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 language | English |
|---|---|
| Number of pages | 1 |
| Publication status | Published - 2005 Dec 1 |
| Event | 54th SPSJ Annual Meeting 2005 - Yokohama, Japan Duration: 2005 May 25 → 2005 May 27 |
Conference
| Conference | 54th SPSJ Annual Meeting 2005 |
|---|---|
| Country | Japan |
| City | Yokohama |
| Period | 05/5/25 → 05/5/27 |
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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. Paper presented at 54th SPSJ Annual Meeting 2005, Yokohama, Japan.