Is curve analysis of DTG more important in TGA?

We can't say that DTG curve analysis is more important, only TG curve and DTG curve.

TG curve is the curve of sample quality changing with temperature and time in thermogravimetric analysis of materials! It can intuitively see the stage, trend and quantity of quality change!

DTG curve, simply put, is a curve that differentiates the TG curve by the first order, reflecting the rate relationship of mass change with temperature and time!

DTG curve analysis is very important, but it can't be said to be more important.

The importance of DTG curve lies in:

1- can accurately reflect the initial reaction temperature ti of thermogravimetric curve (the extrapolated starting point of DTG curve is closer to the real reaction starting temperature), the maximum reaction rate temperature te (i.e. the peak temperature of DTG) and the reaction end point TF (the extrapolated end point of DTG curve is closer to the real reaction end point temperature);

2- continuous thermogravimetric changes can be distinguished more clearly, which is more clear and accurate than TG curve.

The peak area of 3- DTG curve accurately corresponds to the changing sample weight, which can be used for quantitative analysis more accurately than TG curve.

The data of 4- reaction rate (dw/dt) can be conveniently provided for the calculation of reaction kinetics. This is obvious.