Calorimetric fragility of maltitol
Calorimetric fragility of maltitol
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DOI：
10.1080/0141159031000085723
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发表时间：
2003-09
影响因子：
1.6
通讯作者：
N. Lebrun;J. Van Miltenburg;O. Bustin;M. Descamps
中科院分区：
文献类型：
--
作者：
N. Lebrun;J. Van Miltenburg;O. Bustin;M. Descamps
The heat capacity of maltitol has been measured with an adiabatic calorimeter for the crystal from 100 K to 425 K (T m = 420 K), for the glass from 249 K to T g (around 311 K) and for the liquid from T g to 400 K. The heat of melting is 55.068 kJ/mol. The calorimetric glass transition occurs at about T g = 311 K with a sudden jump of the heat capacity ΔC p (T g ) of about 243.6 J/(K mol). The excess entropy between the undercooled liquid and the crystal was calculated from the heat capacity data and was used to estimate the Kauzmann temperature T K which was found 50 K below T g . ΔC p (T g ) and T K for maltitol were compared to other compounds like sugars, polyol and hydrogen bonded liquids. It has been found that the glass former maltitol is a "fragile" liquid on the thermodynamic point of view.
