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Preparation method of novel nanofiber membrane

A nanofiber membrane, a new type of technology, applied in fiber treatment, spinning solution preparation, filament/thread forming, etc., can solve problems such as poor antibacterial performance, and achieve the effect of improving performance, improving antibacterial properties, and improving performance

Inactive Publication Date: 2021-03-12
海德发(厦门)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

[0003] Some existing nanofiber membranes not only have relatively poor antibacterial properties, but also have certain defects in anti-oxidation. Therefore, we propose a new preparation method for nanofiber membranes to solve the above problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] S1. Quaternizing the copolymer of acrylamide and 4-vinylpyridine (P(AM-co-4VP)) with dimethyl sulfate to obtain pyridine quaternary ammonium salt cationic acrylamide;

[0021] S2, dissolving pyridinium quaternary ammonium cationic acrylamide in absolute ethanol in a ratio of 2:1, stirring and dissolving, and preparing a spinning solution having a concentration of pyridinium quaternary ammonium cationic acrylamide of 25 g / L;

[0022] S3. Inject the spinning solution into the syringe of the electrospinning machine. The inner diameter of the nozzle of the syringe is 0.7mm, the working voltage of the syringe is 15kV, and the flow rate when injecting the spinning solution is 0.17mL / h;

[0023] S4, using a roller collection method to obtain a nanofiber film with a fiber diameter of 250nm to 300nm;

[0024] S5. Soak the nanofibrous membrane in KMnO with a mass concentration of 1000mg / L and a temperature of 30°C 4 Take it out after 4 hours in the solution, and dry it to obtain...

Embodiment 2

[0026] A preparation method of a novel nanofibrous membrane, comprising the following steps:

[0027] S1. Quaternizing the copolymer of acrylamide and 4-vinylpyridine (P(AM-co-4VP)) with dimethyl sulfate to obtain pyridine quaternary ammonium salt cationic acrylamide;

[0028] S2, dissolving pyridinium quaternary ammonium cationic acrylamide in absolute ethanol in a ratio of 2:1, stirring and dissolving, and preparing a spinning solution having a concentration of pyridinium quaternary ammonium cationic acrylamide of 25 g / L;

[0029] S3. Inject the spinning solution into the syringe of the electrospinning machine. The inner diameter of the nozzle of the syringe is 0.7mm, the working voltage of the syringe is 15kV, and the flow rate when injecting the spinning solution is 0.17mL / h;

[0030] S4, using a roller collection method to obtain a nanofiber film with a fiber diameter of 250nm to 300nm;

[0031] S5. Soak the nanofibrous membrane in KMnO with a mass concentration of 1000m...

Embodiment 3

[0033] A preparation method of a novel nanofibrous membrane, comprising the following steps:

[0034] S1. Quaternizing the copolymer of acrylamide and 4-vinylpyridine (P(AM-co-4VP)) with dimethyl sulfate to obtain pyridine quaternary ammonium salt cationic acrylamide;

[0035] S2, dissolving pyridinium quaternary ammonium cationic acrylamide in absolute ethanol in a ratio of 2:1, stirring and dissolving, and preparing a spinning solution having a concentration of pyridinium quaternary ammonium cationic acrylamide of 25 g / L;

[0036] S3. Inject the spinning solution into the syringe of the electrospinning machine. The inner diameter of the nozzle of the syringe is 0.7mm, the working voltage of the syringe is 15kV, and the flow rate when injecting the spinning solution is 0.17mL / h;

[0037] S4, using the roller collection method to obtain a nanofiber fiber film with a fiber diameter of 250nm to 300nm;

[0038] S5. Soak the nanofibrous membrane in KMnO with a mass concentration ...

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Abstract

The invention relates to the technical field of production and preparation of nanofiber membranes, in particular to a preparation method of a novel nanofiber membrane. The preparation method comprisesthe following steps of S1, carrying out quaternization on a copolymer (P (AM-co-4VP) of acrylamide and 4-vinylpyridine) with dimethyl sulfate to obtain pyridine quaternary ammonium salt type cationicacrylamide; S2, dissolving pyridine quaternary ammonium salt type cationic acrylamide in absolute ethyl alcohol, and stirring for dissolving to prepare a spinning solution; S3, injecting the spinningsolution into an injector of an electrostatic spinning machine; S4, adopting a roller collection method, and obtaining a nanofiber membrane with the fiber diameter ranging from 250 nm to 300 nm; andS5, soaking the nanofiber membrane in a KMnO4 solution for 3-6 hours, then taking out the nanofiber membrane, and airing the nanofiber membrane to obtain the oxidation-resistant nanofiber membrane. According to the preparation method, the antibacterial and antioxidant properties of the nanofiber membrane can be effectively and greatly improved.

Description

technical field [0001] The invention relates to the technical field of production and preparation of nanofiber membranes, in particular to a preparation method of a novel nanofiber membrane. Background technique [0002] Nanofiber refers to a thread-like material with a diameter of nanoscale and a large length with a certain aspect ratio. In addition, fibers that are modified by filling nanoparticles into ordinary fibers are also called nanofibers. In a narrow sense, the diameter of nanofibers is between 1nm and 100nm, but in a broad sense, fibers with a diameter of less than 1000nm are called nanofibers. [0003] Some existing nanofiber membranes not only have relatively poor antibacterial properties, but also have certain defects in anti-oxidation. Therefore, we propose a new preparation method for nanofiber membranes to solve the above problems. Contents of the invention [0004] The purpose of the present invention is to solve the shortcomings in the prior art, and pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D01D5/00D06M11/50D01D1/02
CPCD01D1/02D01D5/003D04H1/728D06M11/50
Inventor 余晓艳
Owner 海德发(厦门)新材料科技有限公司
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