Thermogravimetric Differential Scanning Calorimetry (TG) is an advanced analytical technique that combines the principles of thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) to provide comprehensive information about the thermal properties of materials.
TG measures the mass change of a sample as a function of temperature, while DSC measures the heat flow into or out of the sample during the temperature change. By combining these two techniques, TG/DSC can provide insights into:
- Moisture content
- Thermal stability
- Phase transitions
- Chemical reactions
How to do Moisture Analysis Using TG/DSC
Moisture analysis using TG/DSC involves the following steps:
- Sample preparation: The sample is weighed and placed in a crucible.
- Temperature programming: The sample is heated at a controlled rate in an inert atmosphere.
- Data collection: The TG and DSC curves are recorded throughout the heating process.
The TG curve shows the mass change as a function of temperature, while the DSC curve shows the heat flow into or out of the sample. The moisture content can be determined from the TG curve by identifying the mass loss region, which corresponds to the evaporation of water from the sample.
TG/DSC is a powerful tool for moisture analysis and other thermal characterization applications. It provides accurate and reliable results that can be used to optimize processes and ensure product quality.