Differential Thermal Balance - Mass Spectrometry Method

Measurement of weight change, differential thermal analysis, heat quantity, and mass of volatile components resulting from heating the sample.

TG-DTA simultaneously evaluates weight changes due to heating (TG) and thermal behavior of endothermic and exothermic reactions (DTA). Additionally, TG-DTA-MS continuously assesses volatile components (MS) along with TG and DTA evaluations. - TG allows for the detection of weight changes on the order of percentage. - DTA provides insights into reactions such as pyrolysis, melting, sublimation, oxidation, combustion, and phase transitions. - MS enables the structural estimation of volatile components and decomposition products.

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■TG: Thermogravimetry The change in weight caused by heating is detected by the tilt of a balance. The balance is continuously adjusted to remain level. In this way, the continuous recording of the weight difference with a reference substance is achieved. The conditions of oxidation-reduction, thermal decomposition, adsorption-desorption, evaporation, and volatility can be measured from the increase or decrease in weight and the thermal changes indicated by DTA. ■DTA: Differential Thermal Analysis The reference substance and the sample are heated simultaneously, and the temperature difference between the two is measured by a thermocouple and recorded continuously. From the changes in temperature difference, the presence of thermal changes and the type of reactions can be determined.

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Applications/Examples of results

[TG-DTA] Organic substances, resins, adhesives, glues, biomacromolecules, etc.: Evaluation of melting point, thermal decomposition temperature, and combustion temperature is possible. Metals: Evaluation of melting point is possible. Rubber, battery materials, etc.: Estimation of the ratio of organic and inorganic substances is possible. [TG-DTA-MS] Organic substances, resins, adhesives, glues, biomacromolecules, etc.: Component analysis during thermal decomposition and combustion is possible.