WO2011071417A1 - Сорбционно-бактерицидный материал и способ его получения - Google Patents
Сорбционно-бактерицидный материал и способ его получения Download PDFInfo
- Publication number
- WO2011071417A1 WO2011071417A1 PCT/RU2010/000734 RU2010000734W WO2011071417A1 WO 2011071417 A1 WO2011071417 A1 WO 2011071417A1 RU 2010000734 W RU2010000734 W RU 2010000734W WO 2011071417 A1 WO2011071417 A1 WO 2011071417A1
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- WIPO (PCT)
- Prior art keywords
- particles
- bactericidal
- sorption
- aluminum
- material according
- Prior art date
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 57
- 239000002594 sorbent Substances 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 205
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- 238000000034 method Methods 0.000 claims abstract description 68
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 25
- WMWXXXSCZVGQAR-UHFFFAOYSA-N dialuminum;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3] WMWXXXSCZVGQAR-UHFFFAOYSA-N 0.000 claims abstract description 24
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 57
- 239000000243 solution Substances 0.000 claims description 46
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 33
- 229910052782 aluminium Inorganic materials 0.000 claims description 32
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 27
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 24
- 239000011630 iodine Substances 0.000 claims description 24
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- 238000006460 hydrolysis reaction Methods 0.000 claims description 12
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- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 12
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 12
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- VRAIHTAYLFXSJJ-UHFFFAOYSA-N alumane Chemical compound [AlH3].[AlH3] VRAIHTAYLFXSJJ-UHFFFAOYSA-N 0.000 claims description 3
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 14
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/18—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/18—Iodine; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/24—Heavy metals; Compounds thereof
- A61K33/38—Silver; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/70—Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
- A61K9/7007—Drug-containing films, membranes or sheets
Definitions
- the invention relates to the field of development of sorption-bactericidal materials for the purification of liquids and gases from fine particles and mythobiological contaminants, including for medical purposes. More specifically, the invention relates to the modification of sorption materials, as well as to a manufacturing method and methods for using sorption-bactericidal material.
- SUBSTITUTE SHEET (RULE 26) sorption treatment and final microfiltration on filter elements with a pore size of 0.5-10 microns.
- numerous sorbents are used in the cleaning process, including a bactericidal sorbent - a silver form of activated carbon.
- a sorption-filtering three-layer fibrous material for gas purification [RU 2188695 C2, 2002], the middle layer of which is made of ultrafine perchlorovinyl fibers containing activated carbon particles treated with silver nitrate, or from activated carbon fibers treated with silver nitrate.
- the bactericidal additive is on the surface of these materials either in the form of isolated ions or in the form of complex compounds. These materials, mentioned above, do not provide the necessary level of cleaning efficiency from colloidal particles and viruses, the size of which is within 30 nm. To the disadvantages is added that the bactericidal properties of the materials used are determined by the ions of the bactericidal components that pass into the cleaned medium during the filtration process, thus polluting it.
- Aggregates are colloidal particles of metals of nanostructured sizes and have special, unexpected properties, different both from the properties of isolated atoms and from bulk metal. Increased reactivity is associated with a more developed surface area and a more active surface of nanostructured particles.
- Stable nanostructured particles for example, silver, have a high bactericidal activity and are of interest for creating effective bactericidal filter elements on their basis for cleaning various media, ensuring effective cleaning not only of various impurities, but also of pathogens.
- a dressing kit is known [RU 71068 U1, 2008], in which the layer in contact with the skin has an additional layer containing metal particles of silver nanoparticles from 80 to 99.7%, iron from 0.1 to 20%, aluminum from 0, 1 to 20%, copper from 0.1 to 20% and a wound cover [RU 2314834 C1, 2008] based on woven and non-woven materials of natural or synthetic origin, containing metal particles having biological activity to the pathogenic flora, while as particles metal it contains silver nanoparticles from 80 to 99.7%, iron from 0.1 to 20%, aluminum from 0.1 to 20%, copper from 0.1 to 20%.
