Abstract
The changes in specific heat capacity (C p) of a polycarbonate/acrylonitrile–butadiene–styrene (PC/ABS) blend subjected to aging have been determined using modulated differential scanning calorimetry (MDSC). MDSC experiments were conducted before and after hygrothermal conditioning of specimens under 9 different aging conditions. The effects of the two factors, hygrothermal conditions and scanning temperature, on material C p have been determined by statistical method of analysis of variance. Linear curves were fitted to experimental values of C p for the range of initial temperature of 24 °C (room temperature) up to 80 °C (glassy region of the material). The obtained linear relationship can be used to model heat transfer of PC/ABS materials exposed to physical aging and hygrothermal conditions. C p values were found to be independent of moisture content in conditioned samples within the range of conditions studied.
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