Jiri Militky

Verified

Jiri verified their affiliation via an institutional email.

Learn more

Verified

Jiri verified their affiliation via an institutional email.

Learn more

• prof. PhD
• Professor (Full) at Technical University of Liberec

The use of polyester and polyamide fabrics for parachute constructions has a great advantage because, in comparison with classical silk-based parachutes, they are more durable and suitable for absorbing higher mechanical shocks. Because polyester and polyamides are thermoplastics, they are sensitive to sudden increases in temperature due to mechani...

Magnesium-based compounds, such as oxide (MgO) and hydroxide (Mg (OH)2), are used in various applications ranging from medicine to electrotechnics. Especially, magnesium hydroxide coatings of textile structures are frequently used as part of flame retardant compositions, antibacterial agents, and surface absorption of far infrared radiation. Numero...

Bacterial cellulose (BC) synthesized by Acetobacter xylinum has gained significant attention due to its unique structural and functional properties. This study focuses on the simple, facile, and cost-effective synthesis of bacterial cellulose films from Acetobacter xylinum and evaluates their impact on selected properties. The BC films were prepare...

The main objective of this study was to create versatile and wearable electrically conductive electrodes for Transcutaneous Electrical Nerve Stimulation (TENS) application, ensuring they are comfortable by depositing silver particles directly onto the carbon particles imparted rubber electrodes. Scanning Electron Microscopy (SEM) was used to analyz...

Today, microplastics are found in soil, air, and all water sources, including rivers, groundwater, and treated drinking water, with the majority originating from wastewater produced during the washing process. The aim of this study is to determine how standard washing, drying, and wearing simulated by mechanical abrasion of 100% polyester multifila...

This study aims to develop the sol gel technique to enhance the durability of copper coatings on polyester nonwoven (NW) fabric while achieving effective electromagnetic interference (EMI) shielding. FTIR and XRD analyses confirm the successful silanisation of NW fabrics, while SEM imaging reveals uniform silane deposition on the copper-coated NW f...

In the present research, an advanced silane-bonded polydopamine (PDA) coating through a simple, low-cost, and highly effective technique was employed to enhance the stability of copper-coated electromagnetic shielding fabrics. Coating the metalized nonwoven PET fabric with PDA can protect it from oxidation, mechanical forces, and extreme chemical c...

Photocatalysis has been widely applied in dye degradation due to its high efficiency, stability, and environmental friendliness. However, the challenge of separating catalysts from aqueous systems persists, driving the demand for highly stable, durable, and cost-effective catalyst carriers. In this work, carbon felt prepared from waste acrylic fibe...

Advances in the textile industry have led to a shift from using empirical experience to design fabrics to using computer-aided systems. Objective fabric properties related to appearance, feel, and comfort are predicted based on the physical models. The look and feel of fabrics are greatly influenced by their complex surface topology, which can be d...

This book presents the effective combination of mathematical statistics, general metrology, and textile metrology to allow data analysis with regard to the evaluation of parameters of fibrous structures. Specialists working in material sciences, where fibrous structures are used, comprehensively understand the specifics of the fabric evaluation and...

Models of measurement are generally based on the type of action of the error components, assumptions about their variability, and the shape of their distribution. The basic types of measurement models, including their identification, characterization, and description, are broadly investigated. Additive and multiplicative measurement models are disc...

The measurement uncertainties in metrology are generally combining statistical characteristics of experimental results variability and mainly subjective not measurable sources of variability. The simplification of the metrological (ISO) approach and possible sources of inaccuracies due to the limiting validity of some a priori assumptions about the...

Metrology is closely connected with the philosophy of science and the nature of measurement errors. This chapter contains basic information about the principles of general metrology, the statistical characteristics of measuring instruments, and the different components of measurement errors. The analysis of measurement results based on various typi...

Calibration is a very common task connected with the construction of sensors, the development of new instrumental methods, measurements of physical variables that are not directly measurable, and the estimation of unmeasurable characteristics of products. It is composed of calibration model building based on regression analysis and calibration mode...

The processing of measurement results from technical data analysis is usually based on the a priori assumptions about their statistical behavior as independence, absence of outliers, and normality. These assumptions are used in all classical statistical methods. For smaller samples and imprecise measurements, simple tests of assumptions about data...

