Structural defects in polymers—their identification and significance

Abstract

It is well known that vinyl and acrylic polymers prepared by a free radical mechanism contain structural irregularities or defect groups. These defect groups can have a significant effect on the chemical properties of the polymer. Defect groups are, by definition, introduced into a polymer during the initiation and termination steps of the polymerization and also by “abnormal” propagation reactions. Their nature shows a marked dependence on the reaction conditions and, in particular, on such factors as the initiator and solvent employed and the degree of conversion. © 1985 IUPAC