SIMULATION OF TEMPERATURE MODULATED DSC OF TEMPERATURE-DEPENDENT HEAT-CAPACITY

Mathematical analysis can be applied to elucidate dynamic steady state in temperature modulated DSC, because it is a linear process, and its results were reported previously, but it was done on assumption of co nstant heat capacity. In real measurement the heat capacity is not con stant instead it is dependent on the temperature. To elucidate thermal response during heat capacity change, computer simulation has been ap plied. Two cases have been simulated: heat capacity with linear temper ature dependence and ramp change of heat capacity like a glass transit ion. The results are reported in this paper in relation to additional errors due to this temperature dependence. (C) 1997 Elsevier Science B .V.