Thermal Analysis

Thermal Analysis

is essential for characterizing any material that has properties affected by temperature.  In fact, materials have a “fingerprint” that can be identified with a thermal curve.

Performing temperature programmed studies leads to a detailed understanding of how thermal conditions affect stability, degradation, composition, phase change, and even reaction kinetics.

In addition to temperature studies via chemisorption techniques, PTA utilizes thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), which apply to a wide range of materials and applications.  These techniques also require a minimal sample size (less than 50 mg).

Thermogravimetric Analysis (TGA)

is a technique utilizing a highly sensitive balance to measure a sample’s change in weight within a programmed time, temperature, and gas environment.

Applications:

  • Thermal Stability
  • Degradation Onset Temperature and Rate
  • Reaction Onset Temperature and Rate
  • Volatile Composition
  • Residual Composition
  • Polymer Composition
  • Carbon Black Content of a Master Batch

Decomposition of Calcium Oxalate Monohydrate by TGA
Various Thermal Transitions Measured by DSC

Differential Scanning Calorimetry (DSC)

is a technique which measures heat flow into or out of a material based on a controlled thermal profile.  These measurements can provide both qualitative and quantitative information about physical and chemical changers that include endothermic and exothermic process or changes in heat capacity.

Applications:

  • Phase Change Temperatures
  • Phase Change Energy
  • Heats of Fusion or Reaction
  • Specific Heat
  • Glass Transition Temperature
  • Crystallization Point
  • Epoxy Residual Cure/Cure Cycle Effectiveness

  • Polymer/Plastic Composition
  • Oxidation Induction Time
  • Thermal History of Polymers
  • Thermal Stability
  • Moisture Content
  • Eutectic Purity
  • Polymorph Analysis
  • Reaction Kinetics

Particle Testing Authority can help your characterization needs by providing fast, reliable results with informed interpretation.