Differential Scanning Calorimetry, commonly known as DSC, is a thermo-analytical technique for polymeric and non-metallic materials. Most commonly used for detecting glass transition temperature and other thermal properties, differential scanning calorimetry is one of the most efficient and cost-effective polymer test methods available.
Differential Scanning Calorimetry Testing
DSC testing has been used for decades as a way to predict the behaviors of polymeric materials under different thermal conditions. Like all calorimeters, this technique tracks the amount of energy required to increase the temperature of a material by a certain amount. By making accurate measurements of heat capacity and temperature, differential scanning calorimetry can detect changes in material properties at exact temperatures, revealing important transition ranges and deterioration points.
How is DSC Testing Performed?
To perform DSC testing, a small amount of material is heated at a predetermined rate. The energy required to heat the sample is compared to an inert reference material at the same temperature. If the sample under test requires more energy compared to the reference, it is indicated as an endotherm. The peak of an endotherm indicated melting temperature. When less energy is required to heat the sample as compared to the inert reference, an exothermic peak is observed. This may indicate a chemical reaction such as curing is taking place.
Element Advantage in Differential Scanning Calorimetry
Element performs DSC testing in laboratories across the US and Europe. Our polymer testing experts have years of experience across a variety of industries, and can help you overcome the unique challenges inherent with non-metallic materials. Contact an expert today to let us know how we can make your next project a success.
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Considerations for Glass Transition Temperature
Element offers a variety of methods for determining glass transition temperature and other important polymeric characteristics
Thermal Analysis (DSC, TMA, DMA, TGA)
Thermal analysis methods measure mechanical changes under differing temperatures and loads, and can pinpoint when and at what temperature significant thermal events occur.
Thermomechanical Analysis (TMA)
TMA provides data on thermal properties by contacting the specimen with a quartz probe to measure CTE and Tg.
Dynamic Mechanical Analysis (DMA)
DMA determines thermal-mechanical properties, such as glass transitions (Tg), by measuring the complex moduli and viscoelastic behavior of materials as a function of cyclic load and temperature.