A study of temperature-modulated differential scanning calorimetry with high-resolution infrared thermography

被引：18

作者：

Androsch, R

Pyda, M

Wang, H

Wunderlich, B ^{[1
]}

机构：

[1] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

[2] Oak Ridge Natl Lab, High Temp Mat Lab, Oak Ridge, TN 37831 USA

[3] Oak Ridge Natl Lab, Div Chem & Analyt Sci, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2000年 / 61卷 / 03期

基金：

美国国家科学基金会;

关键词：

differential scanning calorimetry (DSC); infrared thermography; phase angle; temperature gradient; temperature-modulated differential scanning calorimetry (TMDSC);

D O I：

10.1023/A:1010158621847

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Temperature gradients within the sample and furnace in temperature-modulated differential scanning calorimetry (TMDSC) are studied for a power-compensation calorimeter of the Perkin Elmer type. The temperature measurements were made with a high-speed, high-resolution infrared camera. Differences between programmed and actual temperature amplitudes are determined as a function of sample thickness for a sawtooth modulation with up to 48 K min(-1) heating and cooling rates. Phase angles have been established, and the effect of open and sealed sample pans has been analyzed. A simple one-dimensional description of the observed effects is made and a three-dimensional one is suggested based on a model available in the literature.

引用

页码：661 / 679

页数：19