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Article
Polymer Composites Based on Polylactide and Reduced Graphene Oxide
Filled composites of polylactide with reduced graphene oxide of various compositions are obtained under conditions of solid-phase mixing under the action of shear deformations. The thermophysical behavior of p...
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Article
Polymer Composites with Graphene and Its Derivatives as Functional Materials of the Future
Approaches to the synthesis of polymer composite materials filled with graphene and its derivatives, methods of introducing graphene and its functionalized forms into polymer matrices, and effect of fillers on...
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Article
Decreased Stability of the Infrastructure of Russia’s Fuel and Energy Complex in the Arctic Because of the Increased Annual Average Temperature of the Surface Layer of the Cryolithozone
The impact of facilities of various branches of Russia’s fuel and energy complex (FEC) on the Arctic permafrost zone and their stability due to climate change and the state of the upper horizons of the permafr...
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Article
Changes in Dielectric and Mechanical Properties of Spheroplastic Containing Metallized Glass Microspheres under Compressive Deformation
The article presents experimental results of changes in the dielectric and mechanical characteristics of spheroplastics based on an organosilicon elastomer and metallized glass microspheres caused by static an...
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Article
Thermodynamics of Processes in the Liquid-Metal Pyrolysis of Waste Car Tires
Thermodynamic calculations to substantiate the new liquid-metal pyrolysis technology for waste car tires have been carried out. The possibility of using liquid lead as a coolant during the pyrolysis of tires h...
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Article
Possible Mechanism of Thermal Reduction of Graphite Oxide
A mechanism for the thermal reduction of graphite oxide is proposed. The process begins with the homolysis of the C–C bond in the basal plane of graphite oxide with subsequent reactions of isomerization of the...
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Article
Explosive Reduction of Graphite Oxide
In this work, the composition of formed products and the dynamics of decomposition related to thermal explosion and at temperatures that are stepwise increased have been experimentally studied for graphite oxi...
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Article
Explosive Reduction of Graphite Oxide by Hydrazine Vapor at Room Temperature
Explosive reduction of graphite oxide aerogel at the moment of its contact with hydrazine vapor at room temperature was described. It was shown that the characteristics of the materials produced by explosive r...
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Article
Role of Structural Stresses in the Thermodestruction of Supercoiled Cellulose Macromolecules after Nitration
Thermogravimetry is used to study the thermodestruction of nitrocellulose (NC) with various nitrogen contents at various heating rates. At high degrees of nitration and high heating rates of the sample, the re...
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Article
Effects of Secondary Metabolites of Permafrost Bacillus sp. on Cytokine Synthesis by Human Peripheral Blood Mononuclear Cells
We studied the effects of secondary metabolites of Bacillus sp. isolated from late Neogene permafrost on secretion of proinflammatory (TNF-α, IL-1β, IL-8, IL-2, and IFNγ) and antiinflammatory (IL-4 and IL-10) cyt...
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Article
Synthesis and study of electrochemical properties of nanocomposites with graphene-like particles integrated into a high-porosity carbon matrix
Carbon–carbon nanocomposite (CCNC) was synthesized by introducing a dispersion of reduced graphite oxide (RGO) into the reaction medium upon the synthesis of polymer with a conjugated bond system (polyvinylene...
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Article
Chemical physics of cellulose nitration
The physical mechanisms responsible for the kinetics of nitration of cellulose raw materials of different origin have been studied. It has been shown that the main nitration rate-limiting factor is the speed o...
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Article
Self-preservation of methane hydrates produced in “dry water”
The first results of studying the possibility of self-preservation of methane hydrates produced in a “dry-water” dispersion were presented. It was shown for the first time that the anomalously low rates of dis...
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Article
Numerical-graphical method for describing the creep of damaged highly filled polymer materials
A method for describing the creep behavior until fracture of a highly filled polymer material previously damaged in preliminary tests is proposed. The constitutive relations are the relations of nonlinear endo...
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Article
Arctic permafrost: Dynamics, resources, and risks
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Article
Gas-bearing ice crystallites in clayey deposits
This work is dedicated to gas-bearing empty ice crystallites 100–500 μm in size, which were found for the first time in Paleogene diatomic clay in the upper part of the frozen sequence of Western Siberia. The ...
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Article
Influence of carbon dioxide on melting of underground ice
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Article
Law of damage accumulation and fracture criteria in highly filled polymer materials
We present the results of a large series of experiments aimed at the study of laws of damage accumulation and fracture in highly filled polymer materials under loading conditions of various types: monotone, re...
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Article
Identification of the model of nonlinear viscoelasticity of filled polymer materials in millisecond time range
Determination of mechanical characteristics of filled polymer materials in shock wave processes is of interest in calculations of the strength of these materials. The standard computation methods are based on ...
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Article
Efficiency of polymer inhibitors upon methylmethacrylate polymerization in frontal mode
It is shown that methylmethacrylate polymerization in frontal mode in the presence of a polymer inhibitor is realized in the lower part of the conversion profile. This region is depleted of polymer inhibitors ...
