Antibacterial wound dressing based on visible light up-conversion material and preparation method thereof

A technology for converting materials and wound dressings, which can be used in pharmaceutical formulations, medical science, absorbent pads, etc., and can solve problems such as bacterial resistance.

Pending Publication Date: 2021-03-09
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, provide a kind of antibacterial wound dressing based on vi...

Method used

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  • Antibacterial wound dressing based on visible light up-conversion material and preparation method thereof
  • Antibacterial wound dressing based on visible light up-conversion material and preparation method thereof
  • Antibacterial wound dressing based on visible light up-conversion material and preparation method thereof

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preparation example Construction

[0033] The invention discloses an up-converted visible light bacteriostatic wound auxiliary material and a preparation method thereof. The specific preparation process includes:

[0034] 1) Add 2.6g of cetyltrimethylammonium bromide to 120ml of water, 600w ultrasonic treatment for 10 minutes to accelerate dissolution to obtain cetyltrimethylammonium bromide solution A, add 50ml of ethanol to solution A, 12ml of ammonia water, magnetically stirred until uniform, to obtain solution B. Add 4ml tetraethyl orthosilicate to solution B dropwise, making solution B gradually become turbid until a large amount of white precipitate appears, and keep stirring for 30 minutes to make it fully react. The white precipitate was repeatedly washed with deionized water and centrifuged several times, and then placed in an electric blast dryer at 60-80°C for 6-8 hours to completely dry it to obtain white solid C. After the white solid C was ground, it was kept in a muffle furnace at 550° C. for ca...

Embodiment 1

[0042] 1) Add 2.6g of cetyltrimethylammonium bromide to 120ml of water, 600w ultrasonic treatment for 10 minutes to accelerate the dissolution, to obtain cetyltrimethylammonium bromide solution A, add 50ml of ethanol to solution A , 12ml of ammonia water, magnetically stirred until uniform, and solution B was obtained. Add 4ml tetraethyl orthosilicate to solution B dropwise, making solution B gradually become turbid until a large amount of white precipitate appears, and keep stirring for 30 minutes to make it fully react. The white precipitate was repeatedly washed with deionized water and centrifuged several times, and then placed in an electric blast dryer at 60°C for 6 hours to completely dry it to obtain a white solid C. After the white solid C was ground, it was kept in a muffle furnace at 550° C. for calcination for 5 h to obtain white mesoporous silica powder.

[0043] 2) Mix 2.025g of yttrium oxide with 13.5ml of nitric acid solution (V fuming nitric acid: V deionized...

Embodiment 2

[0051] Calcination temperature in this embodiment The calcination temperature of the white solid in Step 2 is 800° C., and the rest are the same as in Example 1.

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Abstract

The invention discloses an antibacterial wound dressing based on a visible light up-conversion material and a preparation method of the antibacterial wound dressing. The dressing takes a chitosan filmas a carrier, a large number of Y2SiO5: Pr < 3 + > and Li < + > particles are embedded in the chitosan film. The dressing utilizes a large number of amino groups on a natural polymer material chitosan (CTS) to kill bacteria, and a rare earth up-conversion material is added on the basis. As a unique optical material, the rare earth up-conversion material can realize anti-Stokes luminescence, continuously absorb two or more low-energy photons to transition to a higher energy level, and when the photons return to the ground state, they can emit short-wavelength visible or ultraviolet light.

Description

【Technical field】 [0001] The invention belongs to the technical field of antibacterial auxiliary materials, and in particular relates to an antibacterial wound dressing based on a visible light up-conversion material and a preparation method thereof. 【Background technique】 [0002] Nowadays, due to the inevitable wound care problems caused by various accidents, wound dressings provide a suitable environment to promote wound healing, protect damaged tissues and prevent bacterial invasion. The wound healing process is relatively complex, mainly including three stages, inflammatory response, cell proliferation and tissue regeneration. Wound healing takes a long time. If the wound is not protected during the healing process and exposed to the external environment, it is easy to cause bacterial infection and secondary damage. Therefore, wound dressings are of great significance in the wound healing process. At present, among the most widely used medical dressings for skin wounds...

Claims

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Application Information

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IPC IPC(8): A61L15/28A61L15/44A61L15/46A61L15/18
CPCA61L15/28A61L15/44A61L15/46A61L15/18A61L2300/236A61L2300/102A61L2300/404A61L2300/624C08L5/08
Inventor 赵航张良钟吕玲
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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