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Preparation, Characterization of Cyclic Block Copolymers and Their Bulk Structures

Research Project

Project/Area Number 12450383
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 高分子構造・物性(含繊維)
Research InstitutionNagoya University

Principal Investigator

MATSUSHITA Yushu  Nagoya University Graduate School of Engineering, Department of Applied Chemistry, Professor, 工学研究科, 教授 (60157302)

Co-Investigator(Kenkyū-buntansha) TORIKAI Naoya  High Energy Accelerator Research Organization, Neutron Science Laboratory, Research Associate, 物質構造科学研究所, 助手 (70300671)
TAKANO Atsushi  Nagoya University Graduate School of Engineering, Department of Applied Chemistry, Lecturer, 工学研究科, 講師 (00236241)
OHTANI Hajime  Nagoya University Graduate School of Engineering, Department of Applied Chemistry, Associate Professor, 工学研究科, 助教授 (50176921)
TAKAHASHI Yoshiaki  Kyushu University Interdisciplinary Graduate School of Engineering Sciences, Associate Professor, 理工科学研究院, 助教授 (40188066)
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥14,800,000 (Direct Cost: ¥14,800,000)
Fiscal Year 2002: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 2001: ¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 2000: ¥8,500,000 (Direct Cost: ¥8,500,000)
KeywordsCyclic Polymer / Block Copolymer / Morphology / Conformation / Anionic Polymerization / Ozonolysis
Research Abstract

Three polystyrene-block-polyisoprene-block-polystyrenes with different compositions were prepared and cyclized by the coupling reaction between two end groups on the same molecules. Ring-shaped polystyrene-block-polyisoprenes were isolated from the coupling products by GPC fractionation. They were ozonized so as to decompose the polylyisoprene blocks selectively referring to the linear molecule. From GPC analysis of the decomposed products obtained by ozonolysis, it was quantitatively confirmed that the fractionated products include c.a. 90% ring molecules. It has been found that the morphological transition of the ring-shaped block copolymers takes place depending on composition in essentially the same manner as that of the linear triblock copolymers, whereas the domain spacings of SI ring-shaped block copolymers were all smaller than those of the corresponding SIS linear triblock copolymers, which is attributed to looped chain conformation.

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] A.Takano et al.: "Prepalation and Characterization of Cyclic Polystyrene with Short Poly (2-tert-butyl-butadiene) sequence"J. Polym. Sci., Polym. Phys. Ed.. 40. 1582-1589 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] A.Takano et al.: "Preparation and Morphology of Ring-shaped Polystyrene-block-polyisoprenes"Macromolecules. (印刷中). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] A.Takano, A.Nonaka, O.Kadoi, K.Hirahara, S.Kawahara, Y.Isono, N.Torikai, Y.Matsushita: "Preparation and Characterization of Cyclic Polystyrene with Short Poly(2-tert-butyl-butadiene)sequence"J.Polym.Sci.,Polym.Phys.Ed.. 40. 1582-1589 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] A.Takano, O.Kadoi, K.Hirahara, S.Kawahara, Y.Isono, J.Suzuki, Y.Matsushita: "Preparation and Morphology of Ring-shaped Polystyrene-block-polyisoprenes"Macromolecules. 36. 3045-3050 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] A.Takano et al.: "Preparation and Characterization of Cyclic Polystyrene with Short Poly (2-tert-butyl-butadiene) sequence"J. Polym. Sci., Polym. Phys. Ed.. 40. 1582-1589 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] A.Takano et al.: "Preparation and Morphology of Ring-Shaped Polystyrene-block-polyisoprenes"Macromolecules. (印刷中). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] J. Suzuki et al.: "The Tricontinuous Double-Gyroid Structure from a Three-Component Polymers System"J. Chem. Phys.. 112. 4862-4868 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y. Matsushita et al.: "Studies on Equilibrium Structures of Complex Polymers in Condensed Systems"J. Polym. Sci., Part B, Polym. Phys. Ed.. 38. 1645-1655 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] N. Torikai et al.: "Comparison between Interfacial Structures of a Block Copolymer and Two-Component Homopolymers by Neutron Reflectivity Measurement"J. Phys. Sci. Jpn. Suppl. A. 70. 344-346 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 岩田紘明,高野敦志,松下裕秀: "環状ブロック共重合体の合成と凝集構造"高分子学会予稿集. 50. (2001)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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