Phase transitions in solutions of copolymers of buthyl- methacrylate and methacrylic acid

The phase diagrams of binary and ternary systems containing copolymer of BMA and methacrylic acid (MA) in dioxane have been drawn. The obtained diagrams are characterized by the upper critical solution temperatures (UCST). Values of critical concentrations decrease with the increasing of the content of MA units. For pseudobinary systems containing PBMA the effect of surface activity of one polymer to another has been obtained.