Neutron Reflection Studies on Lamellar Microphase-Separated Structures of Two-Component Block Copolymers with Composition Distribution

Naoya Torikai, Atsushi Noro, Masatoshi Okuda, Fumitake Odamaki, Daisuke Kawaguchi, Atsushi Takano, Yushu Matsushita

研究成果: Contribution to journalArticle査読

10 被引用数 (Scopus)

抄録

Segmental distribution of polystyrene blocks in lamellar microphase-separated poly(styrene-block-2-vinylpyridine) (SP) with wide composition distribution was investigated by neutron reflectivity measurements using deuterium-labeled polymers. Block copolymers with wide composition distribution were produced by mixing three monodispersed parent block copolymers, which were synthesized by an anionic polymerization method to have the same total molecular weight but with different volume fractions. The block copolymer blends whose overall S/P ratio is 0.5/0.5 were found to form a uniform lamellar structure, where lamellae were highly oriented along the direction parallel to the film surface and the interfacial thickness was evaluated as 40 Å. It was clarified that a shorter block chain in the microdomain is localized at the domain boundary, while a longer one has a peak at the center of microdomain in its segmental distribution profile.

本文言語英語
ページ(範囲)709-712
ページ数4
ジャーナルPhysica B: Condensed Matter
385-386 I
DOI
出版ステータス出版済み - 11 27 2006
外部発表はい

All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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