Swelling and shrinking behavior of Slide-Ring gel

Rumiko Kasahara, Kentaro Kayashima, Yoshiyuki Amemiya, Yasushi Okumura, Kohzo Ito

Research output: Contribution to conferencePaper

Abstract

The slide-ring gel is synthesized from the polyrotaxane in which a poly(ethylene glycol) chain with large molecular weight is sparsely included by α-cyclodextrins. By chemically cross-linking α-cyclodextrins contained in the polyrotaxanes in solutions, the polymer chains with bulky end groups are topologically interlocked by figure-of-eight cross-links. Therefore, the polymer chains freely pass through the cross-links acting like pulleys, which is supposed to automatically equalize the nanoscopic heterogeneity in structure and stress. In this study, we immersed a slide-ring gel in water 2 hours after the initiation of the reaction, and observed that the gel swelled to ca. 8,000 times the dry weight. These volume changes by a change of the solvent composition (acetone/water mixture) were reversible without first order volume transition unlike conventional electrolyte chemical gels.

Original languageEnglish
Number of pages1
Publication statusPublished - Dec 1 2005
Externally publishedYes
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: May 25 2005May 27 2005

Other

Other54th SPSJ Annual Meeting 2005
CountryJapan
CityYokohama
Period5/25/055/27/05

Fingerprint

Swelling
Gels
Cyclodextrins
Pulleys
Polymers
Acetone
Polyethylene glycols
Water
Molecular weight
Electrolytes
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Kasahara, R., Kayashima, K., Amemiya, Y., Okumura, Y., & Ito, K. (2005). Swelling and shrinking behavior of Slide-Ring gel. Paper presented at 54th SPSJ Annual Meeting 2005, Yokohama, Japan.

Swelling and shrinking behavior of Slide-Ring gel. / Kasahara, Rumiko; Kayashima, Kentaro; Amemiya, Yoshiyuki; Okumura, Yasushi; Ito, Kohzo.

2005. Paper presented at 54th SPSJ Annual Meeting 2005, Yokohama, Japan.

Research output: Contribution to conferencePaper

Kasahara, R, Kayashima, K, Amemiya, Y, Okumura, Y & Ito, K 2005, 'Swelling and shrinking behavior of Slide-Ring gel', Paper presented at 54th SPSJ Annual Meeting 2005, Yokohama, Japan, 5/25/05 - 5/27/05.
Kasahara R, Kayashima K, Amemiya Y, Okumura Y, Ito K. Swelling and shrinking behavior of Slide-Ring gel. 2005. Paper presented at 54th SPSJ Annual Meeting 2005, Yokohama, Japan.
Kasahara, Rumiko ; Kayashima, Kentaro ; Amemiya, Yoshiyuki ; Okumura, Yasushi ; Ito, Kohzo. / Swelling and shrinking behavior of Slide-Ring gel. Paper presented at 54th SPSJ Annual Meeting 2005, Yokohama, Japan.1 p.
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