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Method for preparing wound dressing by wet spinning of montmorillonite intercalated polyacrylonitrile

A technique for polyacrylonitrile and wound dressings, which is applied in the preparation of wound dressings by wet spinning of montmorillonite-intercalated polyacrylonitrile, and in the field of organically modified montmorillonite-intercalated polyacrylonitrile fibers to absorb photosensitive dyes, and can solve the problem of inability to strengthen Bone hardness, slow healing of bone fractures, etc., to ensure antibacterial effect and recyclability, short preparation process, and improve the effect of easy decolorization

Inactive Publication Date: 2021-03-16
JIANGSU SUNSHINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing wound dressing by wet spinning of polyacrylonitrile intercalated with montmorillonite, which solves the problem that the bone fractures heal slowly after taking traditional bone soup, and the hardness of the bone cannot be strengthened.

Method used

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  • Method for preparing wound dressing by wet spinning of montmorillonite intercalated polyacrylonitrile

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] Add 17 ml of azamide to a 25 ml blue cap bottle. Then 3 g of polyacrylonitrile powder and 5% organically modified montmorillonite were added, ultrasonically pulverized and stirred on a magnetic stirrer for 12 h to prepare spinning stock solution. Then, it was extruded through a spinneret to form nascent fibers, and after passing through a coagulation bath of nitrogen dimethylformamide with a mass fraction of 30% at 30 °C, polyacrylonitrile fibers were produced.

[0026] Then the nascent polyacrylonitrile fibers are washed three times and then stretched to obtain polyacrylonitrile fibers.

[0027] The polyacrylonitrile fiber winding speed was 30 m / min.

[0028] The polyacrylonitrile fiber was soaked in the cationic photosensitizing dye methylene blue solution with a concentration of 80 mg / L for 48 h, and the wound dressing yarn with antibacterial function was prepared. Finally, wound dressings were prepared by weaving wound dressing yarns on a small prototype machine. ...

example 2

[0030] Add 17 ml of azamide to a 25 ml blue cap bottle. Then 3 g of polyacrylonitrile powder and 5% organically modified montmorillonite were added, ultrasonically pulverized and stirred on a magnetic stirrer for 12 h to prepare spinning stock solution. Then, it is extruded through a spinneret to generate primary fibers, and after passing through a nitrogen-dimethylformamide coagulation bath at 30 °C and a mass fraction of 30%, polyacrylonitrile fibers are generated.

[0031] Then the nascent polyacrylonitrile fibers are washed three times and then stretched to obtain polyacrylonitrile fibers.

[0032] The polyacrylonitrile fiber winding speed is 40 m / min.

[0033] The polyacrylonitrile fiber was soaked in the cationic photosensitizing dye methylene blue solution with a concentration of 80 mg / L for 48 h, and the wound dressing yarn with antibacterial function was prepared. Finally, wound dressings were prepared by weaving wound dressing yarns on a small prototype machine.

example 3

[0035] Add 17 ml of azamide to a 25 ml blue cap bottle. Then 3 g of polyacrylonitrile powder and 5% organically modified montmorillonite were added, ultrasonically pulverized and stirred on a magnetic stirrer for 12 h to prepare spinning stock solution. Then, it is extruded through a spinneret to generate primary fibers, and after passing through a nitrogen-dimethylformamide coagulation bath at 30 °C and a mass fraction of 30%, polyacrylonitrile fibers are generated.

[0036] Then the nascent polyacrylonitrile fibers are washed three times and then stretched to obtain polyacrylonitrile fibers.

[0037] The winding speed of polyacrylonitrile fiber was 50 m / min.

[0038] The polyacrylonitrile fiber was soaked in the cationic photosensitizing dye methylene blue solution with a concentration of 80 mg / L for 48 h, and the wound dressing yarn with antibacterial function was prepared. Finally, wound dressings were prepared by weaving wound dressing yarns on a small prototype machine...

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Abstract

The invention discloses a method for preparing a wound dressing by wet spinning of montmorillonite intercalated polyacrylonitrile, and belongs to the technical field of textile manufacturing. The method comprises the following steps that dry acrylic fibers are dispersed in a solvent,organically modified montmorillonite is intercalated with polyacrylonitrile to prepare a spinning solution, polyacrylonitrile nascent fibers are generated by a spinneret plate, coagulating bath is conducted on the nascent fibers to generate fibers, the polyacrylonitrile fibers adsorb photosensitive dyes to preparepolyacrylonitrile yarns with a photosensitive antibacterial effect, and finally weaving is conducted to prepare the photosensitive antibacterial wound dressing. The method has the characteristics that(1) the acrylic fibers are directly used for preparing the wound dressing; (2) the polyacrylonitrile fibers are prepared by the organically modified montmorillonite intercalated polyacrylonitrile through a wet method; (3) the coagulating bath is a mixed solution of water and an organic solvent; and (4) the photosensitive dye is adsorbed by using the polyacrylonitrile fibers to prepare the wound dressing. The method is simple to operate, experimental equipment is easy to operate and non-corrosive, coagulating bath liquid is easy to recycle and low in toxicity, and the prepared wound dressing is good in antibacterial effect and high in repeatability.

Description

technical field [0001] The invention relates to a method for preparing a wound dressing by wet spinning of montmorillonite intercalated polyacrylonitrile, in particular to organically modified montmorillonite intercalated polyacrylonitrile fibers prepared by a wet method for absorbing photosensitizing dyes and being used for wound dressings. Background technique [0002] The product of polyacrylonitrile fiber is acrylic fiber, which feels rich and soft, and has good elasticity. It is called "artificial wool" because of the similar properties of wool. , tents, curtain box filter cloth, etc., the total production of polyacrylonitrile fibers in synthetic fibers is very large, but the boiling point of polyacrylonitrile is lower than the melting point, so the melting method cannot be used to produce polypropylene fibers. The wet and dry methods are At present, there are two main production methods. The advantage of dry spinning is that the process and equipment are relatively sim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/54D01F1/10D06P1/00D06P3/70D01D5/06A61L15/24A61L15/18A61L15/42A61L15/46A61L15/44
CPCD01F6/54D01F1/10D06P1/004D06P3/70D01D5/06A61L15/24A61L15/18A61L15/42A61L15/46A61L15/44A61L2300/442A61L2300/404
Inventor 王清清陶雅芸丁巧英许文菊查神爱
Owner JIANGSU SUNSHINE
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