffentlicht in:	J. Phys. Chem.; (United States) 1986-10, Vol.90 (22), p.5766-5770
Hauptverfasser:	Berr, Stuart S, Caponetti, E, Johnson, James S, Jones, Richard R. M, Magid, Linda J
Format:	Artikel
Sprache:	eng
Schlagworte:	400201 - Chemical & Physicochemical Properties 400202 - Isotope Effects, Isotope Exchange, & Isotope Separation BARYON REACTIONS Chemistry Colloidal state and disperse state DATA Exact sciences and technology EXPERIMENTAL DATA General and physical chemistry HADRON REACTIONS HEAVY WATER HYDROGEN COMPOUNDS INFORMATION INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY ISOTOPE EFFECTS ISOTOPE ENRICHED MATERIALS MATERIALS MEDIUM TEMPERATURE MICELLAR SYSTEMS Micelles. Thin films NEUTRON REACTIONS NUCLEAR REACTIONS NUCLEON REACTIONS NUMERICAL DATA OXYGEN COMPOUNDS SCATTERING SMALL ANGLE SCATTERING SOLVENT PROPERTIES WATER
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Zusammenfassung:	Small-angle neutron scattering measurements have been carried out at 50/sup 0/C as a function of external contrast (different ratios of H/sub 2/O to D/sub 2/O) on 0.12 M solutions of hexadecyltrimethylammonium bromide, with the methyls of the ammonium group protiated and deuterated. The results indicate that most of the surfactant hydrocarbon is in a micellar core penetrated by little, if any, solvent. The micelles are described adequately by a dispersion of monodisperse prolate ellipsoids. There is a significant effect on the size of the aggregates by the isotopic composition of the solvent.
ISSN:	0022-3654 1541-5740
DOI:	10.1021/j100280a059