Abstract
Size dependences of the surface tension of spherical single-component droplets are calculated using equations of the lattice gas model for 19 compounds. Parameters of the model are found from experimental data on the surface tension of these compounds for a macroscopic planar surface. The chosen low-molecular compounds satisfy the law of corresponding states. To improve agreement with the experimental data, Lennard-Jones potential parameters are varied within 10% deviations. The surface tensions of different sized equilibrium droplets are calculated at elevated and lowered temperatures. It is found that the surface tension of droplets grows monotonically as the droplet size increases from zero to its bulk value. The droplet size R 0 corresponding to zero surface tension corresponds to the critical size of the emergence of a new phase. The critical droplet sizes in the new phase of the considered compounds are estimated for the first time.
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Original Russian Text © Yu.K. Tovbin, E.S. Zaitseva, A.B. Rabinovich, 2017, published in Zhurnal Fizicheskoi Khimii, 2017, Vol. 91, No. 10, pp. 1730–1739.
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Tovbin, Y.K., Zaitseva, E.S. & Rabinovich, A.B. Surface tension of different sized single-component droplets, according to macroscopic data obtained using the lattice gas model and the critical droplet size during phase formation. Russ. J. Phys. Chem. 91, 1957–1965 (2017). https://doi.org/10.1134/S0036024417100399
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DOI: https://doi.org/10.1134/S0036024417100399