Thermal Analysis

Figures from top to bottom: FIG 1. Typical DSC signals.
FIG 2. Combined TGA (top) and DSC (bottom) signals.
FIG 3. Combined TGA and EGA signals

MCL's thermal analysis suite of characterization capabilities includes three techniques: Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC) and Evolved Gas Analysis (EGA) via a TGA coupled to a Mass Spectrometer. The data obtained by these techniques and applications examples are shown in the table below.  

Technique Data Obtained Applications

TGA Weight loss/gain in mg and %

Temperature of weight change transition

Thermal and Oxidative Stability of Materials • Composition of Multi-component Systems •The Effect of Reactive or Corrosive Atmospheres on Materials •Moisture and Volatiles Content of Materials

DSC Heat flow changes with temperature Melting and Crystallization temperatures • Glass transition temperature (amorphous materials) • “cold” crystallization • Heat capacity • Cure kinetics • Crystalline content

EGA Composition of gasses (m/z) evolved
as temperature increases
Identification of individual degradation products, residual solvents and contamination • By-product analysis • Reaction elucidation, stoichiometry

The following thermal instruments are available at MCL:  

  • Discovery TGA 5500 coupled with Discovery MS (TA Instruments)  

  • DSC Q2000 (TA Instruments) 

  • STA 449 F3 Jupiter (Netzsch)

Major Specification:

Instrument Discovery TGA-MS​ TA Q2000 DSC​ STA 449 F3

Technique TGA and EGA Dedicated DSC Simultaneous TGA and DSC

Temp. Range (°C) 25 to 1000 -90 to 400 25 to 1550

Sample crucible type (and volume, µL) Alumina (250) Platinum (100) Aluminum (80) Aluminum​; T-zero hermetic and non-hermetic Alumina (85) Platinum (85)

Sample crucible dimensions (mm), diam. x height 7.8 x 4.3 (Al2O3)
9.0 x 1.5 (Pt)
5.7 x 2.8​ (sealed Al)
5.0 x 2.2​ 6.8 x 4 (Al2O3)
6.5 x 2.6 (Pt)

Typical sample size (mg) 2-50 1-10 5-30 (sample carrier dependent

Additional features Evolved gas atomic mass range​
1-300 amu
RCS 90 cooling system; controlled cooling rate​ Vacuum system: <10