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High-resolution calorimetry on thermal behavior of glycerol (I): Glass transition, crystallization and melting, and discovery of a solid-solid transition

TitleHigh-resolution calorimetry on thermal behavior of glycerol (I): Glass transition, crystallization and melting, and discovery of a solid-solid transition
Publication TypeJournal Article
Year of Publication2011
AuthorsSou, K, Nishikawa, K, Koga, Y, Tozaki, K-ichi
JournalCHEMICAL PHYSICS LETTERS
Volume506
Pagination217-220
Date PublishedAPR 20
ISSN0009-2614
Abstract

We determined temperature scanning thermograms of glycerol, with the same scanning rate for cooling and warming cycles by using an ultra-sensitive calorimeter at the scanning rate beta from 0.05 to 4 mK/s. Four peaks were observed during the warming process starting from below the glass transition temperature T'(g); glass transition, crystallization, solid-solid phase transition, and melting. T'(g) and the crystallization temperature T(p) depends on beta with Arrhenius relation. A broad melting behavior was obtained in a temperature range larger than 10 K, which suggests that structural distribution exists in the crystal. The solid-solid phase transition at 229.1 K was discovered. (c) 2011 Elsevier B.V. All rights reserved.

DOI10.1016/j.cplett.2011.03.043