CN113322695A - Low-temperature dyeing method for cotton by using edible pigment - Google Patents
Low-temperature dyeing method for cotton by using edible pigment Download PDFInfo
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- CN113322695A CN113322695A CN202110479431.0A CN202110479431A CN113322695A CN 113322695 A CN113322695 A CN 113322695A CN 202110479431 A CN202110479431 A CN 202110479431A CN 113322695 A CN113322695 A CN 113322695A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/34—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using natural dyestuffs
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/46—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing natural macromolecular substances or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/46—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing natural macromolecular substances or derivatives thereof
- D06P1/48—Derivatives of carbohydrates
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
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Abstract
The invention provides a method for dyeing cotton at low temperature by using edible pigment, which comprises the following steps: dissolving edible pigment and carboxymethyl chitosan in deionized water, adjusting the pH value of the solution to 5-6 by using sodium hydroxide, heating the solution to 50-60 ℃, adding laccase, and uniformly stirring to obtain a dyed cotton solution, wherein the dyeing bath ratio is 30: 1-10: 1; adding cotton, reacting for 4-5h, washing and drying the cotton to obtain the edible pigment enzymatic dyed cotton. Compared with the traditional dyeing process, the invention reduces the use of chemical auxiliary agents, uses green and environment-friendly auxiliary agents, reduces the cost, has the dyeing temperature of 50-60 ℃, and greatly reduces the energy loss. The edible pigment used in the invention is natural edible pigment, such as: tea polyphenol extracted from folium Camelliae sinensis, or synthetic edible pigment such as: carmine, brilliant blue, and lemon yellow. The used edible pigments are all green, safe and harmless, and are energy-saving and environment-friendly.
Description
Technical Field
The invention belongs to the field of textile dyeing, and particularly relates to a method for dyeing cotton at a low temperature by using an edible pigment.
Background
Cotton fiber is a natural cellulose fiber, has a large yield in China, is widely applied to the fields of clothing, decoration, industry and the like due to the characteristics of good hygroscopicity, air permeability, heat retention, dyeability, low price and the like, and is often used as underwear, baby clothing, spring and autumn clothing fabrics, summer fabrics and the like in daily life. Therefore, the dyeing of cotton is significant.
Cotton is generally dyed using direct dyes, reactive dyes and vat dyes. In recent years, green and environment-friendly dyes and auxiliaries are favored, and the research of natural dyes is a hot spot. However, the dyeing temperature of cotton is generally 90-100 ℃, and the energy consumption is large. Meanwhile, after dyeing, washing is needed for many times, and dyeing wastewater is difficult to degrade. Although the chinese patent 201110240401.0 discloses an all cotton dyeing process, the dyeing process is complicated and requires different amounts of NaOH to be added at different time periods. As NaOH is strong alkali, the pH value of the dye solution is 12-14 in the dyeing process, and a certain potential safety hazard exists when the dye solution is used in a large amount in a factory. And the pH value of the dyeing wastewater is too high, thus increasing the difficulty of sewage treatment. Although the Chinese patent 202010077119.4 discloses an enzyme dyeing one-bath dyeing process for cotton fabrics, the dyeing cost is too high because a treatment solution of compound bio-enzyme is prepared by using a plurality of enzymes such as alkaline pectin lyase, neutral cellulase, enriched endonuclease, laccase and the like. The method also needs to use a surfactant CLD-H, a spandex refining oil removing agent ACR, a penetrating agent JFC and a large amount of caustic soda and anhydrous sodium sulphate, and is contrary to the currently advocated green energy-saving and environment-friendly method.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for dyeing cotton at low temperature by using edible pigment, which has simple process, high dyeing fastness and a certain antibacterial property of the dyed cotton, and green and environment-friendly reagents, energy conservation and environmental protection.
In order to solve the technical problem, an embodiment of the invention provides a method for dyeing cotton at low temperature by using an edible pigment, which comprises the following steps:
s1, dissolving the edible pigment and the carboxymethyl chitosan in deionized water, adjusting the pH value of the solution to 5-6 by using sodium hydroxide, heating the solution to 50-60 ℃, adding laccase, and uniformly stirring to obtain a dyed cotton solution, wherein the dyeing bath ratio is 30: 1-10: 1;
and S2, adding cotton, reacting for 4-5h, washing and drying the cotton to obtain the edible pigment enzymatic dyed cotton.
Wherein the dosage of the edible pigment is 0.1-0.2% of the mass of the dyed cotton solution, the dosage of the carboxymethyl chitosan is 0.5-1% of the mass of the dyed cotton solution, and the dosage of the laccase is 0.6-1% of the mass of the dyed cotton solution.
Preferably, the cotton is one of loose cotton fiber, cotton yarn and cotton fabric. The edible pigment is one of tea polyphenols, lemon yellow, brilliant blue and carmine. The carboxymethyl chitosan has a carboxymethyl substitution degree less than 1. The laccase is produced from red thrombus or aspergillus, and the enzyme activity is 0.1-10U/mg.
Wherein the washing condition is washing in warm water of 50-60 deg.C for 5-10min, and then washing in water of 10-20 deg.C for 5-10 min. The drying condition is drying at 90-100 ℃ for 10-30 min.
