文献类型：期刊文献

英文题名：Relaxation effects in an organic glassy material

作者：Wu, Chifei[1]

机构：[1]E China Univ Sci & Technol, Inst Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2003

卷号：315

期号：3

起止页码：321

外文期刊名：JOURNAL OF NON-CRYSTALLINE SOLIDS

收录：;EI(收录号：2002527297736);WOS:【SCI-EXPANDED(收录号:WOS:000180270100012)】；

语种：英文

外文关键词：Annealing - Chemical relaxation - Cooling - Crystalline materials - Differential scanning calorimetry - Glass transition - Hydrogen bonds - Vitrification - X ray diffraction

摘要：Thermal properties of an organic compound, 3,9-bis{1,1-dimethyl-2[beta-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]ethyl}-2,4,8,10-tetraoxaspiro[5,5]-undecane, abbreviated as AO-80, were investigated. The initial AO-80 is a complete crystal, whereas AO-80 obtained by cooling from its melting state is a glass. The differential scanning calorimetry curves of vitrified AO-80 annealed at 100 degreesC showed an endothermic peak just above its glass-transition temperature. This endothermic peak is assigned to a first-order transition from a disordered state to an ordered state. The ordered structure organized by an intermolecular hydrogen bond was confirmed by the wide-angle X-ray diffraction. (C) 2002 Elsevier Science B.V. All rights reserved.