Solvent Action of Mixed Solvent Containing Dimethyl Sulfoxide as a Constituent on Acrylonitrile Polymer

Abstract

The solution temperatures of the mixture of dimethyl sulfoxide and the liquids which have solvent action on acrylonitrile polymers lies between those of each components. However, this temperature of the mixture of dimethyl solfoxide and the non-solvent increases proportionally with the content of non-solvent.
There were many cases where the concentrated solutions of acrylonitrile polymers in mixed solvents show lower viscosity than that in dimethyl solfoxide. These mixed solvents had lower solvent action, and the solution showed decreased stability of viscosity on standing and decreased non-Newtonian behavior. As the solvent action of mixed solvent becomes still lower, the viscosity increases again and the non-Newtonian behavior of solution shows remarkable non-Newtonian behavior.