ABSTRACT
This chapter focuses on the analysis of the relationship between the dielectric relaxation time and the melt viscosity for a series of diglycidyl ether of bisphenol-A oligomers with different molecular weights. Generally, the dielectric relaxation time is said to be proportional to the melt viscosity for a simple liquid whose dielectric a-relaxation is governed by the Debye model. Utracki and Ghijsels analyzed the melt viscosity for several epoxide oligomers according to the equation that combined Doolittle’s empirical formula with the statistical thermodynamics theory of a liquid. The temperature dependence of the melt viscosity for each oligomer was evaluated and was compared to both the dielectric relaxation time and the dc conductivity.
