Small-angle X-ray scattering on spinodal, nucleotic or coarsening processes in two-phase systems containing spherical, fibrillar or lamellar inhomogeneities

Abstract

We study the effects of some of the most important and typical structural changes in two-phase systems on selected structural parameters obtained from small-angle x-ray scattering (SAXS) measurements. To limit the present study, it was assumed that the Phase, 1, embedded in the matrix i) is monodispersed and homogeneous, ii) possesses one of the three most extreme shapes (spherical, fibrillar or lamellar) and iii) changes its behaviour a) through type change (spinodal or nucleotic or coarsening), without changing the shape, b) through a change of the shape only, or c) through a) (type change) and b) (shape change) simultaneously.