- Metal nanoparticles are deposited in a vacuum chamber using magnetron sputtering.
- the dressing kit is expensive and is obtained by sophisticated technology.
- a filter material for a gaseous medium [WO 2009031944 A2, 2009], which contains as a basis at least one layer of non-woven polymer fibrous material on the fibers of which are fixed particles of aluminum oxide hydrate.
- the material further comprises an antimicrobial additive represented by silver nitrate.
- the disadvantages of this material include the use, primarily, of ionic silver, since silver in ionic form is less active than silver in the form of colloidal silver as a bactericidal component.
- a filtering method is also described, including contacting a gaseous medium with a filtering material, in which the material is used to filter only gaseous media and is not suitable for filtering liquid media, and this is its drawback.
- the application [US 2008026041 A1, 2008] proposes a medical structure that we have chosen as a prototype for the proposed collection-bactericidal material as a medical sorbent.
- the medical structure includes, along with alumina nanofibres, second fibers mixed with alumina nanofibres, and particles dispersed on alumina nanofibres.
- the aforementioned particles may be a silver bactericidal agent.
- this medical structure is made using paper technology, i.e. the interfiber pore space is small, it does not have sufficient sorption capacity to absorb and retain wound exudate, which is the most important property of wound dressings.
- the technical problem to which the present invention is directed was the creation of a new sorption material with improved bactericidal properties while maintaining the sorption properties of a material suitable for sterilization of liquid or gas environments and sorption of fine particles, providing the possibility of long-term operation without biofouling, as well as preventing secondary bacterial infection of the filtrate and its contamination with heavy metals.
- the next technical objective of the invention was the development of a filtering method, including ensuring contact of liquid and gaseous media with the proposed sorption-bactericidal material.
- the next objective of the invention was the expansion of the arsenal of non-woven medical materials with high sorption properties, as well as antibacterial and antiviral activity and, as a result, wound healing ability.
- the task in the implementation of the claimed group of inventions on the subject - sorption-bactericidal material is achieved by the fact that the claimed sorption-bactericidal material includes at least one layer of a base of non-woven polymeric fibrous material with particles of aluminum oxide hydrate and an inorganic bactericidal component fixed on its fibers .
- the peculiarity lies in the fact that the inorganic bactericidal component is adsorbed on particles of aluminum oxide hydrate.
- the highly porous particles of alumina hydrate have a substantially plate-like shape with a side of 100-200 nm and a thickness of 5-8 nm.
- alumina hydrate particles is grouped into agglomerates of size 0.2-5.0 ⁇ m, specific surface area 100-350 m 2 / g, porosity 50-95%.
- the number of particles of aluminum oxide hydrate in it is 15-45 wt.%.
- a base of non-woven polymeric fibrous material it is formed by cellulose acetate, polysulfone or other bioinert polymer fibers having a diameter of 0.1-10 microns, preferably 1-3 microns.
- the aforementioned material is obtained, for example, by the method of electroforming or melt-blown technology, which allows to obtain non-woven materials with the mentioned fiber diameter.
- the content of the inorganic bactericidal component in the material is 0.05-2.5 mg / g of material.
- colloidal silver particles or complexes of iodine with polyvinylpyrrolidone or polyvinyl alcohol are selected as the inorganic bactericidal component.
- the particles of colloidal silver have a substantially spherical or nearly spherical shape in size from 5 to 50 nm, mainly 20-30 nm.
- the task is also achieved by the fact that in the method of producing sorption-bactericidal material on the base layer of non-woven polymer fibrous material, particles of an aluminum-based material are applied in the form of an aqueous or aqueous-alcoholic suspension, followed by hydrolysis of the particles of an aluminum-based material.
- the treatment is carried out by impregnation with a solution of an inorganic bactericidal component or by spraying the latter onto the material.
- the solution is impregnated with an inorganic bactericidal component for 10 minutes to 24 hours, preferably for 30-60 minutes, at room temperature.
