Conditions for the existence of non-centrosymmetric copolymer lamellar systems
Laboratoire CNRS, Elf Atochem (UMR 167) 95, rue Danton, B.P.108, 92303
Levallois-Perret cedex, France
2 Physics Department, Moscow University - Moscow, Russia
Accepted: 25 February 1999
The first non-centrosymmetric lamellar systems 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 terms of the molecular parameters.
PACS: 85.50.+k – Dielectric, ferroelectric, and piezoelectric devices / 61.41.+e – Polymers, elastomers, and plastics
© EDP Sciences, 1999