anufacture or treatment of nano-structures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units (B82B3)

B82   Nano-technology(3676)
B82B3                 anufacture or treatment of nano-structures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units(1983)
ethod of obtaining copper - graphen composite // 2642800
FIELD: chemistry.SUBSTANCE: water-alcohol solution of copper sulfate is prepared, ethyl alcohol is added to it to a concentration of 37.5-42.5 ml/l, acidified to pH of 1-2 and divided into two parts. A suspension is prepared from one part, in which graphite-graphene mixture is added in an amount of 0.05-0.5 g/l and surfactants Pluronic F-127 or polyacrylic acid in an amount of 25-100 ppm, dispersed for 15-20 min. The electrochemical deposition cell is assembled, placed in a copper solution and the working voltage is fed for 20-30 minutes. Then the two-electrode cell is moved to the obtained graphene-containing suspension with surfactants and the working voltage is fed to the electrodes for 120-180 min. After the specified aging in the solutions, the electrodes are dried, and the resulting composite "copper-graphene" is separated, which has a high uniformity and crystallinity, a small crystallite size, a uniform distribution of graphene in the matrix.EFFECT: increase of the material microhardness.1 cl
ethod of producing silicon carbide // 2642660
FIELD: chemistry.SUBSTANCE: silicon carbide is obtained from a charge comprising nanopowder of silicon-containing (SiO, SiO2, H2SiO3) carbon-containing (a carbohydrate of the general formula Cn(H2O)m, where n ≥12; m=n-1, a polyhydric alcohol of the general formula CnH2n+2On, where n≥2, aldehyde or ketone derivatives of polyhydric alcohols of the general formula (CH2O)n, where n≥3, components, prepared in deionized water, with the subsequent stepwise heating in three stages: up to a temperature of 145-195°C with the maintaining for 1.5-3 hours, up to 800-1000°C, with the maintaining for 0.4-1 h, and up to 1450-1650°C, with the maintaining for 1-1.5 hours.EFFECT: increasing the purification degree and the yield product of the order of 80-85% 3 etc.3 ex
ethod for producing water dispersion of carbon nanoparticles from shungit // 2642632
FIELD: chemistry.SUBSTANCE: first the shungite rock is chopped. The obtained shungite powder is poured with water at a ratio of the weight of the shungite powder to the mass of water of 1: 2 and left to stand for three days, after which it is filtered. The remaining powder of shungite is dried and dispersed in water using grinding bodies with a diameter of 1-3 mm at a ratio of the mass of the shungite powder to the mass of water and the mass of grinding bodies 1: 4: 3 for 60 minutes. Then the mixture is filtered, the shungite powder is dried. Then dispersing and filtering the shungite powder is carried out in water by ultrasound in the ratio of the mass of the shungite powder to the mass of water 1:20, a frequency of 22 kHz and power of 1000 W for 35 minutes. The resulting water dispersion of carbon nanoparticles is centrifuged for 15 minutes at 10000 rpm.EFFECT: increasing the stability of water dispersion of carbon nanoparticles during storage.2 tbl

Adhesive composition for manufacturing chipboards and wood products // 2642568
FIELD: chemistry.SUBSTANCE: adhesive composition contains components with the following ratio, wt %: binder urea-formaldehyde resin (97.41-98.36), a curing agent of ammonium chloride (0.64 to 1.59), an amorphous modifier of silicon dioxide (0.05-1.00). Silicon dioxide is presented in the form of a powder with nanoporous structure of particles and their specific surface of 120 to 400 m2/g.EFFECT: increasing the strength of the adhesive composition and reducing the consumption of the modifier.2 dwg, 1 tbl

ethod of producing l-arginine nanocapsules // 2642233
FIELD: nanotechnologies.SUBSTANCE: invention relates to nanotechnology, namely to the method of producing L-arginine nanocapsules in sodium carboxymethyl cellulose. Method is characterized in that L-arginine is slowly added to the suspension of sodium carboxymethyl cellulose in methanol in the presence of 1 % of E472c preparation as a surfactant with stirring at 1,000 rpm, then 10 ml of petroleum ether is added, obtained suspension is filtered and dried at room temperature, the core/shell weight ratio being 1:1 or 1:3, or 5:1. Method ensures the simplification and acceleration of the process of producing nanocapsules, reduction in losses in the production of nanocapsules, and can be used in the food industry.EFFECT: method ensures the simplification and acceleration of the process of producing nanocapsules, reduction in losses in the production of nanocapsules, and can be used in the food industry.1 cl, 2 dwg, 4 ex

ethod of producing aecol nanocapsules // 2642232
FIELD: nanotechnologies.SUBSTANCE: invention relates to nanotechnology, particularly to method of producing AECOL nanocapsules in a xanthan envelope. Method is characterized in that AECOL is added to a suspension of xanthan gum in benzene in the presence of 0.01 g of E472c as a surfactant,then it is mixed at 1300 rpm, after 10 ml of carbon tetrachloride are added, after which obtained suspension is filtered and dried at room temperature, ratio of nucleus/shell is 1:1, or 1:3 or 3:1 or 1:5.EFFECT: method ensures the simplification and acceleration of the process of producing nanocapsules, reduction in losses in the production of nanocapsules, and can be used in the pharmaceutical and food industries.1 cl, 1 dwg, 5 ex
ethod of producing nanocapsules of dihydroquercetin in carrageenan // 2642230
FIELD: nanotechnologies.SUBSTANCE: invention relates to nanotechnology. Method for preparing nanocapsules of quercetin or dihydroquercetin in a coat of carrageenan is described. According to this method, quercetin or dihydroquercetin is added to a suspension of carrageenan in benzene in presence of 0.01 g of E472c as surfactant with stirring at 1000 rpm. Then, petroleum ether is added. Obtained suspension of nanocapsules is filtered off and dried at room temperature. Mass ratio of the core: the shell is 1:3 or 1:1.EFFECT: method provides simple and fast process of producing nanocapsules and increases mass output.1 cl, 2 dwg, 4 ex

