CN105420899B - A kind of high intensity Chitin Cotton blended knitted fabric - Google Patents

Abstract

The invention discloses a production method of a high-strength chitin-cotton blended knitted fabric: mixing Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis and Bacillus megaterium into a composite bacterial agent; Vegan fiber, according to the proportion of 3-5% chitin fiber, the rest is cotton, made into blended yarn, the count of the blended yarn is 14.5Tex, the twist/10cm is 79.0, put into the fermentation broth, insert the bacterial agent Fermentation, the inoculation amount is 1%, the fermentation temperature is 37-39°C, the cultivation time is 5-8 hours, and then weaved into fabrics. The process of the invention is simple and easy to operate, the modification effect is good, and the strength of the chitin-cotton blended knitted fabric can be greatly improved, and the antibacterial performance is also improved. The frequency increases and subsides.

Description

A high-strength chitin-cotton blended knitted fabric

technical field

The invention relates to a high-strength chitin-cotton blended knitted fabric and a production process thereof, belonging to the field of fabric finishing.

Background technique

Chitin fiber is a natural antibacterial fiber, and its blended fabric with cotton fiber has the characteristics of firmness, no wrinkle or shrinkage, bright color, good sweat absorption, not easy to fade and excellent antibacterial properties. The antibacterial principle of chitin fiber is relatively complicated. At present, there are mainly the following two theories: first, amino cations in chitin macromolecules and anions such as sialyl phospholipids that constitute the microbial cell wall attract each other, and the result limits the degree of freedom of microorganisms. It hinders its metabolism and reproduction; the second low molecular weight can enter the microbial cells, preventing the replication of the microbial genetic code from DNA to RNA, thus hindering the reproduction of microorganisms. Chitin is a polysaccharide in carbohydrates. When the acetamide group in chitin reaches more than 50% under the action of strong alkali, it is called chitin, commonly known as chitin, and its chemical name is 1,4-diamino- β-D-glucose, light milky color with pearly luster. Through the blended yarn method, chitin fiber and other textile fibers can be mixed in a certain proportion and then spun into yarn, which can be further processed into various types of fabrics.

In the prior art, some people use chitin fiber and cotton to blend into yarn at a ratio of 5/95, which can improve the quality of the yarn due to the increase of the short-staple rate in the spinning process, and can reduce the cost of the yarn, while the blended yarn Does not affect the antibacterial and health care properties of chitin fiber. Chitin fiber has excellent safety, unique biomedical properties and good comfort performance, maintains a good microbial balance and microclimate comfort on the skin surface, and is an ideal skin-adhering fiber material. Due to the high price of chitin fiber, it can be controlled at about 5% for general fabrics, but it is better not to be lower than 2.5%. Otherwise it will affect the antibacterial effect of the fabric. Chitin fiber has a positive charge and has a fast dyeing speed, so cationic modification of cotton fiber can significantly increase the dyeing rate and percentage of cotton fiber reactive dyes. The chitin/modified cotton fabric has good color fastness and color tone after being dyed with reactive dyes in one bath.

The use of microorganisms to improve chitin fiber is a new field, and the cost of microbial fermentation is low, which is a new technology with great market potential in the future.

The purpose of this invention is to provide a new microbial modification and production process of high-strength chitin-cotton blended knitted fabrics. Through specific microorganisms and fermentation methods, the strength of chitin-cotton blended knitted fabrics can be greatly improved, and the antibacterial properties are also improved. In addition, it can also improve wrinkle resistance and air permeability, and these properties will not fade with the increase in the number of washings. After retrieval, such a technical solution has not been disclosed yet.

Contents of the invention

Based on the technical problems in the background technology, the present invention aims at the problems in the background technology, and provides the microbial modification and production process of high-strength chitin-cotton blended knitted fabrics. Through specific microorganisms and fermentation methods, large The strength of the chitin-cotton blended knitted fabric is greatly improved, and the antibacterial performance is also improved. In addition, the wrinkle resistance and air permeability can be improved, and these properties will not fade with the increase in the number of washings.

The object of the present invention is achieved through the following technical solutions:

A kind of production method of high strength chitin cotton blended knitted fabric:

(1) Preparation of composite bacterial agent: Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis, and Bacillus megaterium are formulated into composite bacterial agent;

The Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis and Bacillus megaterium are mixed according to the quantity ratio of 0.5:0.8:1:1.2.

(2) Configure fermentation culture medium: corn steep liquor 9-12g/L, trehalose 0.8-1.5g/L, vitamin C: 30ug/L, pH: 7.5-8.0; cool to 33 degrees after sterilization;

(3) Fermentation: the chitin fiber of 1.5D*38mm is made into blended yarn according to the proportion of 3-5% chitin fiber, and the rest is cotton. The count of the blended yarn is 14.5Tex, and the twist/10cm is 79.0, put it into the fermentation culture liquid, insert the bacterial agent for fermentation, the inoculum amount is 1%, the fermentation temperature is 37-39°C, and the incubation time is 5-8 hours.

