Control of Mechanical Properties via Morphological Control through Blending of Elastomeric Polystyrene-block-polybutadiene-block-polystyrene Triblock Copolymers

DOI NDLデジタルコレクション 参考文献13件
  • SAKURAI Shinichi
    Department of Polymer Science & Engineering, Kyoto Institute of Technology
  • ISOBE Daisuke
    Department of Polymer Science & Engineering, Kyoto Institute of Technology
  • OKAMOTO Shigeru
    Department of Material Science and Engineering, Nagoya Institute of Technology
  • NOMURA Shunji
    Department of Polymer Science & Engineering, Kyoto Institute of Technology

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タイトル別名
  • Control of Mechanical Properties via Morphological Control through Blending of Elastomeric Polystyrene-<i>block</i>-polybutadiene-<i>block</i>-polystyrene Triblock Copolymers

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We report control of mechanical properties via morphological control through blending of elastomeric polystyrene-block-polybutadiene-block-polystyrene (SBS) triblock copolymers. For this purpose, we controlled overall composition by blending two SBS triblock copolymers having different compositions and surveyed variation of the mechanical properties with structural change. The microdomain structure was analyzed by the small-angle X-ray scattering (SAXS) technique and the mechanical properties were examined by the tensile stress-strain test. The blending enabled us to change morphology from polystyrene cylinders to alternating lamellae. In between them, a double-gyroid (DG) microdomain structure was also formed. The DG structure is a well-ordered bicontinuous structure, which is formed in a narrow range of composition between cylinder and lamella regions. As a result, the tensile modulus increased tremendously in the narrow range of composition where the DG structure was formed.

収録刊行物

  • 材料

    材料 50 (12Appendix), 225-228, 2001

    公益社団法人 日本材料学会

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