CN101787646A - Antibiosis sorting method of fiber textile containing cellulose - Google Patents

Abstract

The invention discloses an antibacterial finishing method for textiles containing cellulose fibers. The textiles containing cellulose fibers are dipped in silver nitrate solution at a temperature of 50-90 DEG C for 4-24 hours, taken out, washed with water and dried in the air to obtain the antibacterial textiles. The invention utilizes the cellulose contained in the textile to directly reduce the silver nitrate solution, and the cellulose is used as both a reducing agent and a protective agent without adding any other auxiliaries, the preparation process is simple, the cost is low, easy to industrialize, and conforms to the green technology Requirements: By changing the immersion time of the textile in the silver nitrate solution and the concentration of the silver nitrate solution to control the loading of nano-silver on the surface of the textile, the nano-silver is uniformly distributed, the particle size is small, and it has excellent storage stability; the prepared nano-silver Antibacterial textiles have strong antibacterial ability, long-lasting effect, wash resistance, and unaffected hand feeling.

Description

A kind of antibacterial finishing method of textile containing cellulose fiber

technical field

The invention relates to an antibacterial finishing method for textiles, in particular to an antibacterial finishing method for textiles containing cellulose fibers.

Background technique

In daily life, people are inevitably exposed to a variety of microorganisms. These microorganisms are small and reproduce rapidly, causing serious harm to human health and work and study. In recent years, epidemic diseases that have broken out worldwide, such as " "SARS", bird flu and the current H1N1 virus are still lingering fears. Therefore, the demand for antibacterial textiles at home and abroad is increasing at a double speed. Silver-based antibacterial materials, as a class of excellent antibacterial materials with the characteristics of durability, broad spectrum, good heat resistance, high safety, and not easy to produce drug resistance, have broad application prospects and have been attracting attention for a long time.

At present, there are two main types of silver-based antibacterial finishing methods for textiles: one is to first prepare nano-silver aqueous solution or ultrafine particles, and in the presence of a finishing agent, immerse textiles in the solution and absorb nano-silver to the surface of the fabric. Such as Chinese invention patent (CN 101173432A) "a kind of fabric nano-silver antibacterial finishing process" discloses a kind of nano-silver antibacterial fabric finishing process, the penetrant fatty alcohol polyvinyl chloride ether is added in the nano-silver aqueous solution, and then The fabric is soaked, soaked, and flattened to obtain an antibacterial fabric with uniform distribution of nano-silver; the other is to immerse textiles or pretreated textiles in an aqueous solution of silver nitrate, and under the action of reducing agents and dispersants, silver ions are reduced to nano silver. For example, in the Chinese invention patent (CN101307563A) "Nano-silver antibacterial textile finishing method", the textiles loaded with amino-terminated hyperbranched compounds and their quaternary ammonium salts are immersed in 0.01-0.5mol/L silver nitrate solution for 1-120min , to obtain nano-silver antibacterial textiles. In the Chinese invention patent (CN 1558016) "Preparation method of antibacterial fabric loaded with nano-silver", silver nitrate, hydrazine hydrate, and polyethylene glycol are used as raw materials, and surface additives are added to attach nano-silver to the fabric after scouring with sodium hydroxide. Treats between fabric fibers and fabric surfaces. The former method has weak adsorption force, poor fastness, and washability problems; in the latter preparation method, it is necessary to select a suitable reducing agent to reduce silver ions to nano-silver, and to add dispersants, stabilizers, etc. to nano-silver. Silver is dispersed to prevent the aggregation of nano-silver. And above-mentioned two kinds of methods all exist the shortcoming that preparation process is complicated, production cost is higher, does not meet environmental protection requirement.

Contents of the invention

To overcome the problems of complex process, poor stability and non-compliance with environmental protection requirements in the prior art, the purpose of the present invention is to provide a preparation method of cellulose fiber-containing antibacterial textiles with simple method, strong antibacterial ability and long-lasting antibacterial effect.

The technical scheme that the present invention adopts is as follows:

Dip textiles containing cellulose fibers in a silver nitrate solution at a temperature of 50-90°C for 4-24 hours, take them out, wash them with water, and dry them in the air to obtain antibacterial textiles; the concentration of the silver nitrate solution is 0.001-0.01mol/L , pH value is 7.0.

The cellulose fiber-containing textiles are cotton, linen, viscose, or blended woven fabrics, knitted fabrics and non-woven fabrics containing the above fibers.

