Method for preparing nano-silver antibacterial material based on Diels-Alder reaction
A nano-silver antibacterial and nano-silver technology, which is applied in the field of nanomaterials and antibacterial materials, can solve the problems of uncontrollable activity, difficulty in regulating antibacterial activity, and limitations.
Active Publication Date: 2017-05-31
QILU UNIV OF TECH
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Problems solved by technology
[0004] However, the current silver antibacterial materials still have some limitations, for example: organic antibacterial agents can be easily designed with controlled release properties, and are widely used in the fields of drug delivery, tissue engineering and molecular imaging; however, for nano silver antibacterial materials, It is difficult to control its antibacterial activity, and the uncontrollable activity leads to limited application
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[0013] A method for preparing nano silver antibacterial material based on Diels-Alder reaction, including the following steps:
[0014] (1) Functionalization of silver nanoparticles
[0015] Add the silver nanoparticle solution to the ethylene glycol solution and stir evenly to prepare a nanosilver-containing mixture; then, slowly drop the dimethylformamide solution containing furfuryl mercaptan into the nanosilver-containing mixture; Stir at 100-130°C for 2-6 hours, cool to room temperature after the reaction, to obtain a furan-functionalized silver nanoparticle solution;
[0016] (2) Crosslinking of silver nanoparticles
[0017] Dissolve N,N'-(4,4'-methylenediphenyl)dimaleimide in dimethylformamide, stir evenly, and add to the solution of furan-functionalized silver nanoparticles. The mixture is stirred and reacted at different temperatures within the range of 50-130°C for 1 to 6 hours. After the reaction solution is centrifuged, the precipitate is washed with acetone and vacuum dr...
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The invention relates to a method for preparing a nano-silver antibacterial material based on Diels-Alder reaction. The method comprises the steps of firstly preparing a furan-functionalized silver nanoparticle solution, then adding the furan-functionalized silver nanoparticle solution into a dimethylformamide solution of N,N'-(4,4'-Methylenediphenylene)dimaleimide, and carrying out stirring reaction at different temperatures within a temperature range of 50-130 DEG C for 1-6 hours to obtain the nano-silver antibacterial material with different antibacterial activity. On the basis of DA reaction between furan and bismaleimide, silver nanoparticles are combined through reversible crosslinking reaction to obtain the nano-silver antibacterial material with different shapes and forms and sizes, so that the antibacterial activity is controllable and adjustable and the application range is expanded.
Description
Technical field [0001] The invention relates to a preparation method of nano silver antibacterial material with controllable antibacterial activity, in particular to a method for preparing nano silver antibacterial material based on Diels-Alder reaction, and belongs to the technical field of nano materials and antibacterial materials. Background technique [0002] In the past few decades, research on antibiotics, especially on the antibacterial activity of silver nanoparticles (AgNPs) has gradually increased. Of particular note are the applications of AgNPs in the biomedical field, such as paper, textile fabrics, wound dressings, food storage containers, catheters, bandages, drinking water sterilization, burn care, household disinfectant sprays, antibacterial coatings, and dental Resin composite material. The increasing application of AgNPs in the biomedical field is due to the fact that silver ions have high antibacterial activity against Escherichia coli, Listeria, Staphylococ...
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Login to View More IPC IPC(8): A01N59/16A01N43/90A01P1/00A01P3/00C07D491/048
CPCA01N43/90A01N59/16C07D491/048
Inventor 杨鹏飞刘联李俊英王月霞
Owner QILU UNIV OF TECH