中国物理B ›› 2016, Vol. 25 ›› Issue (7): 75101-075101.doi: 10.1088/1674-1056/25/7/075101

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

Recrystallization of freezable bound water in aqueous solutions of medium concentrations

Lishan Zhao(赵立山), Liqing Pan(潘礼庆), Ailing Ji(纪爱玲), Zexian Cao(曹则贤), Qiang Wang(王强)   

  1. 1 Department of Physics, University of Science and Technology Beijing, Beijing 100083, China;
    2 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2016-02-21 修回日期:2016-03-28 出版日期:2016-07-05 发布日期:2016-07-05
  • 通讯作者: Qiang Wang E-mail:qwang@iphy.ac.cn
  • 基金资助:

    Project supported by the Knowledge Innovation Project of Chinese Academy of Sciences on Water Science Research (Grant No. KJZD-EW-M03) and the National Natural Science Foundation of China (Grant Nos. 11474325 and 11290161).

Recrystallization of freezable bound water in aqueous solutions of medium concentrations

Lishan Zhao(赵立山)1,2, Liqing Pan(潘礼庆)1, Ailing Ji(纪爱玲)2, Zexian Cao(曹则贤)2, Qiang Wang(王强)2   

  1. 1 Department of Physics, University of Science and Technology Beijing, Beijing 100083, China;
    2 Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2016-02-21 Revised:2016-03-28 Online:2016-07-05 Published:2016-07-05
  • Contact: Qiang Wang E-mail:qwang@iphy.ac.cn
  • Supported by:

    Project supported by the Knowledge Innovation Project of Chinese Academy of Sciences on Water Science Research (Grant No. KJZD-EW-M03) and the National Natural Science Foundation of China (Grant Nos. 11474325 and 11290161).

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摘要：

For aqueous solutions with freezable bound water, vitrification and recrystallization are mingled, which brings difficulty to application and misleads the interpretation of relevant experiments. Here, we report a quantification scheme for the freezable bound water based on the water-content dependence of glass transition temperature, by which also the concentration range for the solutions that may undergo recrystallization finds a clear definition. Furthermore, we find that depending on the amount of the freezable bound water, different temperature protocols should be devised to achieve a complete recrystallization. Our results may be helpful for understanding the dynamics of supercooled aqueous solutions and for improving their manipulation in various industries.

关键词: recrystallization, aqueous solution, glass transition, freezable bound water

Abstract:

For aqueous solutions with freezable bound water, vitrification and recrystallization are mingled, which brings difficulty to application and misleads the interpretation of relevant experiments. Here, we report a quantification scheme for the freezable bound water based on the water-content dependence of glass transition temperature, by which also the concentration range for the solutions that may undergo recrystallization finds a clear definition. Furthermore, we find that depending on the amount of the freezable bound water, different temperature protocols should be devised to achieve a complete recrystallization. Our results may be helpful for understanding the dynamics of supercooled aqueous solutions and for improving their manipulation in various industries.

Key words: recrystallization, aqueous solution, glass transition, freezable bound water

中图分类号:  (Thermodynamic properties, equations of state)

  • 51.30.+i
64.70.D- (Solid-liquid transitions) 65.20.-w (Thermal properties of liquids)