Abstract
A method is described which enables the direct measurement of relaxation times and relaxed and nonrelaxed heat capacities as a function of temperature. The apparatus designed is to be used as additional equipment to the Perkin-Elmer differential scanning calorimeter DSC-1B. The specimen is heated periodically with time instead of proportionally. The amount and phase of differential heat flow are measured. The parameters of an 'equivalent circuit' of a heat capacity model are fitted to the measured complex Cp values obtained at various frequencies and appropriate amplitudes of temperature. Further applications of the 'oscillating thermal analysis' are proposed.
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