【摘要】 本文用我们液态低频力学谱方法对玻璃化转变研究领域中一个持续半个多世纪、十分令人困扰的热点水的玻璃化转变问题进行了研究。用表征玻璃化转变最直接的参量力学模量,首次实现对水的玻璃化转变过程的明确表征,得出水的玻璃化转变温度是163K,而不是长期一直认为的136K。另外,水的玻璃化转变表现出不同于传统玻璃化转变的反常耗散行为。研究还表明,水的玻璃化转变温度表现出重要的同位素效应,这是水的玻璃化转变奇异特征的一个反映,也是在玻璃化转变研究中首次观测到同位素效应。更多还原

【Abstract】 Water glass transition,as a hotspot of the glass transition field that lasts out and puzzles scientists more than half of a century,is investigated by the liquid low-frequency mechanical spectrum method recently invented by us in this paper.By the modulus that is most direct quantity indicating the glass transition phenomenon,the water glass transition was indicated for the first time.It was obtained that the water glass transition temperature is about 163K,rather than the long time accepted 136K.Moreover,the water glass transition shows an anomalous dissipation behavior that is quite different to the traditional one.The investigation also indicated that the water glass transition temperature has the isotopic effect just as a reflection of its fantastic characteristics and an enlightening phenomenon discovered for the first time in glass transition field.更多还原