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A preparation method based on polyelectrolyte-surfactant composite antibacterial nanofibers

A surfactant and polyelectrolyte technology, applied in the direction of one-component synthetic polymer rayon, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of less research on polyelectrolyte-surfactant composites, and reduce the Finishing process, mild reaction conditions, good antibacterial effect

Active Publication Date: 2021-11-23
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Researchers have made more in-depth studies on the interaction between the two in aqueous solution, but less research has been done on polyelectrolyte-surfactant complexes with solid-state structures, especially in terms of their functional applications

Method used

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  • A preparation method based on polyelectrolyte-surfactant composite antibacterial nanofibers
  • A preparation method based on polyelectrolyte-surfactant composite antibacterial nanofibers
  • A preparation method based on polyelectrolyte-surfactant composite antibacterial nanofibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of polyelectrolyte polymer:

[0031] Add 10 g of sodium hydroxide to 200 mL of aqueous solution, stir to dissolve, and then heat to 100°C. Add 10g of PAN high polymer powder, condense and stir for 3h. The resulting solution was precipitated, washed, and dried in an oven at 50° C. to obtain a hydrolyzed PAN polymer, that is, a polyelectrolyte polymer.

[0032] (2) Preparation of polyelectrolyte-surfactant complex:

[0033] Dissolve 4g of polyelectrolyte in 100mL of deionized water, 8g of dodecyltrimethylammonium chloride in 200mL of deionized water, and then slowly add the surfactant solvent into the polyelectrolyte solution dropwise until a white precipitate occurs, at 50°C Stirring was continued for 30 minutes, and the reacted solution was filtered, washed, and vacuum-dried at 50° C. to obtain a polyelectrolyte-surfactant antibacterial complex.

[0034] (3) Preparation of polyelectrolyte-surfactant composite antibacterial nanofibers:

[0035] Dissol...

Embodiment 2

[0037] In step (3) of Example 1, "dodecyltrimethylammonium chloride" was changed to "tetradecyltrimethylammonium chloride", and the rest were the same as in Example 1 to obtain a nanofibrous membrane. The prepared submicron fiber membrane (recorded as 14) is used for scanning electron microscope, and its test result is as follows figure 2 As shown in , it can be seen that the fiber diameter is relatively thick and has a network structure.

Embodiment 3

[0039] In step (3) of Example 1, "dodecyltrimethylammonium chloride" was changed to "hexadecyltrimethylammonium chloride", and the rest were the same as in Example 1 to obtain a nanofibrous membrane. The prepared submicron fiber membrane (recorded as 16) is used for scanning electron microscopy, and its test results are as follows: image 3 As shown in , it can be seen that the fiber diameter is relatively thick and has a network structure. Antibacterial effects of electrospun nanofibers against Escherichia coli (E.coli) and Staphylococcus aureus (S.aureus) as Figure 4 As shown, it can be seen that the bacteria on the blank sample and the PAN sample culture dish multiply in large numbers, and there is no antibacterial performance. Sample 16 has good antibacterial performance no matter it is against Escherichia coli or Staphylococcus aureus, the antibacterial rate against Escherichia coli reaches 98%, and the antibacterial rate against Staphylococcus aureus reaches 99%.

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Abstract

The invention relates to a method for preparing antibacterial nanofibers based on polyelectrolyte-surfactant composites. The method includes: hydrolyzing polyacrylonitrile to obtain a polyelectrolyte polymer, then self-assembling with a surfactant quaternary ammonium salt to obtain a polyelectrolyte-surfactant complex, and finally electrospinning to obtain a polyelectrolyte-surfactant Composite antibacterial nanofibers. The preparation route of the method is simple, the reaction conditions are mild, the cost is low, and it is non-toxic; the obtained nanofibers have better antibacterial effect and long-term performance, and at the same time reduce the subsequent finishing process and expand the polyelectrolyte-surfactant complex. application range.

Description

technical field [0001] The invention belongs to the field of preparation of antibacterial nanofibers, in particular to a method for preparing antibacterial nanofibers based on polyelectrolyte-surfactant composites. Background technique [0002] Microorganisms cause great harm to human health and life. These microorganisms multiply rapidly under suitable conditions, spread diseases, and affect the living environment of human beings. Textiles are an important medium for transmitting germs and can provide conditions for microorganisms to reproduce and live. Therefore, it is of great significance to study antibacterial textiles. Antibacterial fiber is a new type of functional material with bactericidal and antibacterial properties, and its core component is antibacterial material. The preparation of antibacterial fibers mainly includes: mixing antibacterial agents into fibers through physical methods, chemically modifying or grafting the polymer structure of chemical fibers, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/54D01F1/10
CPCD01F1/103D01F6/54
Inventor 覃小红仇巧华张婷婷张弘楠俞建勇
Owner DONGHUA UNIV
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