Publication
Physical Review Letters
Paper

Neutron reflectivity studies of the surface-induced ordering of diblock copolymer films

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Abstract

Neutron reflectivity from annealed thin films of the poly(styrene-b- deuterated methylmethacrylate), P(S-b-D-MMA), reveals the formation of a multilayered morphology parallel to the film surface. This multilayer forms so that PS locates, preferentially, at the air/copolymer and D-PMMA at the substrate/copolymer interfaces with layer thicknesses at these interfaces one-half that found in the bulk. P(D-S-b-MMA) of lower molecular weight shows the first evidence of surface-induced ordering of copolymers in the phase mixed state characterized by an exponentially damped cosine function. © 1989 The American Physical Society.

Date

17 Apr 1989

Publication

Physical Review Letters

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