There were PP- and iron-containing, fibrous, carbon- and nanodispersed-addition-based composite fibers prepared. There were addition content equals of 5.0%mass. There were blend of isotactic PP and addition homogenized in melt with one-screw lab extruder. There were zonal temperature on extruder equals of 230-250 o C. There were strangs receiving in bath of water and threated with knife granulation. Then, there were granules drying on air during 5h, and, then in thermal vacuum oven at 80±5 o C during 3h. Then, there are monofiber of 1 mm’s diameter formed on lab stand. Then, from one formed those others monofibers of different values of spinneret drawing (Фв, %). There were Фв for monofibers equals of 300 and 500%. Then, there were formed monofibers threated with thermoorientational drawing process at 150 oC. Then, there were monofibers of Фв value, which equals of 300%, drawn till draw degree λ=6, but, those others of Фв value, which equals of 500% - to λ=4. It is succeed, for composite monofibers, that orientational drawing process has had realized, until to the same value, as well as for one of virgin PP. But, when at formation and thermoorientational drawing processes, there were placing much number of breaks, as compared with monofiber of pure PP. When studying the structure with SEM technique, there was revealed microfibrillar structure of composite monofiber. When using optical microscopy, then there was determined irregularity for distribution of addition’s particles, leading to disproportional distribution of tension values at loading. It is revealed, for composite monofiber, at given value for content of addition, that electrical conductivity phenomenon is absent here. There are real ε’and imaginal ε’’ parts of complex dielectrical permittivity phenomenon, on frequency of 9 GHz, equals of 2.1 and 0.2, accordingly. It is established, that pure, non-drawn and composite monofiber itrinsically have satisfactory magnetic properties (σs=0.5 Gs∙cm3/g, Hc= 695 E). There are real μ’ and imaginal μ’’ parts of complex magnetical permittivity phenomenon equals of 1.1 and 0.02, accordingly.

Solid nanosize Aerosil additives almost do not alter the properties of melts of PP/CPA blends. Melts of threecomponent blends are strengthened in a longitudinal velocity gradient field, manifested by a sharp increase in the maximum possible spinneret drawing. Nanosize Aerosil additives do not prevent realization of specific fibre formation in flow of melts of PP/CPA blends. As a result of stabilization of the liquid jets of PP in a CPA matrix, thinner (up to 0.30-0.15 μm) microfibres are formed with low dispersion of the distribution by diameters. This increases the specific surface area by 3-4 times. Nanofilled PP microfibres and new filter materials that combine high output and efficiency (99.999% with respect to 0.3 μm particles) were made for the first time. Aerosil additives act as crystallization centers during spinning of PP microfibres, which prevents the liquid jets from breaking down into drops. Incorporation of highly disperse Aerosils can be a method of regulating crosslinking of the polymer in the disperse phase in the matrix polymer.In the last decade, the nanostructural state of materials has been of great interest to scientists, and the research in this direction has become an important world trend. When the nanostructural state is attained, the basic functional characteristics of the materials change sharply and unique properties appear [1]. Data on the nanostate in polymers are usually limited to patent information. Polymeric nanofibres obtained primarily by electrospinning acquire unique properties: color change, ultrasound generation, reaction to specific signals, change in the pH of the medium, temperature, concentration of solutions, etc. However, solving the problems related to technical difficulties and the complexity of production of nanomaterials and the high cost of the final product remain pressing.Manufacturing nanofibres from melts of polymer blends implies reducing the diameter of the microfibres to nanosizes. One way of doing this is to add compatibilizers [2, 3], whose mechanism of action consists of decreasing the interfacial tension. By affecting interfacial events, structure formation processes can be regulated toward reducing the diameter of the microfibres. Research is also developing intensively in the polymeric nanocomposite sector, which is producing materials with unique properties [5].We investigated production of polypropylene microfibres containing a filler in the nanostate by processing melts of polymer blends. There is no published information on this topic and this research is being done for the first time.Polypropylene/copolyamide (PP/CPA) blends in the ratio of 30/70 wt. % were investigated. Industrial samples of PP and CPA were used: brand 2103016 polypropylene manufactured by Lisichansk chemical plant, brand PA-6/66-3 copolyamide manufactured by Ural Plastik IA (alcohol-soluble copolymer of 50% caprolactam and 50% hexamethylene adipate) were investigated.

No abstract