Intermacromolecular complex formation has been studied between polyethyleneimine and methacrylic acid-methacrylamide copolymer in water-dimethylformamide (DMF) mixtures of different compositions. Preferential solvation coefficients (2/C) have been calculated for the various compositions of the solvent mixtures. At a specific composition of the solvent (e.g. 50% water + 50% DMF by volume), the intrinsic viscosity of the copolymer had a maximum value which coincided with the minimum value of 2/C and the minimum value of the reduced viscosity of the complexes. Interpretations have been sought in terms of conformational change of the copolymer and the interpolymer complex at a specific composition of the solvent mixture.
Посилання на статтю:
Acrylic copolymer-polyelectrolyte interactions' hydrodynamic and electrochemical studies in dimethylformamide-water mixtures / S. K. Chatterjee*, B. V. Farahani, F. H. Rajabi and N. Chatterjee // Polymer. – 1992. – Vol 33. – P. 3308-3311.