- the processing time by spraying a solution of an inorganic bactericidal component on the material is determined by the method of applying the solution to the material, for example, manually or automatically.
- the treatment is carried out until the content of the inorganic bactericidal component in the material is 0.05-2.5 mg / g of material.
- Particles of colloidal silver or complexes of iodine with polyvinylpyrrolidone or polyvinyl alcohol were selected as the inorganic bactericidal component.
- the particles of colloidal silver are essentially spherical or close to spherical in size from 5 to 50 nm, mainly 20-30 nm.
- the treated sorption-bactericidal material is dried at a temperature of 80-100 ° C for 2-4 hours.
- the particles of aluminum oxide hydrate are essentially plate-shaped with a side of 100-200 nm and a thickness of 5-8 nm, at least a portion of the particles of aluminum oxide hydrate are grouped into agglomerates of a size of 0.2-5.0 microns, specific a surface of 150-350 m 2 / g, porosity of 50-95%, while the number of particles of aluminum oxide hydrate in the non-woven polymer fibrous material is 15-45 wt.%.
- the base of the nonwoven polymeric fibrous material is formed by cellulose acetate, polysulfone or other bioinert polymer fibers having a diameter of 0.1-10 microns, preferably 1-3 microns.
- the above material was obtained, for example, by the method electroforming, Melt-Blown technology, allowing to obtain non-woven materials with the mentioned fiber diameter.
- an aluminum powder is used as an aluminum-based material with a specific surface area of 7-28 m 2 / g, obtained by the method of electric explosion of wire or another method that allows to obtain aluminum powders of a given size.
- m 2 / g, preferably 11-27 m 2 / g. obtained by the method of electric explosion of wire or another method that allows to obtain aluminum powders of a given size and composition.
- the problem is also solved by the fact that the method of filtering liquid or gaseous media involves passing a liquid or gaseous medium through a sorption-bactericidal material made according to any one of claims 1 to 9 and obtained by the method according to any one of claims 10-23. Also the fact that the sorption-bactericidal material is part of the filter.
- sorption-bactericidal material retains electronegative particles, for example, bacteria, viruses, highly dispersed and colloidal particles, humic substances, bacterial endotoxins, nucleic acids, proteins, enzymes, etc.
- sorption-bactericidal material when filtering liquid media, 8-14 layers of sorption-bactericidal material are used to hold electronegative particles, for example, bacteria, viruses, bacterial endotoxins, nucleic acids, proteins, enzymes, etc. It is advisable that when filtering liquid media, 2-4 layers of sorption-bactericidal material are used to retain highly dispersed and colloidal particles, humic substances.
- the specified liquid medium is water, an aqueous solution, a biological fluid.
- the medical sorbent includes at least one layer of sorption-bactericidal material made according to any one of claims 1 to 9 and manufactured by the method according to any one of claims. 10-23, for medical and / or hygiene products, including wound dressings.
- Figure 1 shows highly porous particles of aluminum oxide hydrate in the form of unsystematically curved plates of irregular geometric shape (the picture was taken by transmission electron microscopy).
- Figure 2 shows an agglomerate of particles of alumina hydrate with sorbed colloidal silver particles, which are visible at the periphery of the agglomerate in the form of denser rounded inclusions (the image was taken by transmission electron microscopy).
- Fig. 3 shows agglomerates of alumina hydrate particles attached to a fiber of a nonwoven polymeric material (image taken by scanning electron microscopy).
- Figure 4 shows randomly arranged fibers of a nonwoven polymeric material with highly porous particles of aluminum oxide hydrate attached to them (the picture was taken by scanning electron microscopy).
- a non-woven polymeric fibrous material is used, modified by particles of aluminum oxide hydrate, which has high microorganism retention efficiency and, at the same time, low hydrodynamic resistance, has a developed specific surface area, high positive charge on the particle surface and high porosity to provide the necessary speed filtering.
- Alumina hydrate obtained by hydrolysis of aluminum nanopowders has a high specific surface and an electropositive charge.
