Jiri Militky

Jiri Militky
Technical University of Liberec | TUL · Material Engineering

prof. PhD
material engineering, statisical data treatment, nanomaterials

About

709
Publications
148,990
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
5,891
Citations
Introduction
Skills and Expertise

Publications

Publications (709)
Article
Full-text available
Over the past decade, there have been many successful attempts at artificially reproducing the surface structures found on natural superhydrophobic surfaces. The researchers have been working to mimic the nature by inducing superhydrophobic properties into a variety of material surfaces so that they exhibit non-wetting and self-cleaning properties....
Conference Paper
Nowadays, the strain sensor is widely used in the health care industry to monitor the human body. The warp-knitted and weft-knitted structures are interesting with the behavior during stretching; the yarns were arranged crisscross and act as a spring-like behaviour because of their structures. While stretching, the loop in the knit structure reacts...
Article
This paper presents one efficient and accurate EMI shielding performance simulation method for metal particles coated with nonwoven textile-based material with the optimized textile module using the finite element method (FEM) based on the waveguide model. Copper particles coated polyester nonwoven materials with three contents of copper were made...
Article
Electric and electronic devices are mainly emitting electromagnetic radiation, and shielding from radiation is essential. Electrically conductive materials are suitable for radiation shielding applications. The designing of the textile material for the radiation shielding is challenging because of its open area and design. In general, more open are...
Article
Full-text available
Compression socks are a highly acclaimed textile garment for pressure exertion on the lower part of the leg (ankle). This part of the research explains the theoretical investigation of compression pressure by the modelization technique that helped to develop two new mathematical models by incorporating a few missing parameters for the measurement o...
Article
Bacteria, viruses, and temperatures change can affect the preservation of food and medicines, so it is necessary to develop an intelligent textile for antibacterial and thermal regulation. In this paper, we used coaxial electrospinning technology to achieve antibacterial thermo-regulating intelligent textiles. The polyacrylonitrile (PAN)/curcumin i...
Article
Full-text available
The purpose of effective electromagnetic interference (EMI) shielding is to prevent EMI from smartphone, wireless, and utilization of other electronic devices. The electrical conductivity of materials strongly influences on the EMI shielding properties. In this work, mainly focus to predict the EMI shielding effectiveness on the ultralight weight f...
Article
Full-text available
High thermostability of phase change materials is the critical factor for producing phase change thermoregulated fiber (PCTF) by melt spinning. To achieve the production of PCTF from melt spinning, a composite phase change material with high thermostability was developed, and a sheath-core structure of PCTF was also developed from bicomponent melt...
Article
Full-text available
The purpose of fabric masks in the prevention of the spread of COVID-19 often requires that the masks be worn for extended periods without removal. The management of the conditions in the micro-climate inside the masks is important to keep the wearer comfortable and enhance user compliance. In this study, the effect of mask design and fabric type o...
Article
Full-text available
Insect repellent textiles offer protection against disease-causing vectors such as mosquitoes, flies, and ticks. Protection is based on the incorporation of insect repellent compounds present in plant oil derivatives or synthetic oils. The effectiveness and application of natural insect repellents such as citronella grass, lemongrass, rosemary, pep...
Article
Full-text available
Conventional conductive homopolymers such as polypyrrole and poly-3,4-ethylenedioxythiophene (PEDOT) have poor mechanical properties, for the solution to this problem, we tried to construct hybrid composites with higher electrical properties coupled with high mechanical strength. For this purpose, Kevlar fibrous waste, conductive carbon particles,...
Preprint
The cellulose/polyvinyl alcohol (PVA)/expanded graphite (EG) 3D porous foam, which has wide application prospects in cost-effective dye removal, was prepared by physical crosslinking and foaming technology. The prepared foam material has an obvious 3D network and porous structure, exhibiting excellent removal efficiency for methylene blue (MB) in a...
Article
In this study, a facile phase inversion method was used to design an expanded graphite (EG)/polyvinylidene fluoride (PVDF) porous composite, simultaneously achieving good flexibility, mechanical strength, and satisfying electrostatic dissipation (EDS) material criteria (10⁵–10¹¹ Ω). The composite materials exhibit a dramatic improvement in the elec...
Data
A Matlab code for inverse characterization of fibrous materials.
Article
Poly(ethylene glycol) (PEG) is used as phase change materials while the low thermal conductivity restricted the thermal storage efficiency. Incorporation of the metal particles (MPs) into PEG could enhance the thermal conductivity while the crystallization kinetic mechanism of the MP-filled PEG composites is altered. Flake MPs are characterized wit...
Article
Coating of PTFE on the fabrics is one facial method to obtain the hydrophobic/superhydrophobic property. However, the breathability of the PTFE-coated fabrics prepared by traditional methods (e.g., sputtering) is significantly affected. Electrospraying technology was able to create the pure PTFE coating layer on any substrates and the following sin...
Article
Full-text available
