Glassy Carbon low-temperature thermodynamic properties

Abstract

The heat capacity of Glassy Carbon was measured by adiabatic calorimetry from 5 to 350 K and has no transitions or thermal anomalies. It parallels that of pyrolytic graphite annealed at 2600 [deg]C in showing an approximate T2 dependence up to 30 K suggesting that the structure of this material may involve microdomains of lamellar graphite. At 298.15 K, the measured heat capacity at constant pressure (Cp), the entropy (So - S0o), and the enthalpy function }(Ho - H0o)/T{ are 2.055, 1.406, and 0.857 cal K-1 mol-1.