Thermal Gravimetric Analysis (TGA)
TGA thermogravimetric capabilities:
- Compositional analysis of materials
- Decomposition temperatures
- Rate of degradation
- Product lifetimes
- Oxidative stability
- Evaluation of polymer flammabilities
- Thermal stabilities
- Determination of rancidity of edible oils
- Fingerprinting unknown polymers
- Moisture Content
- Volatile Organic Compounds (VOC) analysis
- Analysis of evolved gases using TGA/FTIR
- Competitive product evaluation
TGA measures the amount of weight change of a material, either as a function of increasing temperature, or isothermally as a function of time, in an atmosphere of nitrogen, helium, air, other gas.
Thermal gravimetric analysis can be interfaced with FTIR to identify the vapors generated.
Inorganic materials, metals, polymers and plastics, ceramics, glasses, and composite materials can be analyzed.
Temperature range from 25°C to 900°C routinely. The maximum temperature is 1000°C.
Sample weight can range from 1 mg to 40 mg. Sample weights of more than 25 mg are preferred, but excellent results are sometimes obtainable on 1 mg of material.
Weight change sensitivity of 0.01 mg.
Samples can be analyzed in the form of powder or small pieces so the interior sample temperature remains close to the measured gas temperature.