- the advantage of materials made of polymer fibers is their chemical and biological inertness, the ability to maintain mechanical strength even after prolonged exposure to water, and is also able to absorb and retain a large volume of liquid in the interfiber pore space. These materials do not undergo microbiological decomposition, which is very important in the manufacture of filters.
- the non-woven polymeric material is formed by fibers, for example, from cellulose acetate, polysulfone, just has sufficient porosity and has a fiber diameter of 0.1-10 microns, preferably 1-3 microns.
- the use of a material with a smaller fiber diameter leads to an increase in the hydrodynamic resistance of the material, and fewer particles of aluminum oxide hydrate are attached to the material with a larger fiber diameter, which reduces the efficiency of cleaning the liquid and gaseous mixture from microorganisms and colloidal particles.
- Such materials with the desired fiber diameter are obtained by various methods, for example, by the method of electroforming, melt-blown technology, etc.
- the highly porous alumina hydrate particles fixed on the base have a substantially plate-like shape with a side of 100-200 nm and a thickness of 5-8 nm.
- the term “plate-like shape” of alumina hydrate particles is chosen because they are, most often, irregularly curved irregular plates geometric shape.
- Part of the particles of aluminum oxide hydrate is grouped into agglomerates with a size of 0.2-5.0 ⁇ m, a specific surface area of 100-350 m 2 / g, and a porosity of 50-95%.
- the minimum size of the agglomerates is determined by the size of the individual alumina hydrate plate, and the maximum size is determined by the initial concentration of the suspension of particles of aluminum-based material and their distribution along the length of the fiber of the base of non-woven polymeric material during the impregnation and subsequent hydrolysis of aluminum.
- the number of particles of alumina hydrate in the material is 15-45 wt.%. With a lower content of alumina hydrate particles in the material, the required sorption efficiency is not provided, and the upper limit of the alumina hydrate particles is determined by the sorption properties of the base of non-woven polymeric fibrous material.
- This material described above can be modified with a bactericidal component to give it antibacterial properties.
- bactericidal component for example, colloidal silver particles or complexes of iodine with polyvinylpyrrolidone or polyvinyl alcohol, or other drugs can be used. In this case, preference is given to colloidal silver particles.
- the content of the bactericidal component in the material is justified and amounts to 0.05-2.5 mg / g of non-woven material.
- Such a content of colloidal silver or iodine provides a bactericidal effect, and at the same time, the content of silver or iodine in the filtrate does not exceed the maximum permissible level and there is no secondary contamination of the filtrate with silver.
- Particles of colloidal silver are essentially spherical or close to spherical in size from 5 to 50 nm, mainly 20-30 nm. Particles of this size are well sorbed and retained by alumina hydrate particles.
- Obtaining the inventive sorption-bactericidal material is as follows. First of all, an aqueous or water-alcohol suspension of particles of an aluminum-based material with subsequent hydrolysis of the particles of the aluminum-based material to fix the alumina hydrate particles to the base fibers.
- an aluminum-based material an aluminum powder with a specific surface area of 7-28 m 2 / g obtained by the method of electric explosion of wire or another method that allows to obtain aluminum powders of a given size is used.
- the hydrolysis is carried out at a temperature of 30-80 ° C, preferably at 50-60 ° C for 30-90 minutes.
- the aluminum hydrolysis reaction has a sufficiently long induction period, which requires additional energy costs.
- the hydrolysis of the aluminum nitride composition proceeds with a shorter induction period, and the hydrolysis reaction rate is higher than in the case of aluminum hydrolysis.
- the basis of non-woven polymeric fibrous material with particles of aluminum oxide hydrate attached to it is squeezed to remove excess moisture under vacuum and dried at a temperature of 20-100 ° C for 2-4 hours.
- the resulting sorption material is treated with an inorganic bactericidal component.
- the treatment consists in impregnating a solution of an inorganic bactericidal component for a period not exceeding 24 hours at room temperature, preferably for 30-60 minutes, or spraying the latter onto the material.
