Аннотация
Hydrodynamic properties of new ethynylpiperidol-based polyelectrolytes and polyampholytes were studied. Such conformational characteristics as constants of Mark-KuhnHouwink equations, unperturbed sizes, and the degree of polymer chain coiling were determined. The effect of ionic strength of solution, organic compound additions, and anion nature on molecular parameters of cationic polyelectrolytes was studied. Hydrodynamic properties of polymeric ampholytes near an isoelectric point were studied as a function of various factors. Polyampholyte macromolecules were shown to assume a compact conformation at the isoelectric point irrespective of the polymer chain length. Polyampholyte molecules unfolded at the isoelectric point with an increase of the ionic strength of the solution, which agreed with the assumption made previously.