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Differential Scanning Calorimetry

What is differential scanning calorimetry analysis?

The Differential Scanning Calorimetry (DSC) is main techniques of thermal analysis. DSC detects endothermic and exothermic transitions like the determination of transformation temperatures and enthalpy of solids and liquids as a function of temperature.

In contrast to classic calorimetry, where a sample is put into an isolated chamber to monitor its heat uptake and release in an isothermal experiment, the differential scanning calorimetry is a dynamic procedure.

A typical calorimeter is an isolated chamber where a sample is placed in a surrounding medium. Then the sample is heated with a definite amount of heat. The difference in temperature between sample and surrounding medium gives the heat capacity of the sample and information about heat release and consumption of the sample. Besides that, the differential scanning technique uses a sample and reference that are facing the same conditions and their signal is directly subtracted from each other.

What is the difference between DTA and DSC?

The difference between DSC and DTA is: DSC measures heat flow difference and DTA measures temperature differences between a reference sample and a sample of interest.

What are the standards for differential scanning calorimetry?

  • DIN 53765
  • DIN 51007:2019-04
  • DIN EN 6041:2018-03
  • DIN EN 728
  • DIN EN ISO 11357-1, -2, -3, -4 and -6
  • ASTM E 126
  • ASTM E 1356