SU1397975A1 - Method of producing magnetic emulsion - Google Patents

Abstract

The invention relates to the production of magnetic emulsions and can be used in the manufacture of emulsions for wastewater treatment, gas emissions and directional transport of drugs. In order to increase the stability of the magnetic emulsion and increase its stability upon dilution, the powder of the magnetic filler is treated with g-radiation in a mixture of linolenic, linoleic and arachidonic acid vapor in a ratio of 1.0: 1.0: 0.1 before emulsifying in the fatty phase. The dose-radiation rates are set at 60-100 rad / s, and the duration of irradiation is within 8-10 hours. Emulsions filled with magnetite, barium ferrite and iron are obtained, which remain stable during 2 May. and allowing them 10-fold dilution. (L

Description

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 The invention relates to the field of magnetic materials, in particular to methods for producing magnetic suspensions that can be used for wastewater treatment, gas emissions and directional transport of drugs.

The aim of the invention is to increase the stability of the magnetic emulsion and increase its stability upon dilution.

The invention is based on the treatment of the original magnetic powder — by irradiating a mixture of essential fatty acids: linolenic, linoleic, and arachidonic vapor in the atmosphere at a ratio of 1.0: 1.0: 0.1. Treatment with γ-radiation at a dose rate of 60–100 rad / s for 8–10 h with subsequent drying and washing of the powder with ether allows increasing the aggregate stability of the suspensions during storage and its stability upon dilution.

In order to satisfy the requirements for the boundary sizes of magnetic parts with a shell and their size distribution, their separation can be used, for example, by an air flow.

When emulsifying, 5–10-fold (by volume) amount of the biologically inert fatty phase (vegetable oil) is added to the magnetic powder.

J10, silicone oil, fatty tissue. Intravenous nutritional components, etc.), the mixture is homogenized and 5-30% of the volume of the obtained biogenic biostimulant surfactant ogenate Q (lecithin, hilmicron, total fraction of lipoproteins, vinyl pyrolidone and t ) and 5–20% of the added surfactant active additives (reaction components, fragrances, medicinal prepadin emulsions (suspensions) for windings, etc.), the mixture is homogenized; a de Krasny athlete showed high emulsion obtained. for cleaning model vulcanization gases and gas O precipitates formed upon degradation of PVC compositions under laboratory conditions. The cleaning was carried out by spraying the magnetic emulsion inside the cleaned air stream, followed by passing the resulting aerosol through the magnetic field. Experiments showed (average of 10 experiments) that the degree of purification of vulcanization gases reaches 90%, PVC degradation products - 75-80%.

Trial experiments on cleaning the exhaust with the described magician

howl is 1.0: 1.0: 0.1. The ratio is experimentally optimized to within tO, 1%. Other ratios give worse results (quality of the graft layer, a large mass of homopolymers and copolymers). The irradiation dose rate is 80 rad / s, the processing time is 8 hours. After irradiation, the powder is washed off with petroleum ether and separated in a stream of air of 0.5 m / s at a departure angle above plane 43. Selected 70% of the powder from the periphery of the dispersion spot. A 10-fold volume of vegetable mustard oil was added to the selected fraction of magnetite and homogenized with :: Ece, then 10% of the volume of the obtained emulsifier homogenate (edible sunflower phosphatides) and a 2% solution of fragrant Lavender were added to it. The mixture is homogenized, mixed with a ten-fold amount of distilled water and processed on a vibrating mixer and an ultrasonic disintegrator.

The nitric emulsion (suspension) at the Krasny Bogatyr factory showed high emulsion obtained that was used to purify model vulcanization gases and gaseous emissions formed during the destruction of PVC compositions under laboratory conditions. The cleaning was carried out by spraying the magnetic emulsion inside the cleaned air stream, followed by passing the resulting aerosol through the magnetic field. Experiments have shown (average of 10 experiments) that the degree of purification of vulcanization gases reaches 90%, PVC degradation products - 75-80%.

Trial experiments on cleaning the exhaust with the described magician

G -15 min, poured with an excess of water or saline solution 5-10 times by volume of the mixture, mixed on a vibration mixer for 5-10 minutes; emulsify by exposing the mixture to an ultrasonic disintegrator.

Example 1. Dry magnetite powder with a maximum particle size of 0.001 mm is treated with f-radiation in fatty acid vapors. The ratio of essential fatty acids: linolenic, linoleic and arachidonic

five

What is the effectiveness of a magnetic emulsion (75% purification).

