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Slow-release antibacterial polyacrylonitrile fibers and preparing method and application thereof

A polyacrylonitrile fiber, slow-release technology, applied in the direction of nanotechnology, to achieve the effect of expanding the use, improving the slow-release ability, and improving the moisture absorption rate

Inactive Publication Date: 2019-05-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the published acrylic fiber-related patent reports focus on the functionalization of acrylic fibers, such as flame retardancy (Chinese patent application number 2015101883251), anti-pilling property (Chinese patent application number 2012103590942), antibacterial properties (Chinese patent application number 2016104843744 ), UV resistance (Chinese Patent Application No. 2015104585036) and electrical conductivity (Chinese Patent Application No. 2008100742254); however, there is currently no research on the direct blending of modified nanocellulose-loaded silver nanoparticles to prepare slow-release antibacterial acrylic fibers to report

Method used

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  • Slow-release antibacterial polyacrylonitrile fibers and preparing method and application thereof
  • Slow-release antibacterial polyacrylonitrile fibers and preparing method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A slow-release antibacterial polyacrylonitrile fiber, the preparation method of which is as follows:

[0038] (1) Take bamboo fiber as raw material, and obtain nanocellulose after being processed several times with an ultrafine particle pulverizer. The treatment conditions of ultrafine disc grinding are as follows: the slurry concentration is 0.1%, the disc grinding gap is -100 μm, and the treatment times are 10 times.

[0039] (2) Oxidizing the C2 and C3 positions of the glucopyranose structural unit in the nanocellulose prepared in the step (1) with sodium periodate to generate cellulose with a 2,3-dialdehyde structure. The sodium periodate oxidation condition is as follows: add 5 g of sodium periodate to each gram of nanocellulose, react at 80° C. in the dark for 1 hour, and stir at a speed of 500 r / min.

[0040] (3) reacting the aldehyde-based cellulose and the silver ammonia solution in the step (2) under a heating environment for a period of time to generate nano...

Embodiment 2

[0044] A slow-release antibacterial polyacrylonitrile fiber, the preparation method of which is as follows:

[0045] (1) Take eucalyptus fiber as raw material, and obtain nanocellulose after being processed several times with an ultrafine pulverizer. The treatment conditions of ultrafine disc grinding are as follows: the slurry concentration is 20%, the disc grinding gap is 200 μm, and the treatment times are 100 times.

[0046] (2) Oxidizing the C2 and C3 positions of the glucopyranose structural unit in the nanocellulose prepared in the step (1) with sodium periodate to generate cellulose with a 2,3-dialdehyde structure. The sodium periodate oxidation condition is: adding 1 g of sodium periodate to each gram of nanocellulose, reacting at 80° C. in the dark for 3 hours, and stirring at a speed of 500 r / min.

[0047] (3) reacting the aldehyde-based cellulose and the silver ammonia solution in the step (2) under a heating environment for a period of time to generate nano-silve...

Embodiment 3

[0051] A slow-release antibacterial polyacrylonitrile fiber, the preparation method of which is as follows:

[0052] (1) Using rice straw fiber as a raw material to obtain nanocellulose after being processed several times with an ultrafine pulverizer. The treatment conditions of ultrafine disc grinding are as follows: the slurry concentration is 10%, the disc grinding gap is -100 μm, and the number of treatments is 50 times.

[0053] (2) Oxidizing the C2 and C3 positions of the glucopyranose structural unit in the nanocellulose prepared in the step (1) with sodium periodate to generate cellulose with a 2,3-dialdehyde structure. The sodium periodate oxidation condition is as follows: add 2.5 g of sodium periodate per gram of nanocellulose, react at 60° C. in the dark for 2 hours, and stir at a speed of 500 r / min.

[0054] (3) reacting the aldehyde-based cellulose and the silver ammonia solution in the step (2) under a heating environment for a period of time to generate nano-s...

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Abstract

The invention discloses a slow-release antibacterial polyacrylonitrile fibers and a preparing method and application thereof. The preparing method comprises the steps of adopting plant cellulose as araw material, and adopting an ultra-fine grain smashing machine to process the plant cellulose multiple times to prepare nano cellulose; oxidizing C2 and C3 positions in a pyranoid glucose structuralunit of the cellulose with periodate to produce an aldehyde group; making aldocellucose and a Tollens' reagent react in a heating environment to produce nano cellulose with loaded nano silver particles; doping the nano cellulose loaded with the nano silver particles into a polyacrylonitrile spinning raw solution, conducting wet spinning, drafting, washing and drying, and obtaining the slow-releaseantibacterial polyacrylonitrile fibers. The slow-release antibacterial polyacrylonitrile fibers have a good antibacterial effect, the stretching strength is also greatly improved, the dyeing performance and moisture absorption are both improved, and thus the slow-release antibacterial polyacrylonitrile fibers can be applied to the field of textile products and functional spinning materials such as antibacterial materials, flat polyacrylonitrile fibers, high-modulus polyacrylonitrile fibers and rub-resistant acrylic fibers.

Description

technical field [0001] The invention belongs to the field of antibacterial textiles, in particular to a slow-release antibacterial polyacrylonitrile fiber and its preparation method and application. Background technique [0002] Acrylic fiber is known as artificial wool. It has the advantages of softness, bulkiness, easy dyeing, bright color, light resistance, antibacterial, and no fear of insects. Acrylic fibers are mainly used for civil purposes, and can be purely spun or blended to make a variety of wool, wool, blankets, sportswear, artificial fur, plush, bulked yarn, water hose, parasol cloth, etc. Its textiles are widely used In clothing, decoration, industry and other fields. Acrylic fibers are unique in the orderly arrangement of internal macromolecules, showing an irregular helical conformation, and there is no strict crystallization region. Pure polyacrylonitrile fibers have poor hygroscopicity and are difficult to dye. The traditional antibacterial fiber mostly ...

Claims

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Application Information

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IPC IPC(8): D01F6/54D01F1/10C08B15/02B22F9/24B82Y40/00
Inventor 李金鹏王斌陈克复
Owner SOUTH CHINA UNIV OF TECH
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