The paper presents a method of modifying polyacrylonitrile (PAN) fibers using polyaniline (PANI). PAN were doped with that was obtained in two different ways. first consisted doping spinning solution synthesized an aqueous (PAN/PANI blended), and the second involved synthesis directly situ). characterized by methods: X-ray powder diffraction (XRD), scanning electron microscope (SEM), fourier-transform infrared spectroscopy (FTIR), thermogravimetry (TG) differential calorimetry (DSC)....

This paper presents a method for the preparation of nanocomposite cellulose fibers doped with silver nanoparticles (AgNPs), as well effect on structure and properties fibers. The were obtained by an environmentally friendly using N-Methylmorpholine N-oxide (NMMO) solvent, in non-polluting closed system. Doping was carried out direct (in situ) reduction Ag⁺ ions presence stabilizing agent during spinning solution. SEM images surface cross section showed that distribution fibers' volume...

The paper presents the results and analysis of interdisciplinary research concerning electromagnetic field shielding, conductive polymers printed on textiles numerical simulation using finite element method (FEM). use conductive, layered for shielding interference (EMI) has been proposed. After establishing optimal conditions deposition polyaniline (PANI) polypyrrole (PPy) polyacrylonitrile (PAN) fabric, composites were made by means reactive inkjet printing. For this purpose, fabrics coated...

Frequency-selective surfaces (FSS) are two-dimensional geometric structures made of conductive materials that selectively transmit or reflect electromagnetic waves. In this paper, flexible FSS on textile and film substrates is presented compared to show the effect texture associated with type substrate shielding properties. Three geometries patterns squares in border, inversion circles a border were used, by silver paste screen printing technique. Microscopic analysis (SEM optical) was...

We present a method for synthesis of silver nanoparticles in N-methylmorpholine N-oxide (NMMO) and the associated mechanism, as well their use situ volume modification cellulose fibers. The synthesized particles had diameter about 4 nm, colloid solution was stable 1 year. were stabilized using polyethylenimine, which apart from preventing nanoparticle agglomeration, also accelerated Ag+ ion reduction prevented NMMO degradation. A mechanism is suggested based on electrochemical potentials all...

In this article, a new method of modification polypropylene fabric surface is presented, in order to obtain material with antibacterial properties. The the modified by direct deposition hexagonal zinc oxide rods onto surface. For reason, influence temperature on size and morphology microstructures ZnO was investigated. Deposition carried out at two temperatures, 75 90℃. fabrics treated oxygen plasma. plasma parameters examined. microstructure crystalline structure were investigated scanning...

Abstract Studies have been carried out aimed at the development of structures and technology for making special multi-layer textile-polymeric systems shielding electromagnetic field (EMF). The use textiles as EMF materials is commonly known, however attenuation obtained practically exclusively results from reflection EMF, while used this purpose a rule, show poor absorption abilities. basic assumption new solution exploitation multiple internal incident either in coating containing...

Abstract The paper describes the use of electrical impedance spectroscopy (EIS) for characterizing polyaniline doped polyacrylonitrile fibres. fibres samples was measured by means high analyser and modeled four types models: Debye, Cole-Cole, Davidson-Cole Havriliak-Negami. fitting errors are presented all model types. parameters correlated with chemical substances additives processing which were used during production. results show that fractional-order models reflect properly spectra samples.

TiO 2 particles were deposited onto the surface of polyester (PES) material.The microbiological research carried out on two bacteria strains: Staphylococcus aureus and Klebsiella pneumoniae, which showed antibacterial properties PES surfaces modified with titanium dioxide under influence UV radiation.

The aim of the present study was to develop a process for preparation nanoparticles with antybacterial/bacteriostatic properties including conditions using these particles in textile-polymeric coating materials stable bacteriostatic properties. developed functional consist submicro-spheres (mainly SiO2 -Fig. 1) made by "sol-gel" technique. On their surface, "nanoislets" an antibacterial agent such as metallic silver (Ag) were durably deposited (Figs 2 and 3). Such bioactive then incorporated...

The results of investigations the effects corona discharge, generated by a tool set (PZU) constructed us to modify surface layers polymeric textiles, on properties layer polyester (PET) fabric are presented. unit energy (Ej) discharge following factors were evaluated: contact angle and free (Table 1), capillarity (Fig. dyeability with test dye 2, Fig. 2), acidic groups' amount 3), oxygen content at 4) changes geometrical structures fibers' surfaces material tested 5). It was found that...

The article shows the results of designing and research work relating to a new set equipment being intended for modification surface layer textile polymer materials by corona treatment. Based on preliminary it was found that commonly used presently films treatment useless in relation materials. Although increase unit energy with latter system had improved effects, material modified became thermally damaged an unacceptable degree (Fig. 1-4). Therefore, design elaborated, which could modify...

Abstract This paper concerns multilayer, shielding textile-polymeric materials with a high effectiveness. effectiveness is characterised by capability to absorb electromagnetic fields as result of intensification multiple internal reflections at the boundaries between layers component materials. These new present low thicknesses and surface weights, amounting 1.0–2.0 mm 190–420 g m − 2 , respectively, depending on their structures. Such composed various structures, containing functional...

Abstract Silver and gold nanoparticles have been linked with the structure of polyacrylonitrile (PAN) fibers as a result synthesis. The were formed in dimethylformamide (DMF) solution, which is uncommon for their synthesis, but typical solvent polyacrylonitrile. examination metallic doped showed presence these particles samples. Analysis Energy Dispersive X-ray Spectrometry (EDX) results that silver content was same precursors metal ions. amount significantly greater than corresponding...