期刊
STRUCTURAL CHEMISTRY
卷 20, 期 5, 页码 815-823出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11224-009-9473-5
关键词
Trehalose dihydrate T-h; beta-Anhydrous trehalose T-beta; Thermal behavior; Parallel-beam X-ray powder diffraction; Rietveld method
Thermal behaviors of trehalose dihydrate (T (h)) and beta-anhydrous trehalose (T (beta)) 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 A degrees C and within the 75 < T < 114 A degrees C the presence of the T (alpha) anhydrous polymorphic form has been detected.
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