Thermodynamic properties of polyethylene

Abstract

Abstract The entropy, enthalpy, and GIBBS' free energy of conventional high pressure polyethylene have been calculated over the range 0 to 315°K. The use of a linear TARASSOV function to estimate the specific heat of polyethylene is discussed. The thermodynamic function C p /T versus T was calculated and exhibits an increase at 60°K. due to interactions between polymer chains. An approximation is made of the number of vibrating units per repeating unit at 273°K. C p C v is calculated at 273°K. and found to be 0.082 cal./deg. g.