The registration of the signal of small angle neutron scattering from a single deuterated chain in a superstructure formed by block copolymers is difficult due to Bragg diffraction. A method is proposed to avoid this diffraction by turning the interdomain neutron contrast to zero. This is attained by means of synthesis of each block of the polystyrene-polybutadiene-polystyrene block copolymer as a statistical copolymer of H and D monomers. The radius of gyration of the deuterated polybutadiene block was measured by neutron scattering.
Посилання на статтю:
Method of variation of contrast in neutron scattering studies of conformations of block copolymers forming a microdomain structure / A. D. Vilesov~, L. V. Vinogradova, N. V. Gazdina, G. A. Evmenenko~,V. N. Zgonnik, V. V. Nesterov and S. Frenkel // Polymer. – 1992. – Vol 33. – P. 2553-2556.