Abstract
NMR-relaxation methods (T1 and T2) were used to get information on molecular dynamics of polyacrylic and polymethacrylic acids in deuterated aqueous solutions including complex solutions with polyethylene oxide. An analysis of structural transitions (at different temperatures) for polymer components at different ionization degrees of polyacids made it possible to calculate the activation energies and to correlate the confomational changes and aggregation effects with NMR data.