The textiles of the present invention are textiles containing cellulose fibers. The cellulose macromolecular chain has a strong reducing end, and each glucose unit contains three free hydroxyl groups, which can absorb silver ions in a silver nitrate solution. Next, in situ reduction of silver ions to nano silver. During the reaction process, the cellulose macromolecule is used as both a dispersant and a reducing agent, thereby realizing the preparation of nano-silver antibacterial textiles.

Compared with the prior art, the present invention has the following advantages:

(1) The present invention utilizes the cellulose contained in the textile to directly reduce the silver nitrate solution, and the cellulose is used as a reducing agent and as a protective agent without adding any other auxiliary agents, the preparation process is simple, the cost is low, and it is easy to industrialize, and Meet the requirements of green technology.

(2) The present invention can control the loaded amount of nano-silver on the surface of the textile by changing the immersion time of the textile in the silver nitrate solution and the concentration of the silver nitrate solution. Nano-silver has uniform distribution, small particle size, and excellent storage stability.

(3) The nano-silver antibacterial textile prepared by the present invention has strong antibacterial ability, long-lasting effect, washing resistance, and unaffected hand feeling.

Detailed ways

The technical solutions of the present invention will be described below in conjunction with the embodiments.

Example 1:

Immerse the cotton woven fabric in a silver nitrate solution (pH 7.0) with a concentration of 0.001mol/L, with a bath ratio of 1:50, soak at 90°C for 24 hours, take it out, wash it with water, and dry it in the air to obtain an antibacterial cotton fabric.

Example 2:

Immerse the hemp woven fabric in a silver nitrate solution (pH 7.0) with a concentration of 0.005mol/L, with a bath ratio of 1:50, soak for 12 hours at 70°C, take it out, wash it with water, and dry it in air to obtain an antibacterial hemp fabric.

Example 3:

Immerse the viscose nonwoven fabric in a silver nitrate solution (pH 7.0) with a concentration of 0.01mol/L, with a bath ratio of 1:50, soak for 24 hours at 50°C, take it out, wash it with water, and dry it in air to obtain an antibacterial viscose nonwoven fabric. cloth.

Example 4:

Immerse the polyester-cotton blended knitted fabric in a silver nitrate solution (pH 7.0) with a concentration of 0.005mol/L, the bath ratio is 1:50, soak for 12 hours at 70°C, take it out, wash it with water, and dry it in the air to obtain an antibacterial polyester-cotton blended fabric .

The antibacterial performance and antibacterial effect washability of the antibacterial textiles containing cellulose fibers prepared by embodiments 1, 2, 3, and 4 were tested, as follows:

1. The antibacterial performance test refers to the test method of GB/T 20944.3-2008 "Evaluation of Antibacterial Performance of Textiles".

2. The antibacterial effect and washing resistance are tested according to the test method of GB/T12490-2007 "Tests for Color Fastness of Textiles to Home and Commercial Washing".

Table 1 is the antibacterial performance test result of the antibacterial textiles containing cellulose fibers prepared in Examples 1, 2, 3, and 4. As can be seen from Table 1, the cellulose fiber-containing antibacterial textile prepared by the present invention, according to GB/T12490-2007 "textile color fastness test is resistant to home and commercial washing color fastness" washing program, through 50 times of washing, has no effect on Escherichia coli The antibacterial rate against Escherichia coli and Staphylococcus aureus can still reach more than 98%; after 100 times of washing, the antibacterial rate against Escherichia coli and Staphylococcus aureus can reach more than 80%. It shows that the antibacterial textiles containing cellulose fibers prepared by the present invention have good antibacterial effect and strong washability.

Table 1:

What has been listed above are only specific implementation examples of the present invention. Apparently, the present invention is not limited to the above examples, and many variations are possible. All deformations that can be directly derived or associated by those skilled in the art from the content disclosed in the present invention should be considered as the protection scope of the present invention.

Claims (2)

1. an antibacterial finishing method for cellulose fiber textiles, characterized in that: the cellulose fiber textiles are soaked in a silver nitrate solution at a temperature of 50 to 90°C for 4 to 24 hours, washed and dried after taking out, The antibacterial textile is obtained; the concentration of the silver nitrate solution is 0.001-0.01 mol/L, and the pH value is 7.0. 2. The antibacterial finishing method of a kind of cellulose-containing fiber textiles according to claim 1, characterized in that: the cellulose-containing fiber textiles are cotton, hemp, viscose, or a blended machine containing the above-mentioned fibers. Fabrics, knits and nonwovens.