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Abstract
In the present work, the temperature dependence of the molar heat capacity of a partially crystalline poly(1-(hydroxyimino)trimethylene) has been measured over the range of T = (6–500) K using a precise automated adiabatic calorimeter and a heat-flux differential scanning calorimeter. In the above temperature interval, the glass transition has been detected, and the standard thermodynamic characteristics of polyoxime have been determined and analysed. The standard thermodynamic functions of the studied polyoxime, namely, the heat capacity Cpo(T), the enthalpy [H°(T) − H°(0)], the entropy [S°(T) − S°(0)], and the potential Φ°(T) have been calculated for the range from T → (0 to 400) K based on the experimental data. The standard thermodynamic properties of poly(1-(hydroxyimino)trimethylene) have been discussed and compared with the previously studied alternating polyketone (copolymer of ethylene C2H4 and carbon monoxide CO).
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