Phase diagram of a solution undergoing inverse melting

被引:19
作者
Angelini, R. [1 ]
Ruocco, G. [1 ,2 ]
De Panfilis, S. [1 ]
机构
[1] Univ Roma La Sapienza, CNR, INFM, Res Ctr SOFT, I-00185 Rome, Italy
[2] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
来源
PHYSICAL REVIEW E | 2008年 / 78卷 / 02期
关键词
D O I
10.1103/PhysRevE.78.020502
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
The phase diagram of alpha-cyclodextrin/water/4-methylpyridine solutions, a system undergoing inverse melting, has been studied by differential scanning calorimetry, theological methods, and x-ray diffraction. Two different fluid phases separated by a solid region have been observed in the high a-cyclodextrin concentration range (c >= 150 mg/ml). Decreasing c, the temperature interval where the solid phase exists decreases and eventually disappears, and a first-order phase transition is observed between the two different fluid phases.
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页数:4
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