In-situ synthesis method of nano-silver alginate short fibers

An alginate, in-situ synthesis technology, applied in fiber processing, plant fibers, flame-retardant fibers, etc., can solve the problem of unsatisfactory distribution uniformity of nano-silver particles, difficulty in controlling the spinnability index of spinning solution, and nano-particles. Silver particles are prone to agglomeration and other problems, achieving the effects of easy control and industrial production, excellent antibacterial properties, and easy control to achieve.

Inactive Publication Date: 2016-10-26
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] It is not difficult to see that the processes of the above two dope spinning methods are relatively complicated. In particular, during the production process, it is difficult to control the spinnability index of the spinning solution.
The reason is that in the spinning solution system, nano-silver particles are very prone to agglomeration, which will cause blockage of the spinneret hole in the subsequent spinning process and affect continuous production; in addition, because the particle size of nano-silver particles cannot be effectively controlled within a In a relatively narrow range, in the spun fiber products, the distribution uniformity of nano-silver particles is not ideal, and the product quality is unstable

Method used

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  • In-situ synthesis method of nano-silver alginate short fibers
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  • In-situ synthesis method of nano-silver alginate short fibers

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Experimental program
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Effect test

Embodiment 1

[0040] The preparation method comprises the following steps:

[0041] The first step, preparation molar concentration is respectively the soluble silver salt bath liquid of 10mmol / l, the reducing agent bath liquid that molar concentration is 10mmol / l, for subsequent use;

[0042] Under the condition of avoiding light and room temperature, the alginate short fiber is immersed in the soluble silver salt bath solution by padding method, so that the soluble silver salt and the alginate short fiber are complexed. After two dipping and two rolling, the obtained Fiber A;

[0043] Wherein, the bath ratio of the alginate short fiber and the soluble silver salt bath liquid is 1:25, the time of each dipping is 15min, and the excess rate of each squeeze is 100%;

[0044] In the second step, the fiber A is immersed in the reducing agent bath and reacted at 80°C for 30 minutes to make the Ag complexed on the short alginate fiber + In situ reduction to nano silver particles, fiber B is obt...

Embodiment 2

[0051] The preparation method comprises the following steps:

[0052] The first step, preparation molar concentration is respectively the soluble silver salt bath liquid of 20mmol / l, the reducing agent bath liquid that molar concentration is 20mmol / l, for subsequent use;

[0053] Under the condition of avoiding light and room temperature, the alginate short fiber is immersed in the soluble silver salt bath solution by padding method, so that the soluble silver salt and the alginate short fiber are complexed. After two dipping and two rolling, the obtained Fiber A;

[0054]Wherein, the bath ratio of alginate short fiber and soluble silver salt bath liquid is 1:50, the time of each dipping is 20min, and the scraping ratio of each squeeze water is 100%;

[0055] In the second step, the fiber A is immersed in the reducing agent bath and reacted at 60°C for 60 minutes to make the Ag complexed on the short alginate fiber + In situ reduction to nano silver particles, fiber B is obt...

Embodiment 3

[0062] The preparation method comprises the following steps:

[0063] The first step, preparation molar concentration is respectively the soluble silver salt bath liquid of 30mmol / l, the reducing agent bath liquid that molar concentration is 30mmol / l, for subsequent use;

[0064] Under the condition of avoiding light and room temperature, the alginate short fiber is immersed in the soluble silver salt bath solution by padding method, so that the soluble silver salt and the alginate short fiber are complexed. After two dipping and two rolling, the obtained Fiber A;

[0065] Wherein, the bath ratio of alginate short fiber and soluble silver salt bath liquid is 1:50, and the time of each dipping is 20min, and the excess rate of water squeezing every time is 100%;

[0066] In the second step, the fiber A is immersed in the reducing agent bath and reacted at 60°C for 60 minutes to make the Ag complexed on the short alginate fiber + In situ reduction to nano silver particles, fibe...

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Abstract

The invention discloses an in-situ synthesis method of nano-silver alginate short fibers. The method comprises the following steps of performing complexation on soluble silver salt and alginate short fibers by means of performing double-dip-double-nip treatment according to a padding method under a dark condition at a room temperature; then immersing into a reducing agent bath solution, reacting for 15 to 60 min at a temperature of 30 to 80 DEG C, and reducing Ag<+> complexed on the alginate short fibers into silver nanoparticles in an in-situ manner; later, washing by utilization of distilled water, and naturally airing to obtain the nano-silver alginate short fibers, wherein a reducing agent is one or more of glucose, sodium ascorbate or citric acid, and the soluble silver salt is a silver nitrate or silver-ammonia solution. The method disclosed by the invention has the advantages that the effects of simple technology, and easiness in control and industrialized production are achieved; for the prepared nano-silver alginate short fibers, the silver nanoparticles are distributed on the surface of the fibers and inside the fibers, the particle diameter is 5 to 30 nm, the antibacterial property is excellent, the durability is good, and the fibers can be applied to the fields of medical health, fire protection, military, spaceflight, healthcare textile and the like.

Description

technical field [0001] The invention relates to a preparation method for in-situ synthesis of short nano-silver alginate fibers, and belongs to the technical field of production of regenerated seaweed functional fibers. Background technique [0002] Nano-silver has significant surface effect, volume effect, quantum size effect and quantum tunneling effect, which greatly increases the probability of contact between nano-silver and the surface of microorganisms, and its antibacterial effect is dozens or even hundreds of times higher than that of macroscopic silver. [0003] In the prior art, the application of nano-silver in fibers to develop antibacterial fibers mainly includes the dope spinning method and the post-finishing method. Among them, the post-finishing method includes treating nano-silver particles on the fibers by dipping, padding, coating or spraying, so as to obtain antibacterial fibers. For example: [0004] M.H.El-Rafie, S.Ravindra, etc. treated cotton fiber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/83D06M101/04
CPCD06M11/83D06M16/00D06M2101/04D06M2200/30
Inventor 赵昔慧李群李晓雯夏延致朱善富
Owner QINGDAO UNIV
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