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A method for preparing a self-adhesive wound dressing

A wound dressing and self-adhesive technology, applied in the field of self-adhesive wound dressing preparation, can solve the problems of wound pain, easy wound infection, easy migration of silver ions, etc.

Active Publication Date: 2019-01-15
绍兴百立盛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the above-mentioned wound dressing does not have antibacterial effect, so it is prone to wound infection
Although the silver ion dressing has a good spectrum antibacterial effect, the silver ion is easy to migrate to the wound surface, which inhibits wound healing and causes wound pain.

Method used

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  • A method for preparing a self-adhesive wound dressing
  • A method for preparing a self-adhesive wound dressing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] (1) Under nitrogen protection, add 20 parts of styrene-ethylene-butadiene copolymer (Baling Petrochemical, SEBS YH-503) to 80 parts of 1,2-dichloroethane in a reaction kettle at 10°C in, stirred until dissolved, then added 1 part of chlorosulfonic acid, stirred and reacted for 18 hours, added 200 parts of ethanol for precipitation washing, and dried to obtain a copolymer composed of styrene-ethylene-butadiene and 4-vinylbenzenesulfonic acid. thing.

[0078] (2) Mix 10 parts by weight of butyl titanate and 90 parts by weight of absolute ethanol at 20°C, and add 1.5 parts by weight of nitric acid, 1.5 parts by weight of deionized water and 8 parts by weight of anhydrous alcohol in batches under strong stirring. The ethanol mixture was stirred vigorously for 30 min to obtain a transparent light yellow sol. The sol was dried at 75° C. for 12 hours, then calcined at 400° C. for 2 hours under a nitrogen atmosphere, and ground to obtain anatase-type nano-titanium dioxide cont...

Embodiment 2

[0085] (1) Under nitrogen protection, in a reactor at 60°C, add 16 parts by weight of liquid polybutadiene (Polyvest110 from Evonik, Germany) to 85 parts by weight of 1,2-dichloroethane, and stir until dissolved . Then add 4 parts by weight of fumaric acid and 0.1 part by weight of azobisisobutyronitrile, stir and react for 24 hours, add 300 parts by weight of ethanol for precipitation washing, and dry to obtain a block polymer composed of butadiene and fumaric acid .

[0086] (2) Add 10 parts by weight of titanium sulfate and 5 parts by weight of sodium tungstate to 85 parts by weight of deionized water in a polytetrafluoroethylene reactor, stir until dissolved, and then react at 180°C for 12 hours, after cooling Filtrate, wash with absolute ethanol, and grind to obtain anatase-type nano-titanium dioxide containing tungsten.

[0087] (3) At 20°C, 10 parts by weight of a copolymer composed of butadiene and fumaric acid are dispersed in a mixed solvent composed of 70% cyclohe...

Embodiment 3

[0093] (1) Take 10 weight parts of styrene-maleic anhydride copolymer (SMA-EF-80 of U.S. Cray Valley Company) at 20°C and disperse in 60% methylcyclohexane and 40% by volume In a mixed solvent composed of isopropanol, a polymer solution with a mass percentage of 8% was prepared.

[0094] (2) Under nitrogen protection, add 5 parts by weight of graphene oxide to 95 parts by weight of deionized water, stir until uniform, then add 10 parts by weight of butyl titanate, stir vigorously for 2 hours, add 200 parts by weight of ethanol Precipitate washing, drying at 75°C for 12h, calcining at 400°C for 2h under nitrogen atmosphere, and grinding to obtain anatase-type nano-titanium dioxide containing carbon.

[0095] (3) Take by weighing 0.5 parts by weight of anatase-type nano-titanium dioxide containing carbon, and disperse it in the polymer solution of step (1), to obtain a composite solution;

[0096] (4) The surface of the release film is coated with 0.15g / m 2 Silicone oil, the c...

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Abstract

The invention discloses a method for preparing a self-adhesive wound dressing, which comprises the following steps of: dispersing a visible light catalytic nanometer antibacterial material and a blockpolymer composed of a non-polar chain segment and a polar chain segment into a mixed solvent composed of a non-polar solvent and a polar solvent to prepare a composite solution; then coating the release film with the composite solution and drying to obtain an antibacterial moisture permeable layer; coating the antibacterial moisture permeable layer with the pressure-sensitive adhesive and dryingto form a self-adhesive antibacterial moisture permeable layer; at last, fixing the absorbent material onto the self-adhesive antibacterial moisture permeable layer to obtain a self-adhesive wound dressing which can absorb the liquid and is antibacterial and moisture permeable. The wound dressing prepared by the invention has extremely high moisture permeability and long-acting antibacterial property, and effectively avoids wound infection; It can absorb wound seepage, maintain wound moisture environment, promote wound healing and avoid scar formation. The dressing can be directly adhered tothe skin surface, easy to use, small irritation to the skin.

Description

technical field [0001] The invention relates to the technical field of wound antibacterial isolation materials, in particular to a preparation method of a self-adhesive wound dressing. Background technique [0002] An ideal wound dressing should have the functions of isolating the wound, blocking bacteria, controlling wound exudate, and promoting healing. With the advancement of science and technology, wound dressings have also developed from traditional natural gauze to polymer film dressings, exudate-absorbing dressings, bioactive dressings and other products to meet the diverse needs of different types and stages of wounds. [0003] The theory of wet healing holds that the moist environment on the wound surface facilitates the migration of epithelial cells and accelerates wound healing. Dressings with exudate absorption function have the advantages of absorbing pus, blood and exudate, and maintaining a moist environment on the wound surface. They are especially suitable ...

Claims

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Application Information

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IPC IPC(8): A61L15/18A61L15/24A61L15/28A61L15/42A61L15/46A61L15/58
CPCA61L15/18A61L15/24A61L15/28A61L15/42A61L15/46A61L15/58C08L53/00C08L33/02C08L5/04C08L5/08
Inventor 金伟伟徐意王鹏飞王震
Owner 绍兴百立盛新材料科技有限公司