Numéro
J. Phys. IV France
Volume 03, Numéro C8, Décembre 1993
IX International Conference on Small Angle Scattering
Page(s) C8-53 - C8-58
DOI http://dx.doi.org/10.1051/jp4:1993811
IX International Conference on Small Angle Scattering

J. Phys. IV France 03 (1993) C8-53-C8-58

DOI: 10.1051/jp4:1993811

Chain conformation of polybutadiene blocks in lamellar bidispersed microdomains as revealed by small-angle neutron scattering

G.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


Abstract
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.



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