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A series of polymers was made from new fluoroalkyl acrylates and the effect of the structure of their fluoroalkyl radical on the decrease in the wettability of fibre materials was investigated. It was found that polymers with long fluoroalkyl radicals of linear structure are characterized by the highest effectiveness. Chain branching and incorporation of an oxygen atom in the fluoroalkyl chain decrease the nonwettability effect of the modified fibres.Fluorine-containing polymers have unique properties due to their chemical nature and the structure of the polymer chain. They are characterized by high chemical stability, thermal stability, dielectric properties, inertness, etc. In highly fluorinated organic compounds, the intermolecular interaction forces are weak because of their low surface tension. The weak intermolecular forces on the airsolid interface in fluorine-containing polymers cause the formation of surfaces with extremely low surface energy. For this reason, when added to the surface layer of a fibre, fluoropolymers can sharply reduce the surface energy and decrease the wettability by liquids of different chemical nature, including those with low surface tension [1].The use of fluorine-containing polymers for decreasing the wettability of fibres is one of the most efficient methods of manufacturing textiles with antiadhesive (water-, oil-, and soil-repellent) properties [2].In world practice, latexes based on fluorine-containing polymers, primarily polyfluoroalkyl acrylates with a long perfluoroalkyl radical, have been developed and are widely used for this purpose. Poly-1,1-dihydroperfluoroheptyl acrylate latex LFM-3 has been proposed by domestic industry for decreasing the wettability of fibres [3]. With respect to the level of the antiadhesive properties given the textile, it is on a par with the foreign analogs, but it is expensive and the feedstock base is limited.Recent research on manufacture of textiles with oil, water-, and soil-repellent properties primarily focused on searching for and creating new compounds and composites which would increase processing efficiency and reduce the cost of and simplify the manufacturing technology of both the products themselves and the modified materials.In using polyfluoroalkyl acrylates for modifying the surface properties of textiles, the basic factor that determines the level of these properties is the length and structure of the fluoroalkyl radical. The antiadhesive properties of a fibre begin to appear when there are no less than four perfluorinated carbon atoms with a CF 3 group at the end of the chain and they increase significantly as it becomes longer [2]. There are no published data on the effect of the features of the structure of this chain and the presence of other atoms and groups in it.Several new types of fluorine-containing monomers of the acrylic series which differ in the length and structure of the fluoroalkyl radical and contain long linear or branched chains of perfluorinated carbon atoms on the end of the radical have 0015-0541/05/3702...

The comparative effectiveness of using polyfluoroalkyl acrylates of different structure to decrease the surface energy of viscose and polyester fibres was investigated. It was found that polyfluoroalkyl acrylates with a linear alkyl radical of optimum length (6-8 fluorinated atoms) were the most effective in decreasing the surface energy of viscose and polyester fibres; branching of the fluoroalkyl radical and appearance of oxygen atoms in the perfluorinated radical decreased the effectiveness of the modifier polymer. The index of the critical surface tension of heptaneoil mixtures was used as the criterion for evaluating the effectiveness of the polyfluoroalkyl acrylates in reducing the wettability of the fibre. The most effective modifier among the new polyfluoroalkyl acrylates was selected based on the results of the studies polyperfluorodecyl acrylate.Polyfluoroalkyl acrylates, which have the lowest surface energy, are effective modifiers that allow changing the properties of different materials by reducing their surface energy and consequently decreasing the adhesion and wettability of the modified surfaces [1].We investigated the comparative effectiveness of using polyfluoroalkyl acrylates with a different structure of the alkyl radical (R) in the molecule of the polymer with the following general formula of the elementary unit (CH 2 CH) n~ | COORThe polymers were divided into three groups as a function of the structure of the radical: Group I polymers with a linear fluoroalkyl radical of different length from C 6 to C 8-1 8 with no heteroatoms: CH 2 (CF 2 ) 5 CF 3 poly-1,1-dihydroperfluoroheptyl acrylate (poly-M-7); ~CH 2 CH 2 (CF 2 ) 7 CF 3 poly-1,2-dihydroperfluorodecyl acrylate (poly-M-10); ~CH 2 CH 2 (CF 2 ) 7 ...