Diagnosis of phase shift in a temperature-modulated calorimetric method

In a temperature-modulated calorimetric method using the same apparatus as a standard differential scanning calorimeter, we have to pay attention to t he thermophysical parameters of the apparatus, which cause phase shift in a c temperatures, such as heat capacity of base plate, heat capacity of a pan , thermal conductance between a heater and base plate, and thermal conducta nce between a pan and base plate. We performed the analysis of the thermal system oi the apparatus with these parameters. Beside the theoretical consi deration, we carried out heat capacity measurement in a wide range of modul ation periods. We found that the experimental results were well-expressed i n terms of these thermophysical parameters.