Neutron scattering analysis of a block copolymer poly(l,4-phenylene)-block-polystyrene-block-poly( l,4-phenylene)

Poly(1,4-phenylene)-block-polystyrene-block-poly(1,4-phenylene) (PPP-b-PS-b-PPP) blocks copolymers were synthesized by chemical modification of a precursor copolymer. After characterization by Size Exclusion Chromatography (S.E.C) and UV-Visible spectroscopy, triblock copolymers were studied in CS2 solution at room temperature by neutron-scattering analysis. These triblock copolymers are highly aggregated. A ribbon model seems to give the best fit for the PPP core.