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Nanofiber membrane and preparation method thereof

A nanofiber film and nanofiber technology, applied in fiber treatment, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of reducing antibacterial effect, small nano silver particles, easy aggregation, etc., to increase the bactericidal effect and drug effect time, the effect of avoiding allergic reactions

Active Publication Date: 2019-07-02
TCL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a nanofibrous membrane and its preparation method and application, aiming to solve the problem that the existing nano-silver particles are small and have poor stability, and are easy to aggregate into large particles. The problem of reducing the antibacterial effect

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  • Nanofiber membrane and preparation method thereof
  • Nanofiber membrane and preparation method thereof
  • Nanofiber membrane and preparation method thereof

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Embodiment 1

[0058] The preparation method of the nanofibrous membrane of the present embodiment comprises the following steps:

[0059] (1) Dissolve 0.180 g (1 mmol) of glucose and 0.176 g (1 mmol) of L-ascorbic acid into 20 mL of distilled water and 10 mL of ethanol mixture, stir evenly, transfer to a 50 mL polytetrafluoroethylene reactor, 120 °C for 4 h, then cooled down to room temperature naturally. Take the supernatant by centrifugation to obtain a carbon quantum dot solution;

[0060] (2) Prepare 100 mL of tris buffer solution with a concentration of 10 mM, add dilute hydrochloric acid solution to adjust the pH to 8.5, add 10 mg of dopamine hydrochloride, and stir in air for 1 h to obtain a polydopamine solution with a concentration of 0.1 mg / mL; 10 mL of polydopamine solution was added to the carbon quantum dot solution, ultrasonicated for 10 min, and stirred for 0.5 h to obtain a polydopamine film-coated carbon quantum dot solution;

[0061] (3) Slowly add 10 mL of silver nitrat...

Embodiment 2

[0065] The preparation method of the nanofibrous membrane of the present embodiment comprises the following steps:

[0066] (1) Dissolve 0.900 g (5 mmol) of glucose and 0.880 g (5 mmol) of L-ascorbic acid into a mixture of 20 mL of distilled water and 10 mL of ethanol, stir evenly, transfer to a 50 mL polytetrafluoroethylene reactor, 120 °C for 4 h, then cooled down to room temperature naturally. Take the supernatant by centrifugation to obtain a carbon quantum dot solution;

[0067] (2) Prepare 100 mL of tris buffer solution with a concentration of 10 mM, add dilute hydrochloric acid solution to adjust the pH to 8.5, add 500 mg of dopamine hydrochloride, and stir in air for 2 h to obtain a polydopamine solution with a concentration of 5 mg / mL; take 10 Add mL of polydopamine solution into the carbon quantum dot solution, sonicate for 60 min, and stir for 2 h to obtain a polydopamine film-coated carbon quantum dot solution;

[0068] (3) Slowly add 10 mL of silver nitrate solu...

Embodiment 3

[0072] The preparation method of the nanofibrous membrane of the present embodiment comprises the following steps:

[0073] (1) Dissolve 0.360 g (2 mmol) of glucose and 0.352 g (2 mmol) of L-ascorbic acid into 20 mL of distilled water and 10 mL of ethanol mixture, stir evenly, transfer to a 50 mL polytetrafluoroethylene reactor, 120 °C for 4 h, then cooled down to room temperature naturally. Take the supernatant by centrifugation to obtain a carbon quantum dot solution;

[0074] (2) Prepare 100 mL of tris buffer solution with a concentration of 10 mM, add dilute hydrochloric acid solution to adjust the pH to 8.5, add 100 mg of dopamine hydrochloride, and stir in air for 2 h to obtain a polydopamine solution with a concentration of 1 mg / mL; 10 mL of polydopamine solution was added to the carbon quantum dot solution, ultrasonicated for 30 min, and stirred for 1 h to obtain a polydopamine film-coated carbon quantum dot solution;

[0075] (3) Slowly add 10 mL of silver nitrate s...

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Abstract

The invention discloses a nanofiber membrane and a preparation method thereof. The method comprises the following steps: providing a carbon quantum dot; carrying out surface modification on the carbonquantum dot by using polydopamine, and forming a layer of polydopamine film on the surface of the carbon quantum dot so as to obtain a polydopamine film-coated carbon quantum dot; mixing silver nitrate with the polytetramamine film-coated carbon quantum dot for carrying out a reaction so as to obtain composite nanoparticles; preparing the composite nanoparticles and a polymer into a spinning solution; adopting an electrospinning technique to prepare the nanofiber film. Due to characteristic of more pores of the carbon quantum dot, the sterilizing effect can be improved. Furthermore, the porous structure of the carbon quantum dot has a certain slow-release effect, so that the response time is prolonged. Finally, other bactericidal medicines do not need to be added due to the antibacterialproperty of the nanofiber membrane, so that the possibility of allergic reaction of a human body to the bactericidal medicines can be avoided.

Description

technical field [0001] The invention relates to the technical field of bactericidal materials, in particular to a nanofiber membrane and a preparation method thereof. Background technique [0002] The nanofibrous membrane prepared by electrospinning technology has high porosity, good ductility, and adjustable composition. Firstly, the high porosity can ensure that the material not only has good permeability, but also has a slow-release function, which is beneficial to wound healing; secondly, good ductility ensures that the material is soft and easy to fit, which is beneficial to protect the wound ; Finally, the adjustable composition can be doped with different substances to realize the preparation of multifunctional nanofiber membranes, such as sterilization, anti-itching, anti-aging and other effects. Therefore, the preparation of nanofibrous membranes by electrospinning technology has broad application prospects. [0003] Carbon quantum dots are emerging materials in r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4382D04H1/728D01D5/00D01F6/94D01F1/10
CPCD04H1/728D04H1/4382D01F6/94D01F1/103D01D5/003D01D5/0061D01D5/0092
Inventor 霍蕊
Owner TCL CORPORATION
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