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Small‐angle scattering from colloidal dispersions
Author(s) -
Kaler E. W.
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/s0021889888005230
Subject(s) - scattering , small angle scattering , colloid , dispersity , biological small angle scattering , decoupling (probability) , light scattering , statistical physics , materials science , colloidal particle , anisotropy , range (aeronautics) , physics , optics , chemical physics , molecular physics , chemistry , small angle neutron scattering , neutron scattering , polymer chemistry , control engineering , composite material , engineering
Colloidal dispersions have structure on length scales from 10 to 1000 Å. Both inter‐ and intraparticle scattering contribute to the measured small‐angle scattering spectra. Here are reviewed methods of quantitatively analyzing scattering from interacting polydisperse colloidal suspensions. The concept of a colloidal macrofluid enables the use of statistical thermodynamic theories to calculate the important effects of interparticle interactions on the scattering curves. Neglect of interparticle interactions negates the usefulness of measured distance distribution functions. Polydispersity and particle anisotropies are treated in an approximate way with decoupling approximations. Scattering data must be obtained over a wide range of q , and model fits must be consistent with all the data.