08.09.2018 by Dr. Alexander Schindler

Smart Thermal Analysis (Part I): Automatic Evaluation of DSC, TGA and STA Measurements

AutoEvaluation by NETZSCH is a very helpful tool for evaluation of thermoanalytical measurements. The entire measurement is evaluated by AutoEvaluation automatically and autonomously (not via pre-defined macro!) – with only one mouse click – and just within a second. AutoEvaluation is available for DSC, TGA and now also for STA measurements. Furthermore, the adaptability of AutoEvaluation is adressed.

AutoEvaluation by NETZSCH is a very helpful tool for evaluation of thermoanalytical measurements. The entire measurement is evaluated by AutoEvaluation automatically and autonomously (not via pre-defined macro!) – with only one mouseclick – and just within a second. This saves a lot of valuable time! Moreover, evaluations from AutoEvaluation are user-independent. AutoEvaluation is clearly supporting beginners but also gives a second opinion for experts. In any case, AutoEvaluation makes thermal analysis smarter!

Glass Transition TemperatureThe glass transition is one of the most important properties of amorphous and semi-crystalline materials, e.g., inorganic glasses, amorphous metals, polymers, pharmaceuticals and food ingredients, etc., and describes the temperature region where the mechanical properties of the materials change from hard and brittle to more soft, deformable or rubbery.Glass transitions, CrystallizationCrystallization is the physical process of hardening during the formation and growth of crystals. During this process, heat of crystallization is released.crystallization and melting peaks observed in DSC measurements of polymers are evaluated automatically. Furthermore, melting peaks of metals and other, e.g., calibration materials can be evaluated. In case of TGA, all significant mass changes are evaluated and the DTG curve can be shown including peak temperatures already labeled –  everything with one click by AutoEvaluation. And AutoEvaluation can even be incorporated into measurement methods: In this case, the evaluations are done automatically right after the measurement finished!

Watch our video showing the use of AutoEvaluation (and also Identify):

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NETZSCH Proteus® Software: Autoevaluation and Identify

Watch our video highlighting the new functions “Endo and Exo” (especially for STA):

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NETZSCH Proteus® Software: Autoevaluation for DSC, TGA and STA

The new function for AutoEvaluation, called “Endo- and Exo Effects”, automatically evaluates any EndothermicA sample transition or a reaction is endothermic if heat is needed for the conversion.endothermic or ExothermicA sample transition or a reaction is exothermic if heat is generated.exothermic effects occurring in DSC curves. Independent of the sample material and independent of the instrument used (NETZSCH DSC 2xx, DSC 404 or STA 449).

Adaptability of AutoEvaluation:

Since several functions like “Polymer” or “Endo and Exo” exist, AutoEvaluation can be adapted to the particular application. Which evaluations done by AutoEvaluation should be displayed? And which properties of these evaluations (like peak area, onset temperature, …) should be shown? All this can be customized in Settings. Last but not least, the results of AutoEvaluation could be revised by the user – if desired.