Structural parameters are critical for the final properties of fibrous materials. Three common parameters (i.e., porosity, thickness and average fiber diameter) of each fibrous sample are simultaneously determined based on their air penetration behavior. The Ergun-type equation and the Kozeny-type equation, with the help of the optimization method,...
Article
Ultraviolet radiation is extremely harmful to humans and often occurs in high-temperature weather. The development of intelligent textiles based on UV protection and thermal regulation is paramount. In this research, we use coaxial electrospinning technology to prepare anti-ultraviolet smart thermo-regulating nanofiber membranes. The zinc oxide (Zn...
Article
Full-text available
The aim of this research was the preparation and characterization of hybrid prepreg tapes from glass multifilament roving (circular cross-section). The fiber, roving, and tape strength distribution was characterized by exploratory data analysis tools (especially quantile-quantile plot) and modeled by the three parameters’ Weibull distribution. For...
Article
Full-text available
Phase change materials (PCMs) were characterized to adsorb/release the thermal energy during the phase transition process over a certain temperature range. The PCMs had been incorporated into textiles to enhance the thermal property and the products are labeled as PCM textiles. The thermal behavior of the PCM textiles (the PCM fibers, the PCM yarns...
Article
Full-text available
This paper presents the preparation of aerogel/polytetrafluoroethylene (PTFE) microporous materials via needleless electrospray technique, by using an aqueous dispersion of polytetrafluoroethylene as the basic spinning liquid. Different contents of aerogel powders were applied to the spinning liquid for electrospraying to investigate the effect on...
Article
Full-text available
To function as source control, a fabric mask must be able to filter micro-droplets (≥5 µm) in expiratory secretions and still allow the wearer to breathe normally. This study investigated the effects of fabric structural properties on the filtration efficiency (FE) and air permeability (AP) of a range of textile fabrics, using a new method to measu...
Article
In this work, the sound absorption performance of cotton fiber- and wool fiber-based nonwoven fabrics as well as one pure polyester nonwoven fabric were investigated. The Brüel & Kjær two-microphone impedance tube is used to conduct the measurement in the frequency of 50–6400 Hz. Empirical and semi-phenomenological models are used to predict the ac...
Article
Full-text available
A textile material’s electromagnetic interference (EMI) shielding effectiveness mainly depends on the material’s electrical conductivity and porosity. Enhancing the conductivity of the material surface can effectively improve the electromagnetic shielding effectiveness. However, the use of highly conductive materials increases production cost, and...
Article
In the last few years, concerns about the adverse effects of petroleum-based materials on the environment and public health have gradually increased. It is worthy and meaningful to find natural materials to substitute the conventional synthetic sound absorbers. The sound absorption properties of Norway maple leaves were investigated in this paper....
Article
Full-text available
The main aim of the present study was to investigate the effect of microwave irradiation time on the photocatalytic and physiological comfort characteristics of zinc-oxide-nanorod-coated cotton fabrics. An ultra-fast technique was employed to grow the zinc oxide nanorods on cotton fabrics using a microwave-assisted hydrothermal method. The axial (l...
Article
Full-text available
The augmented demands of textile materials over time have brought challenges in the disposal of substantial volumes of waste generated during the processing and end of life of such materials. Taking into consideration environmental safety due to discarding of textile waste, it becomes critical to recuperate useful products from such waste for econo...
Article
At present, electrospinning technology is a versatile and simple method for generating nano-scale membranes, and it provides attractive solutions in solving environmental problems and many energy problems. However, such films generally have low mechanical properties which limit their use in industry. Nanocellulose with excellent mechanical properti...
Article
Full-text available
Far infrared (FIR) textiles are a new category of functional textiles that have presumptive health and well-being functionality and are closely related to human thermo-physiological comfort. FIR exerts strong rotational and vibrational effects at the molecular level, with the potential to be biologically beneficial. In general, after absorbing eith...
Article
The presented work reported a facile and low-cost approach for creating multifunctional cotton fabrics with hydrophobic, self-cleaning and UV protection properties. The facile dip-pad-dry-cure coating technique was employed to modify the cotton fabric surfaces with 1–3 wt% concentration of ZnO nanoparticles. The characterizations of surface morphol...
Conference Paper
Full-text available
Electromagnetic radiation is emitted by most of the electric and electronic devices and shielding from radiation is important. In this study, the Cu/Ni coated ultrathin nonwoven fabric sample was taken to form two-layer of strips and test for electromagnetic shielding effectiveness. The two layered strips were prepared with 3-, 6-, & 9-mm strip thi...
Article
Phase change fibers (PCFs) as a kind of composite material, the composition and spatial distribution of each phase have a great influence on its thermal and mechanical properties. In this article, PCFs with polyvinylpyrrolidone (PVP), polyvinyl butyral (PVB), and polyacrylonitrile (PAN) as sheath and 30% octadecane kerosene as core were prepared by...
Article
Full-text available
In the current research, we present a single-step, one-pot, room temperature green synthesis approach for the development of functional poly(tannic acid)-based silver nanocomposites. Silver nanocomposites were synthesized using only tannic acid (plant polyphenol) as a reducing and capping agent. At room temperature and under mildly alkaline conditi...
