TGA

Thermogravimetric Analysis

Thermogravimetric (TGA) analysis provides determination of weight loss on heating. Materials analyzed by TGA include polymers, plastics, composites, laminates, adhesives, food, coatings, pharmaceuticals, organic materials, rubber, petroleum, and biological samples.

TGA materials analysis:

Thermogravimetric analysis uses heat to force reactions and physical changes in materials. TGA provides quantitative measurement of mass change in materials associated with thermal degradation. TGA records change in mass from dehydration, decomposition, and oxidation of a sample with time and temperature. Characteristic thermogravimetric curves are given for specific materials and chemical compounds, occurring over specific temperature ranges and heating rates. These unique characteristics are related to the molecular structure of the sample.

Scope:

Thermogravimetric Analysis measures the percent weight loss of a test sample while the sample is heated at a predetermined rate in an inert (N2), or oxidative (air) environment. The loss in weight over specific temperature ranges provides an indication of the composition of the sample, including volatiles and inert filler, as well as indications of thermal stability.

Data:

A plot of percent weight loss versus temperature. The derivative of the weight loss with respect to temperature may assist with determining transition boundaries.

TGA thermogravimetric capabilities:

  • Compositional analysis of materials
  • Decomposition temperatures
  • Rate of degradation
  • Product lifetimes
  • Oxidative stability
  • Thermal stability
  • Moisture Content
  • Competitive product evaluation
  • Measurement of amount of oil in elastomers
  • Determination of inert filler or ash contents