Europhys. Lett., 46 (4), pp. 549-554 (1999)

Conditions for the existence of non-centrosymmetrie copolymer lamellar systems

1 Laboratoire CNRS, Elf Atochem (UMR 167) 95, rue Danton, B.P.108, 92303 Levallois-Perret cedex, France
2 Physics Department, Moscow University - Moscow, Russia

PACS. 85.50+k - Dielectric, ferroelectric, and piezoelectric devices. PACS. 61.41+e - Polymers, elastomers, and plastics.

Abstract. - The first non-centrosymmetric lamellar systerns were reported recently by Stadler et al. They were obtained from ABC triblock and AC diblock copolymers when they arrange in the sequence "ABCCAABCCA. . . ". We give a tentative theoretical explanation for such a superlattice arrangement and obtain predictions for the phase diagram of such systems in terras of the molecular parameters.