Abstract

Investigation of the dynamic viscoelastic properties of liquids by acoustic methods is one of the direct approaches to a study of the nature and character of reorganization of the intermolecular structure occurring in them. The main structural characteristic of a liquid is the relaxation period – the time of transition from a nonequilibrium to an equilibrium state. In the Frenkel theory of liquid [1], the relaxation period is estimated (from the self-diffusion rate) by equating this period to the dwelling time of individual molecules; for low-viscosity liquids, it is equal to 10

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