Thermogravimetric & Differential Thermal Analysis (TG-DTA)

Thermal analysis (TA) involves measuring specific physical and chemical properties as a function of temperature. These properties primarily include enthalpy, heat capacity, mass, and the coefficient of thermal expansion. A simple example of thermal analysis (TA) is determining the coefficient of thermal expansion in metal bars. Another example is measuring the weight changes of oxysalts or hydrates as they decompose under heat. TA has a wide range of applications in solid-state science, including the study of solid-state reactions, thermal decompositions, phase transitions, and the construction of phase diagrams. Most solids exhibit some form of thermal activity, making them suitable for investigation through TA. The primary TA techniques are thermogravimetry (TGA) and differential thermal analysis (DTA). TGA measures the mass of a sample as a function of temperature or time, while DTA detects changes in heat content by measuring the temperature difference (ΔT) between a sample and an inert reference material as a function of temperature. In a nutshell, Thermogravimetric (TG) and Differential Thermal Analysis (TG-DTA) are thermal analysis techniques that measure how the physical and chemical properties of materials change as a function of temperature or time under controlled conditions. Thermogravimetric Analysis (TGA) and Differential Thermal Analysis (DTA) both are complementary thermal analysis techniques commonly used in material science, polymer analysis and chemistry to characterize materials' thermal stability, phase transitions, decomposition, and other thermal properties.