Data treatment is usually realized for results of measurement in cardinal scale. In textile metrology, some results are still in nominal or ordinal scales due to the use of subjective evaluation of complex characteristics, such as the appearance, hand, or comfort of textile products or intermediates. The basic properties of random variables in basi...

The essential concepts of probability and mathematical statistics are presented in a consistent form without detailed derivations. Some parts are also oriented to the description of special characteristics of random variables used in the textile metrology and in the engineering statistics. The practical limitations of standard methods based on the...

Melamine foam (MF) inherently possesses excellent flame-retardant properties due to its ability to release nitrogen upon combustion. Its porous and loose structure also contributes to its high flexibility, breathability, and sound absorption capabilities. Incorporating copper nanoparticles (Cu NPs) significantly enhances the material's electrical c...

Polymer optical fibers (POFs), including side‐emitting POF (SEPOF) and end‐emitting POF (EEPOF) are developed for luminous textiles. The SEPOF is more common for usage but suffers from significant intensity decay, which limits its effective usage length. In contrast, the EEPOF can provide a much more stable side illumination behavior than SEPOF sin...

Supercapacitors (SCs), as emerging electrochemical energy storage devices, have garnered widespread attention due to their rapid charge–discharge characteristics and high power density. With the growing demand for electronic devices and the diversification of applications in daily life scenarios, SCs with outstanding flexibility, mechanical and ele...

Advances in the textile industry have led to a shift from using empirical experience to design fabrics to using computer-aided systems. Objective fabric properties related to appearance, feel, and comfort are predicted based on the physical models. The look and feel of fabrics are greatly influenced by their complex surface topology, which can be d...

The present study aimed to develop wearable, electrically conductive hygienic electrodes and their use for Transcutaneous Electrical Nerve Stimulation (TENS) application. The development of electrodes was done in two stages. Firstly, the dispersion of conductive activated carbon particles was done into flexible elastomer followed by its silver elec...

Textile products comprise approximately 10% of the total global carbon footprint. Standard practice is to discard apparel textile waste after use, which pollutes the environment. There are professional collectors, charity organizations, and municipalities that collect used apparel and either resell or donate them. Non-reusable apparel is partially...

There is still a lot of research space and market demand for lightweight, heat-insulating, and EMI-shielding construction materials. This paper develops and compares the thermal insulation, ohmic heating effect, and EMI shielding properties of a kind of multifunctional sandwich material with “ROTIS” and “FLAT” structures. The ROTIS-structured sampl...

The problem of increasing plastic pollution has emerged as a significant societal issue. Plastics can originate from various sources, and there is growing concern among researchers to study and investigate this new category of pollution. The plastic waste is found at the macro, micro, and nanoscale, and its study has had great significance accordin...

In response to the growing demand for lightweight yet robust materials in electric vehicle (EV) battery casings, this study introduces an advanced carbon fiber-reinforced composite (CFRC). This novel material is engineered to address critical aspects of EV battery casing requirements, including mechanical strength, electromagnetic interference (EMI...

Bacterial cellulose (BC) presents significant promise as a biomaterial, boasting unique qualities such as exceptional cellulose purity, robust mechanical strength, heightened crystalline structure, and biodegradability. Several studies have highlighted specific effects, such as the impact of dehydration/rehydration on BC tensile strength, the influ...

The textile branch traditionally uses a surplus of energy, consuming an enormous amount of water, and is responsible for the deterioration of the environment. New solutions are formally focused on a circular economy with an impetus on sustainable development and a world with zero waste. In reality, the aims of circular economy often do not coincide...

Using waste materials in the mixture of building materials is an approach aligned with the circular economy, a viewpoint that creates sustainable building industries, especially in developed countries. This study concentrated on the application of laponite (LAP), fly ash (FA), and bentonite (BENT) materials in the mixture of cement pastes. The firs...

More than a third of microplastics in surface waters are formed by microplastics released from textile products containing textile fibers (fibrous microplastics). A large amount of fibrous microplastics enters the environment during textile production and the first few washing cycles. Mechanical, thermal, chemical, and biological damage to textiles...

Aerogels have remarkable properties but are limited by low mechanical strength and high production costs. They can be made from inorganic materials, synthetic polymers, and natural polymers like cellulose. Cellulose aerogels are notable for their renewability, biocompatibility, biodegradability, low density, high porosity, and large specific surfac...

