[Analysis Case] Analysis of the Thermal Decomposition Behavior of Polyimide (TG-MS)

I will introduce a case that analyzed the thermal decomposition behavior of polyimide.

The TG-MS (Thermogravimetric-Mass Spectrometry) method introduces gases generated during the TG-DTA (Thermogravimetric Differential Thermal Analysis) measurement of a sample online to an MS (Mass Spectrometer) for analysis. This technique allows for the acquisition of information regarding the thermal decomposition behavior of the sample, the types of gases generated, and the temperature ranges at which these gases are produced. Additionally, by using the sample observation function, changes in the shape and color of the sample during heating can be observed in real time. **[Analyzed Sample]** Polyimide (PI) film **[Analytical Equipment]** TG-DTA: Rigaku Thermo plus EVO2 GC-MS: Agilent 8890GC/5977B Inert Plus **[Analysis Results]** A weight loss of the PI film was observed around 540°C, accompanied by the detection of CO, CO2, and decomposition components such as Phenol and Benzonitrile. Furthermore, the sample observation images showed that the PI film gradually changed from orange to brown and then to black, and shrinkage was also observed starting around 522°C. **[Summary]** The TG-MS method allows for understanding the types of gases generated and the weight loss behavior of the sample during heating.

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