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Search results for: ELASTOMERIC POLYMER
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Experimental Study on Polymer Mass Used to Repair Damaged Structures
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Impact of Selected Operating Conditions on the Optical Properties of Polymer Shields
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Prussian Blue Analogues Cubes in the Organic Polymer Electrospun Fibres
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Raman system for on-line monitoring and optimisation of hybrid polymer gelation
PublicationW artykule przedstawiono system do monitorowania ramanowskiego reakcji żelowania w procesie zol-żel syntezy organiczno-nieorganicznych polimerów hybrydowych. System pomiarowy umożliwił wykonywanie pomiarów zdalnych, bez wkonieczności wprowadzania jego elementów do wnętrza komory reakcyjnej. Konstrukcja systemu zapewniła szeroki zakres pomiarowy od 200 do 3500 cm-1, przy odpowiednio wysokiej czułości i wyeliminowniu wpływu fluorescencji....
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Raman system for monitoring of dye doping to hybrid polymer network
PublicationZrealizowano i przedstawiono system ramanowski do zdalnego monitorowania procesu zol-żel, dedykowany do monitorowania procedury wprowadznia cząstek barwnika do sieci polimeru hybrydowego. System umożliwia wykonywanie pomiarów zdalnych, bez zakłócania i przerywania przebiegu procesu technologicznego. Zademonstrowano i skomentowano wyniki pomiarów dla przykładowego procesu.
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Recent Progress in Polymer Waste-Derived Porous Carbon for Supercapacitors
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Application of polymer element in reduction of temporary steel grandstand vibrations
PublicationThe numerical analysis focused on reduction of vibrations of a temporary steel scaffolding grandstand has been conducted in this paper. These types of structures are regularly subjected to dynamic loads which, in conjunction with light and quite slender structural members, may induce dangerous vibrations. To increase their safety, temporary steel grandstands are usually strengthened with the diagonal stiffeners of tubular cross...
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Experimental study on the effectiveness of polymer dampers in reduction of structural vibrations
PublicationVibrations of civil engineering structures, generated by dynamic loads, may be very dangerous to the structures themselves as well as may have significant influence on human perception and comfort. A number of different methods have been proposed in order to minimize such situations. This concern newly designed structures as well as those which dynamic properties have to be modified due to problems with excessive vibrations. One...
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Spectroscopic investigations into degradation of polymer membranes for fuel cells applications
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Thermal properties of dense polymer-derived SiCN(O) glasses
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Polyaryletherketone polymer nanocomposite engineered with nanolaminated Ti3SiC2 ceramic fillers
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Multichannel taste sensors with lipid, lipid like – polymer membranes
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Polymerization and Structure of Opposing Polymer Brushes Studied by Computer Simulations
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Vibrational Spectroscopy in Analysis of Stimuli-Responsive Polymer–Water Systems
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Experimental study on effectiveness of polymer dampers in reduction of structural vibrations
PublicationVibrations of civil engineering structures, generated by dynamic loads, may be very dangerous to the structures themselves as well as may have significant influence on human perception and comfort. A number of different methods have been proposed in order to minimize such situations. This concern newly designed structures as well as those which dynamic properties have to be modified due to problems with excessive vibrations. One...
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Compliance tests of the polymer layers used as hydrodynamic bearing coatings
PublicationOperational experience and scientific investigations results showed that polymer lined hydrodynamic bearings can withstand more severe operating conditions compared than white metal bearings. PTFE and PEEK-based coatings are the most frequently used as Babbitt alternatives. Both polymers differ significantly from the each other in material properties. According to catalogue data compression modulus of PTFE, it is about an order...
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Experimental study on polymer mass used to repair damaged structures
PublicationA new method of repairing damaged structures by injecting the cracks with specially designed polymer mass (flexible two-component grout based on polyurethane resin) has been recently proposed. The technique is mainly dedicated to damaged masonries, especially historical structures where minimum intervention is permitted. The cracks are filled with the special injection, forming the flexible joints bonding the disrupted structural...