ethod of obtaining nanostructured gas sensor for ozone // 2642158
FIELD: measuring equipment.SUBSTANCE: invention relates to technology for producing high-sensitivity resistive gas sensor for ozone based on oxide films in the system In2O3 – SnO2. Method for obtaining a nanostructured gas sensor for ozone involves the joint crystallization of salt solutions or their coprecipitation, in this case, solutions of precursor salts are used as initial reagents (SnSO4, In(NO3)3*xH2O), oxide powders are obtained by the sol-gel method of co-crystallization and coprecipitation, after which the resulting powders are calcined at 120–400 °C and fired at 650 °C to obtain a solid solution based on In2O3 with the size of NPD ~ 27–29 nm, then a paste with an ethylcellulose-based binder [C6H7O2(OH)3-x(OC2H5)x]n and turpentine are made, and in the first series 10 % by weight of ethylcellulose and 5 ml of turpentine are added to the sample of the powder, and for the second series, the powder is mixed with 30 % by weight of ethylcellulose and 8 ml of turpentine, then, after vigorous stirring the resulting paste is applied to corundum substrates by screen printing, after which the samples are fired at 700 °C for 5 hours in the first stage and then at 1,100 °C for 3 hours.EFFECT: technical result is an increase in the sensitivity of the sensor.1 cl, 3 dwg
ethod of ice-cream production with nanostructured extract of echinacea // 2642100
FIELD: food industry.SUBSTANCE: method for producing ice cream with an extract of echinacea is proposed. In the manufacturing process, a nanostructured additive is introduced into the resulting product, including an extract of echinacea in sodium alginate, at the rate of 1.5 g of nanostructured additive per 1,000 g of finished ice cream.EFFECT: invention allows to produce ice cream with specific organoleptic properties, enriched with biologically active substances of plant raw materials, without foreign smells and flavors.1 cl, 2 ex
ethod of producing nanocapsules of herbs having cardioactive action in pectin // 2642056
FIELD: pharmaceuticals.SUBSTANCE: invention refers to pharmaceutics, it relates to the method for producing nanocapsules of medicinal plants with cardiotonic effect, characterized by, that as a nanocapsule shell, high or low-esterified pectin is used, and as a core, hawthorn tincture, and the hawthorn tincture is added to a suspension of high- or low-esterified apple or citrus pectin in hexane in the presence of 0.01 g of E472c preparation as a surfactant while mixing at 1300 rpm, obtained suspension is filtered and dried at room temperature, weight ratio nucleus/shell is 1:3.EFFECT: invention allows to simplify and accelerate the process of producing nanocapsules and increase the output by mass.1 cl, 4 ex

ethod of producing medicinal plants nanocapsules with cardiotonic effect // 2642054
FIELD: nanotechnologies.SUBSTANCE: invention relates to the field of nanotechnology, in particular to a process for producing nanocapsules, and describes a method of producing medicinal plants nanocapsules with cardiotonic effect, which is characterized by the fact that hawthorn tincture is added to a suspension of xanthan gum in toluene, in the presence of 0.01 g of E472c preparation as a surfactant while mixing at 1300 rpm, the obtained suspension is filtered and dried at room temperature.EFFECT: method ensures the simplification and acceleration of the process of producing nanocapsules, reduction in losses in the production of nanocapsules, and can be used in the pharmaceutical and food industries.1 cl, 1 dwg, 4 ex
ethod for detecting microbial and viral contamination of solutions and biological fluids // 2641960
FIELD: medicine.SUBSTANCE: invention refers to microbiology, namely to a method for detecting a contamination of solutions and biological fluids. Substance of the method consists in detecting the biological objects containing microorganisms or viruses by means of metal nanoparticles formed in situ from respective metal salts introduced into the analysed object, and analysing the dynamics of spectral characteristics of the forming nanoparticles. In the presence of microbial cells for the period of 20-40 minutes, the size of the forming metal nanoparticles reaches more than 15 nm; in the presence of viruses, the size of the forming nanoparticle reaches 6 nm, whereas the absence of any contamination of the analysed objects is shown by the size of the forming nanoparticle nuclei not exceeding 2 nm.EFFECT: using the declared method enables the highly sensitive, reliable, technically simple and fast detection of the microbial contamination of solutions and biological fluids.4 dwg, 3 ex

