Preparation and property of liquid crystalline slide-ring gels

Masatoshi Kidowaki, Takao Nakajima, Jun Araki, Toshiyuki Kataoka, Christian Ruslim, Changming Zhao, Kohzo Ito

Research output: Contribution to conferencePaper

Abstract

The slide-ring gels formed by crosslinking of polyrotaxane (PR) composed of polyethylene glycol and α-cyclodextrin (α-CD) have sliding crosslinks. The gels show good properties in tensibility and strength compared to conventional chemical and physical gels. On the other hand, liquid crystalline gels are hybrid materials having both properties of gels and liquid crystals (LCs). In this study, LC-PR and their crosslinked product of LC slide-ring gels were prepared by introducing cyanobiphenyl (CNBP) groups into the α-CDs of PR. The PR substituted by CNBP through alkyl chain exhibits LC phase. The phase transition behavior of the LC-PR was observed by polarized optical microscope. Schlieren texture, typical for nematic phase, was observed at room temperature under crossed polarizers. The nematic to isotropic phase transition was observed with increasing temperature. Interestingly, the LC-PR dissolved in a low molecular weight nematic LC, 4-cyano-4′-pentylbipheny, and the solution formed a slide-ring gel by adding a crosslinking reagent.

Original languageEnglish
Pages3931-3932
Number of pages2
Publication statusPublished - 2006 Dec 1
Externally publishedYes
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

  • Cyclodextrin
  • Liquid crystalline gel
  • Polyethylene glycol
  • Polyrotaxane
  • Slide ring gel
  • Supramolecule

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Kidowaki, M., Nakajima, T., Araki, J., Kataoka, T., Ruslim, C., Zhao, C., & Ito, K. (2006). Preparation and property of liquid crystalline slide-ring gels. 3931-3932. Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.