Article
Full-text available
Particulate matter 2.5 (PM 2.5.) pollution is a serious threat to human health. In this paper, we firstly used electrospraying technology to fabricate composite polytetrafluoroethylene (PTFE)/expanded graphite (EG) coated spun-bond polypropylene (PP) microporous filters that show tremendous potential for its use as an effective PM 2.5. capture medi...
Article
Air penetration behavior plays a vital role in the performance of fibrous material in various industrial applications. Two parameters, the permeability coefficient and airflow resistivity, can describe the air penetration behavior of fibrous material. FX 3300 Textech Tester III and AFD300 AcoustiFlow devices were used to respectively characterize t...
Article
Full-text available
In this study, an algebraic model and its experimental verification was carried out to investigate the effect of moisture content on the heat loss that takes place due to conduction of sock fabrics. The results show that increasing moisture content in the studied socks caused a significant increase in their conductive heat loss. Plain knitted socks...
Conference Paper
Different textile material structures have unique geometrical shapes and designs. In this work, Copper/ nickel-coated ultrathin nonwoven fabric was prepared in a strip form. The 3 mm, 6 mm, and 9 mm thick strips were laid at different gaps, angles and layered to study the effect of factors on EM shielding effectiveness as per ASTM D4935-18 standard...
Article
Full-text available
The fabrics with electromagnetic interference (EMI) have been used in various fields. However, most studies related to the EMI fabrics focused on the improvement of the final electromagnetic shielding effectiveness (EM SE) by adjusting the preparation parameters while the breathability of the EMI fabrics was affected and the visible surficial patte...
Article
Full-text available
In this research, orthogonal structure carbon fiber reinforced composite was developed and its properties were compared with those of laminated structure composite. To solve the problem of yarn damage caused by friction during the weaving process, a custom‐built weaving device was build up. Compression and vacuum‐assisted resin infusion molding (VA...
Article
Full-text available
P-aminophenol is a hazardous environmental pollutant that can remain in water in the natural environment for long periods due to its resistance to microbiological degradation. In order to decompose p-aminophenol in water, manganese oxide/polytetrafluoroethylene (PTFE) hollow fiber membranes were prepared. MnO2 and Mn3O4 were synthesized and stored...
Article
Full-text available
This paper discusses the influence of fiber reinforcement on the properties of geopolymer concrete composites, based on fly ash, ground granulated blast furnace slag and metakaolin. Traditional concrete composites are brittle in nature due to low tensile strength. The inclusion of fibrous material alters brittle behavior of concrete along with a si...
Article
The objectives of the present study were to develop the environmental friendly, low price, easy and fast method for developing the antibacterial cuprous oxide coated multifunctional fabrics. At first, fabrics were sensitized with citric acid then the formation of Cu2O particles was done by Fehling solution method. In second step, the cuprous oxide...
Article
Full-text available
This work deals with the influence of washing and moisture on the change of air-permeability of cotton fabrics and the impact of different types of seams on air-permeability. It turns out that the effect of the kind of seams does not significantly affect the air-permeability. Repeatable washing has a much more significant impact when the fabric is...
Article
Stable energy storage materials have become the research focus today. Coaxial electrospinning can prepare core-sheath nanofibers loaded with phase change materials (PCMs). This method requires the sheath solution have good spinnability and encapsulation ability. Suitable solutions can be prepared by the thermal cross-linking method to improve the p...
Article
Full-text available
Electromagnetically shielding textile materials, especially in professional or ordinary clothing, are used to protect an implanted pacemaker in the body. Alternatively, traditional textiles are known for their non-conductivity and transparency to an electromagnetic field. The main goal of this work was to determine whether the high moisture content...
Article
Full-text available
The introduction of metal particles (MP) in the phase change materials (PCM) realizes the highly efficient thermal energy storage. However, a suitable carrier is necessary for PCM/MP composites for various applications. In this work, the polyethylene glycol (PEG) was used as PCM, five MPs including copper (Cu), aluminum (Al), silver (Ag), iron (Fe)...
Article
Full-text available
Nonwoven fabrics are widely used for thermal insulation and sound absorption purpose in construction and automobile fields. It is essential to investigate their thermal conductivity and sound absorption coefficient. Five cross-laid nonwoven fabrics are measured on the Alambeta device and Brüel & Kjær impedance tube. Bogaty and Bhattacharyya models...
Article
Full-text available
The versatile one-pot green synthesis of a highly concentrated and stable colloidal disper�sion of silver nanoparticles (Ag NPs) was carried out using the self-assembled tannic acid without using any other hazardous chemicals. Tannic acid (Plant-based polyphenol) was used as a reducing and stabilizing agent for silver nitrate in a mild alkaline con...
Chapter
In practice, face masks tend to be a group of daily supplies for people’s life. The microenvironment between mouth and face masks was complicated, where the excess moisture increased the unconformable feeling. The moisture harvesting was associated with the surface chemistry of the substrate, the thermal equilibrium among the drop, substrate, and e...