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Transient SANS studies of rodlike micelles on a time scale of 100 ms
Author(s) -
Kalus J.,
Chen S. H.,
Hoffmann H.,
Neubauer G.,
Lindner P.,
Thurn H.
Publication year - 1988
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889888004601
Subject(s) - anisotropy , micelle , rotational diffusion , neutron scattering , small angle neutron scattering , diffusion , shear (geology) , scattering , materials science , chemistry , condensed matter physics , physics , optics , thermodynamics , aqueous solution , composite material
Time‐dependent anisotropic small‐angle neutron scattering (SANS) patterns of rodlike micelles in a shear gradient Γ , suddenly changing its value from zero to a constant value, are presented. The time resolution of the experiment was 100 ms. By an analysis of the steady‐state pattern a rotational diffusion coefficient D of ~ 2 s −1 is deduced. Furthermore it is shown that in a well aligned sample the SANS pattern is sensitive to the rod length distribution in spite of correlation peaks which are caused by repulsive inter‐micellar interaction.