Abstract
Abstract Measurements of density, ρ, viscosity, η, and electrical conductance, Λ, in glass-forming molten mixtures of manganese(II) chloride-tetrabutylammonium bromide were made as functions of temperature and composition. The non-Arrhenius temperature dependence of transport properties has been discussed in terms of equations based on the free-volume model. Composition dependence of viscosities has been explained satisfactorily through a parabolic equation, η=p+qN+rN2+sN3, where p, q, r, and s are the empirical parameters and N is the mole fraction of the solute. The minimum in the viscosity isotherms has been observed at N=−q⁄2r. A better applicability of isoenergic equation, Y(=φorΛ)=(A0Y−Q1YN)c−1⁄2(T0(0)+(Q2N)−1⁄2exp[−k1Y⁄(T0(0)+Q2N)(c−1)] over an isothermal equation (both based upon free volume model) in explaining the transport process in all the glass-forming melts has been emphasized.
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