Gel formation mechanisms of thermo-sensitive polyrotaxane solutions

Toshiyuki Kataoka, Masatoshi Kidowaki, Takao Nakajima, Yohei Nagao, Zhao Changming, Kohzo Ito

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

Abstract

Thermoreversible hydrogels of the aqueous solutions of polyrotaxanes composed of polyethylene glycol and methylated α-CDs were investigated by DSC, X-ray diffraction, and rheological measurements. With increasing temperature, these aqueous solutions show sol to gel transition since hydrophobic interaction among α-CDs leads to aggregation of freely movable α-CDs on a PEG chain. These solutions have several kinds of gel formation mechanisms which strongly depend on the substitution ratio of methyl groups.

Original languageEnglish
Title of host publicationPolymer Preprints, Japan
Pages852
Number of pages1
Volume54
Edition1
Publication statusPublished - 2005
Externally publishedYes
Event54th SPSJ Annual Meeting 2005 - Yokohama
Duration: 2005 May 252005 May 27

Other

Other54th SPSJ Annual Meeting 2005
CityYokohama
Period05/5/2505/5/27

Fingerprint

Gels
Polyethylene glycols
Sols
Hydrogels
Substitution reactions
Agglomeration
X ray diffraction
Temperature

Keywords

  • Cyclodextrins
  • Differential scanning calorimetry
  • Polyrotaxanes
  • Rheology
  • Slide-ring gels
  • Thermoreversible gels

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Kataoka, T., Kidowaki, M., Nakajima, T., Nagao, Y., Changming, Z., & Ito, K. (2005). Gel formation mechanisms of thermo-sensitive polyrotaxane solutions. In Polymer Preprints, Japan (1 ed., Vol. 54, pp. 852)

Gel formation mechanisms of thermo-sensitive polyrotaxane solutions. / Kataoka, Toshiyuki; Kidowaki, Masatoshi; Nakajima, Takao; Nagao, Yohei; Changming, Zhao; Ito, Kohzo.

Polymer Preprints, Japan. Vol. 54 1. ed. 2005. p. 852.

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

Kataoka, T, Kidowaki, M, Nakajima, T, Nagao, Y, Changming, Z & Ito, K 2005, Gel formation mechanisms of thermo-sensitive polyrotaxane solutions. in Polymer Preprints, Japan. 1 edn, vol. 54, pp. 852, 54th SPSJ Annual Meeting 2005, Yokohama, 05/5/25.
Kataoka T, Kidowaki M, Nakajima T, Nagao Y, Changming Z, Ito K. Gel formation mechanisms of thermo-sensitive polyrotaxane solutions. In Polymer Preprints, Japan. 1 ed. Vol. 54. 2005. p. 852
Kataoka, Toshiyuki ; Kidowaki, Masatoshi ; Nakajima, Takao ; Nagao, Yohei ; Changming, Zhao ; Ito, Kohzo. / Gel formation mechanisms of thermo-sensitive polyrotaxane solutions. Polymer Preprints, Japan. Vol. 54 1. ed. 2005. pp. 852
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