- the processing time by spraying a solution of an inorganic bactericidal component on the material is determined by the method of applying the solution to the material, for example, manually or automatically. Processing is carried out until the content of the inorganic bactericidal component in 0.05-2.5 mg / g of nonwoven material. Particles of colloidal silver or complexes of iodine with polyvinylpyrrolidone or polyvinyl alcohol are not accidentally selected as an inorganic bactericidal component. In the case of using colloidal particles silver, the latter are better sorbed and retained by sorption material in comparison with silver ions. Silver ions are used mainly for the inactivation of microorganisms in solution and in filtering devices with a short service life.
- colloidal silver particles have a higher bactericidal activity compared to larger silver particles and silver ions. Particles of colloidal silver adsorbed on highly porous particles of alumina hydrate destroy microorganisms held by this sorption material. The bactericidal effect of this material with colloidal silver particles persists for a long time due to the fact that silver does not leach into the filtrate.
- a method of producing colloidal silver is known [Analytical chemistry of silver. I.V. Pyatnitsky, V.V. Sukhan. M: Science. 1975. S. 60] and is based on the reduction of silver nitrate with tannin in an alkaline environment.
- the concentration of colloidal silver in the resulting solution determines the particle size of colloidal silver and ranges from 14 to 140 mg / L. This concentration range is selected to obtain colloidal silver particles ranging in size from 5 to 50 nm. It is necessary to process the sorption material with such an amount of a solution of colloidal silver so that after its processing particles of colloidal silver 0.05-2.5 mg / g are adsorbed on it.
- iodine After processing the sorption material with a complex of iodine and polyvinylpyrrolidone, iodine from 0.05-2.5 mg / g is fixed on it.
- the treated sorption-bactericidal material is dried at a temperature of 80-100 ° C for 2-4 hours.
- the present invention provides a fundamental opportunity to solve these problems by imparting the required sorption and bactericidal properties to the non-woven polymer material.
- the invention is illustrated by the following examples and tables.
- sorption material For the manufacture of sorption material used a sheet of non-woven polymeric fibrous material from cellulose acetate grade PA-15-2. A sheet of non-woven polymeric fibrous material with a size of 50 * 50 cm was placed in an aqueous suspension of particles of an aluminitride composition with an AI / AIN-60: 40 ratio, kept for 20 minutes, then hydrolysis was carried out in a dry heat oven at a temperature of 60 ° C. Then, the obtained filter material was dried at 100 ° C to constant weight, and the content of alumina hydrate was determined by the gravimetric method. The content of alumina hydrate in the sorption material was 35%.
- a sample of sorption material was impregnated with a solution of colloidal silver.
- a solution of colloidal silver was prepared according to the following procedure: 30 ml of a buffer solution (pH 9.6), 20 ml of a tannin solution of 0.1% concentration, 10 ml of a 0.025 M silver nitrate solution were added to 940 ml of distilled water. In the resulting solution, the content of colloidal silver is 27 mg / L.
- a buffer solution a 0.05 M sodium tetraborate solution was added to 26.8 ml of a 0.1 M sodium hydroxide solution to a volume of 100 ml.
- a sample of sorption material was placed in the resulting solution, kept for 30 min at room temperature, squeezed and dried at a temperature of 100 ° ⁇ for 4 hours.
- the content of colloidal silver was 0.3 mg / g.
- sorption material For the manufacture of sorption material used a sheet of non-woven polymeric fibrous material from polysulfone with an average fiber diameter of 2 microns. A sheet of non-woven polymeric fibrous material measuring 50 * 50 cm was placed in an aqueous suspension of particles of an aluminitride composition with an AI / AIN-70: 30 ratio, kept for 20 min, then hydrolyzed in a dry heat oven at a temperature of 60 ° C. Then, the obtained filter material was dried at 100 ° C to constant weight, and the content of alumina hydrate was determined by the gravimetric method. The content of alumina hydrate in the sorption material was 31%.
- a sample of sorption material was impregnated with a solution of colloidal silver.
