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PDA-MnO2 film as well as preparation method and application thereof

A film and adhesive technology, used in pharmaceutical formulations, medical preparations with inactive ingredients, and medical preparations containing active ingredients, etc., can solve problems such as easy breakage and application limitations, and achieve good stability and good biological Compatibility effect

Active Publication Date: 2021-08-24
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, an additional base material needs to be provided, and at the same time, due to the thin film thickness, it is easily damaged during use; its application is limited

Method used

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  • PDA-MnO2 film as well as preparation method and application thereof
  • PDA-MnO2 film as well as preparation method and application thereof
  • PDA-MnO2 film as well as preparation method and application thereof

Examples

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Embodiment 1

[0022] 1. Preparation of Adsorbent Polydopamine Nanospheres

[0023] 40mL of ethanol (C 2 h 5 OH) solution by adding 2 mL of ammonium hydroxide (NH 4 OH) solution, made a mixture with 90mL deionized water, and stirred at room temperature for 0.5h. Weigh 0.5 g of dopamine hydrochloride, dissolve it with 10 mL of deionized water to prepare a solution, add it to the above mixture, and then stir the solution for 1 day. After the reaction, the solution was centrifuged to obtain a black precipitate, washed three times with ultrasonic deionized water, and dried in a blast drying oven for 24 hours to obtain polydopamine nanospheres.

[0024] 2. Adsorbent PDA-MnO 2 Preparation of Nanospheres

[0025] Weigh 0.13 g of polydopamine nano-microspheres, dissolve them in 45 mL of deionized water to form a solution, adjust the pH to 1 with hydrochloric acid, and then sonicate for 15 min. 12.5mL of 0.05mol·L -1 Potassium permanganate (KMnO 4 ) solution was added to the polydopamine nano...

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Abstract

The invention discloses a PDA-MnO2 film as well as a preparation method and application thereof, and belongs to the technical field of antibacterial film materials. The preparation method comprises the following steps: dissolving PDA-MnO2 powder in deionized water to prepare a PDA-MnO2 solution, adding an adhesive, performing oscillating, and standing to obtain a PDA-MnO2 film; during preparation, selecting the adhesive dialdehyde polyethylene glycol in a targeted manner, wherein the prepared PDA-MnO2 film does not need an additional carrier. The PDA-MnO2 thin film has a good inhibition effect on escherichia coli or staphylococcus aureus, bacteria can be completely killed under the condition of near-infrared light irradiation, meanwhile, MnO2 on the surface of the PDA-MnO2 thin film consumes some reducing substances in the bacteria in the heating process, and a better antibacterial effect is achieved. The antibacterial property and the structure of the film material have very good stability, and the film material can be applied to preparation of antibacterial materials.

Description

technical field [0001] The invention belongs to the technical field of antibacterial film materials, in particular to PDA-MnO 2 Thin films and their methods of preparation and applications. Background technique [0002] Bacterial infection is a serious threat to human health and safety. Although traditional antibiotics can effectively kill bacteria, the abuse of antibiotics has also led to the formation of a variety of drug-resistant bacteria. Once drug-resistant bacteria are formed, general drugs will have little effect on them. Therefore, it is urgent to develop a new antibacterial material with high efficiency and no drug resistance. With the development of nanotechnology, a series of nanomaterials with antibacterial properties have been developed. Because of their high-efficiency broad-spectrum bactericidal properties, high safety, and no drug resistance, they have great application potential in the treatment of bacterial infections. Au, Ag, Zn, etc. are commonly us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K41/00A61K47/10A61P31/04
CPCA61K41/0052A61K47/10A61P31/04Y02A50/30
Inventor 卢然田丽婷冉杰马丽程珂吴光瑜
Owner NANJING FORESTRY UNIV
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