Polyrotaxane-polymer-water aqueous two-phase system

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

Research output: Contribution to conferencePaperpeer-review


We investigated blend gels of polyrotaxane (PR) - polyvinyl alcohol (PVA). When we prepare PR-PVA blend gels under certain conditions, the gels became turbid. To reveal this phenomenon, we prepared PR-PVA mixture solution. When having observed it, the solution separated two phases. Phenomena like this are known as 'aqueous two-phase separation'. We suspected that the reason why gels become turbid is phase separation under mixture solution. So we made phase diagram for PR-PVA mixture solutions, and made gels under various concentration. As a result, comparing the phase diagram with the gel-appearances, there are strong correlations between turbid gels and aqueous two-phase.

Original languageEnglish
Number of pages1
Publication statusPublished - 2005
Externally publishedYes
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: 2005 May 252005 May 27


Conference54th SPSJ Annual Meeting 2005


  • Aqueous two-phase system
  • Cyclodextrin
  • Polyrotaxanes
  • Polyvinyl alcohol
  • Ring-slide gels
  • Supramolecules

ASJC Scopus subject areas

  • Engineering(all)


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