ethod for obtaining nanocarbon // 2641829
FIELD: nanotechnology.SUBSTANCE: method comprises supplying into the reaction chamber made in the form of a trunk, which is periodically closed at one end and opened at the other end, on the side of the closed end through a system of fast-acting valves and a mixer tap in the flowing mode of clean acetylene or with addition of oxygen, and then easily detonating acetylene-oxygen mixture, initiating detonation at the closed end of the chamber and after passing a detonation wave forming nanocarbon as a result of the detonative decomposition of the acetylene, wherein at the end of the cycle of nanocarbon production blowing the trunk with a gaseous hydrocarbon with a general formula CnH2n+2 or CnH2n, implementing frequency repetition of cycles in an automatic mode, and the obtained nanocarbon is collected in the manifold.EFFECT: obtaining nanocarbon of the required degree of purity by a high-productive method with increased efficiency of raw material use and explosion safety.2 dwg, 1 tbl, 1 ex
ethod for producing nanocrystalline powder of molybdenum oxycarbide // 2641737
FIELD: chemistry.SUBSTANCE: method of producing nanocrystalline powder of molybdenum oxycarbide includes evaporation of oxygen-containing compounds of molybdenum at a high temperature in an atmosphere containing an inert gas, followed by the condensation upon cooling. The powder of molybdenum trioxide is used as the oxygen-containing molybdenum compound, the evaporation is carried out in the presence of urea taken in the ratio of molybdenum trioxide: urea = 1:1, in terms of the plasma precondensation in the low-temperature nitrogen plasma at a temperature of 4000÷6000°C with the power of the plasma torch 2.4÷3.6 kWh at a flow rate of plasma 50÷55 m/s and a feed rate of powder of 150-200 g/h, and cooling is carried out in a stream of nitrogen, followed by the vortex cycloning and capture on the fabric filter.EFFECT: invention makes it possible to obtain molybdenum oxycarbide with a structure of the NaCl type without foreign impurities with a particle size of not more than 30 nm in an environmentally safe manner.2 ex, 2 dwg
ethod of obtaining suspension on polymer basis with high-dispersed metal particles for manufacture of polymeric matrices filled with related particles // 2641591
FIELD: chemistry.SUBSTANCE: method comprises obtaining finely dispersed particles by spraying metal placed on a tungsten evaporator, then introducing the said particles into a polymer liquid by spraying with a gas stream and passing the said particles through a diaphragm above the liquid surface in a chamber in a gas medium with a controlled pressure, and mixing the introduced particles in a polymeric liquid, adjusting its pressure and temperature to obtain a slurry.EFFECT: obtaining a suspension with particles of controlled size from nanometre to atomic.1 dwg, 5 ex
ethod for producing nanocapsules of dry extract of topinambur // 2641190
FIELD: nanotechnology.SUBSTANCE: method for obtaining nanocapsules of a dry extract of Jerusalem artichoke in a shell of pectin is described. As a nanocapsule, a low-esterified and highly esterified apple and citrus pectin is used, as a core - a dry extract of Jerusalem artichoke. Nanocapsules are prepared by mixing a mixture of pectin in toluene with 0.01 g of E472c as a surfactant, then adding a dry extract of Jerusalem artichoke into the mixture, precipitating with diethyl ether, followed by filtering out the resulting suspension and drying the nanocapsules. Mass ratio in nanocapsules core: shell is 1:3 or 5:1. The process of obtaining nanocapsules is carried out at 25°C for 15 minutes.EFFECT: simplification and acceleration of the nanocapsules production process and increase in yield by weight.4 dwg, 9 ex

