PHYSICAL PROPERTIES OF AROMATIC HYDROCARBONS .4. AN ANALYSIS OF TEMPERATURE DEPENDENCE OF VISCOSITY AND COMPLIANCE OF 1,3,5 TRI-ALPHA-NAPHTHYLBENZENE

The viscosity measurements on 1,3,5-tri-α-naphthylbenzene have been extended to 407°C, in order to establish the limiting high-temperature Arrhenius activation energy. Diverse functions have been used to fit the viscosity results on this material which range over 15 orders of magnitude. From, the temperature dependence of viscosity and crystal-growth rate in the transport-controlled temperature region below the growth-rate maximum, a temperature dependence of the limiting high-frequency modulus (for the dominant viscoelastic relaxation process) is predicted.