Abstract
The effect of polymer concentrations, pH, nature and molecular weight of polyacid and nature of solvent on the complex formation of poly(carboxylic acids) with poly(vinyl ether) of ethylene glycol has been studied. The role of hydrophobic interactions and ionization of polyacid in the stabilization of interpolymer complexes in aqueous solutions has been clarified. It has been shown that an increase of polymer concentrations and the hydrophobicity of polyacid shifts the critical pH values to the higher region. The competition between polymer–solvent and polymer–polymer interactions governs the complex formation processes.
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