Development of the light heating dynamic DSC

The dynamic DSC is a recently developed technique for simultaneous measurement of DSC and AC calorimetry (ACC). Thermal information which cannot be obtained by DSC or ACC alone can be obtained by comparing the results of DSC and ACC. Commercial apparatus are not always suitable for such comparison because of the low frequency and the large amplitude of the sinusoidal modulation. In this study the light heating technique used in ACC was employed to generate the sinusoidal modulation. The frequency and the amplitude achieved were, respectively, ten times and one-tenth those of the commercial apparatus. Results obtained from polyethylene by light heating dynamic DSC are presented.