The present work describes the synthesis of new versatile polyurea (PU) and polyurethane (PUR) matrices, including different chain extenders, which facilitate design distinct, tunable properties, high-performance derivatives. These polymers can be used for various defense security applications, such as coatings ballistic protection, CBRN binders energetic formulations, etc. Combining aliphatic aromatic molecules in PU or PUR structures enables with improved controllable thermo-mechanical...

Several representatives of a new class "greener" propellants, comprising polyurethanes (based on recycled PET) as the binder, phase stabilized ammonium nitrate (PSAN) eco-friendly oxidizer, and triethylene glycol dinitrate (TEGDN) energetic plasticizer, together with aluminium-magnesium alloy fuel iron oxide powder (α-Fe2O3) catalyst, were prepared investigated through specific analytical tools. Besides morphological compositional investigations, thermal behaviour ballistic properties...

Developing a controlled method for obtaining hybrid enzymatic-based interfaces sensing application require the use of multiuse, reusable sensor. By controlling interface characteristics in terms surface chemistry, thickness, and roughness, tailored response toward various toxic compounds can be obtained, regarding both materials used as active surfaces fabrication methods. Herein, we report preliminary study on using laser-based (i.e., matrix-assisted pulsed laser evaporation, or MAPLE)...

The present work investigates, for the first time, synthesis and properties of some nanocomposite (NC) hydrogels obtained by aqueous solution free radical polymerization N-vinylpyrrolidone (NVP) in presence Laponite XLG (XLG) as a crosslinker, comparison with corresponding prepared using two conventional crosslinking divinyl monomers: N,N'-methylenebisacrylamide (MBA) tri(ethylene glycol) ether (DVE). structure were studied FTIR, TEM, XRD, SEM, swelling rheological compressive mechanical...

Engineering of scaffolds for bone regeneration is often inspired by the native extracellular matrix mimicking its composite fibrous structure. In present study, we used low loadings diatomite earth (DE) biosilica to improve potential gelatin electrospun fibrillar microenvironments. We explored effect increasing DE content from 1 % 3 and 5 %, respectively, on physico-chemical properties denoted FG_DE1, FG_DE3, FG_DE5, regarding aqueous media affinity, stability under simulated physiological...

This study describes the development of hydrogel formulations with ionic crosslinking capacity and photocatalytic characteristics. The objective this research is to provide an effective, accessible, “green”, facile route for decontamination chemical warfare agents (CWAs, namely blistering agent—mustard gas/sulfur mustard (HD)) from contaminated surfaces, by decomposition entrapment CWAs their degradation products inside films generated “on-site”. notorious agent HD was successfully achieved...

Shear thickening fluids (STFs) have garnered attention as potential enhancers of protective capabilities and for the optimization Kevlar® armor design. To assess possible shear properties application in ballistic protection, ten formulations were developed by employing polyethylene glycol (PEG) or polypropylene (PPG), along with fumed silica Aerosil HDK®. Rheological characterization facilitated identification displaying behavior. The integration selected into Kevlar®-based composites was...

This study describes a simple, practical, inexpensive, improved, and efficient novel method for obtaining polyurea-polyurethane-multiwall carbon nanotubes (MWCNTs) nanocomposites with enhanced mechanical properties, their experimental testing in dynamic regime. SEM micro-CT investigations validated the homogeneity of nanocomposite films uniform dispersion nanofiller inside polymeric matrix. The measurements (TGA, DSC, DMA, tensile tests) revealed improved thermal properties these new...

This study presents the functionalization and characterization of graphene electromagnetic interference (EMI) attenuation capacity in epoxy-nanocomposites. The modification involved both small molecules polymers for compatibilization with epoxy resin components to provide EMI shielding. TGA RAMAN analyses confirmed synthesis a different layer thickness sheets. Graphene samples thicknesses (monolayer, few layers, multilayer) were selected further employed coating formulation. obtained...

Activities specific to the military field, regarding instruction process or missions in operating theatres, require personnel be exposed a series of toxic chemical compounds, with effects ranging from short long term. European legislation environmental protection and employee health has become stricter it directly influences choice materials that will turned into ammunition. Most energetic ammunition contain compounds whose synthesis decomposition involves release high toxicity products...

The present work reveals a comprehensive decontamination study on real and simulated biological chemical warfare agents (BCWA). emphasis was evaluating the antimicrobial activity against agents, such as Bacillus anthracis, also capacity of neutralizing mustard gas or soman, by employing three different types organic solutions enriched with ZnO, TiO2, zeolite nanoparticles, specially designed for applications. decontaminating BCWA evaluated through specific investigation tools, including...

Skin infections are frequently treated via intravenous or oral administration of antibiotics, which can lead to serious adverse effects and may sometimes contribute the proliferation resistant bacterial strains. represents a convenient pathway for delivering therapeutic compounds, ensured by high number blood vessels amount lymphatic fluids in cutaneous tissues, systematically connected rest body. This study provides novel, straightforward method obtain nafcillin-loaded photocrosslinkable...

