Thermogravimetric Analysis (TGA) / Differential Thermal Analysis (DTA)
Thermal Analysis (TGA, DTA and DSC) detects the inter-atomic and inter-/intra- molecular interactions as related to an imposed external change in temperature. It is essential for investigating physical properties of materials throughout their entire life cycle (R&D, production control and failure analysis).
- Thermogravimetric Analysis (TGA) measures the mass change of a material as a function of temperature and time, in a controlled atmosphere. It is ideally used to assess volatile content, thermal stability, degradation characteristics, aging/lifetime breakdown, sintering behavior and reaction kinetics.
- Differential Scanning Calorimetry (DSC) measures the heat flow associated with phase transitions or reactions, such as melting, crystallization, solid phase transition, glass transition, curing, sorption, etc.. It is ideally used to determinine melting point, glass transition temperature, crystallinity, degree of curing, heat capacity, crystalline impurities, etc..
- Differential Thermal Analysis (DTA) measures the temperature difference of the sample versus a reference, caused by thermal events in a material. It provides similar information to DSC. DTA usually complements TGA with phase transition information.
- Thermal stability/degradation
- Aging/lifetime assessment
- Phase transition deteemination (e.g. glass transition, melting point, heat of fusion, crystallinity, heat capacity)
- Formulation/deformulation of organic/inorganic mixtures (e.g., ink, paste, polymer composites)
- Loss on drying/loss on ignition
- Degree of curing (e.g., adhesives, thermosetting resins)
- Reaction kinetics (e.g., oxidation, hydrogenation, sorption)
- Pyrolysis/sintering behavior
Signal Detected: Mass change, temperature and heat flow
Measurement Range: 0.1-200mg; 20-1500°C
- Provides rich information on the mobility, bonding and interaction of atoms and molecules, in particular when elemental composition and bonding information are also available
- All types of solids can be analyzed, with minimal sample preparation (e.g. powders, pellets, chunks, flakes)
- Minimum sample size (100ng or more)
- Qualitative or quantitative analysis
- Solid (or initially solid) samples only
- Data interpretation not always straightforward.
- Most useful in combination with other techniques such as FT-IR, Raman, XRD, IGA, ICP-OES/MS and GDMS.
- Chemicals / Petroleum / Polymers
- Renewable Energy (Solar, Battery, Biofuel, etc)
- Pharmaceutical / medical
- Construction materials
- Optical components
- EAGLABS Bubble Chart: Analytical Resolution versus Detection Limit BR004
- Materials Characterization Brochure
- PV Materials Characterization for CIGS BR053
- Materials Characterization for Lithium Ion Battery Technology BR057
- Typical Applications for Techniques / Periodic Table of Elements BR038
- EAG Services Introduction BR011