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Method for preparing nano silver-containing anti-bacterial fabric by immersion process

A nano-silver antibacterial and impregnation technology, which is applied in the directions of plant fibers, animal fibers, textiles and papermaking, can solve the problems of no antibacterial properties of carrier materials, cannot meet market requirements, and few antibacterial active ingredients, and is suitable for large-scale production. , Efficient and durable antibacterial properties, good soaping fastness effect

Active Publication Date: 2011-08-31
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic antibacterial agents have been unable to meet market requirements due to their poor chemical stability and poor heat resistance.
In recent years, inorganic nanomaterials have developed rapidly, but most reports are loaded on carrier materials (such as molecular sieves, montmorillonite, calcium carbonate, etc.) Sex, less active antibacterial ingredients, large amount of antibacterial agents, etc.

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
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  • Method for preparing nano silver-containing anti-bacterial fabric by immersion process
  • Method for preparing nano silver-containing anti-bacterial fabric by immersion process
  • Method for preparing nano silver-containing anti-bacterial fabric by immersion process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 3g of Tris and dissolve it in 150ml of water to prepare a Tris buffer solution, dissolve dopamine hydrochloride in the Tris buffer solution, the concentration of the dopamine solution is 0.2mol / L, adjust the pH value of the solution to 8.5 with hydrochloric acid, and then take 5g Put the cleaned cotton fabric into the reaction bath, control the reaction temperature to 30°C, take it out after reacting for 24 hours under the condition of magnetic stirring, clean it with distilled water, and then put it into the silver nitrate solution with a concentration of 0.3mol / L , with a bath ratio of 1:60, taken out after immersion for 8 hours, rinsed with distilled water, and dried under vacuum at 40°C. The cotton fabric with antibacterial function containing nano-silver particles can be obtained.

[0026] figure 1 X-ray photoelectron spectra of raw cotton fabric (A), cotton fabric after dopamine finishing (B) and cotton fabric (C) containing nano-silver particles prepared f...

Embodiment 2

[0031] According to the method described in Example 1, nano silver-loaded antibacterial fabrics were prepared, the concentration of the dopamine solution was adjusted to 0.1 mol / L, the concentration of silver nitrate was adjusted to 0.1 mol / L, and other conditions were unchanged. The prepared cotton fabric containing nano-silver particles with antibacterial function has a nano-silver content of 27 mg / g. After being washed 30 times, the silver content can still reach 11 mg / g, and the bactericidal rate can reach 100%.

Embodiment 3

[0033] According to the method described in Example 1, nano silver-loaded antibacterial fabrics were prepared, and the impregnated cotton fabrics were changed to hydrophobic polyester fabrics, and other conditions were unchanged. The prepared polyester fabric containing nano-silver particles with antibacterial function has a nano-silver content of 10 mg / g. After 30 times of washing, the silver content can still reach 3 mg / g, and the bactericidal rate can reach 100%.

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Abstract

The invention relates to a method for preparing a nano silver-containing anti-bacterial fabric by an immersion process. The method comprises the following steps: dissolving dopamine hydrochloride in Tris buffer solution; adjusting the pH value of solution to be between 7 and 10 by using hydrochloric acid; immerging a fabric into prepared dopamine solution in a bath ratio of 1:30; after stirring for reacting at the temperature of between 20 and 40 DEG C for 20 to 30 hours, taking the fabric out and washing to obtain a poly dopamine film-coated fabric; putting the fabric into silver nitrate aqueous solution; and after immerging for 8 to 10 hours, washing and drying the fabric to obtain the nano silver-containing fabric. The nano silver-containing fabric prepared by the method has the characteristics of high soaping fastness resistance and lasting antibiotic property; a sterilizing rate is still up to 100 percent after the fabric is washed with water for 30 times; and the preparation method has the characteristics of simple process, no pollution to the environment, low cost and large-scale production.

Description

technical field [0001] The invention belongs to the field of finishing and preparation of nano-silver antibacterial fabrics, in particular to a method for preparing nano-silver antibacterial fabrics by dipping. Background technique [0002] With the improvement of living standards, people's requirements for the hygienic wearability of textiles are gradually increasing, and the market for textiles with antibacterial functions is also gradually expanding. At present, antibacterial agents can be roughly divided into two categories: inorganic series antibacterial agents and organic series antibacterial agents. Organic antibacterial agents have been unable to meet market requirements due to their poor chemical stability and poor heat resistance. In recent years, inorganic nanomaterials have developed rapidly, but most reports are loaded on carrier materials (such as molecular sieves, montmorillonite, calcium carbonate, etc.) Sex, less antibacterial active ingredients, large amo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M101/28D06M101/06D06M101/12D06M15/61D06M11/83D06M101/32
Inventor 徐红石雪毛志平张琳萍钟毅马辉王晶刘艳
Owner DONGHUA UNIV
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