/ DSC

DIFFERENTIAL SCANNING CALORIMETRY

During a DSC analysis, the sample and a reference material are heated-up and the amount of energy required is compared. In other words, the heat flux is compared as a function of temperature.  In order to avoid reactions between the samples and the atmosphere, DSC analyses are generally performed with inert gases (nitrogen or argon).

DSC can help study thermal transitions in materials and determine the glass transition temperature, the crystallization temperature or the the melting point.

Uses

-Characterization of organic compounds

-Identification of polymers

-Alloy characterization  (intermetallics, shape memory alloys)

 

 

Advantages:

-Common and inexpensive
-Only a very small amount of material is needed
-Large temperature range (-180 to 500o C)

Désavantages:

-Data interpretation is more complex than for TGA
-Limited information on the chemical composition

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