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This study focuses on natural fiber nano-coatings - hemp and cotton modification and coating surface structure. For surface modification sol - gel technology is used. To predict the quality of the sols and the surface structure, the coatings were initially applied to different materials and tested with optical microscopy and atomic force microscopy. Samples were analyzed before and after washing as well as before modification with Fourier - transform infrared spectroscopy and energy-dispersive X-ray spectroscopy. ...