ДОСЛІДЖЕННЯ ВПЛИВУ ПОЛІМЕРІВ АКРИЛОВОЇ ТА УРЕТАНОВОЇ ПРИРОДИ НА МЕХАНІЧНІ ВЛАСТИВОСТІ БАВОВНЯНОГО ТРИКОТАЖУ

Purpose. The purpose of the work is to study the effect of polymer coatings on the rigidity of cotton knitted fabric. Methodology. As the object of the study aqueous dispersions of acrylic copolymers and aliphatic polyurethanes are used. Standardized methods for studying the indicators of physicomechanical properties of polymer films and textile materials are used. The formed polymer films are characterized by their appearance and an indicator of relative elongation at break. Mechanical properties of cotton knitted fabric with polymer coating are evaluated in terms of rigidity. Findings. The paper presents the results of the study of the physicomechanical properties of polymer films of acrylic and urethane nature. The dependence of the elasticity of the formed films on the functional groups of the polymer and their relative position is shown. According to the results of the experiment, it was established that the rigidity of the finished knitted fabric depends primarily on the chemical structure of the polymer binder. It was determined that the studied acrylic copolymer with the adhesion promoter and aliphatic polyurethanes due to the high degree of cross-linking enhance the elastic properties of the polymerfiber composite formed. The necessity of choosing a polymer with high elasticity to form a coating on a knitted fabric was established. Originality. It is proved that the proposed styrene-acrylic copolymer due to the formation of a highly elastic film allows us to obtain a soft handle of cotton knitted fabric. Practical value. The results of the experiment are of practical importance for the development of new finishing compositions for textile materials. [ABSTRACT FROM AUTHOR]