Simultaneous thermal analyzer-evolved

Figures 8.2 and 8.3 show stacked curves obtained by TG-Fourier transform infrared spectroscopy (FTIR) of KL measured in air and nitrogen. TG-FTIR measurements were carried out using a Seiko TG 220 themogravimeter equipped with a JASCO FTIR7000 spectrometer [44,45,49,50]. Sample mass was 10 mg and heating rate was 200°C/min. Airflow rate was controlled at 100 mL/min. The gases evolved during the thermal degradation of KL were simultaneously analyzed by FTIR. Spectra were recorded at 30-second intervals each spectrum is the average of 10 one-second scans. The spectral resolution was 1 cm...

The reaction processes of substances cannot be analyzed by simple DTA/DSC or TG when thermal transition and the mass change due to reaction overlap. If DTA/DSC or TG is coupled with an evolved gas detector (EGD) and/or evolved gas analyzer (EGA), the reaction process can clearly be detected. Among various thermal analysis coupled simultaneous techniques [56], DTA/DSC or TG coupled with EGD and/or EGA is extensively used. TA-EGD-EGA coupled... 

TG-FTIR was performed using a Seiko TG 220 instrument equipped with a JASCO FTIR 7000 spectrometer. TG measurements were carried out at a heating rate of 20 °C min. Nitrogen and air flow-rates were controlled at 100 ml min. The evolved gases during thermal degradation were simultaneously analyzed by FTIR. In order to obtain one spectrum, data of ten scans were accumulated at 1 s intervals. Each spectrum was recorded every 30 sec. The spectral resolution was 1 cm. ... 

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