Complex heat capacity measurements by TMDSC. Part 2. Algorithm for amplitude and phase angle correction

被引：34

作者：

Merzlyakov, M ^{[1
]}

Schick, C ^{[1
]}

机构：

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

来源：

THERMOCHIMICA ACTA | 1999年 / 330卷 / 1-2期

关键词：

complex heat capacity; thermal conductivity; TMDSC; calibration; heat transfer; phase angle;

D O I：

10.1016/S0040-6031(99)00020-9

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

To treat data from temperature modulated differential scanning calorimetry (TMDSC) in terms of complex heat capacity, one should know heat transfer and apparatus influences on experimental results. Concise theoretical model for power compensated DSC is given, which includes description of most important heat transfer paths and apparatus effects. Estimations for real experimental conditions are made. An algorithm to determine parameters for calibration to exclude heat transfer and apparatus effects is proposed. This allows to increase upper frequency limit and accuracy of TMDSC measurements. Based on theoretical results the key points of the correction and some experimental evidence are discussed. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：65 / 73

页数：9

共 15 条

[1] SPECIFIC-HEAT SPECTROSCOPY OF GLYCEROL AND PROPYLENE-GLYCOL NEAR THE GLASS-TRANSITION [J].