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Dynamical heterogeneity is a term used to describe the anomalous behaviour of glass forming materials undergoing phase transitions from liquid state to the glassy state upon cooling at varying rates. ==Polymers== Polymer properties include viscoelasticity and may be synthetic or natural. When a polymeric liquid is cooled below its freezing temperature without crystallizing, it becomes a supercooled liquid preferably. When the supercooled liquid is further cooled, it becomes a glass.〔 〕 The temperature at which a polymer becomes a glass by fast cooling is called the glass transition temperature Tg. At this temperature, viscosity reaches up to 1013 poise depending upon cooling-rate. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Dynamical heterogeneity」の詳細全文を読む スポンサード リンク
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