Premium
A review of some recent applications of small‐angle scattering in studies of polydisperse systems and porous materials
Author(s) -
Schmidt Paul W.
Publication year - 1988
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19880150111
Subject(s) - scattering , small angle scattering , fractal dimension , porosity , fractal , materials science , intensity (physics) , porous medium , small angle x ray scattering , optics , mineralogy , physics , chemistry , composite material , mathematics , mathematical analysis
Recent progress in two fields of small‐angle scattering is reviewed: (a) New procedures have been developed by Kotlarchyk and Chen and by Triolo, Griffith, and Compere for calculating the intensity of the small‐angle scattering from polydisperse systems of interacting particles of different sizes. These techniques have significantly increased the quantitative information that can be obtained from the scattering data. (b) The pore boundaries in many porous solids have been found to be fractal surfaces. In a porous solid in which the pores have an average diameter ϵ and the pore boundary surfaces have a fractal dimension D, the scattered intensity for qϵ, >> 1 is proportional to q −(6‐D) , where q = πλ −1 sin(θ/2), θ is the scattering angle, and λ is the wavelength. Some small‐angle scattering studies of fractal porosity are outlined.