ethod of betulin nanocapsules production // 2641188
FIELD: nanotechnology.SUBSTANCE: method for preparing betulin nanocapsules in a shell of xanthan gum is described. In the process, the betulin powder is added to a suspension of xanthan gum in isopropanol in the presence of 0.01 g E472c as a surfactant with stirring at 1300 rpm. Then butyl chloride is added. The resulting suspension is filtered and dried at the room temperature. The core shell ratio is 1:1 or 1:3.EFFECT: simplification and acceleration of the nanocapsules production process and increase in yield by weight.1 dwg, 3 ex
ulti-layer antifouling coating // 2641130
FIELD: chemistry.SUBSTANCE: coating is described, comprising a primer layer, an intermediate layer based on an epoxy resin and an amine type hardener, and an external self-polishing biocidal layer, in which an epoxy resin modified with a coal tar containing (wt %) is used as a base in the primer and intermediate layers: phenols 8-18, paraffins and olefins 4-12, neutral oxygen compounds 20-30, carboxylic acids 1-2, pyridine bases 1-3, aromatic hydrocarbons 22-34, and a water-soluble solvent, solvating power is not less than that of water, red iron oxide is further introduced into the intermediate layer and the outer self-polishing layer is based on copper acrylate with the addition of nano-dispersed low molecular weight polytetrafluoroethylene.EFFECT: increased effectiveness of protection against fouling of concrete and reinforced concrete surfaces, operated in fresh and sea water.4 tbl
ethod for forming composite for obtaining electrode material of devices emerging electric energy // 2641118
FIELD: chemistry.SUBSTANCE: in the flow reactor the treatment temperature is set in the range (500-900)°C, including the indicated values, ensuring the decomposition of the carbon precursor and the deposition of carbon into template uniformly distributed in the precursor preliminarily prepared by passing the inert gas flow. Then the flow of a gaseous mixture is fed from the gas-reducing agent and the carbon precursor, precipitating carbon on template and forming a graphene layer, the thickness of which is equal to 1-2 monolayers or more, is selected based on the conditions of participation of the total volume of graphene in the formation of the electrical double layer in the interaction with the electrolyte. A powder of nanoscale metal oxide particles of the second group with a transverse size of 100 nm or less is used as an inorganic template. Ready-made template can be used or produced from a precursor when preheating and when passing an inert gas stream before setting the above temperature in the reactor. Hydrocarbon of a number of alkanes, or alkenes, or alkadienes is used as a carbon precursor. Carbon deposition and graphene formation are carried out for 2-60 minutes, including the indicated values, after which the supply of the gaseous mixture is stopped and the reactor is cooled to room temperature while passing the inert gas. Argon or nitrogen is used as an inert gas at all stages. The choice of graphene thickness is combined with the choice of the specific surface of template in the range (500-1000) m2/g, including the indicated values.EFFECT: increasing the amount of stored energy per unit of weight, discharging rate, charging, prolongation of stability during the charging cycles, discharging.22 cl, 1 dwg, 5 ex
ethod of manufacturing multi-electrode gas-analytical chip based on titanium dioxide nanotube membranes // 2641017
FIELD: chemistry.SUBSTANCE: method of manufacturing multi-electrode gas-analytical chip based on titanium dioxide nanotube membranes include formation of ordered array of nanotubes TiO2 from titanium by electrochemical anodization in fluoride electrolyte with the consequent dissolution of the titanium substrate in methyl alcohol with the addition of bromine, and washing the resulting membrane in alcohols and drawing it from the solution to the chip substrate surface on which the strip electrodes are formed (or were preformed earlier) to enable electrical measurements of resistances of the membrane sites. In the operation the chip is exposed to the gas environment, the resistance change in segments of titanium dioxide nanotube membrane is recorded, placed between each pair of the strip electrodes, and the vector signal is treated from the entire set of segments by methods of pattern recognition to determine the gas composition.EFFECT: producing a highly sensitive and gas-selective multi-electrode gas analyzer chip in a simple method with a low cost.5 cl, 9 dwg
ethod for obtaining of coloured textile materials processed by silver cations hydrosole, with complex of light-stabilizing, antimicrobial and antitoxic properties // 2640925
FIELD: medicine.SUBSTANCE: method for obtaining of coloured woven and nonwoven textile materials containing synthetic fibers or mixtures thereof comprising sequential production of an aqueous formulation of a modifying preparation comprising silver cations, an emulsifier, a silver cation reducing agent from the group of organic food acids, and a stabiliser from the high molecular weight hydroxyl-containing polymer group; and its application to the coloured surface of textile materials by impregnation.EFFECT: obtaining of coloured woven and non-woven textile materials containing synthetic fibers or mixtures thereof with a complex of light stabilizing, antimicrobial and antitoxic properties by improving the quality of preparation of the aqueous formulation of the modifying preparation with predetermined parameters of its physicochemical properties and controlling the concentration of the stabilized silver cations hydrosole composition when applied to the coloured surface of textile materials.2 cl, 9 tbl, 2 ex

ethod for obtaining modified photocatalyst based on titanium dioxide // 2640811
FIELD: chemistry.SUBSTANCE: method of obtaining a modified photocatalyst based on titanium dioxide for the photocatalytic air purification, consisting in the fact that the nanocrystalline powder of titanium dioxide in the anatase modification with a specific surface area above 300 m2/g is subjected to treatment with an aqueous solution of the fluorine-containing agent in a molar ratio of fluorinated agent and titanium dioxide of 0.09-0.11:1 with the subsequent processing of the slurry with a mineral acid to achieve pH=4-4.5.EFFECT: obtaining a highly active photocatalyst, allowing to reduce the time required in the purification of air from volatile organic compounds and intermediates of incomplete oxidation in the course of photocatalysis, 2 or more times by increasing the speed of photocatalytic oxidation.4 cl, 1 tbl, 10 ex

