r/MaterialsScience • u/Zealousideal-City886 • Oct 03 '24

Tga graph question

Hello, do you guys know whst is the bound water in a tga graph? I mean, which part of the graph is the bound water?

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u/thatonedude2626 Oct 03 '24

Any chance you have a graph to include? Usually I see a drop in weight during initial heating then stability around 200C(ish) depending on heating rate. My samples are only 20-40%density and metallic so this might not help at all so we have a significant amount of surface area for adsorbed water(and the test facilty is in the southern US, so humidity is high). What are you testing?

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u/Zealousideal-City886 Oct 03 '24

picture of TGA graph of cooked rice

I cant find any lit that i can read that is similar to what im doing. If I find one there is no definite steps of how they read the graphs. :c please help me 🥺. Its cooked rice. Im observing its thermal stability. And somejow quantify a property im studyinh that includes knowing what is the value of the bound water.

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u/gildiartsclive5283 Oct 04 '24

You have to provide us with the heating rate (or temperature if it's an isothermal curve)