During TGA, the sample mass taken for the analysis may lead to a shift in the operating temperature. How did you overcome this problem while calculating the weight loss of the Nano-composites?
Shashi... There is an often increase of temperature within the sample after each exothermic change in the sample. The higher the sample mass, the greater will be the change in the real temperature of the sample. Modern instruments with greater precision uses small sample masses to compensate to the variation of sample temperature compared with the furnace temperature. Further, slower heating rate may be another important parameter to help in solving this change.... Good luck
Check if the recorded temperature at the TGA plot is taken from the reference pan, or from the sample pan. If taken from the sample pan; the temperature can deviate from that of the reference pan; either due to heat absorption by the sample during an endothermic process, or due to heat released due to exothermic process. It may help to check the TGA plot vs. elapsed time.
Hi Shashi, I confirm the answer of Mahmood M. Barbooti, thats exactly correct..
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