Nanotubular materials crystallising in system of k2o-tio2-x-h2o (x=nio, mgo, al2o3, cr2o3, co2o3, fe2o3) and method of their synthesis // 2640766
FIELD: chemistry.SUBSTANCE: nanotubular materials crystallising in the system of K2O-TiO2-X-H2O (X=NiO, MgO, Al2O3, Cr2O3, CO2O3, Fe2O3) are characterized by the fact that in their composition up to 10% of ions Ti4+ is replaced by doping two- or trivalent metal. The method of synthesis of nanotubular materials is characterized by the fact that the synthesis of the samples is carried out by hydrothermal treatment of a pre-prepared mixture of hydroxide in KOH solution, to produce the initial mixtures of hydroxides, a solution of titanyl chloride synthesised by reaction of TiCl4 with chilled distilled water, is mixed with aqueous solutions of salts of finished elements in a predetermined ratio, and then the precipitation of hydroxides is produced by adding NH4OH to the aqueous solution mixture at pH=9-9.5 followed by washing with distilled water, drying at 70-90°C and mechanical crushing, then the crushed precipitate is mixed with 10 M KOH solution and subjected to a hydrothermal treatment at 170-180°C for, at least, 24 hours, after which the resulting product is washed with distilled water.EFFECT: invention makes it possible to synthesise potassium-titanate nanotubes with an average outer diameter of 5 to 12 nm.2 cl, 5 dwg, 2 ex
ethod for producing porous graphene // 2640765
FIELD: nanotechnology.SUBSTANCE: carbon source obtained from biomass, selected from the cellulose and/or lignin, is dried over a catalyst selected from a group consisting of manganese chlorides, iron compounds, cobalt compounds and nickel compounds, to obtain the first intermediate product. The weight ratio of the catalyst to the carbon source is (0.01-2):1. The obtained first intermediate product is heated in a protective atmosphere from (20-40)°C to (300-400)°C at a speed of (5-20)°C/min and held at this temperature to obtain the second intermediate product. The resulting second intermediate product is heated in a protective atmosphere to (800-900)°C at a speed of (30-40)°C / min and held at this temperature to obtain the third intermediate product. The resulting third intermediate product is heated in a protective atmosphere to (1100-1300)°C at a speed of (50-60)°C/minute and held at this temperature to obtain the fourth intermediate product. The resulting fourth intermediate product is cooled in a protective atmosphere to (900-1000)°C at a speed of (30-50)°C/min. Throughout all stages one or more gases selected from nitrogen and inert gases are used as a protective atmosphere. Agricultural and forestry wastes, for example, corn stalks or cobs, sorghum stalks, beet pulp, oilcake, plant wastes, wastes of corn cobs, wood chips, stalks of cotton and cane are used as a biomass resource at the first stage.EFFECT: method for producing porous graphene from cheap and affordable raw materials is simple, highly productive and provides improved electrical conductivity of the target product.23 cl, 5 dwg, 10 ex
ethod for forming nanocrystalline surface layer on details from aluminium alloys (versions) // 2640687
FIELD: nanotechnology.SUBSTANCE: amorphous surface layer is formed by bombarding it with ions of one of the following elements: Y, Yb, C, N. After that, the amorphized surface layer is crystallized by exposing the surface to ultrasonic vibrations with energy sufficient to provide the crystallization process, and the crystallization process is performed until necessary dimensions of nanocrystals are obtained. After that, the ultrasonic exposure is stopped and the material of the product is cooled at a rate ensuring the fixation of processes of the material transition from amorphous state to nanocrystalline one.EFFECT: improved operational properties of the details.6 cl, 3 ex

ethod of betulin nanocapsules production // 2640499
FIELD: nanotechnology.SUBSTANCE: method for producing betulin nanocapsules is characterized in that an apple or citrus pectin is used as the nanocapsule shell, and betulin is used as the nucleus. According to the method betulin powder is added to a suspension of high- or low-etherified pectin in methanol in the presence of 0.01 g of E472c drug as a surfactant at a stirring speed of 1000 rpm, then hexane is poured in. The resulting suspension pf nanocapsules is filtered and dried at room temperature. The core: shell ratio is 1:1 or 1:3.EFFECT: according to the invention the method provides simplification and acceleration of the nanocapsules production process and increase in the yield by weight.2 dwg, 6 ex

ethod of production of nanocapsules of dorogov antiseptic excitor (dse) fraction 2 // 2640489
FIELD: nanotechnology.SUBSTANCE: method for production of Dorogov antiseptic excitor (DAE) nanocapsules fraction 2 in a shell of gellan gum is described. In the method DAE fraction 2 is added to a suspension of gellan gum in ethanol in the presence of 0.01 g of E472c drug as a surfactant at a stirring speed of 1300 rpm. Then hexane is added, the resulting precipitate is filtered and dried at room temperature. The core: shell ratio is 1:1, or 1:3, or 3:1.EFFECT: simplification and acceleration of the nanocapsules production process and increase in yield by weight.3 dwg, 4 ex

ethod for production of nanocapules of auxins // 2640488
FIELD: nanotechnology.SUBSTANCE: auxine is added to an agar agar suspension in isopropanol in the presence of a surface-active agent at a stirring speed of 1300 rpm. Then petroleum ether is poured in. The resulting suspension of nanocapsules is filtered and dried at room temperature. The core/shell ratio in nanocapsules is 1:1, or 5:1, or 1:3.EFFECT: method ensures simplification and acceleration of the nanocapsules production process, reduction of losses during the nanocapsules production and can be used in the pharmaceutical and food industries.5 dwg, 10 ex
ethod for production of antimicrobial silver-containing cellulose material // 2640277
FIELD: textile, paper.SUBSTANCE: method for the production of an antimicrobial silver-containing cellulosic material is claimed, comprising the treatment of a cellulose-containing material with a previously prepared aqueous dispersion of silver particles, followed by dehydration and drying. Wherein the dispersion of silver nanoparticles with the silver concentration from 0.006 wt % to 0.06 wt % contains preparations not reducing the aggregative stability of the silver particles, namely, gelatine, a cation-active polyelectrolyte, e.g. chlorhexidine, miramistin, a preparation based on polyhexamethylenguanidine hydrochloride or quaternary ammonium compounds, and a reductant, e.g. sodium tetrahydroborate or alkaline solutions of starch. In addition, the aqueous dispersion of the silver particles may contain a film-forming compound, for example PVA, PVS.EFFECT: increasing the efficiency of producing an antimicrobial cellulosic silver-containing material and ensuring its high biological activity during long operation after humid-heat treatments.6 cl, 2 tbl, 26 ex

