| 言語種別 | 英語 |
|---|---|
| 発行・発表の年月 | 2023/01 |
| 形態種別 | 学術研究論文 |
| 査読 | 査読あり |
| 招待論文 | 招待あり |
| 標題 | Thermal Behavior of Water in Sephadex® G25 Gels at Low Temperatures Studied by Adiabatic Calorimetry |
| 執筆形態 | 共著 |
| 掲載誌名 | Gels |
| 掲載区分 | 国外 |
| 出版社・発行元 | MDPI |
| 巻・号・頁 | (126),9-24 |
| 総ページ数 | 16 |
| 担当区分 | 筆頭著者 |
| 著者・共著者 | ◎Noriko Onoda-Yamamuro, Hiroaki Minato, Eiji Nakayama and Norio Murase |
| 概要 | Thermal behavior of water in a crosslinked dextran gel, Sephadex® G25 was investigated by using adiabatic calorimetry. Heat capacities and enthalpy-relaxation rates of the gel-containing water of mass ratio h (=g H2O/g dry G25) = 1.00 were measured between 80 and 300 K during rewarming, where the gel was intermittently heated at the rate of 50–100 mK min^-1. Although an exotherm indicating ice crystallization during rewarming was confirmed with the gel precooled rapidly, at 5 K min^-1, it disappeared when precooled slowly, at 20 mK min^-1. During rewarming after the rapid cooling, two glass transitions were observed at ca. 175 K and 240–242 K. 20 mK min^-1.The mechanism of the frozen state of water in the gel was discussed. |
| researchmap用URL | https://www.mdpi.com/2310-2861/9/2/126 |