Conformational transformations of the macromolecules under the ionizations of polymethacrylic acid in aqueous solutions

摘要

The dependencies of the specific viscosity and conductivity of the aqueous solutions of polymethacrylic acid on ionization degree have been studied. On the basis of the obtained results, it was found that the effective volumes of the macromolecules increase under ionization up to the degree of 0.4 and the actual (effective) degree of ionization agrees with calculated one, at the higher degrees of neutralization-higher then 0.4-the effective volumes of the macromolecules practically do not change and the effective ionization degree is lower then calculated.