I read it
Convert the y-axis from mass loss to degree of conversion (100-x)%.
What if tga analysis have residual char, for example at mass loss% 27%
Is it the same eqation to get conversion degree alph or change to be ( 100- mass loss)/(100- minimum mass loss) ?
Hi Mohamed Koraiem ,
I am not fully sure about your question, but this might be useful:
To convert mass loss (that means milligrams of sample), to % loss, you need to find the highest mass value in your set of data, and consider this one as 100%. With that in mind, you can modify all the other values to %. That will lend you a graph that relates %mass of sample (in y axis) vs temperature (in x axis).
If a chemical reaction is happening to that sample, then you can begin with the definition of conversion:
X = (number of moles at zero time - number of moles at "t" time)/(number of moles at zero time).
In this case, you will need the molecular weight of your sample to transform moles to mass values.
Hope it helps!
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