Electronic solution to the problem of a kinetic standard for DSC measurements

被引：10

作者：

Sbirrazzuoli, N ^{[1
]}

Vincent, L

Vyazovkin, S

机构：

[1] Univ Nice, Lab Expt Thermodynam, UMR CNRS 6595, F-06108 Nice 2, France

[2] Univ Utah, Dept Chem, Ctr Thermal Anal, Salt Lake City, UT 84112 USA

来源：

CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS | 2000年 / 52卷 / 01期

关键词：

DSC; calibration; simulations; kinetics;

D O I：

10.1016/S0169-7439(00)00072-1

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A device and software have been developed to simulate differential scanning calorimetry (DSC) signals according to a given kinetic law, The heat flow is produced by an electric current passing through a resistor. The needed variation in the heat flow is produced by the software-controlled variation in the voltage applied to the resistor. Both peak area and heat flow calibrations have been applied to measure DSC signals, The effect of these calibrations on the activation energy evaluated by an isoconversional method has been examined. Peak area calibration is found to give rise to a systematic deviation in the activation energy that increases with the heating rate. This undesired effect is eliminated when using heat flow calibration. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：23 / 32

页数：10

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