A5075689845- Polymer Nanocomposites and Properties
- Carbon Nanotubes in Composites
- Material Properties and Applications
- Tribology and Wear Analysis
- Sensor Technology and Measurement Systems
- Antimicrobial agents and applications
- Aerogels and thermal insulation
- Material Properties and Failure Mechanisms
- Synthesis and properties of polymers
- Microstructure and Mechanical Properties of Steels
- Dielectric materials and actuators
- Synthesis and Characterization of Heterocyclic Compounds
- Smart Materials for Construction
- Inorganic and Organometallic Chemistry
- Advanced Antenna and Metasurface Technologies
- Polymer crystallization and properties
- Ionic liquids properties and applications
- Fiber-reinforced polymer composites
- Environmental and Industrial Safety
- Silicone and Siloxane Chemistry
- Metallurgy and Material Forming
- Analytical Chemistry and Chromatography
- Electromagnetic wave absorption materials
- Layered Double Hydroxides Synthesis and Applications
- Mechanical Behavior of Composites
Institute of Macromolecular Chemistry
2023-2024
Donetsk Institute for Physics and Engineering named after O.O. Galkin
2024
National Academy of Sciences of Ukraine
2023
Electrothermal processes were studied in pyroresistive composites based on high-density polyethylene (HDPE) containing 8 vol.% carbon black (CB), fibers (CF), and their mixture 4 CB + CF. It is shown that the kinetic heating curves of are well described by an exponential dependence with a certain rate constant k for each type composite. After short time, equilibrium temperature Te reached sample. When applied voltage exceeds value, value decreases due to presence positive coefficient...
The effect of particle size and oxidation degree new carbon microfillers, based on coal pitch (CP) petroleum (PET) cokes, the structure as well thermal, mechanical, electrical properties composites ultrahigh molecular weight polyethylene (UHMWPE) was investigated. studied have a segregated filler distribution in UHMWPE matrix. It found that composite with smaller CP grain fraction has highest Young's modulus conductivity compared to other studied, which can be result large contribution...
Composites based on PVC containing 8 vol % carbon black (CB), fibers (CF), and their mixture in the ratio 4 %/4 (CB/CF) were studied. The filler creates an ordered, segregated structure as a framework polymer matrix. A lattice model is proposed that describes characteristics of framework. Conductivity versus content demonstrates percolation behavior, with values threshold 0.02 for PVC-CB 0.01 PVC-CF. pyroresistive properties composites have been studied; conductive releases Joule heat when...
A method for the synthesis of protic polymeric ionic liquid (PIL) a block oligomeric structure with bonds in main chain, which turns into state at temperatures below 50 °C, was developed. Ionic bonding used to form polymer chain. It formed as result neutralization reaction between oligomers telechelic terminal acidic and basic groups. new linear oligomer containing tertiary nitrogen atoms ends oligoether chain (PEO-2NEt2) obtained by α,ω-diglycidyl ether polyethylene glycol MW 1000...
A method for the synthesis of reactive aliphatic guanidine oligomers (GO) different MM by reaction oligomeric oxyalkylaliphatic diepoxide with varying ratio starting components subsequent neutralization obtained product hydrochloric acid was developed. characteristic feature structure GO is their amphiphilicity, presence hydroxy-containing fragments both at ends and inside chain. The are to further chemical transformations. characterized FTIR 1H-NMR spectroscopy, molecular weight determined...
In this work, the effect of method dispersion a reactive N-phenylaminopropyl polyhedral oligomeric silsesquioxane (NPAP-POSS, 0.025 wt.%) with eight secondary amino groups, in dicyanate ester bisphenol E (DCBE) on chemical processes occurring DCBE/NPAP-POSS blends during dispersion, as well structure, viscoelastic, thermophysical, and thermal properties heat-resistant organic-inorganic PCN/NPAP-POSS nanocomposites was investigated. The synthesis nanocomposite samples carried out two stages....
Abstract The shielding efficiency (absorption SE A , reflection R and total T ) conductivity of composites based on organic–inorganic polymer matrix (OIM) polyethylene (UHMWPE) containing mixtures (hybrid fillers) carbon black (CB), nanotubes (CNT), iron oxide (Fe 2 O 3 are studied. best results (SE = 23.1 dB, 17.7 dB) show a composite UHMWPE with segregated structure the hybrid filler CNT+CB content 10 vol%, due to high electrical composite. It is found close correlation between absorption...
The paper presents the results of complex studies influence mixtures hydrogen gas with natural in ratios 10%Н2/90%СН4 and 20%Н2/80%СН4 on operational thermophysical characteristics PE-80 polyethylene pipes their material Research was conducted an experimental stand, diagram which is attached. comprehensive strength pipes, were previously operated current distribution networks Ukraine for 15 years, after 6 months exposure, are presented. In order to indicate possible changes properties...
Here the composite polymer sorbent hydrogels were synthesized by in situ technique via free radical polymerization of acrylamide (AAm), 2-hydroxyethyl methacrylate (2HEMA) and N,N’-methylene-bis(acrylamide) crosslinker mixture presence as-prepared dispersion nickel-aluminum layered double hydroxide (NiAl-LDH). A content active NiAl-LDH filler matrix was varied a range 30 – 70 wt.%. It found high suppresses molecular mobility copolymer chains reduces beginning glass transition temperature...
The purpose of the work was to develop a new method processing samples with piezoresistive effect that will be sensitive cyclic mechanical loads. sensor material based on ground vulcanizate, which coated solution an adhesive thermoplastic carrier-polymer containing different types carbon filler. were formed by hot compaction method. As setup for experiment, adapted apparatus TMA analysis (by TA instruments) used. It found proposed composites have linear electrical response load, operate at...