When stored for 2 months, no aggregation and loss of the magnetic component was detected. After a two-month storage of the emulsion, its efficiency remains at least 99% of the original.

An emulsion prepared in a known manner retains its operability as a carrier of drugs for 3-5 days, after which its aggregation and loss of the magnetic phase are observed.

Example 2. Barium ferrite powder with a maximum particle size of 0.05 mm is treated with y-radiation in vapors of fatty acids (dose rate 100 rad / s, processing time 9 h), washed with petroleum ether, dried with air blowing and without separation mixed with dec tikratny volume of silicone oil. The mixture is homogenized, after which 5% of vinylpyrrolidone and 0.03% (of the resulting volume of the mixture) of acetylbenzoyl peroxide are added to it. After that, the mixture is homogenized, merged with 5-fold E 1 by volume by the amount of drinking node - and processed on a vibrating mixer and an ultrasonic disintegrator. The resulting magnetic emulsion (suspension) was stored for 2 months of aggregation and no precipitation of magnetic particles was detected. By the end of the storage period, a fatty film appeared on the surface of the suspension, which disappeared when processed on a vibratory mixer. This slurry was intended for wastewater treatment.

waters from organic chemicals - eagr z-sopi propionylbenzoyl, thoroughly foamed and tested on model wastewater systems containing methyl ethyl ketone, captax, thiuram and toluene. The degree of purification using an emulsion was 75-95%.

Example 3. Magnetic powder of chemically pure iron with a maximum particle size of 0.1 mm was treated with G-radiation in fatty acid vapors (dose rate 60 rad / s, processing time 8 hours), removed from petroleum ether and dried in a stream of argon at 20 ° C . The powder was separated in the air flow (V 0.8 m / s, departure angle 45), 5% of the treated powder was taken from the periphery of the spot. Evaluation measurements showed that the maximum particle size in the selected fraction was mm. An amount of the total fatty component of the intravenous nutrition Lipofundin, obtained by evaporation of water at a pressure of mm Hg, was added five times over the object to this fraction of the magnetic powder. and T 20 s, and the mixture was homogenized, after which 15% of the total fraction of lipoproteins isolated from

rabbit blood and 0.3% of a stable nitroxyl radical (the chain length of the alkyl substituent varied) modeling the drug.

After that, the mixture was again homogenized, merged with a tenfold amount of saline solution and processed sequentially on a vibrazoin mixer and an ultrasonic disintegrator.

Received Magnetic Emulsion

5 (suspension) preserved stability for 2 months (aggregation and fallout of the thermal component was not observed).

Example 4. Dry magnetite powder with an average particle size of 0.001 mm was treated with γ-radiation in vapors of fatty acids at a dose rate of 100 rad / s for 10 hours, washed with petroleum ether, dried in

5 current of argon at a temperature of 20 ° C,

without separation mixed with 6-fold volume of silicone oil. After mixing, 5% vinylpyrrolidone and 3% peroxide were added to the mixture by volume 5

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mixed, poured into a 5-volume volume of distilled water and processed on a vibrating mixer. The resulting magnetic fluid remained stable (no phase separation and sediment) for 2 months. The liquid was used for wastewater treatment, phenol and toluene contents; The average purification efficiency for 10 samples of the effluent, controlled by NMR, was 90 ± 5%. Experiments showed that the degree of filling the fatty material with magnetic material reaches 30 wt.%, which is 2-2.5 times higher than the fullness of the magnetic emulsion obtained by a known method.

Comparison of the emulsions obtained by the proposed and local methods also showed that, at tenfold dilution, the proposed emulsions retain their properties and can be separated from the liquid by a magnetic field. The emulsions obtained by g in a known manner, with this dilution, decompose with the precipitation of the magnetic and nitric phases.

The proposed method allows to increase the firmness of the magnetic sus5

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pensions from 3-5 days to 2 months and ensures their stability when diluted.

The use of the proposed method will allow to expand the field of use of magnetic suspensions, in particular, to use them for the directional transport of drugs.

Claims (1)

Invention Formula The method of obtaining a magnetic emulsion, comprising applying to the particles 5 of a magnetic powder coating of bio emulsion of the mixture of treated magnetic particles and stabilization, characterized in that, in order to increase the stability of the magnetic emulsion and increase its stability upon dilution, the original magnetic powder is treated in the atmosphere of a mixture of vapors of linolenic, linoleic and arachidonic acids in a ratio of 1.0: 1.0: 0.1, respectively, when exposed to radiation with a dose rate of 60-100 rad / s and an irradiation time of 8-10 hours, followed by washing with petroleum ether and drying.