Effect of the Molecular Weight of AB Diblock Copolymers on the Lamellar Orientation in Thin Films: Theory and Experiment

Igor I. Potemkin, Peter Busch, Detlef-M Smilgies, Dorthe Posselt, Christine M. Papadakis

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

We propose a theoretical explanation of the parallel and perpendicular lamellar orientations in free surface films of symmetric polystyrene-block-polybutadiene diblock copolymers on silicon substrates (with a native SiOx layer). Two approaches are developed: A correction to the strong segregation theory and a qualitative analysis of the intermediate segregation regime. We show that the perpendicular orientation of the lamellae formed by the molecules of high molecular weight is stabilized by A-B interfacial interactions. They are weaker in the case of the perpendicular orientation of the lamellae, whereas the surface tension coefficient of the A-B interface decreases with the increase of the molecular weight.
OriginalsprogEngelsk
TidsskriftMacromolecular Rapid Communications
Vol/bind28
Udgave nummer5
Sider (fra-til)579-584
Antal sider6
ISSN1022-1336
DOI
StatusUdgivet - 2007

Emneord

    Citer dette

    Potemkin, Igor I. ; Busch, Peter ; Smilgies, Detlef-M ; Posselt, Dorthe ; Papadakis, Christine M. / Effect of the Molecular Weight of AB Diblock Copolymers on the Lamellar Orientation in Thin Films : Theory and Experiment. I: Macromolecular Rapid Communications. 2007 ; Bind 28, Nr. 5. s. 579-584.
    @article{e9ec7860a4a511dc9a76000ea68e967b,
    title = "Effect of the Molecular Weight of AB Diblock Copolymers on the Lamellar Orientation in Thin Films: Theory and Experiment",
    abstract = "We propose a theoretical explanation of the parallel and perpendicular lamellar orientations in free surface films of symmetric polystyrene-block-polybutadiene diblock copolymers on silicon substrates (with a native SiOx layer). Two approaches are developed: A correction to the strong segregation theory and a qualitative analysis of the intermediate segregation regime. We show that the perpendicular orientation of the lamellae formed by the molecules of high molecular weight is stabilized by A-B interfacial interactions. They are weaker in the case of the perpendicular orientation of the lamellae, whereas the surface tension coefficient of the A-B interface decreases with the increase of the molecular weight.",
    keywords = "block copolymers, films, grazing-incidence small-angle X-ray scattering (GISAXS), microstructure, theory",
    author = "Potemkin, {Igor I.} and Peter Busch and Detlef-M Smilgies and Dorthe Posselt and Papadakis, {Christine M.}",
    year = "2007",
    doi = "10.1002/marc.200600764",
    language = "English",
    volume = "28",
    pages = "579--584",
    journal = "Macromolecular Rapid Communications",
    issn = "1022-1336",
    publisher = "Wiley - V C H Verlag GmbH & Co. KGaA",
    number = "5",

    }

    Effect of the Molecular Weight of AB Diblock Copolymers on the Lamellar Orientation in Thin Films : Theory and Experiment. / Potemkin, Igor I.; Busch, Peter; Smilgies, Detlef-M; Posselt, Dorthe; Papadakis, Christine M.

    I: Macromolecular Rapid Communications, Bind 28, Nr. 5, 2007, s. 579-584.

    Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

    TY - JOUR

    T1 - Effect of the Molecular Weight of AB Diblock Copolymers on the Lamellar Orientation in Thin Films

    T2 - Theory and Experiment

    AU - Potemkin, Igor I.

    AU - Busch, Peter

    AU - Smilgies, Detlef-M

    AU - Posselt, Dorthe

    AU - Papadakis, Christine M.

    PY - 2007

    Y1 - 2007

    N2 - We propose a theoretical explanation of the parallel and perpendicular lamellar orientations in free surface films of symmetric polystyrene-block-polybutadiene diblock copolymers on silicon substrates (with a native SiOx layer). Two approaches are developed: A correction to the strong segregation theory and a qualitative analysis of the intermediate segregation regime. We show that the perpendicular orientation of the lamellae formed by the molecules of high molecular weight is stabilized by A-B interfacial interactions. They are weaker in the case of the perpendicular orientation of the lamellae, whereas the surface tension coefficient of the A-B interface decreases with the increase of the molecular weight.

    AB - We propose a theoretical explanation of the parallel and perpendicular lamellar orientations in free surface films of symmetric polystyrene-block-polybutadiene diblock copolymers on silicon substrates (with a native SiOx layer). Two approaches are developed: A correction to the strong segregation theory and a qualitative analysis of the intermediate segregation regime. We show that the perpendicular orientation of the lamellae formed by the molecules of high molecular weight is stabilized by A-B interfacial interactions. They are weaker in the case of the perpendicular orientation of the lamellae, whereas the surface tension coefficient of the A-B interface decreases with the increase of the molecular weight.

    KW - block copolymers

    KW - films

    KW - grazing-incidence small-angle X-ray scattering (GISAXS)

    KW - microstructure

    KW - theory

    U2 - 10.1002/marc.200600764

    DO - 10.1002/marc.200600764

    M3 - Journal article

    VL - 28

    SP - 579

    EP - 584

    JO - Macromolecular Rapid Communications

    JF - Macromolecular Rapid Communications

    SN - 1022-1336

    IS - 5

    ER -