-
Article
Tribological Properties of Compositions Prepared by In Situ Polymerization, Based on Ultrahigh Molecular-Weight Polyethylene and Quasicrystalline Al–Cu–Fe
Samples of composites of ultra-high molecular-weight polyethylene (UHMWPE) with addition of 2.24, 5, and 8.1 wt % quasicrystalline Al–Cu–Fe alloy have been prepared by in situ polymerization. Friction and wear...
-
Article
Tribological, Physicomechanical, and Other Properties of Composites Based on Ultra-High Molecular-Weight Polyethylene, Polytetrafluoroethylene, and Еthylene–Tetrafluoroethylene Copolymer with Quasicrystalline Filler Al–Cu–Fe
An urgent problem in improving polymer-based tribotechnical materials is to reduce the friction and wear coefficients with preservation of sufficiently high physicomechanical characteristics of material. This ...
-
Article
Surface Dilatational Rheology of Carboxyl-Containing Dimethylsiloxane Oligomers in Langmuir Films at the Air-Water Interface
The study of the viscoelastic properties of interphase layers, which can be modeled in Langmuir films, is of interest for estimating the stability during emulsification and stabilization of heterophase systems...
-
Article
Effect of Low-Molecular-Mass Additives on Structure and Properties of Nonwoven Materials Prepared by Electrospinning of Polypropylene Melts
Nonwoven materials based on polypropylene with up to 2 wt% added sodium nitrate, which allowed the fiber diameter to be reduced by 40%, were studied. The composition and structure of the materials were charact...
-
Article
Production of Nanofiber Materials Based on Macromolecular Hyaluronic Acid by Electrospinning
Hyaluronic acid-based nanofiber scaffolds imitating the natural extracellular matrix, which is promising for use in tissue engineering, have been prepared by electrospinning. Hyaluronic acid is part of many or...
-
Article
Effect of Friction on the Degree of Crystallinity of Composite Materials Based on Ultra-high-molecular-weight Polyethylene and Polytetrafluoroethylene with Quasicrystalline Filler Al–Cu–Fe
X-ray diffraction (XRD) analysis of composite samples based on ultra-high-molecular-weight polyethylene (UHMWPE) and polytetrafluoroethylene (PTFE), with a quasicrystalline filler Al–Cu–Fe, has been carried ou...
-
Article
Rheological Behavior of Polydimethylsiloxane Langmuir Layers at the Air-Water Interface
The rheological behavior of Langmuir layers of polydimethylsiloxanes with various molecular weights was studied by using barrier oscillation method. The viscous and elastic components of thin layers of organos...
-
Article
Dielectric Properties of Halloysite Nanotube Suspensions in Polydimethylsiloxane
The frequency dependences of electrical conductivity with both real and imaginary components of a dielectric permittivity of polydimethylsiloxane oil suspensions filled by halloysite nanotubes having different...
-
Article
Electron Emission Properties of Self-Assembling Nanodiamond‒Polymer Nanocomposite Coatings
The formation of thin-film coatings from detonation nanodiamond (DND) suspensions on atomically ordered conducting Ni–W substrates by self-assembly in an evaporating aqueous solution using the spin coating tec...
-
Article
Orientation of Layered Aluminosilicates Particles with a High Aspect Ratio in Paraffin under an Electric Field
The electrorheological effect intensity is significantly influenced by the strength of the structure formed in an electric field due to the orientation of dispersed phase particles with respect to force lines....
-
Article
Electrospinning of Nonwoven Fabrics from Polypropylene Melt with Additions of Stearates of Divalent Metals
It was shown that by adding up to 10 wt. % of the stearates of mono- and divalent metals sodium, magnesium, calcium, or zinc it is possible to obtain fibers with diameters of 1-5 μm from a polypropylene melt, ...
-
Article
Composite Material Based on Polytetrafluoroethylene and Al–Cu–Fe Quasi-Crystal Filler with Ultralow Wear: Morphology, Tribological, and Mechanical Properties
Samples of composites with polytetrafluoroethylene as the matrix and a powder of 0, 1, 2, 4, 8, 16, and 32 vol % Al–Cu–Fe quasi-crystal as the filler are prepared. Electron microscopy studies of the sample str...
-
Article
Self-Assembling Polymer–Nanodiamond Composite Coatings for Vacuum Cathodes
The principles of the formation of detonation nanodiamond–polymer thin-film nanocomposites which are promising materials for highly cost-effective field electron vacuum cathodes are studied for the first time....
-
Article
Influence of Molecular Characteristics of Chitosan on Properties of In situ Formed Scaffolds
Effects of molecular weight and degree of deacetylation of chitosan on the properties of chitosan/beta-glycerophosphate situ forming gel were investigated. Storage modulus grows with a decrease of the degree o...
-
Article
Nonwoven materials based on polyethylene oxide for use as a polymer electrolyte in memristive devices
Nonwoven materials were prepared by electrospinning from solutions of polyethylene oxide in water and in a 0.1 M aqueous lithium perchlorate solution. Addition of lithium perchlorate increases the conductivity...
-
Article
Tribological and mechanical properties of composites based on ethylene-tetrafluoroethylene and quasicrystalline Al−Cu−Fe filler
Samples of composites, in which ethylene-tetrafluoroethylene copolymer is used as a matrix and quasicrystalline Al−Cu−Fe powder as a filler with 0, 1, 2, 4 and 8 vol % concentrations, are prepared. Electron mi...
-
Article
Effect of low molecular additives on the electrospinning of nonwoven materials from a polyamide-6 melt
The effect of low molecular additives on the structure and properties of polyamide-6-based nonwoven materials obtained via electrospinning from a melt is studied. The introduction of up to 10% salts of higher ...
-
Article
Effect of a quasicrystalline filler on the tribological properties of a composite based on ultrahigh-molecular-weight polyethylene
We prepare composites in which ultrahigh-molecular-weight polyethylene (UHMWPE) is used as a matrix and quasicrystalline Al–Cu–Fe powder is used as a filler with concentrations of 1, 10, 30, and 50 vol %. The ...
-
Article
Electrospinning of Non-Woven Materials from the Melt of Polyamide-6 with Added Magnesium, Calcium, and Zinc Stearates
Polyamide-6 fibres of diameter 2-3 μm could be produced from the melt by adding (2-10 mass%) divalent metal (Mg, Ca, Zn) stearates, which caused the viscosity to decrease and the electrical conductivity of the...
-
Article
Rheological Features of Fiber Spinning from Polyacrylonitrile Solutions in an Electric Field. Structure and Properties
Spatially ordered fibers of diameter 260-990 nm were produced by electrospinning from polyacrylonitrile (PAN) solutions. The influence of the rheological properties of solutions of PAN and its copolymers was i...
