Small-angle neutron scattering from H/sub 2/O/D/sub 2/O solutions of a sodium alkylbenzenesulfonate having a branched alkyl group
Small-angle neutron scattering results from 0.055 M sodium p(1-pentylheptyl)benzenesulfonate solutions in D/sub 2/O--H/sub 2/O solutions of 57% to 100% volume percent D/sub 2/O are reported. Strong interaction peaks indicate interparticle ordering. Good fits to the results can be obtained taking account of hard-sphere and electrostatic repulsion with the mean spherical approximation. The model used is a spherical micelle, comprising a hydrocarbon core of 11.9 A radius surrounded by a shell. The thickness of the shell derived from the results is 8.9 A, implying a rough micellar surface. The measured geometry and change are essentially independent of the contrast between the micelles and the solvent.
- Research Organization:
- Istituto di Chimica Fisica, V. Archirafi 26, Palermo, Italy
- OSTI ID:
- 5944370
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 79:4; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKALI METAL COMPOUNDS
AQUEOUS SOLUTIONS
COHERENT SCATTERING
DIFFRACTION
DISPERSIONS
HEAVY WATER
HYDROGEN COMPOUNDS
MICELLAR SYSTEMS
MIXTURES
NEUTRON DIFFRACTION
OXYGEN COMPOUNDS
SCATTERING
SMALL ANGLE SCATTERING
SODIUM COMPOUNDS
SOLUTIONS
SURFACTANTS
WATER