Expanded graphite has promising potential environmental applications due to its porous structure and oleophilic nature, which allow it to absorb large quantities of oil. The material is produced by intercalating graphite and applying heat to convert the intercalant into gas to cause expansion between the layers in the graphite. Using different inte...

Carbon fiber reinforced epoxy resin matrix composite is one of the most important composite materials in the world. Many researchers have conducted a lot of research on epoxy resin matrix systems in recent years, mainly to improve the problem with the short curing time of the matrix system and epoxy resin's high viscosity. The final aim is to enhan...

Nowadays, electrically conductive textile materials are widely used also for sensing applications in addition to being used as antistatic, electromagnetic shielding, for creating smart textiles, etc. The main aim of this paper is to study the effect of tensile deformation applied on knitted fabrics on their electromagnetic shielding ability, electr...

The textile industry has been weaving polymer optical fibers (POFs) into plane fabric for many years for lighting and decoration. To apply POF-incorporated fabrics in a larger field of application, it is necessary to improve the side illumination of POF-incorporated fabrics. It has been reported that the chemical etching method is one method to enh...

Textiles incorporating phase change material have attracted increasing attention due to their temperature regulating function. Although a great progress has been made in the development of phase change material textiles, it has been found that the loading amount of phase change materials is limited by other final properties. Recently, we have propo...

This research provides an in-depth assessment of two paper yarn variants, examining their structural, functional, and performance characteristics. These yarns demonstrated favorable properties, including suitable linear density, twist, typical cellulosic functional groups as confirmed by Infrared spectroscopy, minimal hairiness, moisture transfer,...

The rapid development of fiber optic technology has enriched smart wearable technology. Standard (end emitting) polymer optical fibers (EEPOF) are linear and flexible, which is feasible to integrated them into textiles and applied to curved parts of the human body for achieving individualized functionality (e.g., safety light-emitting garments, wea...

Based on the current rapid development of electronic products, the development of light-weight, processable, environmentally friendly, long-life, durable, less corrosive, and tunable conductive composite materials with multiple applications may be the development direction of next-generation electronic devices. In this work, for the first time, we...

Given their exceptional attributes, aerogels are viewed as a material with immense potential. Being a natural polymer, cellulose offers the advantage of being both replenishable and capable of breaking down naturally. Cellulose-derived aerogels encompass the replenish ability, biocompatible nature, and ability to degrade naturally inherent in cellu...

In this work, a temperature‐regulating and antimicrobial–antioxidant fiber membrane was fabricated using coaxial electrospinning technology. The tea tree oil (TTO) emulsion used as the core solution, polyvinyl alcohol (PVA) as the shell solution for coaxial electrospinning, has been demonstrated. Compared with the original PVA fibers, the average d...

Previously established models for electromagnetic shielding effectiveness in metallized textiles have limitations in accurately forecasting the shielding effectiveness of metallized nonwovens. In response, this study embarks on a exploration aimed at formulating a mathematical model capable of predicting the electromagnetic shielding effectiveness...

Given its exceptional attributes, aerogel is viewed as a material with immense potential. Being a natural polymer, cellulose offers the advantage of being both replenishable and capable of breaking down naturally. Cellulose-derived aerogels encompass the replenish ability, biocompatible nature, and ability to degrade naturally inherent in cellulose...

This article explores the development of pullulan/polyvinyl alcohol (PVA) blends as carrier polymers for drug delivery through coaxial electrospinning, encapsulating doxorubicin (DOX), a prevalent anticancer drug. This method helps reduce the adverse effects of DOX on healthy cells. The research highlights the efficacy of PVA/pullulan cores in hind...

The demand for stretchable strain sensors is increasing due to their potential applications in emerging fields such as human motion detection, wearable electronics, and electronic skins. This review paper provides an overview of the latest developments and advanced applications of flexible carbonous conductive polymer composite strain sensors. Vari...

The development of modern materials technology has drawn attention to more application possibilities for metalized fabrics. Metalized textiles not only have electrical conductivity, antibacterial properties, and electromagnetic shielding properties of metals but also significantly improve the softness and comfort of the material after combining wit...

