THE INFLUENCE OF ALUMINUM SALTS ON THE ST RUCTURE FORMATION IN POLYMER-SOLUTIONS

Polarized luminescence technique was used to study the interaction bet ween the macromolecules of the acrylamide-acrylic acid copolymer and A l3+ ions in aqueous saline solutions. The relaxation times characteriz ing the intramolecular mobility of macromolecules were determined, and the changes in these times on addition of Al3+ ions to the solution o f copolymer were analyzed. To determine the fraction of stable cross-l inks formed by Al3+ ions in the macromolecules of copolymer, a method using a competing copolymer was developed. The fractions of stable cro ss-links in the macromolecules of copolymers of various composition we re determined for various times of the Al3+-copolymer interaction.