Electrical spinning method for making metal nanometer particles in order in high-polymer nanometer fibre
A technology of metal nanoparticles and nanofibers, applied in the direction of melt spinning, fiber treatment, fiber chemical characteristics, etc., to achieve the effects of preventing oxidation, good order of metal particles, and simple preparation process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0046] Example of orderly arrangement of copper nanoparticles in PVA nanofibers by electrospinning method:
[0047] In a round bottom flask, dissolve 0.1 g of sodium bisulfite in 20 g of distilled water and stir with a magnetic stirrer for 24 hours to completely remove the oxygen in the water. Add 0.011mol of dried copper chloride, stir with a magnetic stirrer for one day, then add 2.4g of polyvinyl alcohol (the repeating unit is about 0.055mol) and 0.0001mol of AOT, heat to 90°C under magnetic stirring and keep for 2 After 1 hour to completely dissolve it, stirring was continued for 6 hours. 10 g of distilled water (pH=10) and 0.11 mol of hydrazine hydrate were added to another bottle, and stirred with a magnetic stirrer for 24 hours. Under stirring, the above basic hydrazine hydrate solution was quickly added into the solution containing polyvinyl alcohol, and stirred at room temperature for 2 hours. Then add 6 grams of distilled water and continue to stir for 2 hours. The...
Embodiment 2
[0049] Change the consumption of cupric chloride to be 0.0055mol, all the other experimental conditions and reaction substance consumption are the same as embodiment 1, the diameter of copper particle in the obtained composite nanofiber is 600nm, the diameter of polymer fiber is 200nm, and the distance between copper nanoparticles is 6.5 μm. The distance between the copper nanoparticles in this example is larger than that in Example 1. This is because the particle size of the copper nanoparticles becomes smaller and the force of mutual attraction becomes smaller when polarized, but the amount of PVA does not change. Therefore, the diameter of the fiber remains unchanged, so we can achieve the purpose of changing the distance between the metal particles in the nanofiber by changing the molar number of copper chloride used in the reaction.
Embodiment 3
[0051] The cupric chloride was changed to silver nitrate to be 0.011mol, and the rest of the experimental conditions were the same as in Example 1. The diameter of the silver particles in the obtained composite nanofiber was 800nm, the diameter of the polymer fiber was 200nm, and the distance between the silver nanoparticles was 6.3 μm. The silver nanoparticle spacing in embodiment 3 is bigger than the spacing in embodiment 1, and this is because when polarized, the interaction force that silver nanoparticles attract each other is not as large as the copper nanoparticle interaction example, so the distance is far away, But the amount of PVA does not change, so the fiber diameter does not change.
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More