Thermodynamic properties of 1,2,3-poly(trichlorobutadiene) in the 0-340 K range

For 1,2,3-poly(trichlorobutadiene), the heat capacity in the 7-340 K range was studied by adiabatic vacuum calorimetry with an error of similar to0.2%. The relaxation transitions occurring in this polymer in the 200-340 K range were revealed, and their thermodynamic characteristics were determined; the thermodynamic functions C(p)degrees (T), Hdegrees(T) - Hdegrees(0), Sdegrees(T), and Gdegrees(T) - Hdegrees(0) for the range 0-340 K, as well as the standard entropy of polymer formation from simple substances at 298.15 KDeltaS(f)degrees, were calculated. The experimental results were compared with the corresponding literature data for isomeric 1, 1,2-poly(trichlorobutadiene) and 1,4-polybutadiene.