Posted in | Thermal Analysis

TOPEM – An Advanced Temperature-Modulated DSC Technique

From Jun 27 2018

Temperature-Modulated DSC

METTLER TOLEDO offers three different techniques for performing temperature-modulated DSC measurements. They are known as IsoStep, ADSC and TOPEM®.

Temperature-Modulated DSC

The TOPEM webinar offered by METTLER TOLDO explains why temperature-modulated DSC (TMDSC) is so useful. An overview of various temperature-modulated DSC techniques is presented before going into more detail about the most advance technique – TOPEM. The webinar also discusses several examples that illustrate the kind of questions TOPEM can answer.

Theory of TMDSC

A temperature-modulated DSC experiment yields reversing and non-reversing heat flows. Under quasi-static conditions, such as exist in an ideal IsoStep experiment, the reversing heat flow corresponds to the sensible heat flow, and the non-reversing heat flow to the latent heat flow.

In an ADSC experiment, modulation occurs at a particular frequency. In this case, the statements “reversing heat flow equals sensible heat flow” and “non-reversing heat flow equals latent heat flow” are not generally valid.

TOPEM has a tremendous advantage: it allows you to distinguish between latent and sensible heat flows and at the same time investigate the frequency dependence and hence the dynamics of processes. To understand how this is possible, this webinar takes a closer look at the principles on which TOPEM is based, supported by real application examples.

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