Novel polyurethane-based binders, specifically designed for environmentally responsible rocket propellant composites, were obtained by employing the polyester-polyols that resulted from degradation of polyethylene terephthalate waste. A new class "greener" propellants, comprising polyurethanes (based on recycled PET) as binder, phase stabilized ammonium nitrate (PSAN) eco-friendly oxidizer, and triethylene glycol dinitrate (TEGDN) energetic plasticizer, together with aluminum fuel Fe2O3...

In the context of imminent threats concerning biological and chemical warfare agents, aim this study was development a new method for decontamination, employing non-toxic, film-forming, water-based biodegradable solutions, using nano sized reagent together with bentonite as trapping agents contaminants. Bentonite-supported nanoparticles Cu, TiO2, Ag were successfully synthesized dispersed in polyvinyl alcohol (PVA)/glycerol (GLY) aqueous solution. The decontamination effectiveness proposed...

In this study, five laboratories, namely, BRML (Romania), TUBITAK UME (Turkey), IMBIH (Bosnia and Herzegovina), BAM (Germany), DTI (Denmark), developed validated analytical procedures by ICP-MS, ICP-OES, MWP-AES, WD-XRF, ID-MS for the determination of inorganic impurities in solid liquid biofuels, established budget uncertainties, method determining amount ash measurement range 0–1.2% with absolute repeatability less than 0.1% reproducibility 0.2% (according to EN ISO 18122). order create...

Casein is a micellar protein rich in glutamic and aspartic acids as well phosphoserine. Considering its native affinity for calcium the connection of sub-micelles through phosphate nanoclusters, this holds promise stimulating biomimetic mineralisation phenomena direct binding with mineral phase hard tissues. In work we prepared new hybrids based on casein embedded poly(2-hydroxyethyl methacrylate)-polyethyleneglycol diacrylate (PHEMA-PEGDA) hydrogel. The resulting materials were investigated...

Ballistic protection is a matter of interest requested by civilian as well military needs.The last decade has witnessed an increase in the use light weight and efficient armour systems.These panels may be used for body vehicle against small calibres or to enhance level heavier vehicles with decreasing maintaining their penalty.Ultra high molecular polyethylene material applications.The authors designed made hot-pressed Tensylon ® different configurations thin steel sheets backing shield...

During conûict situations, the combat staff is exposed to a wide variety of aggressions, such as temperature and pressure variations dynamic impacts (from ammunition or fragments). Textiles used in manufacture military uniforms devices have always played an important role defending against these hazards, adequate level individual protection equipment required. In this respect, novel fibre-reinforced polymer composite materials for application, reducing blunt trauma ballistic equipment, been...

The issue of heavy metal and radionuclide contamination is still causing a great deal concern worldwide for environmental protection industrial sites remediation. Various techniques have been developed surface decontamination aiming high factors (DF) minimal impact, but strippable polymeric nanocomposite coatings are some the best candidates in this area. In study, novel radionuclides were based on film-forming ability polyvinyl alcohol, with remarkable retention capacity bentonite nanoclay,...

This paper describes the design of photocrosslinkable interpenetrated network hydrogel peelable films, presenting remarkable ability to successfully neutralize and safely remove from contaminated surfaces two most notorious highly toxic real chemical warfare agents (CWAs)─the blistering agent mustard gas (HD) nerve soman (GD). The goal this study was develop an innovative method for CWA decontamination that allows fast efficient remediation CWA-affected sites by entrapping compounds inside...

This study presents the formulation and application of strippable coatings for entrapment removal heavy metals (HMs) radio nuclides (RNs). The “green” formulations involve use a water-based solution consisting synthetic biodegradable polymer, polyvinyl alcohol (PVA), together with natural polymer (sodium alginate) as matrix bentonite reinforcing agent cation exchange capacity. Four chelating agents comprising two classical (ethylenediaminetetraacetic acid (EDTA),...

The increasingly harsher and more complex international European environmental legislation drives the current development of “greener” energetics materials munitions. aerospace defense industries rely on extensive research in formulation scale-up production polymer-bonded explosives (PBX). In this context, paper aims to present a versatile method for obtaining “green” PBX formulations based two high (hexogen (RDX) octogen (HMX)) acrylic acid—ethyl acrylate copolymeric binders. This study...

Due to its chemical and mechanical properties, polyurea gains more interest in military applications. In this study, carbon nanotubes were processed as coating polymer composites for ballistic plates and/or packages, order increase their protection potential, meanwhile maintaining an appropriate weight economic accessibility. respect, the composite material was layered on various commercially-available materials thicknesses further, performances of products obtained tested assess behavior...

Abstract Since 2009 the Organization for Prohibition of Chemical Weapons (OPCW) has been organizing and conducting confidence-building exercises biomedical samples analysis. The purpose was to begin continue building expertise in analysis relevant investigation incidents alleged use chemical weapons. exercise consists a number which laboratory will be request identify determine approximate concentration specified set metabolic products Convention scheduled chemicals. paper provides an...