Method of obtaining antibiotic coating on filtering material

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention relates to the field of obtaining and production of filtering materials for purification of air of industrial premises based on polymer fibres, possessing antibiotic properties. Synthesis of a polymer on a filtering material in low-temperature glow discharge plasma in adamantane vapours is performed. First, a chamber with the filtering material is vacuumed, argon is supplied and gas discharge purification of material is carried out. After purification the chamber is re-vacuumed and vapours of adamantane are input with further ignition of the glow discharge to obtain a thin coating on the material surface.

EFFECT: invention makes it possible to render antibiotic (antifungal) properties to the surface of the filtering material.

1 ex

 

The invention relates to the field of reception and production of filter materials based on polymer fibers having antibiotic properties.

A method of obtaining material on the porous metal substrate, the selective layer of ceramics by drying at 200°C and compression at a temperature of 0.3-0.4 from the melting temperature of the powder (patent RF №2424083 from 20.07.2011, BI No. 20). However, this method is used for the ceramic material using solutions.

A method of obtaining a composite material consisting of a non-woven layer containing ion-exchange fiber-based graft copolymer polycaproamide with toporbottom the mass ratio knitted canvas and non-woven layer 1:(1.3 to 1.6) (RF patent 22307034 from 27.09.2007, BI No. 2), but this method of obtaining is designed to improve the functional properties of a composite material, and the material does not possess antibiotic properties.

A method of obtaining material containing as the basis of a non-woven fibrous material obtained by the method of blowing of molten polypropylene, polycarbonate and polyethylenterephtalate with the application on the basis of polymeric fibrous material salt solution of tin (II) hydrolysis to tin dioxide and subsequent heating in a microwave oven (patent RF №401153 from 10.10.2010, BI No. 28). The technical result of this decision is to obtain a material having sorptive properties towards various impurities. However, data obtained by way of filter materials do not possess antibiotic properties and can only be used for the purification of liquids.

Known for the synthesis of polymers in a glow discharge in pairs adamantane (Andreeva A.V., Sign V., Safonov, A.A. and other Polymerization vapor adamantane in a glow discharge // proceedings of Samara scientific center of RAS. Vol.13, No. 4, p.84-90, 2011, Samara). However, this method of synthesis is carried out for coating onto a non-conductive fabric and the electrodes, and the filter material is not used.

A method of obtaining a polymer coating using plasma-chemical synthesis (patent EA 10879 B1 from 30.12.2008). However, not specified, based on a monomer produces a polymer and that the latter is applied to the filter material.

A method of obtaining coatings on implant surfaces (patent US 20050220840 A1 from 06.10.2005). However, this method does not provide a coating on the filter material.

The closest in technical essence and the achieved result is the antiseptic way of processing the surface of a polymeric material, which consists in the formation of the surface is ti products antiseptic coating through biostorage of the drug on the basis of the nanosized powder of bentonite, intercalated by ions of silver or copper in a solution of a polymeric binder, and the formation of antiseptic coating of polymeric material on the basis of silicone rubber modification in an oxygen plasma (RF patent No. 2416435 from 20.04.2011, BI No. 11).

The technical result of the present invention to provide antibiotic cover to the filter material from the vapor adamantane in glow discharge plasma. The technical result is achieved in that the first chamber with filter material vaccum, serves argon and conduct a discharge of cleaning material; after cleaning the camera again vaccum and putting a pair of adamantane with subsequent ignition of the glow discharge for synthesis of the coating on the surface of the material.

A method of manufacturing the antibiotic coating on the filter material is carried out as follows. The filter material is placed in a chamber abnormal glow discharge of low pressure along the boundary of the positive column of a glow discharge between the electrodes, after which the vacuum chamber to a residual pressure of not higher than 10-3PA. Then the chamber was filled with argon to a working pressure of 80 PA. Lights glow discharge parameters are calibrated discharge (density current through the electrodes 2-5 a/m2), mount the Oia discharge 50-150 seconds. The camera then re-vacuumized to a pressure of 10-3PA, and then in the camera nauseosa pair of adamantane at a pressure of 15-100 PA. The electrode system elasmobranchii serves voltage 50 Hz - 20 kHz and strike a plasma glow discharge with a current density of discharge of 0.1 to 30 a/m2. The synthesis of the antibiotic coating is carried out until the thickness of 20-50 nm. The processing time is determined by the choice of vapour pressure adamantane, density and frequency of the discharge current.

The objective of the invention is to make the surface of the filter material antibiotic (antifungal) properties.

This problem is solved in such a way that according to the invention the surface of the filtering material is processed in the low-temperature glow discharge plasma of low pressure in pairs adamantane, resulting in a thin surface antifungal coating.

The applicant is unknown use in science and technology of the distinctive features of the proposed method with the achievement of the technical result.

Examples of specific performance of manufacturing the antibiotic filter material

Example 1.

The coated sample is placed in a vacuum chamber between the electrodes of the substrate. Is pumping atmospheric air to a pressure of 10-3PA, after which the camera napus the W argon to a working pressure of 80 PA. Lights glow discharge parameters are calibrated discharge current density through the electrode 3 a/m2), the burning time of discharge 100 seconds. The camera then re-vacuumized to a pressure of 10-3PA and then filled with the original connection - adamantane, to establish the working pressure of 80 PA. Translation of adamantane from the crystalline state to the gaseous is thermoresistive fusion. Adamantane in a gaseous state - a well-volatile compound that needle through the leak flows into the working chamber. The process takes place in a reactor operating in flow mode. The processing of material in the gas discharge varies in the range of 200-600 seconds. Density values of the discharge current is selected in the range from 1 to 15 a/m2the greatest values of the deposition rate observed in the range of 2-5 a/m2. The coating obtained has a more pronounced antifungal properties against Aspergillus niger in the case of processing for 300 seconds.

The advantages of the inventive method compared to known are the following:

1. Simple technological process of obtaining coverage.

2. The effectiveness of the process.

3. The result is a coating with antibiotic properties with respect to the surface of the used filter material.

4. Minor duration of the process.

The obtained filter material is used for manufacturing of air filters industrial premises.

The method of obtaining the antibiotic coating on the filter material, comprising the synthesis of the polymer in the low-temperature glow discharge plasma in pairs adamantane, characterized in that the first chamber with filter material vaccum, serves argon and conduct discharge the cleaning, after cleaning the camera again vaccum and putting a pair of adamantane with subsequent ignition of the glow discharge for synthesis of the coating on the surface of the material.



 

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