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A kind of composite nanofiber and preparation method thereof

A composite nanofiber and solution technology, applied in the field of nanomaterials, can solve the problems of high preparation and storage costs, complicated storage process, poor dispersion, etc., and achieve the effect of simple preparation process, low preparation cost and uniform size

Active Publication Date: 2020-06-30
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation and storage process of existing nano-silver is complicated, and the cost of preparation and storage is high, and the addition of nano-silver to the spinning solution is likely to cause the aggregation of nano-silver, which interferes with the spinning process, resulting in the preparation of composite nano-silver. The particles of nano-silver in the fiber are uneven, the dispersion is poor, and the quality of the composite nanofiber is low

Method used

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  • A kind of composite nanofiber and preparation method thereof
  • A kind of composite nanofiber and preparation method thereof
  • A kind of composite nanofiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] figure 1 It is a method flowchart of a method for preparing a composite nanofiber shown according to an exemplary embodiment, such as figure 1 As shown, the method includes:

[0025] Step 101, pour the dimethylformamide solution into the solution storage device, and then add a preset quality of AgNO to the dimethylformamide solution 3 or CH 3 COOAg, to be AgNO in the dimethylformamide solution 3 or CH 3 COOAg is completely dissolved to obtain a silver ion solution, then add polysuccinimide of a preset quality to the silver ion solution, and stir the polysuccinimide in the silver ion solution until completely dissolved at room temperature , standing for defoaming to obtain polysuccinimide-silver ion spinning solution.

[0026] Polysuccinimide is an intermediate of polyaspartic acid, and the molecular weight of polysuccinimide is 31500.

[0027] It should be noted that the solution storage device may be a beaker or a flask.

[0028] Step 102, applying high-voltage ...

Embodiment 2

[0039] (1) Pour dimethylformamide solution into the solution storage device, and then add CH to the dimethylformamide solution 3 COOAg, to be CH in the dimethylformamide solution 3 COOAg is completely dissolved to obtain a silver ion solution, and then polysuccinimide is added to the silver ion solution, and the polysuccinimide in the silver ion solution is stirred at normal temperature until it is completely dissolved, and then left standing to remove Bubble obtains polysuccinimide-silver ion spinning solution, in polysuccinimide-silver ion spinning solution, the mass percentage concentration of described polysuccinimide is 30%, CH 3 The content of COOAg is 1% of the mass of polysuccinimide.

[0040] Polysuccinimide is an intermediate of polyaspartic acid, and the molecular weight of polysuccinimide is 31500.

[0041] It should be noted that the solution storage device may be a beaker or a flask.

[0042] (2) Apply high-voltage static electricity to the polysuccinimide-sil...

Embodiment 3

[0048] (1) Pour the dimethylformamide solution into the solution storage device, and then add AgNO to the dimethylformamide solution 3 , to be the AgNO in the dimethylformamide solution 3 After completely dissolving, silver ion solution is obtained, then polysuccinimide is added to the silver ion solution, and the polysuccinimide in the silver ion solution is stirred at normal temperature until completely dissolved, then left standing for defoaming Obtain polysuccinimide-silver ion spinning solution, in polysuccinimide-silver ion spinning solution, the mass percentage concentration of described polysuccinimide is 34%, AgNO 3 The content is 20% of the mass of polysuccinimide.

[0049] Polysuccinimide is an intermediate of polyaspartic acid, and the molecular weight of polysuccinimide is 31500.

[0050] It should be noted that the solution storage device may be a beaker or a flask.

[0051] (2) Apply high-voltage static electricity to the polysuccinimide-silver ion spinning s...

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Abstract

The invention relates to the technical field of nanomaterials and discloses a composite nanofiber and a preparation method thereof. By addition of silver ions instead of nanosilver in a spinning solution preparation process, agglomeration of nanosilver in a spinning process can be avoided, and accordingly silver ions can be uniformly distributed in the composite nanofiber. By taking the advantageof super absorbency of polyaspartic acid hydrogel nanofibers, the silver ions are added into spinning solution, then a reducing agent in a silver ion reducing agent water solution is enabled to enterthe fiber to reduce the silver ions into nanosilver, and accordingly in-situ preparation of nanosilver in the polyaspartic acid hydrogel nanofibers is realized. A preparation process is free of earlypreparation of nanosilver, preparation procedures are simple, preparation cost is low, and nanosilver particles in the prepared composite nanofiber is uniform in size and high in dispersity, and the composite nanofiber is high in quality.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a composite nanofiber and a preparation method thereof. Background technique [0002] The health care function of silver has been recognized and applied as early as ancient times. In the ancient Roman Empire, people used silver's bactericidal mechanism to prevent water and milk from deteriorating. The bactericidal mechanism of silver is different from chemically synthesized antibacterial agents. It is mainly based on the denaturation effect of heavy metal ions on bacterial proteins, so it has a broad-spectrum bactericidal effect. Although traditional silver has a certain bactericidal ability, the bactericidal activity is not high. The rise of nano science and technology has brought about a qualitative leap in the bactericidal ability of silver in the nano state. Clinical application shows that nano-silver has antibacterial or bactericidal effects on more than 40 kinds of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/94D01F1/10
CPCD01F1/103D01F6/94
Inventor 张彩丹俞巧珍
Owner JIAXING UNIV
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