Phase Separated Structure and Its Orientation Behavior of Polystyrene<i>-b-</i>Partially Quaternized Poly(2-Vinylpyridine) Thin Films Investigated by Grazing Incidence Small Angle X-ray Scattering

DOI Web Site Web Site 18 References
  • YAMAMOTO Katsuhiro
    Frontier Research Institute for Materials Science, Nagoya Institute of Technology Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology
  • OKAMOTO Takafumi
    Department of Materials Science & Engineering, Graduate School of Engineering, Nagoya Institute of Technology
  • SAITO Itsuki
    Department of Materials Science & Engineering, Graduate School of Engineering, Nagoya Institute of Technology

Bibliographic Information

Other Title
  • 斜入射小角X線散乱法によるポリスチレン<i>-b-</i>部分四級化ポリ(2-ビニルピリジン)薄膜の相分離構造の配向化挙動の評価
  • 斜入射小角X線散乱法によるポリスチレン-b-部分四級化ポリ(2-ビニルピリジン)薄膜の相分離構造の配向化挙動の評価
  • ナナメニュウシャ ショウカク Xセン サンランホウ ニ ヨル ポリスチレン-b-ブブン ヨンキュウカ ポリ(2-ビニルピリジン)ハクマク ノ ソウ ブンリ コウゾウ ノ ハイコウカ キョドウ ノ ヒョウカ

Search this article

Abstract

<p>Polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP) diblock copolymer used in this study was synthesized by living anionic polymerization. The vinylpyridine units in PS-b-P2VP were partially quaternized by 1-bromobutane and the degree of quaternization was controlled in reaction time. The thin filmsof the quaternized diblock copolymer (PS-b-qP2VP) were prepared by spin-coating onto silicon wafers. Subsequently, the films were thermally annealed in a vacuum for given time. The influence of quaternization degrees on the formation and orientation behavior of the phase separated structure (hexagonally packed cylinders) was investigated by grazing incidence small angle X-ray scattering. For as-cast film, the structure in the thin film was disordered and the highly ordered and oriented phase separated structure appeared after thermal annealing. Annealing time to reach the stable structure depended on degree of quarternization and the thin film with high quaternization required a longer annealing time for rearrangement, which might be caused by the qP2VP anchoring on silicon wafers with specific interaction. The ordered cylindrical micro-domains (qP2VP) in the PS-b-qP2VP thin films was found to align parallel to the substrate, respectively. In case of high quaternization, not only parallel cylinders but also other morphology was mixed, or completely different morphology e.g. hxagonally perforated lamellar structure and spherical morphology might form.</p>

Journal

References(18)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top