Phase change materials (PCMs) can have a certain temperature range during their phase transition meantime the thermal energy is adsorbed or released. PCMs are characterized to adsorb/release thermal energy during the phase transition process over a certain temperature range. PCMs have been applied in textiles for thermal regulation since the last c...

Textile substrates are pervasive in our everyday life as apparel, industrial and technical textile goods, etc., and are made up of polymers; natural, semi-synthetic, or synthetic though most of them are inherently flammable. The considerable amounts of toxic gases, smoke, heat, ashes, and melt drips produced during their burning cause immeasurable...

The research related to self-cleaning textiles has received considerable attention within the scientific community due to their potential applications in industry and daily life. During the last two decades research interests on self-cleaning textiles have grown tremendously. Over the past years, researchers have been working to mimic nature by ind...

The strain sensors are the sensors widely used for many applications, and the measurement of change in strain is called as strain sensors. Conventional metal- and semiconductor-based strain sensors are rigid, fragile, and opaque, restricting their applications in wearable electronics. Flexibility, stretchability, biocompatibility, and comfortabilit...

The performance of energy storage devices and sensors is predominantly influenced by the microstructure and composition of the electrode materials. The two-dimensional (2D) structure of graphene has attracted significant attention in the research of supercapacitors and wearable sensors due to its remarkable electrical conductivity, mechanical prope...

Multifunctional hybrid materials based on nanocellulose have gradually emerged as a substitute for petroleum-based materials. In this chapter, we briefly present the latest technology in this field, including processing, functional properties, and areas of application. For example, the combination of cellulose nanocrystals (CNCs) with different typ...

Carbon is one of the most abundant elements in the universe and exists in many forms. The allotropes of carbon have very different properties due to differences in their physical and electronic structures. The sp2 hybridized allotropes of carbon are typically formed by processing graphite on commercial scale to form graphene, fullerene, and carbon...

Since new technology domains including intelligent robotics, wearable gadgets, stretchable electronics, and body-conformable systems have developed, the demand for stretchable products has been increasing significantly. For the manufacturing of such kind of composite, several rubbers and conductive polymers including ethylene–propylene–diene monome...

The accumulation of feedstock fibrous materials as wastes for industries has led to the growing need for techno-economic and sustainable methods to utilize these fibrous wastes in various forms, towards favorable areas of applications. Over the years, numerous efforts have been taken to obtain carbon-based materials in its various allotropic forms...

With the improvement in people's quality of life, the requirements for clothing are becoming more and more comprehensive. In the past, people paid more attention to the durability of clothing and the beauty of style. Nowadays, more and more people pay attention to the function and comfort of clothing, especially its thermal comfort performance. The...

This book highlights some aspects of processing, microstructure, and properties of materials in fibrous form, or from fibers, with wide applications for textile-oriented and technically oriented advanced products. Emphasis is placed on the physical and chemical nature of the processes, describing the behavior and properties of the investigated mate...

Textile-based electromagnetic interference (EMI) shielding materials with good flexibility and high EMI shielding effectiveness (SE) are highly desirable. Still, the poor mechanical properties of textile-based EMI shielding materials limit their application. The carbon filaments (CF) combine superior mechanical properties and conductivity. Therefor...

In the face of changing outdoor environments, it is necessary for us to develop advanced textiles with thermal regulation and hydrophobic properties. In order to create a fabric with both temperature control and waterproof properties, the study adjusted the ratio of polystyrene (PS) and polyvinylidene fluoride (PVDF) to produce nanofiber membranes...

In this study, we investigated how the chemical structural properties, mechanical properties, and morphology of large‐size graphene platelets (LGPs) doped glass fabric (GF)/epoxy composites are affected by varying loading amounts of LGPs. Scanning electron microscope results revealed that the dispersion and filling effect of LGPs can improve the fl...

Durable and stable superhydrophobic surfaces have attracted a great deal of attention, where simplification of their preparation procedures is being explored. Fluorine-containing superhydrophobic surfaces typically exhibit excellent durability, but their use has been constrained by environmental hazards. The presented study reported the facile and...

Phase change materials (PCMs) textiles have been developed for personal thermal management (PTM) while limited loading amount of PCMs in textiles reduced thermal buffering effect. In this work, we proposed a sandwich fibrous encapsulation to store polyethylene glycol (PEG) with PEG loading amount of 45 wt %, which consisted of polyester (PET) fabri...

