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Nano-silver/graphene/polymer composite antibacterial emulsion and preparation method thereof

A composite antibacterial and graphene technology, applied in antifouling/underwater coatings, coatings, paints containing biocides, etc., can solve the problems of easy agglomeration of nano silver particles and restrictions on application fields, so as to improve the antibacterial effect and improve the The effect of dispersibility and good antibacterial properties

Active Publication Date: 2015-12-30
杭州微纳卫康新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of silver nanoparticles is restricted because they are easy to agglomerate

Method used

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  • Nano-silver/graphene/polymer composite antibacterial emulsion and preparation method thereof
  • Nano-silver/graphene/polymer composite antibacterial emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] ① Disperse 2.0 g of graphene oxide (with an oxygen content of 22.4 wt%) in 500 ml of purified water by ultrasonic (frequency 100 Hz) at 30°C.

[0045] ②Dissolve 25g of F108 in 500ml of pure water at 30℃, then add 45g of AgNO 3 , stir to dissolve.

[0046] ③Combine the graphene oxide aqueous solution prepared in step ① with the solution containing F108 and AgNO prepared in step ② 3 The aqueous solutions were mixed in equal volumes, and treated with ultrasound (frequency 100 Hz) for 3 hours at 30° C. to prepare an aqueous solution containing nano-silver / graphene composites. Stand still for 3 hours, pour off the supernatant, and then wash the precipitate repeatedly with pure water and absolute ethanol until there is no Ag in the washing solution. + After detection, the product was dried in a vacuum oven at 60°C for 24 hours to obtain a nano-silver / graphene composite.

[0047] ④Dissolve 25g of F108 in 500ml of purified water at 30°C, then add 27.5g of methyl methacrylate...

Embodiment 2

[0055] ① Disperse 1.7 g of graphene oxide (with an oxygen content of 19.2 wt%) (frequency 100 Hz) in 500 ml of pure water at 30° C. by ultrasound.

[0056] ②Dissolve 20g of F98 in 500ml of pure water at 30℃, then add 40g of AgNO 3 , stir to dissolve.

[0057] ③ Combine the graphene oxide aqueous solution prepared in step ① with the F98 and AgNO solution prepared in step ② 3 The aqueous solutions were mixed in equal volumes, and treated with ultrasound (frequency 100 Hz) for 3 hours at 30° C. to prepare an aqueous solution containing nano-silver / graphene composites. Stand still for 3 hours, pour off the supernatant, and then wash the precipitate repeatedly with pure water and absolute ethanol until there is no Ag in the washing solution. + After detection, the product was dried in a vacuum oven at 60°C for 24 hours to obtain a nano-silver / graphene composite.

[0058] ④Dissolve 20g of F98 in 500ml of purified water at 30°C, then add 25g of methyl methacrylate, stir to dissolv...

Embodiment 3

[0066] ① Disperse 1.5g of graphene oxide (with an oxygen content of 16.3wt%) in 500ml of purified water by ultrasonic (frequency 100Hz) at 30°C.

[0067] ②Dissolve 15g of F88 in 500ml of pure water at 30℃, then add 35g of AgNO 3 , stir to dissolve.

[0068] ③ Combine the graphene oxide aqueous solution prepared in step ① with the F88 and AgNO 3 The aqueous solutions were mixed in equal volumes, and treated with ultrasound (frequency 100 Hz) for 3 hours at 30° C. to prepare an aqueous solution containing nano-silver / graphene composites. Stand still for 3 hours, pour off the supernatant, and then wash the precipitate repeatedly with pure water and absolute ethanol until there is no Ag in the washing solution. + After detection, the product was dried in a vacuum oven at 60°C for 24 hours to obtain a nano-silver / graphene composite.

[0069] ④Dissolve 15g of F88 in 500ml of pure water at 30°C, then add 22.5g of methyl methacrylate, stir to dissolve, add 45mg of the nano-silver / g...

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Abstract

The invention discloses a nano-silver / graphene / polymer composite antibacterial emulsion and a preparation method thereof. The preparation method comprises the steps that graphene oxide is ultrasonically dispersed in water to obtain a solution A; a polyoxyethylene-polyoxypropylene-polyoxyethylene segmented copolymer and AgNO3 dissolve in water to obtain a solution B; the polyoxyethylene-polyoxypropylene-polyoxyethylene segmented copolymer dissolves in water and then acrylate is added to obtain a solution C; The solution A and the solution B are mixed to obtain a nano silver / graphene compound water solution, and a nano silver / graphene compound is obtained through treatment; then, the nano silver / graphene compound is mixed with the solution C, an initiator is added to perform polymerization reaction so as to obtain the nano-silver / graphene / polymer composite antibacterial emulsion. By means of the preparation method, nano-silver particles can be evenly supported on graphene, the nano silver / graphene compound is evenly dispersed in a polymer emulsion to form the stable nano-silver / graphene / polymer composite antibacterial emulsion, and the prepared composite antibacterial emulsion has good antibacterial performance.

Description

technical field [0001] The invention belongs to the field of nanocomposite materials and antibacterial technology, in particular to a preparation method of nano silver / graphene / polymer composite antibacterial emulsion. Background technique [0002] Nano-silver particles have high specific surface area, unique physical and chemical properties, and efficient antibacterial activity. They have been widely used in coatings of medical devices, medical dressings, water filtration, gauze and other health-related products. During the synthesis process of nano-silver particles in water medium, the surfactant has the function of solubilization and stabilization. At the same time, when the drug interacts with the human body, the surfactant has an auxiliary function. It can be incorporated into the cell membrane and translocated to the inside of the cell, thereby improving the pharmacological activity of the antibacterial agent. [0003] Graphene is based on sp 2 Hybrid single carbon a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F2/24C08K3/04C08K3/08C09D133/12C09D7/12C09D5/14
Inventor 吴礼光钟振宇张嘉威黄豪倩
Owner 杭州微纳卫康新材料有限公司
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