Development of Toughening Technology for Styrenic Thermoplastic Elastomers by Incorporating Non-Covalent Interactions

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  • Oda Ryoji
    Zeon Corporation
  • Noro Atsushi
    Department of Molecular & Macromolecular Chemistry, Graduate School of Engineering, Nagoya University Institutes of Innovation for Future Society, Nagoya University
  • Kajita Takato
    Department of Molecular & Macromolecular Chemistry, Graduate School of Engineering, Nagoya University
  • Hashimoto Sadaharu
    Zeon Corporation

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Other Title
  • 非共有結合性相互作用の導入によるスチレン系熱可塑性エラストマーの強靭化技術の開発
  • Award Lecture Article 非共有結合性相互作用の導入によるスチレン系熱可塑性エラストマーの強靭化技術の開発
  • Award Lecture Article ヒキョウユウ ケツゴウセイ ソウゴ サヨウ ノ ドウニュウ ニ ヨル スチレンケイ ネツ カソセイ エラストマー ノ キョウジンカ ギジュツ ノ カイハツ

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<p>We have developed schemes for synthesizing polystyrene-b-polyisoprene-b-polystyrene (SIS) with non-covalent bonding groups via the post-polymerization chemical modification that is an industrially-friendly scheme. SIS was first reacted with maleic anhydride in a diluent, followed by reacting with alkylamine. By neutralizing the carboxy group with a metal alkoxide, ionically-modified SIS (i-SIS) was also prepared. i-SIS with a sodium cation (i-SIS(Na)) or a barium cation (i-SIS(Ba)) exhibited excellent tensile toughness of 480 and 230 MJ m–3 , respectively. Drop weight impact tests also revealed that i-SIS(Ba) exhibited higher impact resistance than that of typical high-strength glass fiber-reinforced plastic. In the future, by achieving optimization of production of i-SIS in an industrial scale, i-SIS can be used for production of lightweight automobiles, resulting in contribution to achieving net-zero carbon and sustainable society.</p>

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