Abstract
Changes of the state of sorbed water into various polymer films by cooling were investigated by a FT-IR. In case of PMMA, the sorbed water under 58% RH did not freeze even at 153 K but that under 100% RH did at about 250 K. The spectral profile of this ice was the same as that of ice I h. Moreover, during the growth of ice, the band assigned to the water hydrated to the polymer chains also changed drastically. This result suggests that a part (surface) of ice formed in PMMA film interacts with polymer chains. On the other hand, in case of PSt, the sorbed water under 58% RH showed a liquid-like spectrum below 260 K on cooling, and then, freeze at homogeneous nucleation temperature, T H = 235 K, of liquid water. This result suggests that the ice formed in PSt film did not interact with the polymer chain.
| Original language | English |
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| Pages | 1306 |
| Number of pages | 1 |
| State | Published - 2006 |
| Event | 55th SPSJ Annual Meeting - Nagoya, Japan Duration: 2006/05/24 → 2006/05/26 |
Conference
| Conference | 55th SPSJ Annual Meeting |
|---|---|
| Country/Territory | Japan |
| City | Nagoya |
| Period | 2006/05/24 → 2006/05/26 |
Keywords
- FT-IR
- Polymer Film
- Sorbed Water
- Temperature-Perturbation
ASJC Scopus subject areas
- General Engineering