Differential thermal analysis (DTA) is a thermoanalytic technique that is similar to differential scanning calorimetry. In DTA, the material under study and an inert reference are made to undergo identical thermal cycles, (i.e., same cooling or heating programme) while recording any temperature difference between sample and reference. [ 1 ]

Graph (a) shows the temperature change of the furnace, the reference and the sample against time. Graph (b) shows the change in temperature difference (ΔT) against time detected with the differential thermocouple. ΔT signal is referred to as the DTA signal.

2023年1月24日 · Differential thermal analysis (DTA) and differential scanning calorimetry (DSC) are similar methods in which the response of a sample and a reference to a change in temperature.

2024年7月23日 · A plot of the differential temperature, ΔT, versus the programmed temperature, T, indicates the transition temperature(s) and whether the transition is exothermic or endothermic. DTA and thermogravimetric analyses (measurement of the change in weight as a function of temperature) are often run simultaneously on a single sample.

2022年8月28日 · Thermogravimetric analysis (TGA) and the associated differential thermal analysis (DTA) are widely used for the characterization of both as-synthesized and side-wall functionalized single walled carbon nanotubes (SWNTs). Under oxygen, SWNTs will pyrolyze leaving any inorganic residue behind.

Thermogravimetry Differential Thermal Analysis or TG/DTA is a simultaneous thermal analyzer that can characterize multiple thermal properties of a sample in a single experiment. The TG component measures temperatures where decomposition, reduction or oxidation occurs.

DTA is a thermoanalytical technique in which the material under consideration and a reference sample must be subjected to the same thermal cycles (having the same heating or cooling program), while also recording any temperature difference between them.

2022年8月30日 · The DTA thermogram can be developed by plotting the difference (ΔT) between the test sample and the reference material (ΔT = TR – TS) as a function of furnace temperature. The calorimetric DTA instrument is the second type of DTA instrument, and it uses two pans stored on different heating blocks for the sample and reference materials ...

Curve obtained from DTA can be used for identification purposes as a fingerprint of material. As an example, DTA can be used to study the point when structural resemblance of different forms of clay complicates the interpretation of diffraction patterns. Area under DTA peaks gives enthalpy change of the sample.

A DTA plot or thermal curve has DT on the y-axis and T (or time) on the x-axis. The x-axis temperature can be the temperature of the heating block, the temperature of the sample or the temperature of the reference, or it can be time.