TTT Diagram: Application of Temperature-Modulated DSC

The aim of the application is to show how temperature-modulated DSC can be used to measure the heat capacity during a reaction. In a conventional DSC measurement the heat capacity would be overlapped by the reaction peak.
Since vitrification is a chemically induced glass transition, a change in heat capacity is to be expected during the reaction. Vitrification times can be directly measured by temperature modulated DSC and the data used to construct a TTT diagram. ADSC and TOPEM^® measurements are suitable for this purpose. In the example shown, the ADSC technique was used (see also Section 4.2.4.2).

^{TTT diagram: Application of temperature-modulated DSC | Thermal Analysis Application No. HB 47 | Application published in METTLER TOLEDO TA Application Handbook Thermosets Volume2}