Interpretation of Scattering by Inhomogeneous Particles
The approaches to the interpretation of the small-angle scattering curve considered in the previous chapter (namely, calculation of the invariants and modeling) can be applied, as a rule, only within the framework of a homogeneous approximation. However, they give no information on inhomogeneities which inevitably exist in any real particle and may be associated with its structure as well as solvent penetration. It therefore follows that new methods of interpretation are necessary in order to move forward from analyzing the general parameters to an investigation of the inner structure of particles. The most effective method is to study the change in the particle’s (or in its individual segment’s) scattering capacity with respect to a solvent, followed by analysis of the corresponding variations in the scattering curves.
KeywordsCross Term Relative Arrangement Contrast Variation Solvent Density Partial Specific Volume
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