Silver ion-containing polyvinyl alcohol-based nano composite antibacterial film material and preparation method thereof

A polyvinyl alcohol-based, nanocomposite technology, applied in the field of preparation of polymer composite materials, can solve problems such as shortened lifespan and corruption, and achieve the effect of delaying migration and diffusion

Inactive Publication Date: 2012-03-28
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, microorganisms can also cause decomposition, deterioration and corruption of various industrial materials, cosmetics, pharmaceuticals, etc., thereby shortening the life of the product

Method used

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  • Silver ion-containing polyvinyl alcohol-based nano composite antibacterial film material and preparation method thereof
  • Silver ion-containing polyvinyl alcohol-based nano composite antibacterial film material and preparation method thereof
  • Silver ion-containing polyvinyl alcohol-based nano composite antibacterial film material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of polyvinyl alcohol-based nanocomposite coating material

[0034] Soak 2g of polyvinyl alcohol in water for more than 2 hours to fully absorb water and swell, dissolve the polyvinyl alcohol solution thoroughly at 85°C, add stearic acid dissolved in methanol at the same time, stir magnetically at a constant temperature of 85°C for 5 minutes, and then add nano The material is silicon dioxide, magnetically stirred at a constant temperature of 85°C for 15 minutes, and ultrasonicated at 80W for 5 minutes. The above solution is coated on a smooth glass plate, placed in a fume hood, and the solution is evaporated at room temperature for 48 hours. After peeling off, immerse the film in 1wt% sodium hydroxide for 1 hour to remove the residual solution, rinse repeatedly with distilled water until neutral, and dry naturally to obtain a polyvinyl alcohol-based nanocomposite coating material.

[0035] (2) Preparation of polyvinyl alcohol-based nanocomposite antibacte...

Embodiment 2

[0038] (1) Preparation of polyvinyl alcohol-based nanocomposite coating material

[0039] Soak 4g of polyvinyl alcohol in water for more than 2.5 hours to fully absorb water and swell, dissolve the polyvinyl alcohol solution completely at 88°C, add stearic acid dissolved in ethanol at the same time, stir magnetically at a constant temperature of 88°C for 5 minutes, and then add nanomaterials Silicon dioxide, magnetic stirring at a constant temperature of 88°C for 15 minutes, ultrasonication at 100W for 10 minutes, coating the above solution on a smooth glass plate, placing it in a fume hood, and evaporating the solution at room temperature for 55 hours, until the film is naturally peeled off After falling, the film was soaked in 1.5wt% sodium hydroxide for 1.5 hours to remove the residual solution, rinsed repeatedly with distilled water until neutral, and dried naturally to obtain a polyvinyl alcohol-based nanocomposite coating material.

[0040] (2) Preparation of polyvinyl a...

Embodiment 3

[0043] (1) Preparation of polyvinyl alcohol-based nanocomposite coating material

[0044] Soak 6g of polyvinyl alcohol in water for more than 3 hours to fully absorb water and swell, dissolve the polyvinyl alcohol solution completely at 90°C, add stearic acid dissolved in propanol at the same time, stir magnetically at a constant temperature of 90°C for 5 minutes, and then add nano The material is silicon dioxide, magnetically stirred at a constant temperature of 90°C for 15 minutes, ultrasonicated at 150W for 18 minutes, the above solution is coated on a smooth glass plate, placed in a fume hood, and the solution is evaporated at room temperature for 60 hours. After peeling off, immerse the film in 2wt% sodium hydroxide for 1.8 hours to remove the residual solution, rinse it repeatedly with distilled water until neutral, and dry it naturally to obtain a polyvinyl alcohol-based nanocomposite coating material.

[0045] (2) Preparation of polyvinyl alcohol-based nanocomposite an...

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PUM

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Abstract

The invention relates to a method for preparing a silver ion-containing polyvinyl alcohol-based nano composite antibacterial film material. The method is characterized by comprising the following steps of: soaking 1 to 10 weight parts of polyvinyl alcohol in water for more than 2-4 hours to make the polyvinyl alcohol fully absorb water and swell, thoroughly dissolving a polyvinyl alcohol solution at the temperature of between 85 and 95DEG C, adding stearic acid dissolved by a solvent, magnetically stirring at constant temperature of between 85 and 95DEG C for 5 minutes, adding a nanomaterial silicon dioxide, magnetically stirring at the constant temperature of between 85 and 95DEG C for 15 minutes, and performing ultrasonic treatment; coating the solution on a smooth glass plate, putting into a fume cupboard, evaporating the solution at room temperature for 48 to 72 hours, allowing a film to be naturally peeled, soaking the film in 1 to 3 weight percent sodium hydroxide for 1 to 2 hours, removing the residual solvent, repeatedly washing with distilled water until neutrality, and naturally drying to obtain a polyvinyl alcohol-based nano composite film material; and immersing the film in 30 to 70ml of 0.1 to 0.7 mol/L silver nitrate solution, stirring for 2 to 6 hours, cleaning with deionized water to remove residual silver ions, and drying at room temperature to obtain the silver ion-containing polyvinyl alcohol-based nano composite antibacterial film material.

Description

technical field [0001] The invention belongs to the field of preparation of polymer composite materials, in particular to a preparation method of a polyvinyl alcohol-based nanocomposite coating material, in particular to a polyvinyl alcohol-based nanocomposite antibacterial coating material containing silver ions and a preparation method thereof . Background technique [0002] With the continuous improvement of people's research and understanding of environmental microorganisms, while utilizing the beneficial properties of microorganisms, they are also very vigilant about their harmfulness as pathogenic bacteria. According to reports, 52 million people died in the world in 1995, of which 17 million were caused by bacterial infection, accounting for about 1 / 3. These infectious diseases include cholera, pneumonia, dysentery, tuberculosis, etc. In 1996, the nationwide food poisoning incident caused by pathogenic Escherichia coli O-157 in Japan once caused panic all over the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D129/04C09D7/12C09D5/14C08J7/00C08J5/18
Inventor 任天斌刘昌进李建波
Owner TONGJI UNIV
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