Stress Relaxation of Multi-Arm Star Polystyrenes in the Molten State
スポンサーリンク
概要
- 論文の詳細を見る
Stress relaxation of multi-arm star polystyrenes were investigated in the molten state. The relaxation modulus was measured over a wide range of strain. The plots of relaxation modulus against time for the multi-arm stars showed a new mechanical relaxation at long times. For entangled systems, although the strain dependence of the damping function for entanglement relaxation was almost identical to that for linear and regular star polymers, the strain dependence for the long-time relaxation was weak. On the other hand, the damping function for the non-entangled systems showed the stronger dependence than the entangled systems. The damping at large strains became weaker with increasing weight-average molecular weight of the arm but appeared to be independent of number of arms.
- 日本レオロジー学会の論文
著者
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YAMAMOTO Takashi
Department of Cardiovascular and Respiratory Medicine, Shiga University of Medical Science
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Yamamoto Takashi
Department Of Cardiovascular And Respiratory Medicine Shiga University Of Medical Science
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Ohta Yasuhiko
Department of General and Cardiothoracic Surgery, Graduate School of Medicine, Kanazawa University
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瀧川 敏算
京都大学大学院工学研究科材料化学専攻
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TAKIGAWA Toshikazu
Department of Material Chemistry, Kyoto University
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MASUDA Toshiro
Department of Material Chemistry, Kyoto University
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Masuda Toshiro
Department Of Gastroenterological Surgery Graduate School Of Medical Sciences Kumamoto University
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Takigawa Toshikazu
Department Of Material Chemistry Kyoto University
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Takigawa T
Kyoto Univ. Kyoto Jpn
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Ohta Yasuhiko
Department Of General And Cardiothoracic Surgery Kanazawa University School Of Medicine
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Ohta Yasuhiko
Department O Fbiology School Of General Education Tottori University
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