Method for preparing composite nanofibers, prepared composite nanofibers, filtering layer body, and mask with the filtering layer body

A technology of composite nanofiber and filter layer, which is applied in the direction of fiber treatment, synthetic resin layered products, layered products, etc., can solve the problems of air pollutant filtering ability to be improved and high price, and achieve a strong barrier against dust particles and Bacteria, save manufacturing cost, easy to pass effect

Inactive Publication Date: 2016-08-03
粘誉薰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electrostatic treatment or activated carbon is not only expensive but also needs to be improved to filter various air pollutants

Method used

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  • Method for preparing composite nanofibers, prepared composite nanofibers, filtering layer body, and mask with the filtering layer body
  • Method for preparing composite nanofibers, prepared composite nanofibers, filtering layer body, and mask with the filtering layer body
  • Method for preparing composite nanofibers, prepared composite nanofibers, filtering layer body, and mask with the filtering layer body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] [Preparation of electrospinning solution]

[0031] 0.5g carboxymethyl-β-cyclodextrin (CM-β-CD, synthesized according to the method disclosed by ZhanhuaHuang et al. in Carbohydrate Polymers, 2012, 88, 609-617), 0.5g chitosan, 2.0g polymethyl Methyl acrylate (PMMA, purchased from CHONEYEPURE CHEMICAL, with a weight average molecular weight of 120,000) and 25 mL of formic acid were mixed, stirred with a magnet for 1 day until uniformly dissolved, and electrospinning solution S1 was obtained.

[0032] [Electrospinning]

[0033] The above-mentioned electrospinning solution S1 was contained in a glass injection syringe, and the syringe was connected to a stainless steel needle through a polytetrafluoroethylene (PTFE) tube, and installed on a micropump. A high voltage is provided at the stainless steel needle, so that the electrospinning solution S1 is electrospun, and the formed spinning product E1 is collected with a polypropylene melt-blown non-woven fabric, so that the sp...

Embodiment 2-7

[0035] The preparation method of the electrospinning solutions S2-S7 of Examples 2-7 is similar to Example 1, except that the amount of polymethyl methacrylate (PMMA) is changed to 2.5g, 3g, 3.5g, 4g, 4.5g g, 5g. The spinning products E2-E7 were respectively obtained after performing the above-mentioned electrospinning.

[0036] [Scanning electron microscope (SEM) observation]

[0037] Utilize scanning electron microscope to observe the filtering layer 22 that embodiment 4 obtains, the result is as follows figure 2 As shown, the spinning product E4 is shown to be nanoscale fibers.

[0038] Statistical analysis and calculation with ImageJ software figure 2 The diameter of the nanofibers (sampled 20 times), the result shows that the average diameter of the spinning product E4 is 200nm.

[0039] [Porosity test]

[0040] The test samples were prepared by the aforementioned electrospinning method. Wherein, the base layer 21 is replaced by a grounded barbed wire, and the for...

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Abstract

A method for preparing composite nanofibers includes the following steps: providing an electrospinning solution which includes polymethyl methacrylate or its derivatives, chitosan, oligomer adsorbent and a solvent, and the solvent including formic acid; and forming a plurality of nanofibers by performing electrospinning on the electrospinning solution. The invention also provides the nnaofibers with the diameter less than 250nm prepared by the method. The nanofibers prepared by the invention method have thinner diameter, and a mask with a good air filtration effect can be prepared without additionally applying electrostatic treatment to a basic layer or adding active carbon, and the preparation cost is saved.

Description

technical field [0001] The invention relates to a preparation method of composite nanofibers, in particular to a preparation method using an electrospinning solution including a formic acid solvent, and the prepared composite nanofibers, a filter layer body and a mask with the filter layer body. Background technique [0002] With the rapid development of science and technology and dense population, the pollution of air and other environments is becoming more and more serious. In addition to toxic chemicals, common air pollutants also include dust particles (such as PM 2.5 and PM 10 ) and pathogens such as bacteria (such as Staphylococcus aureus, Cryptococcus, mold and virus). [0003] Generally, masks or air filters with filter layers are often used to block and absorb air pollutants. Generally, the surface of the non-woven fabric is electrostatically treated or activated carbon adsorbent is added to achieve the effect of filtering air. However, electrostatic treatment or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01D1/02B32B27/02B32B27/36B32B27/18B32B3/24B32B5/18A41D13/11
CPCA41D13/1192B32B3/266B32B5/18B32B27/18B32B27/36B32B2262/0276D01D1/02D01D5/0015
Inventor 粘誉薰邱仪郡
Owner 粘誉薰
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