(4) Inactivation treatment: Take out the fabric and put it into 80°C water for 15min-30min, rinse it with clean water, and dry it at 60°C at low temperature;

(5) Making thread fabric: use the above-mentioned blended yarn, the coil length is 240-255mm/100 coils, the weight of the machine is 120g/㎡, the yarn tension is controlled at 5-9g, and the speed is 20-22r/min.

Nature is rich in microbial resources. Since ancient times, different types of microorganisms have been used in food and other production processes. In modern times, they are used in medical treatment and even sewage treatment. However, there are very few studies on the use of microorganisms in the modification of fabrics. Through many years of hard work and a large number of experiments, the inventor found that Lactococcus sheath lactis, Sphingomonas, Bacillus coagulans, and Bacillus megaterium can be used in combination for the modification of chitin fibers. Such technology has not yet been developed. There are reports.

In addition, the fermentation process of microorganisms is ever-changing, and it is also important to reasonably control the fermentation process.

The benefits of the present invention are:

The process of the invention is simple and easy to operate, the modification effect is good, the strength of the chitin-cotton blended knitted fabric can be greatly improved, the antibacterial performance is also improved, and the wrinkle resistance and air permeability can also be improved, and these properties will not be lost with washing The frequency increases and subsides. After retrieval, such a technical solution has not been disclosed yet.

detailed description

Example 1:

Preparation of compound bacterial agent:

Preparation of Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis, Bacillus megaterium:

Slant medium (g/L): 20 glucose, 5 yeast powder, 10 soybean peptone, 10 beef extract, 5NaCl, 10 sodium acetate, 2 ammonium citrate, 0.2MgSO4 7H2O, 0.05MnSO4 7H2O, 15 agar, pH 6.5 .

Fermentation medium (g/L): 40 glucose, 10 yeast powder, 10 soybean peptone, inorganic salt (0.01NaCl, 0.5 sodium acetate, 0.2 ammonium citrate, 0.2KH2PO4, 0.2MgSO4 7H2O, 0.05MnSO4 7H2O), pH 6.5.

Fermentation method: take 1 ring on the slope and inoculate it into a 500mL shake flask with a liquid volume of 150mL, culture at 37°C and 150rpm for 24h to logarithmic phase. The cells were collected by centrifugation at 5000rpm for 10min.

The bacteria powder prepared above can also be obtained directly by purchasing.

Preparation of compound bacterial agent: mix Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis, and Bacillus megaterium according to the ratio of 0.5:0.8:1:1.2.

Example 2:

Production method of high-strength chitin-cotton blended knitted fabric:

(1) Preparation of composite bacterial agent: Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis, and Bacillus megaterium are formulated into composite bacterial agent;

The Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis and Bacillus megaterium are mixed according to the quantity ratio of 0.5:0.8:1:1.2.

(2) Prepare fermentation medium: corn steep liquor 9g/L, trehalose 1.5g/L, vitamin C: 30ug/L, pH: 7.5; cool to 33 degrees after sterilization;

(3) fermentation: the chitin fiber of 1.5D*38mm, according to the ratio of 5% chitin fiber, the rest is cotton, made into blended yarn, the count of the blended yarn is 14.5Tex, and the twist/10cm is 79.0, Put it into the fermentation culture liquid, insert the bacterial agent for fermentation, the inoculum amount is 1%, the fermentation temperature is 37° C., and the cultivation time is 8 hours.

(4) Inactivation treatment: Take out the fabric and put it into 80°C water for 15 minutes, rinse it with clean water, and dry it at 60°C at low temperature;

(5) Making thread fabric: adopt the above-mentioned blended yarn, the coil length is 255mm/100 coils, the weight of the machine is 120g/㎡, the yarn tension is controlled at 5g, and the machine speed is 22r/min.

Example 3:

Production method of high-strength chitin-cotton blended knitted fabric:

(1) Preparation of composite bacterial agent: Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis, and Bacillus megaterium are formulated into composite bacterial agent;

The Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis and Bacillus megaterium are mixed according to the quantity ratio of 0.5:0.8:1:1.2.

(2) Configure fermentation culture medium: corn steep liquor 12g/L, trehalose 0.8g/L, vitamin C: 30ug/L, pH: 8.0; cool to 33 degrees after sterilization;

(3) fermentation: the chitin fiber of 1.5D*38mm, according to the ratio of 3% chitin fiber, the rest is cotton, made into blended yarn, the count of the blended yarn is 14.5Tex, and the twist/10cm is 79.0, Put it into the fermentation culture liquid, insert the bacteria agent for fermentation, the inoculation amount is 1%, the fermentation temperature is 39° C., and the cultivation time is 5 hours.

