J. Phys. IV France 03 (1993) C8-53-C8-58
Chain conformation of polybutadiene blocks in lamellar bidispersed microdomains as revealed by small-angle neutron scatteringG.A. EVMENENKO1, V.L. ALEXEEV1 and A.D. VILESOV2
1 Petersburg Nuclear Physics Institute, Academy of Sciences of Russia, Gatchina, St. Petersburg dist. 188350, Russia
2 Institute of Macromolecular Compounds, Academy of Sciences of Russia, St. Petersburg 199004, Bolshoi 31, Russia
Polgbutadiene-polystyrene diblock copolymer lamellar supercrystals developed by binary mixture of PS-PB block copolymers with different molecular weights have been studied by SANS on the diffractometer "Membrana-2". The dependence of the lattice spacing and the radii of gyration of PB chains on the molecular-weight parameters of a domain have been studied. It turned out that the conformation of PB chains is dependent on the concentration of surrounding short chains.
© EDP Sciences 1993