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Alginic acid/nano-silver composite nanofiber and preparation method thereof

A technology of composite nanofibers and silver nanofibers, applied in fiber processing, alginate artificial filaments, filament/wire forming, etc., can solve the problem of uneven distribution of silver nanoparticles, difficulty in obtaining spinning precursors, nano Uneven fiber diameter and other problems, to overcome the limitation of doping amount, superior electrical performance, avoid the effect of nano-silver particle agglomeration

Inactive Publication Date: 2017-11-24
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has many shortcomings
In the direct blending process, the doping amount of silver nanoparticles is seriously restricted by the spinnability; and the nanoparticles are easy to agglomerate, and it is difficult to obtain a uniform spinning precursor solution, resulting in uneven distribution of silver nanoparticles in the material, and the prepared nano The fiber diameter is not uniform, which affects the performance of the material

Method used

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  • Alginic acid/nano-silver composite nanofiber and preparation method thereof
  • Alginic acid/nano-silver composite nanofiber and preparation method thereof
  • Alginic acid/nano-silver composite nanofiber and preparation method thereof

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Embodiment 1

[0030] A method for preparing sodium alginate / nano silver composite nanofibers includes the following steps:

[0031] (1) Electrospun sodium alginate nanofibers: weigh 0.64g of sodium alginate powder at room temperature, add it to the container, then add 0.16g polyethylene oxide (PEO), 0.4g triton, 2g dimethyl Base sulfoxide, 36.8g deionized water, stirred at room temperature for 3h to obtain a spinning precursor solution. The spinning precursor solution was injected into the electrospinning device, and sodium alginate nanofibers were prepared by electrospinning. The spinning voltage was 12kV. The spinning distance is 15cm, and the spinning time is 25min. The sodium alginate nanofibers obtained by electrospinning are placed in an oven and dried in an oven at 50℃ for 2h, and the obtained fiber membrane is cut into 2×2cm 2 The morphological characteristics of the sodium alginate nanofibers obtained in step (1) are as follows: figure 1 As shown, the average diameter of the fiber is 1...

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Abstract

The invention discloses an alginic acid / nano-silver composite nanofiber. The alginic acid / nano-silver composite nanofiber is acquired in the manner of preparing a silver alginate nanofiber after the ion exchange of a sodium alginate nanofiber acquired through an electrostatic spinning process and then reducing silver ions. Nano-silver grains are uniformly distributed on the inner and outer surfaces of the alginic acid / nano-silver composite nanofiber. A method for preparing the material successfully overcomes the limitation of the spinning property to the doping content of nano-silver grains and solves the problem of nano-silver grain conglobation in the electrostatic spinning process. The method can realize the large-scale production of the nano-silver containing composite fiber; the composite nanofiber is high in nano-silver grain content; the nano-silver grains are uniformly distributed on the material surface; and the fiber diameter is small, the specific surface area is large, the performance is excellent, the fiber is easy to be recycled and the cost is effectively saved.

Description

Technical field [0001] The invention belongs to the technical field of nano materials, and specifically relates to an alginic acid / nano silver composite nanofiber and a preparation method thereof. Background technique [0002] Composite materials prepared by combining functional nanoparticles and electrospinning have attracted widespread attention due to their unique magnetic, optical, electrical, and catalytic properties. Among the many functional properties of nanoparticles, gold, silver, and platinum nanoparticles have unique electrical, optical and catalytic properties. Taking nano-silver particles as an example, nano-silver has a strong inhibitory and killing effect on dozens of pathogenic microorganisms such as Escherichia coli, Neisseria gonorrhoeae and Chlamydia trachomatis, and it will not produce drug resistance. The surface effect of nano-silver particles, The quantum size effect, etc., make it also have some special applications, such as surface enhanced Raman applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/04D06M11/83D01D5/00
CPCD01D5/0015D01F9/04D06M11/83D06M16/006
Inventor 龙云泽张斌张俊王晓雄胡伟鹏罗维玲张志广
Owner QINGDAO UNIV
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