(4) Inactivation treatment: Take out the fabric and put it into 80°C water for 30 minutes, rinse it with clean water, and dry it at 60°C at low temperature;

(5) Making thread fabric: adopt the above-mentioned blended yarn, the coil length is 240mm/100 coils, the weight of the machine is 120g/㎡, the yarn tension is controlled at 9g, and the machine speed is 20r/min.

Example 4:

Production method of high-strength chitin-cotton blended knitted fabric:

(1) Preparation of composite bacterial agent: Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis, and Bacillus megaterium are formulated into composite bacterial agent;

The Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis and Bacillus megaterium are mixed according to the quantity ratio of 0.5:0.8:1:1.2.

(2) Configure fermentation culture medium: corn steep liquor 10g/L, trehalose 1.4g/L, vitamin C: 30ug/L, pH: 7.6; cool to 33 degrees after sterilization;

(3) fermentation: the chitin fiber of 1.5D*38mm, according to the ratio of 4% chitin fiber, the rest is cotton, made into blended yarn, the count of the blended yarn is 14.5Tex, and the twist/10cm is 79.0, Put it into the fermentation culture liquid, insert the bacterial agent for fermentation, the inoculum amount is 1%, the fermentation temperature is 38°C, and the cultivation time is 7 hours.

(4) Inactivation treatment: Take out the fabric and put it into 80°C water for 16 minutes, rinse it with clean water, and dry it at 60°C at low temperature;

(5) Making thread fabric: adopt the above-mentioned blended yarn, the coil length is 254mm/100 coils, the weight of the machine is 120g/㎡, the yarn tension is controlled at 6g, and the machine speed is 21r/min.

Example 5:

Production method of high-strength chitin-cotton blended knitted fabric:

(1) Preparation of composite bacterial agent: Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis, and Bacillus megaterium are formulated into composite bacterial agent;

The Lactobacillus adolescentis, Sphingomonas, Bacillus licheniformis and Bacillus megaterium are mixed according to the quantity ratio of 0.5:0.8:1:1.2.

(2) Configure fermentation culture medium: corn steep liquor 11g/L, trehalose 0.9g/L, vitamin C: 30ug/L, pH: 7.9; cool to 33 degrees after sterilization;

(3) fermentation: the chitin fiber of 1.5D*38mm, according to the ratio of 3% chitin fiber, the rest is cotton, made into blended yarn, the count of the blended yarn is 14.5Tex, and the twist/10cm is 79.0, Put it into the fermentation culture liquid, insert the bacterial agent for fermentation, the inoculum amount is 1%, the fermentation temperature is 37° C., and the incubation time is 6 hours.

(4) Inactivation treatment: Take out the fabric and put it into 80°C water for 29 minutes, rinse it with clean water, and dry it at 60°C at low temperature;

(5) Making thread fabric: adopt the above-mentioned blended yarn, the coil length is 241mm/100 coils, the weight of the machine is 120g/㎡, the yarn tension is controlled at 8g, and the machine speed is 20r/min.

Embodiment 6 Comparative Example 1:

Lactobacillus adolescentis only, Sphingomonas:

Production method of high-strength chitin-cotton blended knitted fabric:

(1) Preparation of composite bacterial agent: Lactobacillus adolescentis and Sphingomonas are formulated into composite bacterial agent;

The Lactobacillus adolescentis and Sphingomonas are mixed according to the quantity ratio of 0.5:0.8.

(2) Configure fermentation culture medium: corn steep liquor 9g/L, trehalose 1.3g/L, vitamin C: 30ug/L, pH: 7.7; cool to 33 degrees after sterilization;

(3) fermentation: the chitin fiber of 1.5D*38mm, according to the ratio of 3% chitin fiber, the rest is cotton, made into blended yarn, the count of the blended yarn is 14.5Tex, and the twist/10cm is 79.0, Put it into the fermentation culture liquid, insert the bacterial agent for fermentation, the inoculum amount is 1%, the fermentation temperature is 39° C., and the cultivation time is 8 hours.

(4) Inactivation treatment: Take out the fabric and put it into 80°C water for 17 minutes, rinse it with clean water, and dry it at 60°C at low temperature;

(5) Making thread fabric: adopt the above-mentioned blended yarn, the coil length is 253mm/100 coils, the weight of the machine is 120g/㎡, the yarn tension is controlled at 7g, and the machine speed is 22r/min.

