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A kind of haloamine polymer antibacterial and antiviral nanofiber membrane and preparation method thereof

A technology of nanofiber membranes and polymers, applied in synthetic fibers, conjugated synthetic polymer artificial filaments, fiber treatment, etc., can solve the problems of high reaction temperature, large solvent consumption, complex chlorination, etc., and achieve mild reaction conditions , Enhance adsorption, promote contact effect

Active Publication Date: 2022-05-17
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing patent CN 108863909 A also discloses a method for grafting tetramethylpiperidinol onto polymethyl methacrylate (PMMA) and obtaining a novel haloamine polymer through chlorination, the preparation method exists Disadvantages such as the use of toxic solvents such as xylene, high reaction temperature, large solvent consumption for post-treatment, complex chlorination and low efficiency, etc.

Method used

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  • A kind of haloamine polymer antibacterial and antiviral nanofiber membrane and preparation method thereof
  • A kind of haloamine polymer antibacterial and antiviral nanofiber membrane and preparation method thereof
  • A kind of haloamine polymer antibacterial and antiviral nanofiber membrane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Dissolve 1.00 g polyacrylic acid in 30 mL N,N dimethylacetamide, stir at room temperature for 30 min, then add 0.10 g 1-ethyl-(3-dimethylaminopropyl) carbonyl Diimine hydrochloride and 0.01 g 4-dimethylaminopyridine were activated for 30 min; then 0.50 g tetramethylpiperidinol and 0.3 g N,N dimethylethanolamine were gradually dissolved in 5 mL N,N dimethyl Acetamide, dissolved liquid was added to the activated reaction system, and reacted at 40°C for 24 h. After the reaction, the solid was precipitated with methanol and the product was washed, then the product was dissolved in pure water for dialysis, and finally the dialysate was freeze-dried to obtain the product. Then mix 0.1 g of this product with 1 g of polyurethane in N,N dimethylacetamide solution to form a spinning solution with a total solute mass fraction of 20%, and obtain a nanofiber membrane by electrospinning, soak the nanofiber membrane Chlorination in 0.5wt% neutral sodium hypochlorite solution, then wa...

Embodiment 2

[0032] Dissolve 2.00 g of polyacrylic acid in 60 mL of N,N dimethylacetamide, stir at room temperature for 60 min, then add 0.30 g of dicyclohexylcarbodiimide and 0.03 g of 4-dimethylaminopyridine under ice-cooling conditions Activate for 1 h; then gradually dissolve 1.00 g tetramethylpiperidinol and 0.7 g triethylamine in 7 mL N,N dimethylacetamide, add the dissolved liquid into the activated reaction system, and react at room temperature for 48 h . After the reaction was completed, the solution was obtained by filtration, the solid was precipitated with acetone, and then the solid was dissolved with pure water. This was repeated three times, and finally the product was obtained by vacuum drying. Then 0.1 g of this product and 2 g of polyurethane were mixed in N,N dimethylacetamide solution to form a spinning solution with a total solute mass fraction of 17.5%, and the nanofiber membrane was obtained by electrospinning, and the nanofiber membrane was soaked in Chlorination i...

Embodiment 3

[0034] Dissolve 3.00 g of polyacrylic acid in 80 mL of N,N dimethylformamide, stir at room temperature for 100 min, then add 0.40 g of 1-ethyl-(3-dimethylaminopropyl)carbonyl di imine hydrochloride and 0.04 g 1,8-diazabicycloundec-7-ene were activated for 1.5 h; then 1.5 g tetramethylpiperidinol and 1 g diethylenetriamine were gradually dissolved in 8 mL N,N dimethylacetamide, the dissolved liquid was added to the activated reaction system, and reacted at room temperature for 48 h. After the reaction, the solid was precipitated with ethanol and washed, then the product was dialyzed, and finally the dialysate was freeze-dried to obtain the product. Then 0.1 g of the freeze-dried product was mixed with 2.5 g of polyurethane in N,N dimethylacetamide solution to form a spinning solution with a total solute mass fraction of 10%, and the nanofiber membrane was obtained by electrospinning. Soak in 1.5wt% neutral sodium hypochlorite solution for chlorination, then wash with water to ...

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Abstract

The invention discloses a haloamine polymer antibacterial and antiviral nanofiber membrane and a preparation method thereof. The fiber membrane is obtained by grafting hydrophilic polyacrylic acid polymer with tetraalkyl piperidine alcohol monomer, blending with hydrophobic polyurethane, electrospinning and chlorination to have a certain degree of interpenetration of hydrophilic / phobic polymers. A haloamine polymer antibacterial and antiviral nanofiber membrane with network structure. The nanofiber membrane has fast and efficient bactericidal performance, no disadvantage of small molecule dissolution, good reproducibility, processability, and good hydrophilicity and air permeability, and can be used for epidemic prevention masks, food packaging, and medical dressings , protective clothing and other fields. The reaction conditions for the preparation of haloamine polymers are mild, the solvent is environmentally friendly and safe, and the process of preparing nanofiber membranes is simple. Dissolution antibacterial and antiviral materials and fiber membranes.

Description

technical field [0001] The invention belongs to the technical field of antibacterial polymer materials, and specifically relates to a kind of antibacterial and antiviral nanometer of haloamine polymer with high efficiency, stability, renewability, no dissolution of small molecule antibacterial agents, safety, hydrophilicity and breathability. Fibrous membrane and method for its preparation. Background technique [0002] Haloamines are N-halogen structural compounds with active chlorine storage and release functions, and are highly regarded for their high-efficiency and broad-spectrum bactericidal properties, good chemical stability, unique antibacterial reproducibility, low toxicity and cost. Favored, has been widely used in water treatment, air filtration, textiles, stainless steel, silicon materials, medical and health products and other fields. [0003] At present, haloamine compounds are mainly divided into amine type, amide type, and imide type according to the chemica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4382D04H1/728D01F8/16D01F8/10D06M11/30D06M101/18D06M101/38
CPCD04H1/4382D04H1/728D01F8/16D01F8/10D06M11/30D06M2101/38D06M2101/18Y02A50/30
Inventor 谭淋银学谦施亦东张杰
Owner SICHUAN UNIV
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