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: Chapter in Book/Report/Conference proceedingConference contribution

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
Title of host publicationPolymer Preprints, Japan
Pages3099-3100
Number of pages2
Volume55
Edition2
Publication statusPublished - 2006
Externally publishedYes
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama
Duration: 2006 Sep 202006 Sep 22

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CityToyama
Period06/9/2006/9/22

Fingerprint

Cyclodextrins
Dynamic light scattering
Gels
Polyethylene glycols
Molecules
Polymer solutions
Solubility
Physical properties
Sodium
Scattering
Temperature

Keywords

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

ASJC Scopus subject areas

  • Engineering(all)

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. In Polymer Preprints, Japan (2 ed., Vol. 55, pp. 3099-3100)

Dynamic light scattering study on sliding mode of polyrotaxane solutions and slide-ring gels. / Okumura, Yasushi; Miyazaki, Sho; Zhao, Changming; Kidowaki, Masatoshi; Karino, Takeshi; Shibayama, Mitsuhiro; Ito, Kohzo.

Polymer Preprints, Japan. Vol. 55 2. ed. 2006. p. 3099-3100.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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. in Polymer Preprints, Japan. 2 edn, vol. 55, pp. 3099-3100, 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, 06/9/20.
Okumura Y, Miyazaki S, Zhao C, Kidowaki M, Karino T, Shibayama M et al. Dynamic light scattering study on sliding mode of polyrotaxane solutions and slide-ring gels. In Polymer Preprints, Japan. 2 ed. Vol. 55. 2006. p. 3099-3100
Okumura, Yasushi ; Miyazaki, Sho ; Zhao, Changming ; Kidowaki, Masatoshi ; Karino, Takeshi ; Shibayama, Mitsuhiro ; Ito, Kohzo. / Dynamic light scattering study on sliding mode of polyrotaxane solutions and slide-ring gels. Polymer Preprints, Japan. Vol. 55 2. ed. 2006. pp. 3099-3100
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AU - Ito, Kohzo

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AB - 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.

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