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Organic modified silver-loaded montmorillonite/polyaniline nano-composite antibacterial agent

A silver-loaded montmorillonite, nano-composite technology, applied in the field of polymer antibacterial, can solve the problems of poor nano-silver dispersibility, poor polymer compatibility, complex production process, etc. The effect of the application foreground

Pending Publication Date: 2021-11-30
NANJING HONGRUI PLASTIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, common silver-loaded polymer antibacterial materials still have problems such as poor dispersion of nano-silver, poor compatibility with polymers, short antibacterial time, complex production process, and high cost.

Method used

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  • Organic modified silver-loaded montmorillonite/polyaniline nano-composite antibacterial agent
  • Organic modified silver-loaded montmorillonite/polyaniline nano-composite antibacterial agent
  • Organic modified silver-loaded montmorillonite/polyaniline nano-composite antibacterial agent

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A kind of organically modified silver-loaded montmorillonite / polyaniline nanocomposite antibacterial agent, its preparation method comprises the following steps:

[0027] (1) Add 20g of sodium montmorillonite into 2L of deionized water, stir at 60°C for 30min, then slowly add 2g of dodecyltrimethylammonium chloride, continue to stir for 4h, then carry out suction filtration, use deionized The organically modified montmorillonite was obtained by drying and grinding after washing with ion water.

[0028] (2) Weigh 10 g of the organically modified montmorillonite obtained in step (1) and add it into 1 L of deionized water. After stirring for 30 min, add 1 g of silver nitrate (5.88 mmol), ultrasonically disperse for 2 h, and stir for 4 h.

[0029] (3) Add 0.5468g of aniline (5.88mmol), 0.0063g of p-phenylenediamine (0.0588mmol), and 1.765g of acetic acid (29.4mmol) into the dispersion obtained in step (2), and stir at room temperature for 24h.

[0030] (4) Suction filter t...

Embodiment 2

[0034] A kind of organically modified silver-loaded montmorillonite / polyaniline nanocomposite antibacterial agent, its difference with embodiment 1 is that the sodium-based montmorillonite in step (1) becomes calcium-based montmorillonite, 2g dodecane Trimethylammonium chloride was changed to 2.5g dodecylbenzyl ammonium chloride, and the stirring reaction time was changed from 4h to 3h. The organically modified montmorillonite in step (2) is changed from 10g to 8g, the ultrasonic dispersion time is changed from 2h to 1.5h, and the stirring time is changed from 4h to 3h; in step (3), 0.5468g aniline (5.88mmol) becomes 0.2190g aniline (2.35mmol), 0.0063g (0.0588mmol) p-phenylenediamine becomes 0.0032g (0.0294mmol) p-phenylenediamine, 1.765g acetic acid (29.4mmol) becomes 7mL (1M) nitric acid, stirring reaction time is changed by 24h becomes 48h.

Embodiment 3

[0036]A kind of organically modified silver-loaded montmorillonite / polyaniline nano-composite antibacterial agent, its difference from Example 1 is that 2g dodecyltrimethylammonium chloride in step (1) becomes 4g didecane dimethyl ammonium bromide, the stirring reaction time is changed from 4h to 2h; the organically modified montmorillonite in the step (2) is changed from 10g to 6g, and the ultrasonic dispersion time is changed from 2h to 1h, and the stirring time is changed from 4h to 1h 2h; 0.5468g aniline (5.88mmol) in step (3) becomes 0.2190g aniline (2.35mmol), 0.0063g (0.0588mmol) p-phenylenediamine becomes 0.0032g p-phenylenediamine (0.0294mmol), 1.765g Acetic acid (29.4mmol) was changed to 0.5645g acetic acid (9.4mmol), and the stirring reaction time was changed from 24h to 36h.

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Abstract

The invention provides an organic modified silver-loaded montmorillonite / polyaniline nano-composite antibacterial agent. A preparation method of the organic modified silver-loaded montmorillonite / polyaniline nano-composite antibacterial agent comprises the following steps: carrying out intercalation modification on montmorillonite by using an organic modifier to prepare organic modified montmorillonite, then adding silver nitrate, conducting stirring, carrying out ultrasonic dispersion to realize uniform dispersion, adding aniline, p-phenylenediamine and acid, and carrying out stirring and reacting at room temperature to obtain the organic modified silver-loaded montmorillonite / polyaniline nano-composite antibacterial agent. The organic modified silver-loaded montmorillonite / polyaniline nano-composite antibacterial agent is prepared by adopting an in-situ polymerization method, silver nitrate can be successfully reduced into nano-silver by utilizing the synergistic effect of aniline and p-phenylenediamine, organic polyaniline is prepared, and the antibacterial performance of the agent is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of polymer antibacterial, in particular to a polymer antibacterial composite material, in particular to an organically modified silver-loaded montmorillonite / polyaniline nanocomposite antibacterial agent. Background technique [0002] Compared with traditional antibacterial materials, nano antibacterial materials have more extensive and excellent antibacterial and bactericidal effects. Among them, the nano-silver antibacterial polymer material combines the dual advantages of inorganic antibacterial materials and nano-antibacterial materials. It has the advantages of large specific surface area, high surface reactivity, many surface active centers, high catalytic efficiency, and strong adsorption capacity. The antibacterial ability is micron level. More than two hundred times that of silver particles. The application of antibacterial polymer materials such as antibacterial fibers, antibacterial plastics, ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K9/12C08K3/34C08K3/08C08L79/02C08G73/02C08L29/04
CPCC08K9/04C08K9/12C08K3/346C08K3/08C08L79/02C08G73/0266C08L29/04C08K2201/011C08K2003/0806
Inventor 谢国元韩笑王圣武欧正清
Owner NANJING HONGRUI PLASTIC PROD
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