Study of cold-crystallization for aqueous PEG solution

Tetsuya Motonaga; Makoto Gemmei-Ide; Hiromi Kitano; Mitsuhiro Fukuda

Study of cold-crystallization for aqueous PEG solution

Tetsuya Motonaga^*, Makoto Gemmei-Ide, Hiromi Kitano, Mitsuhiro Fukuda

^*この論文の責任著者

工学科　応用化学コース

研究成果: 会議への寄与 › 学会論文 › 査読

抄録

It has been reported that the water in aqueous PEG solution freezes at ca. -40°C upon heating from lower temperature, ca. -100°C. Such water is called "Cold-Crystallizable Water (CCW)". In this study, the state of CCW in PEG-DME-water system was examined by FT-IR. The cold-crystallization of both water and PEG-DME 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). Spectral changes at ca. 223 K where CCW occurs indicate that dimeric water associated with PEG chain crystallizes at that temperature.

本文言語	英語
ページ	3255-3256
ページ数	2
出版ステータス	出版済み - 2005
イベント	54th SPSJ Symposium on Macromolecules - Yamagata, 日本継続期間: 2005/09/20 → 2005/09/22

学会

学会	54th SPSJ Symposium on Macromolecules
国/地域	日本
City	Yamagata
Period	2005/09/20 → 2005/09/22

ASJC Scopus 主題領域

工学一般

引用スタイル

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title = "Study of cold-crystallization for aqueous PEG solution",

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. Such water is called {"}Cold-Crystallizable Water (CCW){"}. In this study, the state of CCW in PEG-DME-water system was examined by FT-IR. The cold-crystallization of both water and PEG-DME 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). Spectral changes at ca. 223 K where CCW occurs indicate that dimeric water associated with PEG chain crystallizes at that temperature.",

keywords = "Aqueous polymer solution, Cold-crystallization, FT-IR, Water",

author = "Tetsuya Motonaga and Makoto Gemmei-Ide and Hiromi Kitano and Mitsuhiro Fukuda",

year = "2005",

language = "英語",

pages = "3255--3256",

note = "54th SPSJ Symposium on Macromolecules ; Conference date: 20-09-2005 Through 22-09-2005",

}

TY - CONF

T1 - Study of cold-crystallization for aqueous PEG solution

AU - Motonaga, Tetsuya

AU - Gemmei-Ide, Makoto

AU - Kitano, Hiromi

AU - Fukuda, Mitsuhiro

PY - 2005

Y1 - 2005

N2 - It has been reported that the water in aqueous PEG solution freezes at ca. -40°C upon heating from lower temperature, ca. -100°C. Such water is called "Cold-Crystallizable Water (CCW)". In this study, the state of CCW in PEG-DME-water system was examined by FT-IR. The cold-crystallization of both water and PEG-DME 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). Spectral changes at ca. 223 K where CCW occurs indicate that dimeric water associated with PEG chain crystallizes at that temperature.

AB - It has been reported that the water in aqueous PEG solution freezes at ca. -40°C upon heating from lower temperature, ca. -100°C. Such water is called "Cold-Crystallizable Water (CCW)". In this study, the state of CCW in PEG-DME-water system was examined by FT-IR. The cold-crystallization of both water and PEG-DME 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). Spectral changes at ca. 223 K where CCW occurs indicate that dimeric water associated with PEG chain crystallizes at that temperature.

KW - Aqueous polymer solution

KW - Cold-crystallization

KW - FT-IR

KW - Water

UR - http://www.scopus.com/inward/record.url?scp=33645581925&partnerID=8YFLogxK

M3 - 学会論文

AN - SCOPUS:33645581925

SP - 3255

EP - 3256

T2 - 54th SPSJ Symposium on Macromolecules

Y2 - 20 September 2005 through 22 September 2005

ER -

Study of cold-crystallization for aqueous PEG solution

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学会

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