- a colloidal silver solution was prepared according to the following procedure: 30 ml of a buffer solution (pH 9.6), 20 ml of a tannin solution of 0.1% concentration, 15 ml of a 0.025 M silver nitrate solution were added to 940 ml of distilled water. In the resulting solution, the content of colloidal silver is 40 mg / L.
- a buffer solution a 0.05 M sodium tetraborate solution was added to 26.8 ml of a 0.1 M sodium hydroxide solution to a volume of 100 ml.
- a sample of sorption material was placed in the resulting solution, kept for 60 min at room temperature, squeezed and dried at a temperature of 100 ° ⁇ for 4 hours.
- the content of colloidal silver was 0.9 mg / g.
- a sample of the sorption material according to example 1 or 2 was impregnated with a solution of a complex of iodine with polyvinylpyrrolidone (complex of iodine with polyvinyl alcohol).
- a solution of the complex of iodine with polyvinylpyrrolidone was prepared according to the following procedure: 140 g of polyvinylpyrrolidone was dissolved in 0.8 l of distilled water, 150 ml of a solution containing 10 g of crystalline iodine and 10 g of potassium iodide was added, then the volume was adjusted to 1 l.
- a solution of the iodine complex with polyvinyl alcohol was prepared according to the following procedure: 9 g of polyvinyl alcohol was placed in a glass, stainless steel or enameled vessel with a capacity of 1 liter, 700-800 ml of water was poured and left for 0.5-3 hours to swell the polymer in order to increase its solubility. Then the vessel was heated for 0.5-1.5 hours at 90-100 ° C until a clear solution was obtained, after which it was cooled to room temperature. 100-150 ml of an aqueous solution containing 3 g of crystalline iodine and 3 g of potassium iodide was introduced into the resulting solution, after which the volume was adjusted with water to 1 liter.
- a 47 mm disk was cut out, consisting of 14 layers of sorption-bactericidal material obtained according to examples 1 or 2, and placed in a Sortorius test cell. The tests were performed on a pressure filtering unit of the Vladisart NE-100 company.
- bacterial endotoxin can form, which, when released into water, can cause allergic reactions.
- the concentration of bacterial endotoxin in model water and filtrates was determined in vitro using the LAL test. The results are shown in table 3.
- a 14-layer cartridge with a height of 10 inches was made.
- the cartridge was fixed in a filter holder and tap water contaminated with E. coli bacteria was passed for 60 days.
- the concentration of E. coli throughout the test period was not less than 10 3 CFU / 100 ml of solution.
- the efficiency of microbiological treatment during the entire test period was 100%.
- the maximum filter load was 1, 53x 10 5 CFU / cm 2 .
- bacteria do not grow on the sorption-bactericidal material and wash them into the filtrate, which is confirmed by the data indicated in table 4.
- a model solution of colloidal iron was passed through a cell with a 4-layer sorption-bactericidal material obtained according to examples 1 or 2 in the form of a disk with a diameter of 47 mm.
- the iron content in the filtrate was determined by the photocolorimetric method (GOST 401 1-72 Drinking water. Methods for measuring the mass concentration of total iron).
- Examples NQ 20-23 prove that an increase in the concentration of colloidal iron in water does not lead to a decrease in filtration efficiency, however, there is a decrease in performance and filter life for due to clogging of the sorption-bactericidal material with colloidal particles, which is reflected in table 5.
- the total bacterial contamination of the air or the microbial number was determined by taking an air sample on Petri dishes with nutrient medium using the Krotov apparatus. For this, a Petri dish with a thin layer of nutrient medium was mounted on a rotating table of the Krotov apparatus. The lid with a wedge-shaped slit for sucking air was lowered from above and closed hermetically. A disc of sorption-bactericidal material obtained in Examples 1 or 2 with a size of 100 mm was placed over the lid.
- examples 37-39 used samples of a sorption-filter material with different content of particles of hydrate of aluminum oxide and silver, obtained in example 1 or 2.
