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ESTIMATION OF THE FRACTAL DIMENSION OF A POROUS STRUCTURE DURING THE PERCOLATION OF A LAYER OF FINITE THICKNESS

Abstract

Permeability is an important property of porous materials. In some ways of creating porous materials, this property is controlled by the choice of a pore former whose properties and concentration determine the permeability and morphology of the porous structure. An approach based on the estimation of the fractal dimension of the porous structure, in which the percolation of the finite material layer occurs, is described. The percolation condition is considered to be the equality of the cluster diameter to the layer thickness. On its basis, equations were obtained that relate the fractal dimension to the layer thickness, the sizes of percolation clusters, and the fraction of closed pores. According to the above estimates, the fractal dimension decreases, and the morphology of the porous structure becomes more complicated, with a decrease in the layer thickness, a decrease in the size of percolation clusters, and with an increase in the proportion of closed pores.

About the Author

Victor Borisovich Fedoseev
G.A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences
Russian Federation


References

1. Yudin V.V. Visible-light induced synthesis of biocompatible porous polymers from oligocarbonate-dimethacrylate (OСM-2) in the presence of dialkyl phthalates // Polymer 2020. V. 192. P. 122302.

2. Kovylin R.S. Amphiphilic fluorinated block-copolymer coating for the preparation of hydrophobic porous materials // J. Polym. Res. Journal of Polymer Research, 2018. V. 25, N 9. P. 1–11.

3. Feder E. Fractals. Moscow: Mir, 1991. 254 p.

4. Sokolov, I.M. Dimensions and Other Geometric Critical Indicators in the Theory of Flow. Uspekhi Fizicheskikh Nauk, 1977, vol. 150, no. 2, pp. 221–255.

5. Leuenberger H., Leu R., Bonny J.D. Application of Percolation Theory and Fractal Geometry to Tablet Compaction // Drug Dev. Ind. Pharm. 1992. V. 18, N 6–7. P. 723–766.

6. Mandelbrot B.B., Given J.A. Physical properties of a new fractal model of percolation clusters // Phys. Rev. Lett. 1984. V. 52, N 21. P. 1853–1856.

7. Hoshen J., Kopelman R. Percolation and cluster distribution. I. Cluster multiple labeling technique and critical concentration algorithm // Phys. Rev. B. 1976. V. 14, N 8. P. 3438–3445.

8. Lebovka N.I. Percolation in models of thin film depositions // Phys. Rev. E-Stat. Physics, Plasmas, Fluids, Relat. Interdiscip. Top. 2002. V. 66, N 6. P. 4.

9. Bykov, A. A. Fractal Dimension of Cluster Boundaries in Porous Polycrystalline HTS Materials // Physics of the Solid State. 2012. Vol. 54, No. 10. Pp. 1825–1828.

10. Buzmakova M.M. Percolation of Spheres in a Continuum // Izvestiya of Saratov University. Mathematics. Mechanics. Computer Science. 2012. Vol. 12, No. 2. Pp. 48–56.

11. Fedoseev, V. B. Thermodynamic Analysis of the Fractal Dimension of Crystal Structure Defects // Nonlinear World. 2009. Vol. 7, No. 10. Pp. 782–786.

12. Fedoseev V.B. and Shishulin A.V. On the Size Distribution of Fractal-Shaped Dispersed Particles // ZhTF. 2021. Vol. 91, No. 1. Pp. 39–44.


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Fedoseev V.B. ESTIMATION OF THE FRACTAL DIMENSION OF A POROUS STRUCTURE DURING THE PERCOLATION OF A LAYER OF FINITE THICKNESS. Proceedings of the Kabardino-Balkarian State University. 2022;12(5):79-83. (In Russ.)

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ISSN 2221-7789 (Print)