композиційні матеріали

This article investigates the physicochemical properties of the high-entropy alloy MoNbTaVW and its potential application in strain gauge sensors for structural health monitoring of composite constructions, particularly wind turbines. The material’s suitability for accurate mechanical tension measurements is analyzed, taking into account its high thermal stability, resistance to corrosion, and tolerance to radiation exposure. It is demonstrated that MoNbTaVW maintains structural integrity at elevated temperatures, outperforming conventional metals commonly used in sensing systems.

Ukraine's transition to an energy-efficient economy as part of its overall transformation to EU standards is a difficult but crucial challenge. The country's post-war recovery will involve modernizing the entire infrastructure in line with EU sustainable development standards.

The contact non-equilibrium low-temperature plasma technique is used to synthesize silver nanoparticles (AgNPs) employing polyvinyl pyrrolidone (PVP) as a capping agent. Influences of PVP concentration on the formation efficiency of silver nanoparticle, their average size and stability have been studied. The synthesized silver nanoparticles had a significant antibacterial activity against two strains of Gram bacteria. Silver nanoparticles (AgNPs)-alginate composite beads with different PVP concentration were synthesized as materials for water purification.

 The properties of the filled polymer compositions largely depend on the nature and surface properties of the fillers- basalt fiber. The possibility of modifying the surface of the basalt fiber with commercial polyhexamethyleneguanidinehydrochloride and non-commercial polydiethyleneaminoguanidine - appretes, were demonstrated for the first time.