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Funct. Mater. 2019; 26 (2): 389-396.


Polypropylene fine-fiber filter materials modified with nano-additives

N.M.Rezanova1, V.G.Rezanova1, V.P.Plavan1, O.O.Viltsaniuk2

1Kyiv National University of Technology and Design, 2 Nemirovich-Danchenko Str., 01011 Kyiv, Ukraine
2Vinnitsa National Pirogov Memorial Medical University, 56 Pirogov Str., 21018 Vinnitsa, Ukraine


Properties of fine-fiber filter materials (FM) obtained by extraction of matrix polymer from a microfibrillary composite in the form of a film formed by extrusion of polypropylene(PP)/copolyamide(CPA)/nano-additive mixtures were studied. The main structural unit of FM is polypropylene microfiber (microfibrill), filled with mineral silica-based nano-additives. Modified FMs are characterized by high efficiency of air purification of mechanical particles of 0.3 μm and higher. The possibility to adjust the precision of filters by reducing the diameters of PP fibrils formed in situ and to increase their mass fraction is shown. This was achieved by introducing of nano-additives of different chemical nature into the mixture of PP/CPA and changing their concentration. Nanoparticles in the structure of filter materials contribute to their hydrophilicity and specific surface increasing, and also provide adsorption capacity, and antimicrobial action against a number of microorganisms and fungi.

polymer mixtures, nano-additives, microfibrille, filter material.

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