ethod for producing nanocapsules of dry extract of topinambur // 2640130
FIELD: nanotechnology.SUBSTANCE: dry extract of topinambur is added to a suspension containing sodium alginate in butanole and drug E472c as a surface-active substance, then petroleum-ether is added, the obtained suspension of nanocapsules is filtered, washed with petroleum-ether and dried. The ratio core: shell is 1:1, 1:3, 1:5 or 5:1.EFFECT: method ensures simplification and acceleration of the nanocapsules production process, reduction of losses during the nanocapsules production and can be used in the pharmaceutical and food industries.2 dwg, 5 ex

ethod for producing aecol nanocapsules // 2640129
FIELD: nanotechnology.SUBSTANCE: method for producing AECol nanocapsules in a shell of sodium alginate is characterized in that AECol is added to a suspension of sodium alginate in benzene in the presence of 0.01 g of E472c as a surface-active substance, followed by stirring at 1300 rpm. Then 10 ml of diethyl ether is added, after which the resulting suspension is filtered and dried at room temperature, wherein the core/shell weight ratio is 1:1, or 1:3, or 3:1, or 1:5.EFFECT: simplification and acceleration of the nanocapsules production process, reduction of losses during the nanocapsules production and can be used to create biologically active additives and for the food processing industry.1 dwg, 5 ex

ethod for producing aecol nanocapsules // 2640128
FIELD: nanotechnology.SUBSTANCE: method for producing AECol nanocapsules in a shell of sodium carboxymethylcellulose is characterized in that AECol is added to a suspension of sodium carboxymethylcellulose in benzene in the presence of 0.01 g of E472c as a surface-active substance, followed by stirring at 1300 rpm, after which 10 ml of petroleum-ether is added, after which the obtained suspension is filtered and dried at room temperature. The ratio core/shell is 1:1, or 1:3, or 3:1, or 1:5.EFFECT: simplification and acceleration of the nanocapsules production process, reduction of losses during the nanocapsules production.1 dwg, 5 ex

ethod for producing nanocapsules of dry extract of topinambur // 2640127
FIELD: nanotechnology.SUBSTANCE: dry extract of topinambur is added to a suspension containing carrageenan in butanole and drug E472c as a surface-active substance, then toluene is added, the obtained suspension of nanocapsules is filtered, washed with toluene and dried. The ratio core: shell is 1:1, 1:3, 1:5 or 5:1.EFFECT: simplification and acceleration of the nanocapsules production process, reduction of losses during the nanocapsules production.3 dwg, 5 ex
ethod of producing carbide powder // 2639797
FIELD: chemistry.SUBSTANCE: carbide powder is produced under isothermal conditions in an inert gas atmosphere in an alkali metal halide ion melt, into which a carbide-forming element compound, salt or complex salt thereof, and carbon powder are introduced. Pure powders of metal carbides are produced from the series including Ti, W, V, Ta, Zr, Cr, Mo, Al, Nd, or boron carbide or silicon, ranging in size from about 10 to a few hundred nm of the stoichiometric composition with a low content of trace gases.EFFECT: increased degree of purification.1 cl

Depth filter from nonwoven self-supported material // 2639702
FIELD: ventilation.SUBSTANCE: depth filter of a non-woven self-supported material consists of polymeric supporting fibers with microsize diameters and embedded in the supporting fibers of polymeric filter fibers with nanoscale diameters. The supporting fibers form a coherent three-dimensional filter cage. The filter fibers in the filter capacity are distributed in such a way that their density in the filter capacity is different and increases from the surface of the filter facing the incoming flow of the medium to be cleaned to the surface of the filter through which the medium to be purified exits.EFFECT: consistent high quality of air or gas purification for a long time.5 cl, 3 dwg

Composite materials based on volume carbon nanotubes and metal and method of their manufacture // 2639181
FIELD: technological processes.SUBSTANCE: composite material based on volume carbon nanotubes and metal. Composite material based on volume carbon nanotubes contains a layer of volume carbon nanotubes, having a lot of carbon nanotubes, and a metal film, applied over the material layer of volume carbon nanotubes to penetrate to free spaces between separate carbon nanotubes.EFFECT: reduction of electrical resistance between the plurality of carbon nanotubes.15 cl, 3 dwg

Dry brier extract nanocapsules production method // 2639092
FIELD: nanotechnology.SUBSTANCE: dry brier extract is dispersed into the gellan gum suspension in isopropanol in the presence of E472c as the surfactant with stirring at 1,300 rpm. Then the ethyl acetate is added, after which the formed precipitate is filtered and dried off at room temperature. The ratio of dry brier extract to gellan gum is 1:1, 1:3 or 5:1.EFFECT: simplification and acceleration of the nanocapsules production process, reduction of losses during the nanocapsules production.1 dwg, 4 ex

