Abstract
The processes of complexation of diphilic macromolecules with high molecular acids in recent years have moved into a separate and rapidly developing direction of the chemistry of polymers. Of particular interest are complexes based on nonionic thermosensitive copolymers and polycarboxylic acids, which acquire properties significantly different from those of the original components. In this regard, studies related to the establishment of complex-forming and surface-active behavior of non-ionic polymers with thermoregulated characteristics, acquires a particular urgency, both scientifically and in practice.