Chain Transfer in Acrylonitrile Polymerization in Dimethyl Sulfoxide Medium.

The paper deals with the kinetics of acrylonitrile polymerization initiated by azobisisobutyrodinitrile in dimethyl sulfoxide medium. From the experimental data, the constants of the chain transfer due to the solvent used were calculated under different reaction conditions. The average polymerization degree for the given reaction was determined by means of these constants and, finally, the value of the activation energy characteristic of the chain transfer was calculated on the basis of the Arrhenius equation.