The glass transition temperature versus the fictive temperature

被引:206
作者
Badrinarayanan, Prashanth [1 ]
Zheng, Wei [1 ]
Li, Qingxiu [1 ]
Simon, Sindee L. [1 ]
机构
[1] Texas Tech Univ, Dept Chem Engn, Lubbock, TX 79409 USA
基金
美国国家科学基金会;
关键词
D O I
10.1016/j.jnoncrysol.2007.04.025
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
A comparison of the values of the glass transition temperature (T-g) measured on cooling and the limiting fictive temperature (T-f(')) measured on heating as a function of cooling rate is performed for a polystyrene sample using both capillary dilatometry and differential scanning calorimetry (DSC). The results from both techniques indicate that T-1(') is systematically lower than T-g presumably due to the breadth of the relaxation on cooling. The Tool-Narayanaswamy-Moynihan (TNM) model is used to fit the experimental data from dilatometry and DSC in order to ascertain the origins of the higher value of T-g compared to T-1(-) (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:2603 / 2612
页数:10
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