Organic nano antibacterial agent containing N<+1> as well as preparation method and application of organic nano antibacterial agent

A nano antibacterial agent, organic technology, applied in the field of N+-containing organic nano antibacterial agent and its preparation and application, can solve the problems of easy volatilization, poor heat resistance, poor safety, etc., achieve good compatibility, low cost, and utilization high rate effect

Active Publication Date: 2013-04-17
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic low-molecular-weight antibacterial agents have the advantages of strong bactericidal power, good immediate effect, and rich sources, but there are also some obvious shortcomings: (1) high toxicity and poor safety; (2) consumption with bactericidal reaction, long-lasting effect Poor resistance; (3) easy to make microorganisms resistant; (4) volatile, poor heat resistance
[0007] The antibacterial properties of existing polymer antibacterial agents are not only affected by factors such as the microstructure of the polymer (linear, branched or cross-linked), relative molecular mass and its distribution, charge density, and the morphology of the polymer in solution. It is related to the aggregate structure, it is difficult to prepare in large quantities, and the application is not convenient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A containing N + The organic nano antibacterial agent is prepared by the following method:

[0039] (1) Add 65g water, 0.3g sodium dodecylbenzenesulfonate, 6g glycidyl methacrylate, 12g Methyl methacrylate, 0.2g methylenebisacrylamide, and 1g cyclohexane were stirred and dispersed at a speed of 1000r / min, and oxygen was removed by nitrogen bubbling. After 45 minutes, the temperature was raised to 70°C, then 5 mL of an aqueous solution containing 0.2 g of potassium persulfate was added, and the mixture was maintained at 70°C and a stirring speed of 600 r / min under nitrogen protection, and reacted for 3 hours to obtain a functional nanoparticle emulsion.

[0040] (2) Add 30g of trimethylamine aqueous solution with a mass fraction of 33% into a round-bottomed flask placed in an ice bath, then slowly drop a mixture of 18g of concentrated hydrochloric acid (36% in mass fraction) and 15g of distilled water into the flask under stirring , reacted for 30min at a rotating spee...

Embodiment 2

[0045] A containing N + The organic nano antibacterial agent is prepared by the following method:

[0046] (1) Add 50g of water, 0.2g of sodium lauryl sulfate, 2g of glycidyl methacrylate, and 4g of ethyl acrylate into a 250mL four-necked reaction flask equipped with a stirrer, nitrogen inlet tube, reflux condenser, and thermometer. Esters, 8g of methyl acrylate, 0.15g of ethylene glycol dimethacrylate, and 0.25g of methyl ethyl ketone were stirred and dispersed at a speed of 1200r / min, and oxygen was removed by bubbling with nitrogen. After 30 minutes, the temperature was raised to 75°C, and then 5 mL of an aqueous solution containing 0.2 g of potassium persulfate was added, maintained at 75°C and a stirring speed of 800 r / min under nitrogen protection, and reacted for 2 hours to obtain a functional nanoparticle emulsion.

[0047] (2) Dissolve 10.1g of triethylamine in 10mL of water, then add the solution into a round-bottomed flask placed in an ice bath, then slowly drop th...

Embodiment 3

[0052] A containing N + The organic nano antibacterial agent is prepared by the following method:

[0053] (1) Add 45g of water, 0.25g of sodium lauryl sulfate, 7g of glycidyl methacrylate, and 6g of styrene into a 250mL four-necked reaction flask equipped with a stirrer, nitrogen inlet tube, reflux condenser, and thermometer. , 6g of methyl methacrylate, 0.15g of butanediol dimethacrylate, and 1.2g of n-hexane were stirred and dispersed at a speed of 1100r / min, and oxygen was removed by bubbling with nitrogen. After 45 minutes, the temperature was raised to 80°C, and then 5 mL of an aqueous solution containing 0.25 g of potassium persulfate was added, maintained at 80°C and a stirring speed of 750 r / min under nitrogen protection, and reacted for 2.5 hours to obtain a functional nanoparticle emulsion.

[0054] (2) Add 9.25g of tributylamine into 10mL of water, then add the solution into a round-bottomed flask placed in an ice bath, then slowly drop the mixture of 5.5g of conc...

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Abstract

The invention discloses an organic nano antibacterial agent containing N<+1> as well as a preparation method and application of the organic nano antibacterial agent. The organic nano antibacterial agent containing N<+1> is prepared through the following steps of: preparing an organic nano product containing functional groups by an emulsion polymerization method, and then performing cationization treatment on the organic nano product by using tertiary amine hydrochloride, and finally carrying out dialysis. The organic nano antibacterial agent provided by the invention has huge specific surface area and is high in utilization rate; and with the feature of numerous positive charges, the organic nano antibacterial agent has high static effect on electronegative microorganisms, and is capable of firmly trapping harmful microorganisms and destroying the physiological process of the harmful microorganisms, so that the harmful microorganisms are died, and as a result, high-efficiency broad-spectrum antibacterial effect is realized; and in addition, the antibacterial agent provided by the invention is free of agglomeration, easy to disperse, excellent in compatibility with polymer materials, wide in application range, simple in preparation process and low in cost.

Description

technical field [0001] The present invention relates to a + An organic nano-antibacterial agent and its preparation method and application, the antibacterial agent has efficient inhibitory or killing effects on various bacterial microorganisms. Background technique [0002] Antibacterial agents are widely used in many fields such as modern household appliances, building materials, paper products, toys, stationery, decorative materials, kitchen utensils, and fiber products. Antibacterial materials are characterized by high quality and high added value, and have become an important emerging industry today. [0003] The existing antibacterial agents are roughly divided into metal ions, inorganic nanopowders, organic low-molecular compounds, organic polymers, and organic / inorganic compounds. Each type of antibacterial has its own limitations in application. . [0004] Many metal ions have bactericidal ability, but considering safety and efficiency, silver-based antibacterial ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/44C08F212/08C08F218/08C08F220/32C08F222/38C08F222/14C08F8/44C08F2/26A01N37/44A01P1/00
Inventor 王正辉宣晓雅王青
Owner SOUTH CHINA AGRI UNIV
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