Embodiment 7 Comparative Example 2:

Only with Bacillus licheniformis:

Production method of high-strength chitin-cotton blended knitted fabric:

(1) Prepare composite microbial agent: Bacillus licheniformis;

(2) Configure fermentation culture medium: corn steep liquor 12g/L, trehalose 1.0g/L, vitamin C: 30ug/L, pH: 7.8; cool to 33 degrees after sterilization;

(3) fermentation: the chitin fiber of 1.5D*38mm, according to the ratio of 4% chitin fiber, the rest is cotton, made into blended yarn, the count of the blended yarn is 14.5Tex, and the twist/10cm is 79.0, Put it into the fermentation culture liquid, insert the bacteria agent for fermentation, the inoculum amount is 1%, the fermentation temperature is 38° C., and the cultivation time is 5 hours.

(4) Inactivation treatment: Take out the fabric and put it into 80°C water for 28 minutes, rinse it with clean water, and dry it at 60°C at low temperature;

(5) Making thread fabric: adopt the above-mentioned blended yarn, the coil length is 242mm/100 coils, the weight of the machine is 120g/㎡, the yarn tension is controlled at 5g, and the machine speed is 21r/min.

Embodiment 8 Comparative Example 3:

Only with Bacillus megaterium:

Production method of high-strength chitin-cotton blended knitted fabric:

(1) Prepare composite bacterial agent: Bacillus megaterium;

(2) Configure fermentation culture medium: corn steep liquor 10g/L, trehalose 1.2g/L, vitamin C: 30ug/L, pH: 7.5; cool to 33 degrees after sterilization;

(3) fermentation: the chitin fiber of 1.5D*38mm, according to the ratio of 5% chitin fiber, the rest is cotton, made into blended yarn, the count of the blended yarn is 14.5Tex, and the twist/10cm is 79.0, Put it into the fermentation culture liquid, insert the bacterial agent for fermentation, the inoculum amount is 1%, the fermentation temperature is 37° C., and the incubation time is 6 hours.

(4) Inactivation treatment: Take out the fabric and put it into 80°C water for 18 minutes, rinse it with clean water, and dry it at 60°C at low temperature;

(5) Making thread fabric: adopt the above-mentioned blended yarn, the coil length is 252mm/100 coils, the weight of the machine is 120g/㎡, the yarn tension is controlled at 9g, and the machine speed is 20r/min.

Embodiment 9:

Performance Testing:

The properties of the fabric are shown in Table 1:

Table 1

It can be seen that the microbial modification of chitin and cotton blended yarn by using each bacteria alone does not have a good effect, and it can be seen that there is a synergistic effect between the bacteria.

In addition, changes to fermentation conditions can also significantly affect the effect of modification.

This shows that the selection of the process strain of the present invention and the determination of the fermentation process are all extremely important. The process of the invention is simple and easy to operate, the modification effect is good, the strength of the chitin-cotton blended knitted fabric is greatly improved, and the antibacterial performance is also improved. In addition, the wrinkle resistance and air permeability can be improved, and these properties will not change with the number of times of washing. increase and decrease. After testing, after washing 100 times, there is almost no change in performance.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (2)

1. A kind of 1. production method of high intensity Chitin Cotton blended knitted fabric：

   （1）Prepare composite bacteria agent：Adolescentis, Sphingol single-cell, bacillus licheniformis, bacillus megaterium are configured to Composite bacteria agent；

   The adolescentis, Sphingol single-cell, bacillus licheniformis, bacillus megaterium is according to quantity than 0.5:0.8:1: 1.2 mixing；

   （2）Configure fermentation culture：Corn steep liquor 9-12g/L, trehalose 0.8-1.5g/L, vitamin C：30ug/L, pH：7.5- 8.0；33 degree are cooled to after sterilizing；

   （3）Fermentation：By 1.5D*38mm chitin fiber, proportionally 3-5% chitin fibers, remaining is cotton, and blending is made Yarn, the mixed yarn fineness are 14.5Tex, and the twist/10cm is 79.0, is put into fermentation culture, accesses bacteria fermentation, inoculation Amount 1%, 37-39 DEG C of fermentation temperature, incubation time 5-8 hours；

   （4）Inactivation treatment：Mixed yarn is taken out in 80 DEG C of water of input and keeps 15min-30min, clear water rinsed clean, 60 DEG C of low temperature Drying；

   （5）Make rib fabric：Using above-mentioned mixed yarn, 240-255mm/100 coil of loop length, lower machine grammes per square metre 120g/ ㎡, yarn tension are controlled in 5-9g, speed 20-22r/min；

   Still further comprise dyeing and finishing processing.
2. 2. the high intensity Chitin Cotton blended knitted fabric that the production method described in claim 1 is prepared.