Nanofiber and preparation method thereof

A nanofiber, nanoscale technology, applied in the direction of fiber chemical characteristics, cellulose/protein conjugated rayon, conjugated rayon, etc., can solve the effect of fiber antibacterial persistence, affect fiber mechanical properties, and large fiber diameter. and other problems, to achieve good antibacterial properties, improve dispersibility, and good mechanical properties.

Inactive Publication Date: 2018-09-07
郑州智锦电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the prior art, the preparation of antibacterial nanofibers requires not only good antibacterial properties, but also good antibacterial persistence. The commonly used method is to spin antibacterial agents and polymers together. However, the commonly used antibacterial The agent is an inorganic material, which is prone to agglomeration and poor dispersion, which affects the mechanical properties of the fiber, and the fiber diameter is large; in addition, the inorganic particles and the polyme

Method used

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  • Nanofiber and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0015] A method for preparing nanofibers, comprising the following steps,

[0016] (1) Coupling agent KH560 and nano-sized titanium dioxide are uniformly mixed at 50°C in the presence of a certain solvent dimethylformamide;

[0017] (2) Chitosan is added in the formic acid solution, stirred and mixed evenly at room temperature, then added silk protein, soybean protein solution, stirred evenly;

[0018] (3) Add polylactic acid to the solution of step (2), mix well, and then mix it with the solution of step (1) at 60°C;

[0019] (4) Pass the obtained solution through a syringe to spray the spinning solution from the spinneret, and collect it on a collecting plate to obtain nanofibers.

[0020] Spinning process parameters: the AC voltage is 10kV, and the distance from the spinneret to the collecting plate is 15cm.

[0021] The parts by mass of each component are: chitosan 50, silk protein 40, soybean protein 27, polylactic acid 20, nanoscale titanium dioxide 15, dimethylformami...

Embodiment 2

[0023] A method for preparing nanofibers, comprising the following steps,

[0024] (1) Coupling agent KH560 and nano-sized titanium dioxide are uniformly mixed at 60°C in the presence of a certain solvent dimethylformamide;

[0025] (2) Chitosan is added in the formic acid solution, stirred and mixed evenly at room temperature, then added silk protein, soybean protein solution, stirred evenly;

[0026] (3) Add polylactic acid to the solution of step (2), mix well, and then mix it with the solution of step (1) at 60°C;

[0027] (4) Pass the obtained solution through a syringe to spray the spinning solution from the spinneret, and collect it on a collecting plate to obtain nanofibers.

[0028] Spinning process parameters: the AC voltage is 15kV, and the distance from the spinneret to the collecting plate is 20cm.

[0029] The parts by mass of each component are: 60 chitosan, 50 silk protein, 39 soybean protein, 40 polylactic acid, 25 nanometer titanium dioxide, 250 dimethylfor...

Embodiment 3

[0031] A method for preparing nanofibers, comprising the following steps,

[0032] (1) Coupling agent KH560 and nano-sized titanium dioxide are uniformly mixed at 65°C in the presence of a certain solvent dimethylformamide;

[0033] (2) Chitosan is added in the formic acid solution, stirred and mixed evenly at room temperature, then added silk protein, soybean protein solution, stirred evenly;

[0034] (3) Add polylactic acid to the solution of step (2), mix well, and then mix it with the solution of step (1) at 65°C;

[0035] (4) Pass the obtained solution through a syringe to spray the spinning solution from the spinneret, and collect it on a collecting plate to obtain nanofibers.

[0036] Spinning process parameters: the AC voltage is 20kV, and the distance from the spinneret to the collecting plate is 25cm.

[0037] The parts by mass of each component are: 55 chitosan, 45 silk protein, 36 soybean protein, 35 polylactic acid, 22 nanometer titanium dioxide, 300 dimethylfor...

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Abstract

The invention relates to nanofiber and a preparation method thereof. An electrospinning technology is adopted, the electrospinning technology is simple, a used power supply uses alternating current, and the diameter of the nanofiber is much smaller than that of fiber obtained through a technology adopting direct-current voltage and can be up to 130 to 320 nm; since a coupling agent is adopted forpretreating nano titania, aggregation between inorganic particles is avoided, and the dispersity of the nanofiber is favorably improved; in addition, a polymer used for spinning contains chitosan, fibroin, soybean protein, on one hand, the coupling agent can be combined with the nano titania, on the other hand, groups on the coupling agent can be combined with functional groups in the chitosan, the fibroin and the soybean protein, so that the antibacterial durability of the nanofiber can be improved. According to the antibacterial nanofiber prepared by the invention, the mechanical performanceis good, and the antibacterial performance is better and can be up to 97 percent or above; after 30 times of washing, better antibacterial performance still can be obtained, and the antibacterial rate can be up to 90 percent or above.

Description

technical field [0001] The invention belongs to the field of nanofiber materials, in particular to an antibacterial nanofiber and a preparation method thereof. Background technique [0002] In the prior art, the preparation of antibacterial nanofibers requires not only good antibacterial properties, but also good antibacterial persistence. The commonly used method is to spin antibacterial agents and polymers together. However, the commonly used antibacterial The agent is an inorganic material, which is prone to agglomeration and poor dispersion, which affects the mechanical properties of the fiber, and the fiber diameter is large; in addition, the inorganic particles and the polymer are mixed together, which affects the antibacterial durability of the fiber to a certain extent; the above two Points will limit the application of fiber materials in extremely fine materials containing germs, and also limit the application of this material in medicine. The electrospinning proce...

Claims

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Application Information

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IPC IPC(8): D01F8/02D01F8/18D01F1/10
CPCD01F1/103D01F8/02D01F8/18
Inventor 张保粮
Owner 郑州智锦电子科技有限公司
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