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Electrospinning preparation method of silk fibroin/polyacrylonitrile-based antibacterial and anti-ultraviolet nanofiber membrane

A nanofiber membrane and electrospinning technology, which is applied in the direction of spinning solution preparation, fiber treatment, rayon manufacturing, etc., can solve the problems of unsustainable antibacterial effect, complicated process, troublesome operation, etc., to achieve good expansion space, antibacterial and antibacterial Bacteria effect is good, the effect of uniform distribution

Active Publication Date: 2015-10-28
浙江枫翎新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antibacterial finishing methods of silk protein textiles mainly use chemical grafting, physical modification, antibacterial agents are directly added to the spinning solution to spin antibacterial fibers, and composite spinning methods; among them, the antibacterial effect of the first two methods is not long-lasting, and the cost is high. Complicated and troublesome to operate

Method used

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  • Electrospinning preparation method of silk fibroin/polyacrylonitrile-based antibacterial and anti-ultraviolet nanofiber membrane
  • Electrospinning preparation method of silk fibroin/polyacrylonitrile-based antibacterial and anti-ultraviolet nanofiber membrane
  • Electrospinning preparation method of silk fibroin/polyacrylonitrile-based antibacterial and anti-ultraviolet nanofiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Weigh SF and PAN powders with an electronic balance (the mass ratio of SF and PAN is 1:10, and the molar mass of PAN is Mw=170000 g / mol, and the mass fraction is 6%) and put them in a 20ml sample bottle, Use a pipette to pipette 15ml of N-N dimethylformamide (DMF), seal the sample bottle with raw tape, heat to 60°C and stir for 24 hours to finally obtain an electrospinning solution with uniform dispersion of SF and PAN.

[0035] (2) adopt figure 1 The electrospinning device shown is for electrospinning, and the aluminum foil paper with an area of ​​40cm×40cm is cut out and attached to the receiving plate. Take 4ml of the spinning solution sample and put it into the injection needle (i.e., the syringe), and put the positive electrode of the high voltage generator Connect to the outlet of the spinneret 4, connect the negative electrode to the receiving plate, adjust the syringe pump to make the flow rate of the electrospinning solution 0.7ml / h, set the distance betwe...

Embodiment 2

[0037] (1) Weigh the SF / PAN / TCC powder with an electronic balance (the mass ratio of the three is 10:10:3), in which the mass fraction of PAN (Mw=170000 g / mol) is 6%, and put it in a 20ml sample bottle , using a pipette to pipette 15ml of N-N dimethylformamide (DMF), the sample bottle is sealed with raw material tape, heated to 60 ° C and stirred for 24 hours, and finally the electrospun electrospun powder with relatively uniform dispersion of SF, PAN, and TCC is obtained. silk solution.

[0038](2) Cut out an aluminum foil paper with an area of ​​40cm×40cm and stick it on the receiving plate, take 4ml of the spinning solution sample and put it into the injection needle, connect the positive pole of the high voltage generator to the outlet of the spinneret, and connect the negative pole to the receiving plate , adjust the syringe pump so that the flow rate of the electrospinning solution is 0.7ml / h, set the distance between the spinneret and the receiving plate to 13cm, and th...

Embodiment 3

[0040] (1) Weigh SF / PAN / TCC powder with an electronic balance (the mass ratio of the three is 1:10:0.3), in which the mass fraction of PAN (Mw=130000 g / mol) is 8%, and put it in a 20ml sample bottle , using a pipette to pipette 15ml of N-N dimethylformamide (DMF), the sample bottle is sealed with raw material tape, heated to 60 ° C and stirred for 24 hours, and finally the electrospun electrospun powder with relatively uniform dispersion of SF, PAN, and TCC is obtained. silk solution.

[0041] (2) Cut out an aluminum foil paper with an area of ​​40cm×40cm and stick it on the receiving plate, take 4ml of the spinning solution sample and put it into the injection needle, connect the positive pole of the high voltage generator to the outlet of the spinneret, and connect the negative pole to the receiving plate , adjust the syringe pump so that the flow rate of the electrospinning solution is 0.7ml / h, set the distance between the spinneret and the receiving plate to 13cm, and the ...

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Abstract

The invention relates to an electrostatic spinning preparation method of a silk fibroin / polyacrylonitrile based antibacterial ultraviolet-resistant nanofiber membrane and belongs to the technical field of functional nanofiber preparation. The electrostatic spinning preparation method of the SF / PAN (silk fibroin / polyacrylonitrile) based antibacterial ultraviolet-resistant nanofiber membrane is characterized by including the steps: (1) mixing PAN, SF and antibacterial agents and then dissolving the mixture into DMF (N-N dimethyl formamide) with stirring so that uniformly dispersed electrostatic spinning solution is obtained, wherein the weight ratio of the SF to PAN is 0.1-1, and the weight of the antibacterial agents accounts for 10-30% of the SF weight; and (2) performing electrostatic spinning for the prepared electrostatic spinning solution so that the SF / PAN based antibacterial ultraviolet-resistant nanofiber membrane is obtained. The preparation method is simple, and the antibacterial agents are uniform in distribution in nanofibers and good in antibacterial and bacteria inhibiting effects. Taking an SF / PAN nanofiber membrane as a reference sample, the SF / PAN / TCC (triclocarban) nanofiber membrane has the bacteria inhibiting rate and the antibacterial rate which are above 90% and above 45% respectively.

Description

technical field [0001] The invention relates to an electrospinning preparation method of a silk fibroin / polyacrylonitrile (SF / PAN)-based antibacterial and anti-ultraviolet nanofiber film, and belongs to the technical field of preparation of functional nanofibers. Background technique [0002] Electrospinning technology is based on the principle of high-speed jetting of conductive fluid under a high-voltage electric field. A potential difference is generated instantaneously between the capillary spinneret and the ground electrode, so that the solution or melt in the capillary overcomes its own surface tension and viscoelastic force. The end of the spinneret presents hemispherical droplets. As the electric field strength increases, the droplet is pulled into a conical shape called Taylor cone. When the electric field strength exceeds a certain critical value, it will overcome the surface tension of the droplet to form a jet, further accelerate in the electric field, reduce th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4382D04H1/728D01D5/00D01D1/02D01F1/10
Inventor 胡毅戴莉艳俞丽娟沈桢
Owner 浙江枫翎新材料科技有限公司
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