Features of the structure and properties of polyurethanes with macroheterocyclic fragments

The structure and properties of polyurethanes based on (mono)dibenzo-18-cro wn-6 and diamino-dibenzo-16-crown-6 sulfonyl hydrazides was studied by IR s pectroscopy, small-angle X-ray scattering, physicomechanical methods, and b iological activity testing. The polymers are microheterogeneous systems wit h the degree of microphase separation determined by compatibility of the ri gid and flexible chain fragments. Most of the compounds studied exhibit hig h biological activity, which is explained, among other important factors, b y the electrostatic interaction between the macrocavity of a crown eater an d the bioreceptor.