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Glutin nano fabric film containing nano silver and preparation and application thereof

A nanofiber film and nanofiber technology, which is applied in fiber treatment, textiles and papermaking, medical science, etc., can solve the problems of easy agglomeration, large diameter of nanosilver particles, and difficulty in uniform dispersion, so as to reduce shedding and agglomeration, The effect of reducing the amount of silver added

Inactive Publication Date: 2008-01-02
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two disadvantages in the nano-silver fiber prepared by this method: one is that the diameter of the nano-silver particles is relatively large, which is 100-500 nanometers; the other is that the nano-silver powder is prone to agglomeration during the mixing process of the polymer solution , it is difficult to disperse evenly

Method used

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  • Glutin nano fabric film containing nano silver and preparation and application thereof
  • Glutin nano fabric film containing nano silver and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Accurately weigh 1.5 grams of medical grade gelatin and dissolve it in 10 milliliters of formic acid concentrated solution. The formic acid concentration is 88%. After sealing, stir magnetically at room temperature. After the gelatin is completely dissolved, add 0.0075 grams of silver nitrate powder. After sealing, continue to magnetically stir at room temperature. Stir until the silver nitrate is completely dissolved to form a bright yellow transparent liquid. After standing still for 15 minutes, transfer the spinning solution to a plastic syringe with a voltage of 22kV and a syringe pump with a speed of 0.4ml / h. Aluminum foil is used for receiving, and the receiving distance is 14cm, spinneret diameter is 0.7mm, electrospun gelatin / silver nanofiber membrane was obtained on aluminum foil, vacuum dried at 40°C for 24h, placed under ultraviolet light for 3h, and gelatin nanofiber membrane containing nanosilver was obtained. The average diameter of the obtained fibers was ...

Embodiment 2

[0024] Accurately weigh 1.5 grams of medical grade gelatin and dissolve it in 10 milliliters of formic acid concentrated solution. The formic acid concentration is 88%. After sealing, stir magnetically at room temperature. After the gelatin is completely dissolved, add 0.0150 grams of silver nitrate powder. After sealing, continue to magnetically stir at room temperature. Stir until the silver nitrate is completely dissolved to form a bright yellow transparent liquid. After standing still for 15 minutes, transfer the spinning solution to a plastic syringe with a voltage of 22kV and a syringe pump with a speed of 0.4ml / h. Aluminum foil is used for receiving, and the receiving distance is 14cm, spinneret diameter is 0.7mm, electrospun gelatin / silver nanofiber membrane was obtained on aluminum foil, vacuum dried at 40°C for 24h, placed under ultraviolet light for 3h, and gelatin nanofiber membrane containing nanosilver was obtained. The average diameter of the obtained fibers was ...

Embodiment 3

[0026] Accurately weigh 1.5 grams of medical grade gelatin and dissolve it in 10 milliliters of formic acid concentrated solution, the concentration of formic acid is 88%. After sealing, stir magnetically at room temperature. After the gelatin is completely dissolved, add 0.0300 grams of silver nitrate powder. After sealing, continue to magnetically stir at room temperature. Stir until the silver nitrate is completely dissolved to form a bright yellow transparent liquid. After standing still for 15 minutes, transfer the spinning solution to a plastic syringe with a voltage of 22kV and a syringe pump with a speed of 0.4ml / h. Aluminum foil is used for receiving, and the receiving distance is 14cm, spinneret diameter is 0.7mm, electrospun gelatin / silver nanofiber membrane was obtained on aluminum foil, vacuum dried at 40°C for 24h, placed under ultraviolet light for 3h, and gelatin nanofiber membrane containing nanosilver was obtained. The average diameter of the obtained fibers w...

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Abstract

The invention relates to a nanometer silver gelatine nanometer fiber film, which comprises the following parts: a gelatine nanometer fiber and a nanometer silver distributed in gelatine nanometer fiber homogeneously, wherein the nanometer silver particle attaches the surface of the gelatine nanometer fiber or in the fiber, the mean diameter of the gelatine nanometer fiber is 60-220nm, and the mean diameter of the nanometer silver is 4-50nm. The electrostatic spinning method comprises the following steps: making the spinning liquid by adding silver nitrate in gelatin-formic acid solution; getting the nanometer fiber film with silver ion by electrostatic spinning; deacidizing the silver ion in the fiber into the nanometer silver particle with ultraviolet irradiation method. The nanometer silver gelatine nanometer fiber film is used to make the artificial skin, the medical dressing, the hemostatic material and the sanitary cotton.

Description

technical field [0001] The invention relates to a nanofiber film, in particular to a gelatin nanofiber film containing nano silver and its preparation method and application. Background technique [0002] At present, the manufacture of nanofibers has become one of the focuses of the world. Nanofibers have smaller diameters and larger specific surface areas, thus making nanofibers versatile. Non-woven fabrics made of nanofibers have the characteristics of high air permeability, coupled with the large surface area of ​​nanofibers, they are often used to make medical dressings to promote wound recovery. The nanofiber membrane has high porosity, which is conducive to the evaporation of wound exudate and avoids the wound area; and oxygen can easily pass through, which is conducive to the respiration of wound tissue cells, the growth and regeneration of epithelial tissue, and accelerates wound healing. In addition, nanofibers can also be used to make high-efficiency filter mater...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L89/00C08K3/08D01D5/00A61L27/60A61L15/32
Inventor 徐雄立周美华
Owner DONGHUA UNIV
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