Unique cooperative motion of water-Liquid to glass of aqueous solutions

水-液到玻璃水溶液的独特协同运动

• 批准号: 19540429
• 负责人: SHINYASHIKI Naoki
• 金额: $ 2.83万
• 依托单位: Tokai University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19540429/
• 关键词: 水; 水溶液; ガラス転移; 過冷却液体; 緩和現象; 複素誘電率; 協同運動; Johari-Goldstein relaxation; Johari-Goldstein

Broadband dielectric measurements were performed at temperatures between 80K and 300K in the frequency range of 1 mHz-30 GHz for various kinds of aqueous solutions. The solutes introduced for the aqueous solutions were glycerol, propanol, ethylene glycol, ethyleneglycol oligomers, fructose, polymers, and proteins. The primary relaxation originated from cooperative motion of water and solute molecules and the secondary relaxation due to local motion of water molecules were observed at around the glass transition temperature for all the aqueous solutions. Since the properties of hydrated proteins, aqueous solutions, and the mixtures of van der Waals liquids are similar, we transfer the theoretical understanding gained in the study of the last systems sequentially to the two other increasingly more complex systems. The primary and secondary processes are inseparable or symbiotic processes.

在1 MHz-30 GHz的频率范围内，在80K-300K的温度范围内对各种水溶液进行了宽带介电测量。为水溶液引入的溶质有甘油、丙醇、乙二醇、乙二醇齐聚物、果糖、聚合物和蛋白质。在玻璃化转变温度附近，均观察到水分子和溶质分子的协同运动引起的一次弛豫和水分子局部运动引起的二次弛豫。由于水合蛋白质、水溶液和van der Waals液体混合物的性质相似，我们将在最后一个系统的研究中获得的理论理解依次转移到另外两个日益复杂的系统。初级过程和次级过程是不可分割或共生的过程。

项目成果

Glass transitions and dielectric relaxations of poly (vinyl pyrrolidone) / 1-propanol mixtures

聚（乙烯基吡咯烷酮）/1-丙醇混合物的玻璃化转变和介电弛豫

• 发表时间: 2008
• 作者: R. Okishima;A. Shimada;W. Yamamoto;N. Shinyashiki;R. Kita;S. Yagihara;A. Spanoudaki;A. Kyritsis;P. Pissis
• 通讯作者: P. Pissis

RESOLUTION OF SOME CURRENT PROBLEMS IN SOFT MATTER PHYSICS BY ADIABATIC CALORIMETRY

用绝热量热法解决软物质物理中当前的一些问题

• 发表时间: 2008
• 作者: K. L. Ngai;et al.
• 通讯作者: et al.

広帯域誘電分光法によるリゾチーム水溶液のガラス転移

宽带介电光谱法测定溶菌酶水溶液的玻璃化转变

• 发表时间: 2009
• 作者: 疋田由貴;他
• 通讯作者: 他

The glass transition and dielectric secondary relaxation of fructose-water mixtures.

• DOI: 10.1021/jp807038r
• 发表时间: 2008-11
• 期刊: The journal of physical chemistry. B
• 作者: N. Shinyashiki;M. Shinohara;Y. Iwata;T. Goto;M. Oyama;S. Suzuki;W. Yamamoto;S. Yagihara;T. Inoue;S. Oyaizu;S. Yamamoto;K. Ngai;S. Capaccioli

Dielectric relaxation measurement and analysis of restricted water structure in rice kernels

• DOI: 10.1088/0957-0233/18/4/004
• 发表时间: 2007-04-01
• 期刊: MEASUREMENT SCIENCE AND TECHNOLOGY
• 影响因子: 2.4
• 作者: Yagihara, Shin;Oyama, Mikio;Shinyashiki, Naoki
• 通讯作者: Shinyashiki, Naoki