- mice 1) - 20 mice;
- the inventive sorption-bactericidal material has a positive effect on the healing of skin flap wounds, reducing the healing time of wound damage, increasing the number of animals with complete epithelization of the wound defect, the layer of epithelial cells is thinner and more even.
- sorption-bactericidal material more active maturation of granulation tissue occurs.
- a dressing based on sorption-bactericidal material was tested on 9 volunteers. Of these, 3 people with torn corns, 2 people with torn knees, 1 person with weeping neurodermatitis in their hands, 2 people with cut wounds in their hands and 1 person with a lacerated purulent wound to their legs.
- Sorption-bactericidal material effectively absorbs and retains wound exudate and purulent discharge of an infected wound, which creates favorable conditions for wound healing.
- the mechanism of this effect is associated with a high sorption capacity of the fibrous material, the holding ability and antibacterial properties of the material.
- the use of material allows you to create optimal moisture conditions in the wound. The material accelerates wound healing, having a positive effect on tissue regeneration processes in the wound.
- Example 40 We used samples of a sorption-filter material with different content of particles of aluminum oxide hydrate and iodine complex, obtained in example 3.
- a dressing based on sorption-bactericidal material was tested on 3 volunteers with purulent wounds of various localization.
- Sorption-bactericidal material effectively absorbs and retains wound exudate and purulent discharge of an infected wound, which creates favorable conditions for wound healing, in addition, iodine from the complex is gradually released into the wound, having an antiseptic effect.
- the material accelerates wound healing, having a positive effect on tissue regeneration processes in the wound.
- the proposed sorption-bactericidal material possesses, along with high sorption properties, improved bactericidal properties, while it provides the possibility of long-term operation without biofouling, prevents secondary bacterial infection of the filtrate and its contamination with heavy metals, which allows it to be effectively used for sterilization of liquid or gas media and sorption of highly dispersed particles in various industrial and medical facilities where high purity requirements are required ear, in domestic, industrial liquids purification systems, in particular water, as well as in medicine as a sorbent for the medical treatment, hygiene products, including wound dressings.
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- Veterinary Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Pharmacology & Pharmacy (AREA)
- Inorganic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Hematology (AREA)
- Materials Engineering (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Filtering Materials (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
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Abstract
Description
Claims
Priority Applications (3)
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BR112012013697A BR112012013697A2 (pt) | 2009-12-07 | 2010-12-06 | material sorvente bactericida e método para a sua produção. |
DE212010000186U DE212010000186U1 (de) | 2009-12-07 | 2010-12-06 | Bakterizides Sorptionsmaterial |
RS20120233A RS20120233A1 (en) | 2009-12-07 | 2010-12-06 | BACTERICIDE SORBENT MATERIAL AND METHOD FOR ITS MANUFACTURING |
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RU2009145229 | 2009-12-07 | ||
RU2009145229/15A RU2426557C1 (ru) | 2009-12-07 | 2009-12-07 | Сорбционно-бактерицидный материал, способ его получения, способ фильтрования жидких или газообразных сред, медицинский сорбент |
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WO2011071417A1 true WO2011071417A1 (ru) | 2011-06-16 |
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BR (1) | BR112012013697A2 (ru) |
DE (1) | DE212010000186U1 (ru) |
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RU (1) | RU2426557C1 (ru) |
WO (1) | WO2011071417A1 (ru) |
