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

doi:10.1021/ma061037s

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

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111 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	7386-7391
Number of pages	6
Journal	Macromolecules
Volume	39
Issue number	21
DOIs	https://doi.org/10.1021/ma061037s
State	Published - Oct 17 2006
Externally published	Yes

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title = "Small-angle X-ray scattering study of the pulley effect of slide-ring gels",

abstract = "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.",

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T1 - Small-angle X-ray scattering study of the pulley effect of slide-ring gels

AU - Shinohara, Yuya

AU - Kayashima, Kentaro

AU - Okumura, Yasushi

AU - Zhao, Changming

AU - Ito, Kohzo

AU - Amemiya, Yoshiyuki

PY - 2006/10/17

Y1 - 2006/10/17

N2 - 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.

AB - 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.

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JO - Macromolecules

JF - Macromolecules

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ER -

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

Abstract

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