Preparation method of polyphenol modified nano-silver carrying antibacterial fabric

A nano-silver antibacterial and phenol-modified technology, applied in textiles and papermaking, fiber treatment, biochemical fiber treatment, etc., can solve the problems of special requirements for antibacterial properties, complex process, high price of dopamine, and achieve high-efficiency and long-lasting antibacterial properties. The preparation process is simple, and the materials are cheap and easy to obtain.

Active Publication Date: 2016-08-10
DONGGUAN YIMAO FILTER MEDIA
View PDF5 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the products obtained by the dope spinning method have a long-term antibacterial effect, but the technical requirements are high, the process is complicated, the cost is high, and there are special requirements for the performance of the antibacterial agent, and not all fibers can be spun by solution, making it The wide application is limited; the post-finishing method is widely used at home and abroad as a common method of fabric antibacterial finishing because of its simple technology and easy implementation. Then, the post-finishing method often appears that the fabric after finishing is firm due to the firm bond of nano-silver. The antibacterial effect is not durable enough, and the washability is poor
[0004] Chinese patent CN101864670A discloses a method for preparing antibacterial fabrics loaded with nano-silver by dipping process. The price of the selected raw material dopamine in this method is high, the time used for the dipping process is long, and the deposition and polymerization time of dopamine on the surface of the fabric is long. The available dopamine The range of analogues is limited, which will greatly limit its application
[0005] Nevertheless, in the research literature and patents that have been published, there is no use of this method to achieve in-situ reduction and bonding of nano-silver particles on the surface of the fabric.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] A kind of preparation method of polyphenol modification loaded nano-silver antibacterial fabric, described preparation method is carried out according to the following steps:

[0017] A. dissolving the polyphenolic compound in a tris-hydrochloric acid buffer solution with a pH value of 7.5 to 9 to obtain a polyphenolic compound solution, wherein the concentration of the polyphenolic compound is 0.5 to 4 g / L;

[0018] B. Immerse the cleaned fabric in the polyphenol compound solution obtained in step A at a bath ratio of 1:50, and stir for 0.05 to 1 hour at a temperature of 25 to 40°C at a stirring speed of 100 to 300 r / min, after taking it out, wash it 3 times with deionized water and absolute ethanol successively, and air-dry to obtain the fabric coated with polyphenol compounds on the surface;

[0019] C. Immerse the fabric coated with polyphenol compounds on the surface after the treatment in step B in the silver nitrate aqueous solution with a concentration of 0.05-...

Embodiment 1

[0021] 0.1g of tannic acid was dissolved in 0.2L tris-hydrochloric acid buffer solution with a pH value of 7.5 to obtain a tannic acid solution with a concentration of 0.5g / L; 4g of cotton fabric was soaked in the above-mentioned obtained single In the niacin solution, under the condition of 25° C., take it out after stirring and reacting at a speed of 200 r / min for 0.05 hours, wash the fabric 3 times with deionized water and absolute ethanol successively, and air-dry to obtain the cotton fabric coated with tannic acid; Immerse the fabric coated with tannic acid in 0.24L silver nitrate aqueous solution with a concentration of 0.05mol / L, take it out after reacting for 1 hour at 25°C, and the tannic acid on the surface of the fabric will undergo redox with silver ions After the reaction, silver nanoparticle-loaded fabrics were formed on the surface of the fabrics, washed three times with deionized water and absolute ethanol in turn, and vacuum-dried the fabrics at 40°C for 6 hour...

Embodiment 2

[0023] Dissolve 0.15g of tea polyphenols in 0.15L tris-hydrochloric acid buffer solution with a pH value of 8.5 to obtain a tea polyphenols solution with a concentration of 1.0g / L; soak 3g of hemp fabric in the tea obtained above In the polyphenol solution, under the condition of 30°C, stir and react at a speed of 300r / min for 0.1 hour, take it out, wash the hemp fabric with deionized water and absolute ethanol for 3 times, and air-dry to obtain the hemp fabric coated with tea polyphenols on the surface Immerse the hemp fabric coated with tea polyphenols on the surface in 0.18L silver nitrate aqueous solution with a concentration of 0.1mol / L, and take it out after 12 hours of reaction at 30°C, and the tea polyphenols on the surface of the fabric will react with silver ions. Oxidation-reduction reaction formed silver nanoparticle-loaded fabric on the surface of the fabric, washed three times with deionized water and absolute ethanol in sequence, and vacuum-dried the hemp fabric ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of polyphenol modified nano-silver carrying antibacterial fabric and belongs to the technical field of textiles. According to the method, after being soaked in a polyphenol compound water solution for a reaction, fabric is air-dried to obtain fabric with the surface coated with a polyphenol compound, and then the fabric is soaked in a silver nitrate water solution for a reaction to obtain the polyphenol modified nano-silver carrying antibacterial fabric. According to the method, the polyphenol compound is used for modifying the fabric, nano-silver particles are generated on the surface of the fabric in an in-situ reduction mode through a redox reaction of polyphenol and silver ions, and meanwhile nano-silver can adhere to the surface of the fabric without loss under the coordination effect of the polyphenol compound on the nano-silver particles. The antibacterial fabric has good soaping resistance and efficient and lasting antibacterial properties, and is not prone to fall off; after 30 times of washing, the sterilizing rate can still reach 95-100%; the fabric is diversified in type, wide in application range, simple in preparation process, environmentally friendly, low in cost and suitable for large-scale production, and selected materials are cheap and easy to obtain.

Description

technical field [0001] The invention relates to a preparation method of a polyphenol-modified nano-silver-loaded antibacterial fabric, which belongs to the technical field of textiles. Background technique [0002] With the development of industrial technology and the improvement of people's living standards, the antibacterial problem has been paid more and more attention by countries all over the world. Antibacterial fibers and antibacterial textiles have received widespread attention, so it is of great significance to develop textiles with excellent antibacterial properties. At present, antibacterial agents can be roughly divided into two categories: inorganic and organic antibacterial agents, such as silver nanoparticles, quaternary ammonium salts, N-halogen compounds, guanidine polymers, etc. Bonding loses antibacterial properties and produces drug resistance. [0003] In recent years, with the rapid development of nanotechnology, some nano-inorganic antibacterial agen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): D06M23/00D06M11/83
CPCD06M11/83D06M16/00D06M23/00
Inventor 顾绍金杨玲黄菁菁徐卫林杨红军周应山
Owner DONGGUAN YIMAO FILTER MEDIA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap