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A kind of pure natural mosquito repellent band-aid and preparation method thereof

A band-aid, a pure natural technology, applied in the medical field, can solve the problems of chitosan fiber difficulties, the effective duration of mosquito repellent needs to be improved, and the band-aid has no mosquito repellent effect, and achieves the effect of wide application range, simple use and wide source

Active Publication Date: 2017-04-19
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Invention No. 201410718164.8 The wound protection layer is composed of nano-bacterial cellulose freeze-dried membrane and electrospun chitosan-containing nanofiber membrane, but it is difficult to directly prepare chitosan fiber by electrospinning, and the band-aid does not have mosquito repellent effect
In the invention CN 104430294 A, the mosquito repellent layer is mainly made of essential oil extracted from traditional Chinese medicine, which has a good mosquito repellent effect, but does not have a sustained release effect, so the effective time of mosquito repellent needs to be improved, and it does not have the function of protecting wounds

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Dissolve 4 wt% chitosan and cellulose (mass fraction ratio of raw materials: chitosan / cellulose = 1:6) in nitrogen methyl morpholine solution, the casting solution is centrifuged and degassed on a hot glass plate Scrape to form a film, and then quickly immerse in a water coagulation bath for 20 minutes to obtain an asymmetric film. The newly prepared asymmetric film was washed with flowing tap water and deionized water to remove residual solvent. Freeze-dried and autoclaved for later use. Using supercritical CO 2 Extract wormwood essential oil. Dissolve wormwood essential oil in sweet almond oil at a dilution rate of 2.5%, and prepare a mixed solution of re-diluted wormwood essential oil and glycerin at a ratio of 0.05 mL: 10 mL. Under sterile conditions, the chitosan / cellulose composite membrane was soaked in the above-mentioned mixed solution of wormwood essential oil and glycerin in an adjustable constant temperature dipping device. The soaking temperature was 20 ...

Embodiment 2

[0029] Dissolve 4 wt% chitosan and cellulose (mass fraction ratio of raw materials: chitosan / cellulose = 1:6) in ionic liquid, and scrape the casting solution on a hot glass plate to form a film after centrifugal defoaming , and then quickly immersed in a water coagulation bath for 20 min to obtain an asymmetric membrane. The newly prepared asymmetric film was washed with flowing tap water and deionized water to remove residual solvent. Freeze-dried and autoclaved for later use. Using supercritical CO 2 Extract wormwood essential oil. The wormwood essential oil was dissolved in sweet almond oil, and the dilution amount was 1%, and the re-diluted wormwood essential oil and glycerin were prepared as a mixed solution at 0.05 mL: 10 mL. Under sterile conditions, the chitosan / cellulose composite membrane was soaked in the above-mentioned mixed solution of wormwood essential oil and glycerin in an adjustable constant temperature dipping device. Floor. Under aseptic conditions, ...

Embodiment 3

[0031] Dissolve 4 wt% chitosan and cellulose (mass fraction ratio of raw materials: chitosan / cellulose = 1:6) in 72wt% ZnCl 2 In the aqueous solution, the casting liquid is centrifuged and defoamed, scraped on a hot glass plate to form a film, and then quickly immersed in a water coagulation bath for 20 minutes to obtain an asymmetric film. The newly prepared asymmetric film was washed with flowing tap water and deionized water to remove residual solvent. Freeze-dried and autoclaved for later use. Using supercritical CO 2 Extract wormwood essential oil. Dissolve wormwood essential oil in sweet almond oil at a dilution rate of 0.8%, and prepare a mixed solution of re-diluted wormwood essential oil and glycerin at 0.05 mL: 10 mL. Under sterile conditions, the chitosan / cellulose composite film was soaked in the above-mentioned mixed solution of wormwood essential oil and glycerin in an adjustable constant temperature dipper, the soaking temperature was 25 °C, and the soaking t...

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Abstract

The invention discloses a purely natural mosquito-repellent band-aid and a preparation method thereof. The wound protection layer of the band-aid has hemostatic, antibacterial and heal-promoting functions, and the mosquito-repellent layers have a long-acting mosquito-repellent function. The mosquito-repellent band-aid structurally comprises an air-permeable adhesive tape layer, the wound protection layer bonded in the center of the air-permeable adhesive tape layer and the mosquito-repellent layers at the two ends, wherein the wound protection layer and the mosquito-repellent layers consist of chitosan and cellulose blended composite freeze-dried membranes. The wound protection layer contains liquid medicine, feels soft, is water-holding and air-permeable, and has the advantage of moist dressing; the mosquito-repellent layers contain wormwood essence oil, feel soft, are water-holding and air-permeable, have a slow-release effect and realize long-acting mosquito repelling.

Description

technical field [0001] The invention relates to a band-aid and a preparation method thereof, in particular to a pure natural mosquito repelling band-aid and a preparation method thereof, and belongs to the field of medical technology. Background technique [0002] Especially in families with children in daily life, children are prone to scratches and injuries. Band-aids have become one of the must-haves for families because of their ease of use and low price. But children are also prone to attract mosquitoes. Whenever summer comes, finding good mosquito repellent for children is also a hot spot for parents. If the small wound is bitten by mosquitoes again, the child can hardly bear the itching, scratching willfully cause wound infection, and the consequences will be unimaginable. Band-aids currently on the market are generally only aimed at protecting small wounds, without taking into account the protection around the wound. Therefore, it is urgent to invent a kind of pure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L15/44A61L15/28
Inventor 林珊陈礼辉黄六莲高燕龙饶久平张震
Owner FUJIAN AGRI & FORESTRY UNIV
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