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Temperature-sensitive antibacterial nanofiber and preparation method thereof

A temperature-sensitive antibacterial, nanofiber technology, applied in the direction of fiber type, fiber treatment, animal fiber, etc., can solve the problems of easy leakage of phase change materials, easy rupture of microcapsules, and difficult operation.

Active Publication Date: 2017-05-31
EASTERN LIAONING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage is that the dot-coating method makes the fabric feel soft and has good air permeability, but the microcapsules are easy to break and difficult to handle
It can be seen that the temperature-sensitive smart textiles provided in the prior art generally have the problem of easy leakage of phase change materials.

Method used

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  • Temperature-sensitive antibacterial nanofiber and preparation method thereof
  • Temperature-sensitive antibacterial nanofiber and preparation method thereof
  • Temperature-sensitive antibacterial nanofiber and preparation method thereof

Examples

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preparation example Construction

[0025] The invention provides a method for preparing temperature-sensitive antibacterial nanofibers, comprising the following steps:

[0026] Add N-isopropylacrylamide, chitosan, N,N-methylenebisacrylamide, initiator and N,N,N,N-tetramethylethylenediamine to acetic acid solution for free radical polymerization Reaction, obtain chitosan / poly N-isopropylacrylamide interpenetrating network hydrogel;

[0027] Mixing the chitosan / poly N-isopropylacrylamide interpenetrating network hydrogel and polyethylene oxide aqueous solution to obtain an electrospinning solution;

[0028] The electrospinning solution is subjected to electrospinning to obtain temperature-sensitive antibacterial nanofibers.

[0029] In the present invention, N-isopropylacrylamide, chitosan, N,N-methylenebisacrylamide, initiator and N,N,N,N-tetramethylethylenediamine are added to acetic acid solution for free Based polymerization reaction, chitosan / poly N-isopropylacrylamide interpenetrating network hydrogel was...

Embodiment 1

[0040] (1) Under normal temperature conditions, add 4g of N-isopropylacrylamide into 50mL of acetic acid solution with a mass concentration of 2%, and stir continuously. During the stirring process, add 1g of chitosan, 0.15g of N,N- Methylenebisacrylamide, after stirring for 5 minutes, stop stirring, continue to add 0.1g ammonium persulfate and 1mL N,N,N,N-tetramethylethylenediamine to the mixed solution, stir at room temperature until completely dissolved, and prepare Chitosan / poly-N-isopropylacrylamide interpenetrating network hydrogel.

[0041] (2) Add polyethylene oxide (relative molecular mass 40kDa) into 180mL deionized water, heat at 60°C and stir for 4h to prepare a polyethylene oxide aqueous solution containing polyethylene oxide with a concentration of 10g / mL .

[0042] (3) Mix chitosan / poly N-isopropylacrylamide interpenetrating network hydrogel with polyethylene oxide aqueous solution at a volume ratio of 5 / 1, stir at room temperature until uniform, and prepare ch...

Embodiment 2

[0048] (1) Under normal temperature conditions, add 8g of N-isopropylacrylamide into 150mL of acetic acid solution with a mass concentration of 5%, and stir continuously. During the stirring process, add 6g of chitosan, 0.5g of N,N- Methylenebisacrylamide, after stirring for 10 minutes, stop stirring, continue to add 0.5g potassium persulfate and 3mL N,N,N,N-tetramethylethylenediamine to the mixed solution, stir at room temperature until completely dissolved, and prepare Chitosan / poly-N-isopropylacrylamide interpenetrating network hydrogel.

[0049] (2) Add polyethylene oxide (relative molecular mass 40kDa) into 180mL deionized water, heat at 60°C and stir for 4h to prepare a polyethylene oxide aqueous solution containing polyethylene oxide with a concentration of 10g / mL .

[0050] (3) Mix chitosan / poly-N-isopropylacrylamide interpenetrating network hydrogel with polyethylene oxide aqueous solution at a volume ratio of 3 / 1, stir at room temperature until uniform, and prepare ...

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Abstract

The invention provides temperature-sensitive antibacterial nanofiber. The temperature-sensitive antibacterial nanofiber is prepared by the following steps: adding N-isopropylacrylamide, chitosan, N,N-methylene bisacrylamide, an initiator and N,N,N,N-tetramethylethylenediamine into an acetic acid solution and performing free radical polymerization reaction to obtain chitosan / poly-N-isopropylacrylamide interpenetrating network hydrogel; mixing the chitosan / poly-N-isopropylacrylamide interpenetrating network hydrogen and an aqueous solution of polyethylene oxide to obtain electrostatic spinning liquid; performing electrostatic spinning on the electrostatic spinning liquid to obtain the temperature-sensitive antibacterial nanofiber. The temperature-sensitive antibacterial nanofiber provided by the invention has excellent antibacterial property and heat sensitivity.

Description

technical field [0001] The invention relates to the technical field of functional fibers, in particular to a temperature-sensitive antibacterial nanofiber and a preparation method thereof. Background technique [0002] Temperature-sensitive smart textiles are high-tech textiles that automatically sense changes in the temperature of the external environment and intelligently adjust the temperature. This kind of smart textile has a unique intelligent response to the temperature of the external environment. As the temperature of the external environment increases, it absorbs heat from the environment and stores it inside the textile; as the temperature of the external environment decreases, it releases the heat stored in the textile. , so as to adjust the temperature of the textile to form a local climate with a basically constant temperature. [0003] In the early 1970s, Hajlsen.R.H used CO dissolved in various solvents 2 Such as gas is filled into the hollow part of the fib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/18D01F8/10D01F8/16C08F220/54C08F222/38D06M13/123D06M101/30D06M101/26D06M101/10
CPCC08F220/54D01F8/10D01F8/16D01F8/18D06M13/123D06M2101/10D06M2101/26D06M2101/30C08F222/385
Inventor 路艳华李佳程德红王勃翔
Owner EASTERN LIAONING UNIV
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