Heat capacity of polyisobutylene from 0 to 380 K

作者：George T. Furukawa, Martin L. Reilly · 发表于：Journal of research of the National Bureau of Standards · 年份：1956 · DOI：10.6028/jres.056.036 · 被引用次数：39 · 研究领域：Phase Equilibria and Thermodynamics、Adsorption, diffusion, and thermodynamic properties of materials、Chemical Thermodynamics and Molecular Structure

Measurements of t h e h eat capacity of polyisobutylene of the viscosity average molec ular weight of l.35 X 106 were made from about 14 0 to 380 0 K by means of an adiabatic calorimeter .The glass-transformat ion temperature was estimated to be 199 0 K.The values of the heat capacity above the glass-transformation temperat ure can be represented wi t hin ± 0.2 percent by C(abs j deg-1 g-t) = 0.844 + 3.03 X 10-3 T + 2.24 X 10-6 '1'2.The data were used t o obtain smoothed values of heat capacity, ent halpy, entropy, and Gibbs free energy from 0 0 to 380 0 K .