Excess heat capacity in glass-forming liquid systems containing molecules

被引：0
|
作者：
KE HaiBo [1 ]
WEN Ping [1 ]
WANG WeiHua [1 ]
机构：
[1] Institute of Physics,Chinese Academy of Sciences
来源：
Science China(Physics,Mechanics & Astronomy) | 2013年 / Mechanics & Astronomy)2013卷 / 06期
基金：
中国国家自然科学基金;
关键词：
glass-forming liquid; excess heat capacity; the glass transition;
D O I：
暂无
中图分类号：
O561 [分子物理学];
学科分类号：
摘要：
Excess heat capacities at glass transition temperature in two types of glass-forming systems of [xNaNO3(1x)KNO3]60·[Ca(NO3)2]40(0x1) and Ca(NO3)2yH2O(4y13) are studied.In the former system,with the replacement of K + cation with Na + cation,the excess heat capacity is around 65.1 J mol-1·K-1,while the excess increases by 38.9 J mol-1·K-1 upon one molar H2O content in latter system.A quantitative description to the excess heat capacity is built up with the thermal effects of atomic and molecular translational motion in liquids.The results might offer a further understanding to the glass transition.
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页码：1090 / 1095
页数：6
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