title: Nonmonotonic incommensurability effects in lamellar-in-lamellar self-assembled multiblock copolymers.
abstract: Using the self-consistent-field theory numerical procedure we find that the period D of the lamellar-in-lamellar morphology formed in symmetric multiblock copolymer melts A(mN/2)(B(N/2)A(N/2))(n)B(mN/2) at intermediate segregations changes nonmonotonically with an increase in the relative tail length m. Therewith D reveals, as a function of the Flory chi-parameter, a drastic change in the vicinity of the internal structure formation, which can be both a drop and a rise, depending on the value of m. It is argued that the unusual behavior found is a particular case of a rather general effect of the incommensurability between the two length scales that characterize the system under consideration.
authors.affiliation: Institute for Mathematical Modeling, RAS, Moscow 125047, Russia.
authors.forename: Yury A
authors.initials: YA
authors.lastname: Kriksin
authors.forename: Igor Ya
authors.initials: IY
authors.lastname: Erukhimovich
authors.forename: Yuliya G
authors.initials: YG
authors.lastname: Smirnova
authors.forename: Pavel G
authors.initials: PG
authors.lastname: Khalatur
authors.forename: Gerrit
authors.initials: G
authors.lastname: Ten Brinke