Production method of medicinal plants nanocapsules with cardiotonic action // 2639091
FIELD: nanotechnology.SUBSTANCE: hawthorn tincture is added into the gellan gum suspension in hexane with the presence of the drug E472c as the surfactant with stirring at 1,000 rpm and the resulted suspension of nanocapsuls is filtered and dried off at room temperature. The ratio core/shell is 1:1 or 1:3.EFFECT: simplification and acceleration of the nanocapsules production process, reduction of losses during the nanocapsules production and can be used in the pharmaceutical and food industries.1 dwg, 3 ex
Catalytic system for conversion of ammonia // 2638927
FIELD: chemistry.SUBSTANCE: system including a catalyst package comprising, in the first stage, a layer of catalyst meshes of platinoid alloys and a collecting bag in the second stage is described. As a collecting bag, the catalytic system comprises a layer of self-regenerating SCS catalyst screens having a catalytic and collecting action made of, at least, one heat-resistant steel containing the components at the following ratio, wt%: Fe 70, Cr 25, Al 5; Fe 71, Cr 23, Al 5, Ti 1; Fe 69, Cr 25, Al 5, Ni 1, on the surface of which a nanocrystalline layer of platinum is applied in an amount of 0.20-0.40 wt % of the components of the steel.EFFECT: reduction of irretrievable losses of platinoids and reduction of platinoid insertion into each particular ammonia conversion unit.5 ex

ethod of producing composite materials as polymer matrices filled with nanoparticles of metal oxides with modified surface // 2638658
FIELD: chemistry.SUBSTANCE: for the production of composite materials, the surface of the original BaTiO3 nanoparticles is preliminarily activated by the application of hydroxyl groups by boiling in a hydrogen peroxide solution and modified with cationic surfactant molecules by treatment with a solution of a cationic surfactant at a concentration below the critical micelle concentration. The resulting precipitate is filtered, washed from the cationic surfactant unbound to the surface of the metal oxide nanoparticles, and dried. The nanoparticles BaTiO3 with a modified surface are introduced into the polymer solution, achieving the desired volume ratio of the filler and the polymer matrix, and subjected to ultrasonic dispersion.EFFECT: simplification of the method of producing composite materials in the form of polymer matrices filled with nanoparticles of oxide ferroelectrics with a modified surface, allowing to reduce the degree of aggregation of nanoparticles in the polymer.3 dwg

ethod of functionalizing carbon nanotubes with oxygen-containing groups // 2638214
FIELD: chemistry.SUBSTANCE: carbon nanotubes are treated with electrolyte in a flow cell containing a cathode 10 installed in its interior, an anode 6, and a porous diaphragm 8 dividing the inner space into the anode and cathode parts. The electrolyte includes an aqueous acid solution selected from the range: hydrochloric, and/or nitrogen, and/or sulfuric. Carbon nanotubes 7 are placed in the anode part, when they are in direct contact with the anode. A potential difference of 1.5-6 V is established between the anode 6 and the cathode 10, sufficient for the electrolysis to proceed. The electrolyte is passed at a rate of 1-5 ml/min for 1 g nanotubes for 3-10 hours. The carbon nanotubes are then removed from the cell, washed with water and dried.EFFECT: invention allows to functionalize carbon nanotubes with oxygen-containing functional groups in a simple way.6 cl, 2 dwg, 3 ex
Filter material and method for its production // 2637952
FIELD: ventilation.SUBSTANCE: in order to produce the filter material, polyacrylonitrile nanofibres are electroformed in electric field of high voltage and simultaneous laying of the formed nanofibres onto nonwoven substrate in 1-10 layers, after which the obtained material is folded two or three times. The forming is carried out from polyacrylonitrile solution in a solvent at a concentration of 12-13% wt %, solution viscosity is 0.9-1.4 Pa⋅, temperature 30-35°C, relative humidity is 7-17%, electric field voltage is 65-70 kV, the distance between the forming and precipitation electrodes is 170-190 mm. The nanofibres have a diameter of 180-250 nm, the mass per unit area of the nanofibrous layer is 1-7 g/m2, the resistance to air flow at a linear velocity of 1 cm/s is 47-150 Pa.EFFECT: improved filtration efficiency, simplified production of the filter material.4 cl, 2 tbl, 4 ex
ethod of producing fine-grained barium titanate // 2637907
FIELD: chemistry.SUBSTANCE: method ofproducing fine-grained barium titanate comprises treating a mixture of titanium dioxide and barium oxide powders with water vapour in a reactor in a static mode under supercritical conditions: at a temperature of 380 to 420°C and a pressure of 22.5 to 30.5 MPa for 16-48 hours, after which the reactor is cooled to room temperature, the resulting barium titanate is first dried at a temperature of 70±20°C for 10-12 hours, washed with a solution of acetic acid with a concentration of 5-10 wt %, then with distilled water and again dried at a temperature of 70±20°C to constant weight.EFFECT: invention makes it possible to produce single-phase barium titanate with a crystal size of 40-300 nm with a high content of the basic substance.3 cl, 8 dwg, 2 tbl, 8 ex

ethod for obtaining heteronanostructures ag2s/ag // 2637710
FIELD: chemistry.SUBSTANCE: invention can be used in optoelectronics and nanoelectronics as resistance switches and non-volatile memory devices. Method for obtaining heteronanostructures of Ag2S/Ag involves the preparation of a mixture of aqueous solutions of silver nitrate, sodium sulfide, and sodium citrate, taken in a ratio of 1: 0.1÷1.2 : 0.05÷1.8, aging for 5-100 minutes at a temperature of 20-35°C and radiation irradiation with a wavelength of 460-650 nm and a light flux of 400-6000 lm for 5-100 min. The invention allows to receive a biphasic heteronanostructure of Ag2S/Ag of the "semiconductor/metal" type with predefined ranges in size from 10 to 80 nm, where semiconductor and metal components are coherently linked.EFFECT: improved method.1 dwg, 2 ex
ethod for producing modified carbon nanotubes // 2637687
FIELD: nanotechnology.SUBSTANCE: solution containing water-soluble epoxy resin DEG-1, TEG-1 or EG-10 and water, with addition of fluorinated carbon nanotubes, whose concentration is 1-2 mcg/g, is subjected to ultrasonic treatment. The treated solution is filtered. After washing the filtered modified carbon nanotubes with water until the filtrate discolouration, the water solution is ultrasonically processed and filtered. After washing with acetone, the modified carbon nanotubes are dried.EFFECT: reduced energy costs, reduced time of obtaining modified carbon nanotubes with their high yield.3 cl, 1 tbl

