Time-Resolved In Situ ATR-IR Observations of the Process of Sorption of Water into a Poly(2-methoxyethyl acrylate) Film
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- Shigeaki Morita
- Department of Chemistry, School of Science and Technology, Kwansei-Gakuin University, Sanda 669-1337, Japan, and Nanotechnology Research Center, Research Institute for Electronic Science, Hokkaido University, Sapporo 060-0812, Japan
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- Masaru Tanaka
- Department of Chemistry, School of Science and Technology, Kwansei-Gakuin University, Sanda 669-1337, Japan, and Nanotechnology Research Center, Research Institute for Electronic Science, Hokkaido University, Sapporo 060-0812, Japan
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- Yukihiro Ozaki
- Department of Chemistry, School of Science and Technology, Kwansei-Gakuin University, Sanda 669-1337, Japan, and Nanotechnology Research Center, Research Institute for Electronic Science, Hokkaido University, Sapporo 060-0812, Japan
書誌事項
- 公開日
- 2007-03-01
- DOI
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- 10.1021/la0625998
- 公開者
- American Chemical Society (ACS)
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説明
A process of water sorption into a biocompatible polymer, poly(2-methoxyethyl acrylate) (PMEA), was investigated by time-resolved, in situ, attenuated total reflection infrared spectroscopy. Evidence for three different types of hydrated water in PMEA, that is, nonfreezing water, freezing bound water, and freezing water, were found. Each hydration structure was elucidated at the functional group level. Nonfreezing water, which never crystallizes, even at -100 degrees C, has a C=O...H-O type of hydrogen bonding interaction with the carbonyl group of PMEA. Freezing bound water, which crystallizes in a heating process below 0 degrees C, interacts with the methoxy moiety in the PMEA side chain terminal. Freezing water, which crystallizes approximately 0 degrees C, has bulk-water-like structure with an O-H...O-H hydrogen bonds network. It has been concluded from the present study that the methoxy moiety in the PMEA side chain terminal plays an important role for the excellent biocompatibility of PMEA.
収録刊行物
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- Langmuir
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Langmuir 23 (7), 3750-3761, 2007-03-01
American Chemical Society (ACS)
