A 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 antibacterial materials and nanomaterials, can solve the problems of difficulty in regulating antibacterial activity, uncontrollable activity, and limitation.
Active Publication Date: 2019-08-02
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 kind of method that prepares nano-silver antibacterial material based on Diels-Alder reaction, comprises steps as follows:
[0014] (1) Functionalization of silver nanoparticles
[0015] Adding the silver nanoparticle solution into the ethylene glycol solution, stirring evenly, to obtain a mixture containing nano-silver; then, slowly adding the dimethylformamide solution containing furfuryl mercaptan to the mixture containing nano-silver; Stirring at 100-130° C. for 2-6 hours, cooling to room temperature after the reaction, to obtain a furan-functionalized silver nanoparticle solution;
[0016] (2) Cross-linking of silver nanoparticles
[0017] Dissolve N, N'-(4,4'-methylenediphenyl) dimaleimide in dimethylformamide, stir evenly, add it into the furan-functionalized silver nanoparticle solution, and The mixture is stirred and reacted at different temperatures within the temperature range of 50-130 DEG C for 1-6 hours respectively, after the reacted solution is centr...
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Abstract
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 method for preparing a nano-silver antibacterial material with controllable antibacterial activity, in particular to a method for preparing a nano-silver antibacterial material based on a Diels-Alder reaction, and belongs to the technical field of nanometer materials and antibacterial materials. Background technique [0002] In the past decades, studies on antibiotics, especially on the antibacterial activity of silver nanoparticles (AgNPs) have gradually increased. Of particular note are the applications of AgNPs in biomedical fields such as paper, textile fabrics, wound dressings, food storage containers, catheters, bandages, drinking water sterilization, burn care, household disinfectant sprays, antimicrobial coatings, and dental Resin composites. The application of AgNPs in the field of biomedicine is gradually increasing because: silver ions have high antibacterial activity against Escherichia coli, Listeria, Staphyloco...
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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