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Effect of polymer fibres reinforcement on selected properties of asphalt mixtures
PublicationThe paper presents selected results of the research program concerning fibre reinforced asphalt concrete. Aramid-polyalphaolefin fibres was used in this study. Selected properties responsible for low temperature cracking and resistance to permanent deformation are presented in this paper. Low temperature cracking susceptibility was evaluated with the results obtained from bending test of rectangular beams with constant rate of...
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Experimental and numerical analysis of an aluminum cantilevered beam with polymer adhesive
PublicationIn this paper, experimental and numerical investigation on a composite cantilevered aluminum beam has been conducted. The subject of the study consists of two plain aluminum elements bonded with polymer adhesive of different thickness. It has been proven in the previous study that this kind of material has high damping properties. During an experimental investigation, value of damping ratios have been obtained. The aim of a numerical...
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The Effectiveness of Polymer Damper in Damage Reduction of Temporary Steel Grandstand
PublicationA large number of accidents involving damage of temporary grandstands during different types of events were observed in the past. The aim of the paper is to analyse numerically the effectiveness of a polymer damper in damage reduction of a temporary steel scaffolding grandstand exposed to dynamic load due to jumping. The element has been installed as a diagonal one at the back part of the structure. The method has been compared...
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Recent advances in compatibilization strategies of wood-polymer composites by isocyanates
PublicationWood-polymer composites technologies are gaining more and more attention in the scientific community, positively affecting the increase in their industrial applications, for example, automotive, building, 3D printing, etc. Many research works are focused on the improvement in matrix–lignocellulosic filler interactions to produce highly filled composites with satisfying performance properties. In this field of research, using isocyanates...
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Copper-based 2D-coordination polymer as catalyst for allylation of aldehydes
PublicationA copper-tartrate, [Cu2(Tart)2(H2O)2]·4H2O, was synthesized at room temperature in aqueous media using copper chloride and D-tartaric acid. The compound crystallizes in the monoclinic system P21 space group and was characterized by infrared spectroscopy, thermogravimetry, X-ray powder diffraction and the results are in good agreement with the single crystal...
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Recent Advances in Development of Waste-Based Polymer Materials: A Review
PublicationLimited petroleum sources, suitable law regulations, and higher awareness within society has caused sustainable development of manufacturing and recycling of polymer blends and composites to be gaining increasing attention. This work aims to report recent advances in the manufacturing of environmentally friendly and low-cost polymer materials based on post-production and postconsumer wastes. Sustainable development of three groups...
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A New Microwave Ceramic – Polymer Composite with 0-3 Connectivity
PublicationGoal of the present research was to fabricate and study two-phase BiNbO4//PVDF composites with 0-3 connectivity. Such composite consists of there-dimensionally connected polymer matrix loaded with dielectric ceramic particles. In the present case BiNbO4 powder acted as an active phase (dispersed phase) whereas polyvinylidene fluoride (PVDF) acted as a non-active (passive) phase (matrix). BiNbO4//PVDF composites with the volume...
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Polymer humidity sensors deposited directly on PCB laminate substrate
PublicationW artykule przedstawiono wyniki badań stabilności polimerowych czujników wilgotności zbudowanych na podłożu z laminatu PCB
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Nonlinear free and forced vibrations of a dielectric elastomer-based microcantilever for atomic force microscopy
PublicationThe majority of atomic force microcode (AFM) probes work based on piezoelectric actuation. However, some undesirable phenomena such as creep and hysteresis may appear in the piezoelectric actuators that limit their applications. This paper proposes a novel AFM probe based on dielectric elastomer actuators (DEAs). The DE is modeled via the use of a hyperelastic Cosserat model. Size effects and geometric nonlinearity are included...