ethod for obtaining nanocapules of chia seeds (salvia hispanica) in xanthan gum // 2637629
FIELD: nanotechnology.SUBSTANCE: method for obtaining nanocapsules of chia seeds in a coat of xanthan gum is as follows. Chia seed powder is added to a suspension of xanthan gum in hexane in the presence of 0.01 g of E472c as a surface-active substance. Then, the mixture is stirred at 1000 rpm, methylene chloride is added, after which the resulting suspension is filtered off and dried at room temperature. The ratio core/ shell is 1:1, or 1:3, or 1:2, or 2:1, respectively.EFFECT: nanocapsules manufacture process simplification and acceleration and weight yield increase.4 dwg, 5 ex

etal-polymer nanocomposite magnetic material based on poly-3-amino-7-methylamino-2-methylphenazine and nanoparticles fe3o4 and method of its production // 2637333
FIELD: chemistry.SUBSTANCE: metal-polymer nanocomposite magnetic material includes a polymer matrix and nanoparticles Fe3O4 dispersed therein. As a polymer matrix, a matrix of poly-3-amino-7-methylamino-2-methylphenazine PAMMP is used with the content of the nanoparticles Fe3O4 in the material 1-70 wt % of PAMMP. To produce a metal-polymeric nanocomposite magnetic material by oxidative polymerization of a monomer in situ on the surface of the nanoparticles Fe3O4 in the presence of an aqueous oxidant solution, 3-amino-7-dimethylamino-2-methylphenazine hydrochloride-neutral red is used as a monomer, and ammonium persulfate is used as an oxidant. The molar ratio of the oxidant to the monomer in carrying out the oxidative polymerization is 2-5. Prior to oxidative polymerization, the monomer is dissolved in an organic solvent, which is acetonitrile, dimethylformamide or dimethylsulfoxide, to a concentration of 0.01-0.05 mol/l. Nanoparticles Fe3O4 are added to the solution in the amount of 1-70 wt % of PAMMP. Oxidative polymerization is carried out at 0-60°C for 1-6 hours.EFFECT: invention allows to increase the saturation magnetization of a hybrid metal-polymer nanocomposite magnetic material with super-magnetic properties, high thermal stability, to simplify its production, and to reduce energy costs.2 cl, 10 dwg, 1 tbl, 24 ex

Electrode device // 2637195
FIELD: electricity.SUBSTANCE: electrode device contains a current-diverting element, a dielectric porous body, the pores of which are filled with metal nanoparticles and impregnated with gel electrolyte, and the metal nanoparticles are covered with salt of this metal. The dielectric porous body is made in the form of a vessel with the pointed lower bottom part, the pores of the upper part of the bode are filled with metal nanoparticles covered with salt of this metal and impregnated with the gel electrolyte, the outer surface of the upper part of the body is covered with the first layer of silver and then a layer of insulating material with the exception of a small area in the lower bottom part that is not filled with nanoparticles and not impregnated with a gel electrolyte. The current-diverting element is made in the form of a silver-coated metal body cover with a metal output, having an electrical contact with a layer of silver on the outer surface of the upper part of the body and fitted with a stopper hole to fill the body in the form of the vessel with a liquid equal-transmitting electrolyte.EFFECT: expansion of functional possibilities and increase of accuracy of measurements at electrochemical researches.1 dwg

ethods of improving pcd sintering (polycrystalline diamond) using graphene // 2636508
FIELD: chemistry.SUBSTANCE: nanoscale mono- or multilayer graphene-containing material is sintered for about 5 minutes in the absence of a transition metal catalyst at a pressure and temperature of, at least, 45 kbar and 700°C, respectively. Alternatively, the said material is mixed with diamond seeding in an amount of not less than 0.01 wt % of the mixture before sintering. Graphene has a ratio of sizes from 500 to 2000. The resulting compacts of polycrystalline diamond and the cutting element comprise polycrystalline superabrasive particles, for example, diamond.EFFECT: invention avoids the harmful effect of the catalyst on the mechanical and abrasive properties of compacts and cutting tools.24 cl, 3 tbl, 7 dwg
Electroinsulated polymer compound // 2636383
FIELD: electricity.SUBSTANCE: compound comprises in pts. wt.: suspended polyvinyl chloride 100, plasticiser ester 40-80, calcium carbonate 40-160, magnesium hydrate or aluminium hydrate 20-80, lead heat stabiliser 3-6, antimony trioxide 3-8, zinc oxide 2-8, zinc borate 2-8, diphenylol propane 0.2-0.4, metallic silver in the form of the nanoparticles 0.001-0.03.EFFECT: invention makes it possible to develop the electroinsulated polymer compound, which has the lowered level of the smoke emission within the combustion and smoulder conditions.7 ex, 2 tbl
 
2551375.
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