Thermal behavior of trehalose dihydrate (Th) and β-anhydrous trehalose (Tβ) by in-situ laboratory parallel-beam X-ray powder diffraction

被引：0
|
作者：
Paolo Ballirano
Claudia Sadun
机构：
[1] “Sapienza” Università di Roma,Dipartimento di Scienze della Terra
[2] “Sapienza” Università di Roma,Dipartimento di Chimica
来源：
Structural Chemistry | 2009年 / 20卷
关键词：
Trehalose dihydrate ; β-Anhydrous trehalose ; Thermal behavior; Parallel-beam X-ray powder diffraction; Rietveld method;
D O I：
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学科分类号：
摘要：
Thermal behaviors of trehalose dihydrate (Th) and β-anhydrous trehalose (Tβ) have been investigated by in-situ laboratory parallel-beam X-ray powder diffraction. Data indicate that both phases show essentially the same volume expansion but expansion of the anhydrous form is markedly anisotropic due to the features of the hydrogen-bond network. Under the present experimental conditions, dehydration starts at 66 °C and within the 75 < T < 114 °C the presence of the Tα anhydrous polymorphic form has been detected.
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页码：815 / 823
页数：8
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