Analysis of the heterogeneity in polymeric systems using low-angle x-ray and neutron scattering data

Consideration is given to the possibility of determining the chemical composition of supermolecular formations in block polymeric systems by comparing the squares of the relative contrasts, measured experimentally by means of low-angle X-ray and neutron scattering, with values calculated theoretically. The effectiveness of the method is based on the large difference in the scattering power of density variations in hydrogen-containing media with respect to X-ray and neutron beams. The method is illustrated by a number examples.