Synthesis and Structural Study of the A–B–A Tri-Block Copolymer Consisting of Poly(γ-benzyl D,L-glutamate) or Poly(γ-methyl D,L-glutamate) as the A Component and Polybutadiene as the B Component

DOI 被引用文献5件 参考文献30件 オープンアクセス
  • Hayashi Toshio
    Research Center for Medical Polymers and Biomaterials, Kyoto University
  • Chen Guan-Wen
    Research Center for Medical Polymers and Biomaterials, Kyoto University
  • Nakajima Akio
    Research Center for Medical Polymers and Biomaterials, Kyoto University

書誌事項

タイトル別名
  • Synthesis and structural study of the A-B-A tri-block copolymer consisting of poly(.GAMMA.-benzyl D,L-glutamate) or poly(.GAMMA.-methyl D,L-glutamate) as the A component and polybutadiene as the B component.

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説明

A series of A–B–A tri-block copolymers consisting of the D,L-isomers of poly(γ-benzyl glutamate) and poly(γ-methyl glutamate) as the A component, and polybutadiene as the B component were synthesized. The helical content of the D,L-copolymers in a helicogenic solvent and in a solid state was estimated on the basis of optical rotatory dispersion and infrared spectra. The content of the right-handed α-helix, the left-handed a-helix, and random coil conformations of the polypeptide chains was estimated. From wide-angle X-ray diffraction measurements, it was shown that the hexagonal crystalline phase almost disappeared for D,L-copolymer membranes, indicating a breakdown of the α-helical conformation in the main chains. The microheterophase structure of these block copolymer membranes was studied with an electron microscope and the D,L-block copolymers membranes were found to take on spherical structures even when the volume fractions of the B portion were rather high.

収録刊行物

  • Polymer Journal

    Polymer Journal 16 (10), 739-749, 1984

    The Society of Polymer Science, Japan

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参考文献 (30)*注記

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詳細情報 詳細情報について

  • CRID
    1390282681264338688
  • NII論文ID
    130004428527
  • DOI
    10.1295/polymj.16.739
  • COI
    1:CAS:528:DyaL2MXps1Smtg%3D%3D
  • ISSN
    13490540
    00323896
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
    • OpenAIRE
  • 抄録ライセンスフラグ
    使用不可

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