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Technical Concept

Thermogravimetric Analysis or Thermal Gravim Analysis (TGA) is a method of thermal analysis in which changes in physical and chemical properties of materials are measured as a function of increasing temperature (with constant heating rate), or as a function of time (with constant temperature and/or constant mass loss).


TGA can provide information about physical phenomena, such as second-order phase transitions, including vaporization, sublimation, absorption, adsorption, and desorption. Likewise, TGA can provide information about chemical phenomena including chemisorptions, desolvation (especially dehydration), decomposition, and solid-gas reactions (e.g., oxidation or reduction).


TGA is commonly used to determine selected characteristics of materials that exhibit either mass loss or gain due to decomposition, oxidation, or loss of volatiles (such as moisture).





Common applications of TGA as listing may be useful for corroborating predicted material structures or simply used as a chemical analysis.

  1. Materials characterization through analysis of characteristic decomposition patterns
  2. Studies of degradation mechanisms and reaction kinetics
  3. Determination of organic content in a sample
  4. Determination of inorganic (e.g. ash) content in a sample


It is an especially useful technique for the study of polymeric materials, including thermoplastics, thermosets, elastomers, composites, plastic films, fibers, coatings, and paints. (wiki)


TGA trace of surface modified CaCO3 nanoparticles.





TGA, Netzsch TG 209 F3 Tarsus





Taiwan Lab

Mr. Chung

: +886-3-6116678 ext:3275

: +886-983-495-663

: ms@ma-tek.com