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

Research output: Contribution to conferencePaper

Abstract

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.

Original languageEnglish
Pages3099-3100
Number of pages2
Publication statusPublished - 2006 Dec 1
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
Duration: 2006 Sep 202006 Sep 22

Conference

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

Keywords

  • Dynamic light scattering
  • Quasi-elastic light scattering
  • Slide-Ring gel (SR gel)
  • Topological gel

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Okumura, Y., Miyazaki, S., Zhao, C., Kidowaki, M., Karino, T., Shibayama, M., & Ito, K. (2006). Dynamic light scattering study on sliding mode of polyrotaxane solutions and slide-ring gels. 3099-3100. Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.