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Morphology and mechanical properties of polyamide/clay nanocomposites toughened with NBR/NBR-g-GMA: A comparative study
PublicationThis work highlights the importance of nanoclay dispersion state in the nanocomposites containing polyamide 6 (PA6), nanoclay and elastomers as well as clay localization at the interface of thermoplastic/elastomer. Morphology and mechanical properties of a series of nanocomposites containing acrylonitrile butadiene rubber (NBR), glycidyl methacrylate-grafted NBR (NBR-g-GMA), and combined NBR/NBR-g-GMA were compared and discussed...
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Conducting polymers electrodeposited on active metals
PublicationPraca poświęcona studiom literaturowym doniesień dotyczących polimerów przewodzących, osadzanych na metalach aktywnych. Zastosowanie polimerów przewodzących jako warstw antykorozyjnych oraz elektrokrystalizacja metali na polimerach przewodzących zostały zebrane i przedstawione w tej pracy.
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Heterozłącze planarne polimer-materiał małocząsteczkowy
PublicationPolimerowe ogniwa fotowoltaiczne ze względu na szereg zalet cieszą się dużym zainteresowaniem. Praca ta zawiera krótki opis zasady działania tego typu urządzeń oraz podstawowych zjawisk zachodzących we wnętrzu materiałów organicznych i na ich złączach. Przedstawiona została struktura heterozłącza planarnego i objętościowego oraz ich porównanie, z uwagi na fakt, że są to dwa najczęściej stosowane w ogniwach fotowoltaicznych typy...
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Conducting polymers for biodegradable metallic implants
PublicationNowadays permanent metallic cardiovascular stents are long-term implants. The long-time presence of such an implant in human body can cause overgrowth of tissue within the treated portion of the vessel, blockage of the circulatory system and many other clinical complications, such as thrombosis, prolonged physical irritations or chronic inflammation. Therefore, in recent years, there is an interest to create biodegradable metallic...
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Polymers for burn dressings and skin substitutes
PublicationSkin burns belong to the group of the most complex injuries due to convoluted skin structure which includes nerve cells, muscles, sweat and sebaceous glands and blood vessels. Both on the market and at the research stage, there are many different dressing and skin substitutes proposals that utilize various materials and active substances. This chapter focuses on summarizing and describing the most popular polymer-based commercial...
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Effect of E-Beam Irradiation on Thermal and Mechanical Properties of Ester Elastomers Containing Multifunctional Alcohols
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Structure-Property Relationship and Multiple Processing Studies of Novel Bio-Based Thermoplastic Polyurethane Elastomers
PublicationCurrently, the growing demand for polymeric materials has led to an increased need to develop effective recycling methods. This study focuses on the multiple processing of bio-based thermoplastic polyurethane elastomers (bio-TPUs) as a sustainable approach for polymeric waste management through mechanical recycling. The main objective is to investigate the influence of two reprocessing cycles on selected properties of bio-TPUs....
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Interfacially modified LDPE/GTR composites with non-polar elastomers: From microstructure to macro-behavior
PublicationThis paper provides some new insights into the mechanism of interaction and modifications in thermoplastic composites based on low density polyethylene (LDPE), ground tire rubber (GTR) and non-polar elastomer. The composites were prepared using a co-rotating twin-screw extruder at variable LDPE/GTR ratio and constant elastomer content. Two types of commercial elastomer were applied: styrene-butadiene-styrene (SBS) block copolymers (Kraton®)...
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Electrochemical and photoelectrochemical properties of the interface between titania nanotubes covered by conducting polymer in aqueous by conducting polymer in aqueous electrolytes – The effect of various geometry and electrolytes concentration
PublicationIn the present work we show the impact of nanotubes (NTs) geometry of titania utilized as a substrate in organic-inorganic systems acting as a p-n junction on efficient conversion of radiation energy into electrochemical energy. The electrolytic bath composition and electrolysis conditions were controlled in order to obtain TiO2NTs of various geometry as a result of electrochemical oxidation of titanium foil. The electrode material...
