Influence of microdomain formation in triblock SIS and ISI copolymers on thermally stimulated depolarization currents

In a triblock copolymer composed of a central linear chain of one species chemically linked at each end to another, depending on the interaction parameter of the unlike monomers and the polymerization index of the sequences, microphase separation is liable to occur, leading to fully periodic structures for sufficiently high molecular weight materials. Lamellar, cylindrical and spherical types of structure are then observed (1). The changes in the termally stimulated depolarization (TSD) diagrams with the extent of segregation will be examined (for details see (2)).