PARTICLE-SIZE ANALYSIS OF LATEXES BY CLASSICAL AND SMALL-ANGLE SPECTRODISSYMMETRY

The spectral dependence of classical and small-angle dissymmetry Z in polydispersions containing spherical particles with lognormal distribution was theoretically studied. It has been found, for instance, for polystyrene latex that small-angle dissymmetry may be used for determining the distribution parameters in systems with particle medial radius 60-700 nm on the basis of measurements of Z(10-degrees/5-degrees) at two wavelengths of radiation. For particles outside this interval and by use of working relationships of classical dissymmetry only the application of a wide range of wavelengths comes into consideration by distribution analysis.