Relation between freezing-in due to linear cooling and the dynamic glass transition temperature by temperature-modulated DSC

被引：79

作者：

Hensel, A ^{[1
]}

Schick, C ^{[1
]}

机构：

[1] Univ Rostock, Fachbereich Phys, D-18051 Rostock, Germany

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1998年 / 235卷

关键词：

D O I：

10.1016/S0022-3093(98)00607-3

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Temperature-modulated differential scanning calorimetry (DSC) allows for the investigation of the glass transition in two different time scales. One is related to the response on the periodic temperature perturbation(10(-4) Hz < nu < 10(-1) Hz), the other to the vitrification due to cooling at a linear rate. The latter is equivalent to the glass transition observed in DSC cooling experiments. By varying modulation frequency and cooling rate it is possible to compare directly the corresponding time scales. In the case of vitrification the frequency related to the cooling rate can be estimated. The results from different organic and inorganic compounds are in agreement with the predictions of Donth's fluctuation approach to glass transition. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：510 / 516

页数：7

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