Small-angle X-ray scattering study of the pulley effect of slide-ring gels

Yuya Shinohara, Kentaro Kayashima, Yasushi Okumura, Changming Zhao, Kohzo Ito, Yoshiyuki Amemiya

研究成果: Contribution to journalArticle査読

88 被引用数 (Scopus)

抄録

The structure of slide-ring (SR) gels in various types of solvents was investigated by small-angle X-ray scattering (SAXS). The SR gels have a unique characteristic called the "pulley effect" that the cross-links made of a-cyclodextrin molecules in a figure-eight shape can slide along the polymer chain. The SAXS results show that, in a poor solvent, the sliding cross-links form aggregates that prevent the pulley effect, while the polymer chains freely pass through the cross-links acting like pulleys in a good solvent. A vertically elliptic pattern was observed in two-dimensional SAXS profiles for covalent-bonded chemical gels in a good solvent under uniaxial horizontal deformation, while an isotropic profile was observed for the SR gels in a good solvent even under deformation. This difference in the deformation mechanism between the SR gels and the chemical gels supports the pulley effect of the SR gels.

本文言語英語
ページ(範囲)7386-7391
ページ数6
ジャーナルMacromolecules
39
21
DOI
出版ステータス出版済み - 10 17 2006
外部発表はい

All Science Journal Classification (ASJC) codes

  • 有機化学
  • ポリマーおよびプラスチック
  • 無機化学
  • 材料化学

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