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Preparation method of oil soluble silver nanoparticles

A silver nanoparticle, oil-soluble technology, applied in nanotechnology and other directions, can solve the problems of high production cost and high requirements for equipment and equipment, and achieve the effect of improving strength and toughness, large specific surface area, and avoiding agglomeration effect.

Active Publication Date: 2018-03-30
河南科斗新材料研究院有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The principle of the physical method is simple, and the resulting products have few magazines and good quality, but they have high requirements for equipment and expensive production costs
The chemical method is relatively simple, but it has higher requirements for particle size control

Method used

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Embodiment

[0025] A preparation method of oil-soluble silver nanoparticles, comprising the following steps:

[0026] (1) Synthesis of star macromolecular initiator 21Br-β-CD:

[0027] Take 6.82g of β-cyclodextrin, dry it at 80°C for 12h under vacuum, then dissolve it in 60mL of N-methylpyrrolidone at room temperature, put it in an ice-water bath, and cool it to 0°C. Under this condition, Add 58g of 2-bromoisobutyryl bromide dropwise within 2h. After the dropwise addition, warm up to room temperature and continue to react for 24h to obtain a brown solution. Concentrate by distillation under reduced pressure, add 100mL of dichloromethane to dilute, and wash with 100mL of saturated aqueous sodium bicarbonate solution and 100 mL of deionized water were washed three times each, and the obtained organic phase was dried with anhydrous magnesium sulfate, then concentrated with a rotary evaporator, and finally precipitated in n-hexane below -20°C to obtain a white precipitate, which was dried in ...

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PUM

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Abstract

The invention discloses a preparation method of oil soluble silver nanoparticles. Beta-cyclodextrin is adopted as initial reaction raw materials; a macroinitiator is synthesized by finishing; an ATRPtechnology and an ATRP and linkage chemical (Click Chemistry) combination technology are adopted to prepare a multi-arm star segmented copolymer; a solution phase synthesis method is used as the base;and the multi-arm star segmented copolymer is used as a single-molecule micelle template to prepare the oil soluble silver nanoparticles with uniform sizes and excellent dispersibility. The surfacesof Ag nanoparticles are modified, so that the Ag nanoparticles can be uniformly dispersed in oil solvent to prevent the agglomeration effect. The prepared Ag nanoparticles are stable in quality and uniform in size, can be stabilized in nanoscale, and can effectively guarantee the performance exertion.

Description

technical field [0001] The invention relates to a preparation method of oil-soluble silver nanoparticles, belonging to the technical field of inorganic nanomaterial synthesis. Background technique [0002] Nanomaterials are generally called nanomaterials that have one or more dimensions in the range of 1-100 nm or are composed of them as basic units, which is roughly equivalent to the scale where 10-100 atoms are closely arranged together. Nano-silver is a simple substance of metallic silver with a particle size of nanometer scale. Studies have shown that nano-silver has a strong inhibitory and killing effect on dozens of pathogenic microorganisms such as Escherichia coli, Neisseria gonorrhoeae, and Chlamydia trachomatis, and will not produce drug resistance. Cotton socks made of nano-silver and combed cotton fibers have good antibacterial and deodorizing effects. And because of its good conductivity, it occupies an extremely important position in the field of microelectro...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00C08F293/00C08F220/18C08F212/08
CPCB22F9/24B82Y40/00C08F212/08C08F220/18C08F220/1804C08F293/005
Inventor 裴东杰吴斌刘刚于航
Owner 河南科斗新材料研究院有限公司
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