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CN112522853A (zh) * | 2020-12-14 | 2021-03-19 | 樊军歌 | 一种自杀菌、自消毒材料的生产方法 |
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WO2014014789A1 (en) * | 2012-07-14 | 2014-01-23 | George Page | Gravity multi-layer absorption filtration apparatuses, systems, & methods |
RU2560432C2 (ru) * | 2013-05-20 | 2015-08-20 | Федеральное государственное бюджетное учреждение науки Институт физики прочности и материаловедения Сибирского отделения Российской академии наук (ИФПМ СО РАН) | Агломераты оксигидроксидов металлов и их применение |
RU2546014C2 (ru) * | 2013-08-21 | 2015-04-10 | Федеральное государственное бюджетное учреждение науки Институт физики прочности и материаловедения Сибирского отделения Российской академии наук (ИФПМ СО РАН) | Антисептический сорбционный материал, способ его получения и повязка для лечения ран на его основе |
RU2620115C1 (ru) * | 2015-12-16 | 2017-05-23 | Федеральный научно-клинический центр специализированных видов медицинской помощи и медицинских технологий Федерального медико-биологического агентства (ФНКЦ ФМБА России) | Сорбенты для выделения из воды и водных растворов неорганических солей эндотоксинов |
RU2705989C1 (ru) * | 2018-12-26 | 2019-11-13 | Федеральное государственное бюджетное учреждение науки Институт физики прочности и материаловедения Сибирского отделения Российской академии наук (ИФПМ СО РАН) | Применение низкоразмерных двумерных (2D) складчатых структур оксигидроксида алюминия (ALOOH) для преодоления устойчивости бактерий к антибиотикам |
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RU2171694C1 (ru) * | 2000-12-15 | 2001-08-10 | Ооо "Мк Асептика" | Медицинское изделие |
RU2311804C1 (ru) * | 2006-05-02 | 2007-12-10 | Меграбян Казарос Аршалуйсович | Водорастворимая бактерицидная композиция |
US20080026041A1 (en) * | 2005-09-12 | 2008-01-31 | Argonide Corporation | Non-woven media incorporating ultrafine or nanosize powders |
WO2009031944A2 (ru) * | 2007-09-04 | 2009-03-12 | Institute Of Strength Physics And Materials Science Siberian Branch Of The Russian Academy Of Sciences | Фильтрующий материал для газообразной среды |
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WO1996020139A1 (fr) | 1994-12-28 | 1996-07-04 | Roman Andreevich Penzin | Systeme de purification et de conditionnement d'eau potable et charge de filtre destine a la purification d'eau potable |
RU2188695C2 (ru) | 2000-11-23 | 2002-09-10 | Научно-исследовательский физико-химический институт им. Л.Я.Карпова | Сорбционно-фильтрующий материал, фильтр для очистки газов, аналитическая сорбционно-фильтрующая лента и фильтрующая полумаска для защиты органов дыхания на его основе |
RU2314834C1 (ru) | 2006-07-10 | 2008-01-20 | Светлана Васильевна Добыш | Раневое покрытие |
RU71068U1 (ru) | 2007-10-11 | 2008-02-27 | Общество с ограниченной ответственностью "Предприятие "ВЛАДЕКС" (ООО"Предприятие "ВЛАДЕКС") | Перевязочный комплект |
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- 2010-12-06 BR BR112012013697A patent/BR112012013697A2/pt not_active Application Discontinuation
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- 2010-12-06 DE DE212010000186U patent/DE212010000186U1/de not_active Expired - Lifetime
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RU2171694C1 (ru) * | 2000-12-15 | 2001-08-10 | Ооо "Мк Асептика" | Медицинское изделие |
US20080026041A1 (en) * | 2005-09-12 | 2008-01-31 | Argonide Corporation | Non-woven media incorporating ultrafine or nanosize powders |
RU2311804C1 (ru) * | 2006-05-02 | 2007-12-10 | Меграбян Казарос Аршалуйсович | Водорастворимая бактерицидная композиция |
WO2009031944A2 (ru) * | 2007-09-04 | 2009-03-12 | Institute Of Strength Physics And Materials Science Siberian Branch Of The Russian Academy Of Sciences | Фильтрующий материал для газообразной среды |
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CN112522853A (zh) * | 2020-12-14 | 2021-03-19 | 樊军歌 | 一种自杀菌、自消毒材料的生产方法 |
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DE212010000186U1 (de) | 2012-12-13 |
RS20120233A1 (en) | 2012-12-31 |
RU2426557C1 (ru) | 2011-08-20 |
BR112012013697A2 (pt) | 2015-10-27 |
RS1350U (en) | 2013-12-31 |
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