Differential Scanning Calorimeter (DSC) from TA Inst. Co., measures the difference in heat absorbed or released by sample, as compared to an inert refference (empty pan), as both are heated, cooled or held at constant temperature (isothermal). Exothermic transitions result in the release of heat: crystallization, curing, decomposition, etc. Endothermic transitions absorb heat: melting, glass transition, evaporation, etc. DSC 2500 using the Tzero technique provides significant improvements in baseline flatness, transition, resolution and sensitivity.

Equipment
Instrument: TA Instruments DSC 2500 with 50 position autosampler. Sensitivity < 0.2 µW, and baseline drift < 10 µW.

Temperature: Using liquid nitrogen (LN2) pump, temperature range from –150 °C to 400 °C at 10C/min.
Using Refrigerated Cooling System (RCS120), from -50C to 400C at 10C/min.
Please check manual for temperature range vs. ramp rate.

Calibration: Indium. Sapphire was used for heat capacity constant.