The objective of the presented research was to determine the influence of cellulose coating, obtained from the cellulose solution in N-Methylmorpholine N-oxide (NMMO), on the structural and mechanical properties of paper. The effect of heating time of paper samples coated with cellulose dissolved in NMMO was also investigated. Depending on the heating time of the coating, a continuous or porous layer was obtained. Coating without any heating stage yielded a continuous cellulose layer of hydrophobic properties (higher contact angle in comparison to base paper), and paper of higher smoothness and increased tear resistance. Analysis of the paper samples showed that cellulose coating not only changed the surface properties of paper, but also significantly improved paper strength properties, such as the tensile index, elongation, bursting strength index and double folds number. Despite the process' limitations (e.g. necessity of removing the NMMO), this method can be considered as a novel approach for paper property modification.

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Construction features of three-dimensional clothes mannequin model according to three-dimensional scanning. Modern problems of science and education, 2-1.

In this study was analyzed the physical-mechanical properties and characteristics of different type of threads (linen, polyamide, cotton, polyester, silky) for blocks sewing. Investigated the brochure block binding with reduced threads surface friction coefficient, physical-mechanical parameters analysis. An important step in calculating the strength of threads for book sections and book blocks sewing is the choice of the strength criterion. For this purpose, are analyzed the influence of the structure of cotton and polyamide threads antifriction. Here was made the book binding process optimization with different types of the thread. It has been determined that the strongest book binding is with the polyamide type thread.

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