This paper investigated the washability and comfort properties of a kind of electromagnetic interference shielding material (Meftex10) with and without the parylene C coating. Parylene C can form a uniform protective film on the fabric and improve different properties of the fabric. In this paper, it will be used to improve the washability of elect...

Biomass‐derived wastes as the additive of nondegradable plastics have been paid more attention due to the ever‐growing environmental pollution and energy crisis. Herein, the spent coffee grounds (SCG) have been used as fillers in polypropylene (PP) after the heat treatment to realize its recycling utilization. The effect of the heat treatment atmos...

The state of polymeric crystalline phase is significant for its final thermal, optical, and mechanical properties. However, polymeric 3D ordered regions (crystallites) are more complicated than the crystalline structure of other materials because of the chain folding and structural disorder. To reveal and control the crystalline phase and crystalli...

Pleasant interior conditions within cars, as well as a comfortable feeling, are primary needs of car drivers to perform vital body functions during driving. In a cooler outer environment, a warming system within seats can quite feasibly maintain a realistic thermal balance in the body. An inbuilt heating system in car seats can not only provide ade...

Emission of greenhouse gases and increasing global warming have posed serious threats to the environment and survival of mankind. Construction industry is amongst the leading polluters and currently traditional materials are being used at large scale to meet the increasing demand to construct new facilities. Concrete is a widely used material in co...

Expanded graphite (EG) has been used to store phase change materials (PCM) to enhance thermal conductivity and avoid leakage. However, systematic investigation on physical structure of various embedded PCMs in EG is not reported. Besides, the effect of environment on thermal behavior of PCM/EG composites has not been investigated yet. In this work,...

Electromagnetic interference shielding clothing has been developed for people who is sensitive to electromagnetic radiation or workers working under extremely high electromagnetic radiation circumstances. The challenge was developing the fabric with good washability, durability, and air permeability. After three machine washing cycles, the electrom...

During current COVID-19 crises, the antimicrobial textiles primarily those utilized in hospital by doctors and paramedical staff have become increasingly important. Thus, there is an unmet requirement to develop antimicrobial textiles for infection control and hygiene practices. Metallic nanoparticles exhibit great effectiveness towards resistant m...

The development of environmentally friendly, multifunctional conductive membranes is an ideal candidate for future new electronic components. Some cellulose-based electronic sensors have been studied, such as pressure sensors, hydrothermal sensors, flexible sensors, optoelectronic devices, and electrochemical energy storage, etc. However, there are...

Side-emitting polymer optical fibers (SEPOFs) are known for providing a strong bright luminosity and have been applied in textile industry. Commonly, available SEPOFs with diameters of 2–3 mm provides higher luminous intensity when combined with textiles, while higher bending stiffness increases difficulty for incorporation with textiles. The SEPOF...

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...

Passive energy recycling for thermal management is one of the best energy-saving paths. However, phase change energy storage driven by temperature fluctuation is difficult to realize in some application scenarios such as winter or alpine regions. Here, novel photothermal conversion and energy storage composite was designed and fabricated to solve t...

This paper investigates the electromagnetic interference shielding effect and wearing comfort properties of a sandwich material consisting of a surface layer, an electromagnetic interference shielding layer, a thermal insulation layer, and a lining layer. The main aim is to research its potential as a winter jacket’s material for shielding electrom...

The Joule heating behavior of carbon-based materials obtained by the process of carbonization of industrial para-aramid fabric wastes are investigated in the present work. Carbonization involves a process of thermally decomposing organic material, thereby altering its physical and chemical properties to obtain carbon-rich materials that are electri...

Biomass-derived wastes as the additive of non-degradable plastics have been paid more attention due to the ever-growing environmental pollution and energy crisis. Herein, the spent coffee grounds (SCG) have been used as fillers in polypropylene (PP) after the heat treatment to realize its recycling utilization. The effect of the heat treatment atmo...

In this present work, vertically oriented ZnO nanorods (NRs) were grown at various microwave radiations (300 W, 360 W, 450 W, 540 W) through a fast and low cost microwave hydrothermal method. The effect of microwave power on the bactericidal, UV protection and thermal properties of cotton fabrics has been studied. The morphology of the ZnO NRs was...

Nonwoven Innovation Award 2022 by EDANA in Finland