Dynamic light scattering study on sliding mode of polyrotaxane solutions and slide-ring gels

Yasushi Okumura, Sho Miyazaki, Changming Zhao, Masatoshi Kidowaki, Takeshi Karino, Mitsuhiro Shibayama, Kohzo Ito

研究成果: Paper査読

抄録

We have reported the slide-ring gel (topological gel) synthesized using the polyrotaxane which consists of α-cyclodextrin and polyethylene glycol and have reported various physical properties. We have observed the polyrotaxane dissolved in sodium hydroxide aqueous solution using the dynamic-light- scattering method. In addition to the cooperative and translational modes observed in the usual polymer solutions, we found out the new kind of diffusion mode. Furthermore, we reported that this mode originated in sliding movement of cyclodextrin molecules on PEG chains. We call this mode "sliding mode". But, its mechanism was not known. We have improved the solubility of polyrotaxane by introducing hydroxypropyl groups to hydroxyl groups of cyclodextrin. We call it hydroxypropyl polyrotaxane (h-APR). In this study, we report cooperative, translational, and sliding mode as functions of concentration, scattering angle and temperature. We conclude that the sliding mode is cooperative diffusion mode based on sliding and colliding of cyclodextrin molecules on flexible random PEG network.

本文言語English
ページ3099-3100
ページ数2
出版ステータスPublished - 2006 12 1
外部発表はい
イベント55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
継続期間: 2006 9 202006 9 22

Conference

Conference55th Society of Polymer Science Japan Symposium on Macromolecules
国/地域Japan
CityToyama
Period06/9/2006/9/22

ASJC Scopus subject areas

  • 工学(全般)

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