Why does the DSC curve decrease over time?

21 February 2025 1 3K Report

Is it normal that my DSC curve of polypropylene shows a gradual downward trend over time without leveling off at the baselines? Can anyone explain the reason for this? Below is the measurement result file of the graph.

Petr Lepcio

Hi,

DSC baseline usually has a downward trend due to heat capacity being a function of temperature.

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