Abstract
It has been reported that the water in aqueous PEG solution freezes at ca. -40 °C upon heating from lower temperature, ca. -100 °C, thus, such a water is called Cold-Crystallizable Water (CCW). In this study, the structure of CCW in PEG-DME-water system was examined by FT-IR. CCW was observed at a high cooling rate (120 K/hour) at ca. 223 K upon heating, whereas not at a low cooling rate (30 K/hour). These results indicate that anomalous water such as CCW may not exist at room temperature. Furthermore, spectral changes at ca. 223 K where CCW occurs indicate that dimeric water associated with PEG chain crystallize at that temperature.
| Original language | English |
|---|---|
| Pages | 1184 |
| Number of pages | 1 |
| State | Published - 2005 |
| Event | 54th SPSJ Annual Meeting 2005 - Yokohama, Japan Duration: 2005/05/25 → 2005/05/27 |
Conference
| Conference | 54th SPSJ Annual Meeting 2005 |
|---|---|
| Country/Territory | Japan |
| City | Yokohama |
| Period | 2005/05/25 → 2005/05/27 |
Keywords
- Cold crystallization
- FT-IR
- PEG
- Water structure
ASJC Scopus subject areas
- General Engineering