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Application of the X-ray micro computed tomography to the analysis of the structure of polymeric materials
PublicationIn this paper the application of X-ray micro-computed tomography (micro-CT) as a non-destructive testing method of polymeric materials is presented. Increasing applicability of polymers in variedend-use industries such as automotive, building and construction, consumer goods, and packaging is propelling the growth of the global polymer processing market. However, controlling of the polymer structure is one of the most important...
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Assessment of microstructure, physical and thermal properties of bitumen modified with LDPE/GTR/elastomer ternary blends
PublicationLDPE/GTR/elastomer ternary blends with variable LDPE/GTR ratio and constant elastomer content were prepared via melt-compounding. Obtained LDPE/GTR/elastomer blends were applied as thermoplastic modifiers into bitumen. Microstructure, physical and thermal properties of the modified bitumen were determined. It was observed that chemical composition of LDPE/GTR/elastomer blends has significant influence on their density and rheological...
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Imprinted polymer particles for iron uptake: Synthesis, characterization and analytical applications
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Development of a Formability Prediction Model for Aluminium Sandwich Panels with Polymer Core
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CARBOCHAIN POLYMER-GLUCOSE HYBRIDS: SYNTHESIS, THERMAL/MECHANICAL PROPERTIES AND BIODEGRADABILITY
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Characterization of PVC-based polymer inclusion membranes with phosphonium ionic liquids
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Radiation therapy dosimetry using magnetic resonance imaging of polymer gels
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Polymer films based on silk fibroin and collagen - the physico-chemical properties
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Characteristics of Hybrid Bioglass-Chitosan Coatings on the Plasma Activated PEEK Polymer
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Effect of low-temperature plasma on chitosan-coated PEEK polymer characteristics
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Metal heksacyanoferrate network synthesized inside polymer matrix for electrochemical capacitors
PublicationPrzedmiotem publikacji jest charakterystyka elektrochemiczna polimeru przewodzącego (poli(3,4-etylenodioksytiofenu)) modyfikowanego błękitem pruskim oraz jego pochodnymi, pochodną kobaltową oraz pochodną niklową. Materiały są stabilne elektrochemicznie, a uzyskane wartości pojemności elektrycznej pozwalają na wykorzystanie ich przy konstrukcji kondensatorów elektrochemicznych.
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On the possibility of using liquid or lipid - polymer membrane systems as taste sensors
PublicationMembrany ciekłe z anionowym surfaktanetem mogą być użyte do rozpoznawania molekularnego substancji smakowych ale nie mogą stanowić podstawy sensora smaku głównie z powodu chaotycznych zachowań. Przeciwnie membrany polimerowo-lipidowe mogą być zastosowane w sensorze smaku do badania jakości pewnych napojów handlowych.
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Investigation of Taste Substances by five Channel Lipid-Polymer Membrane Sensor.
PublicationBadano substancje o różnych stężeniach należące do czterech klas smaku za pomocą pięcio-kanałowego sensora opartego o elektrody jonoselektywne z różnymi membranami polimerowo-lipidowymi. Stwierdzono, że sensor jest czuły na zmiany stężeń chlorowodorku chininy, kawsu cytrynowego i chlorku sodu, przeciwnie jak w przypadku sacharozy. Na podstawie tych wyników można przypuszczać, że sensor może być zastosowany do roztworów składających...
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Influence of the Addition of Recycled Aggregates and Polymer Fibers on the Properties of Pervious Concrete
PublicationThe aim of the study was to check the possibility of reusing aggregate from recycled concrete waste and rubber granules from car tires as partial substitution of natural aggregate. The main objective was to investigate the effects of recycled waste aggregate modified with polymer fibers on the compressive and flexural strength, modulus of elasticity and permeability of pervious concrete. Fibers with a multifilament structure and...
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Chiral Diketopyrrolopyrrole-Helicene Polymer With Efficient Red Circularly Polarized Luminescence
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