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Thermogravimetric analyzer: Basic principle, workflow and application in practical research

Release time:
2023/08/30 14:33
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The thermogravimetric analyzer is an important material science research tool, which is able to measure the mass change of substances at high temperatures, thus providing information about the stability and thermal properties of materials. This paper introduces the basic principle, work flow and application of thermogravimetric analyzer.


The basic principle of the thermogravimetric analyzer is based on the relationship between mass and temperature. At high temperatures, substances undergo processes such as molecular decomposition, chemical reactions, or evaporation, which lead to changes in the mass of the substance. Thermogravimetric analyzers are able to measure changes in the mass of a substance, thus providing important information about the thermal stability and reaction kinetics of a substance.

The workflow of a thermogravimetric analyzer consists of the following steps:

Sample preparation: The material to be tested is made into a standard spline and carried by a specific crucible.
Weighing before the experiment: Use a high-precision electronic balance to weigh the total mass of the spline and crucible.
Temperature control: The spline and crucible are placed in the heating unit and the temperature is gradually increased while precise temperature control is performed.
Quality monitoring: During the heating process, real-time monitoring of the quality changes of the spline and crucible.
Data processing and analysis: The monitored mass change data are analyzed and processed to obtain the thermogravimetric curve of the substance and the related thermal property data.
Thermogravimetric analyzer has a wide range of applications in practical research, such as in the field of chemistry, can be used to study the thermal stability of organic compounds, polymers, catalysts, drugs and other substances; In the field of biomedicine, it can be used to study the thermal properties of proteins, enzymes, DNA and other biological macromolecules. In the field of materials science, it can be used to study the thermal properties and sintering characteristics of polymer materials, metal materials, ceramics and other materials.

In short, the thermogravimetric analyzer is an important scientific research tool, which can provide important information about the thermal stability and reaction kinetics of substances, and is widely used in chemistry, biomedicine, materials science and other fields.