Preparation method of polyphenol modified nano-silver carrying antibacterial fabric

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...

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.