The technical scheme of the invention has the following beneficial effects:
1. compared with the traditional dyeing process, the method reduces the use of chemical auxiliaries, uses green and environment-friendly auxiliaries, reduces the cost, and greatly reduces the energy loss, and the dyeing temperature is 50-60 ℃.
2. The invention uses laccase to catalyze edible pigment, and the low-temperature dyeing effect is obvious. Meanwhile, the dyed cotton has higher rubbing color fastness, soaping color fastness, color fastness to sunlight and certain antibacterial property.
3. The carboxymethyl chitosan used in the invention is a water-soluble chitosan derivative, and the structure of the carboxymethyl chitosan contains a large amount of amino and hydroxyl, so that the carboxymethyl chitosan can be firmly combined with cotton by hydrogen bonds and covalent bonds, thereby improving the dye uptake and the dye fastness. Because carboxymethyl chitosan has certain antibacterial property, the antibacterial property of the dyed cotton is greatly improved.
4. The edible pigment used in the invention is natural edible pigment, such as: tea polyphenol extracted from folium Camelliae sinensis, or synthetic edible pigment such as: carmine, brilliant blue, and lemon yellow. The used edible pigments are all green, safe and harmless.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description is given with reference to specific embodiments.
The invention provides a method for dyeing cotton at low temperature by using edible pigment, which comprises the following steps:
s1, dissolving the edible pigment and the carboxymethyl chitosan in deionized water, adjusting the pH value of the solution to 5-6 by using sodium hydroxide, heating the solution to 50-60 ℃, adding laccase, and uniformly stirring to obtain a dyed cotton solution, wherein the dyeing bath ratio is 30: 1-10: 1;
and S2, adding cotton, reacting for 4-5h, washing and drying the cotton to obtain the edible pigment enzymatic dyed cotton.
The edible pigment is 0.1-0.2% of the mass of the dyed cotton solution, the carboxymethyl chitosan is 0.5-1% of the mass of the dyed cotton solution, and the laccase is 0.6-1% of the mass of the dyed cotton solution. The cotton is one of cotton loose fibers, cotton yarns and cotton fabrics. The edible pigment is one of tea polyphenols, lemon yellow, brilliant blue and carmine.
Preferably, the carboxymethyl chitosan has a carboxymethyl substitution degree of less than 1. The laccase is produced from red thrombus or aspergillus, and the enzyme activity is 0.1-10U/mg. The washing condition is that after washing in warm water at 50-60 ℃ for 5-10min, washing in water at 10-20 ℃ for 5-10 min. The drying condition is drying at 90-100 ℃ for 10-30 min.
The technical scheme of the invention is further illustrated by the following specific examples.
Example 1:
dissolving 0.03g of tea polyphenol with purity of 98% and 0.02g of carboxymethyl chitosan with substitution degree of 0.8 in 25mL of deionized water, adjusting the pH value of the solution to 5 by using sodium hydroxide, heating the solution to 55 ℃, adding 0.20g of laccase (produced from aspergillus strains and having enzyme activity of 0.1U/mg) into the solution, uniformly stirring the solution, and then adding 1g of bleached pure cotton woven fabric (with the surface density of 175.4 g/m)2) And reacting for 4 hours. After the reaction was complete, the tea polyphenol stained cotton was washed in warm water at 55 ℃ for 5min, followed by washing in water at 19 ℃ for 5 min. And finally drying at 95 ℃ for 15 min.
Example 2:
adding 0.05g carmineAnd 0.02g of carboxymethyl chitosan with the degree of substitution of 0.8 are dissolved in 25mL of deionized water, the pH value of the solution is adjusted to 5.5 by using sodium hydroxide, the solution is heated to 60 ℃, 0.20g of laccase (produced from a red thrombus strain and with the enzyme activity of 0.1U/mg) is added and stirred uniformly, and then 1g of bleached pure cotton woven fabric (with the surface density of 175.4 g/m) is added2) And reacting for 4 hours. After the reaction was complete, the tea polyphenol stained cotton was washed in warm water at 55 ℃ for 5min, followed by washing in water at 19 ℃ for 5 min. And finally drying at 95 ℃ for 15 min.
Example 3:
dissolving 0.05g of lemon yellow and 0.02g of carboxymethyl chitosan with the degree of substitution of 0.7 in 25mL of deionized water, adjusting the pH value of the solution to 6 by using sodium hydroxide, heating the solution to 50 ℃, adding 0.20g of laccase (produced from aspergillus strains and having the enzyme activity of 10U/mg) into the solution, uniformly stirring the solution, and then adding 1g of bleached pure cotton woven fabric (the surface density of 175.4 g/m)2) And reacting for 4 hours. After the reaction was complete, the tea polyphenol stained cotton was washed in warm water at 55 ℃ for 5min, followed by washing in water at 19 ℃ for 5 min. And finally drying at 95 ℃ for 15 min.
Example 4:
dissolving 0.03g of brilliant blue and 0.02g of carboxymethyl chitosan with the degree of substitution of 0.7 in 25mL of deionized water, adjusting the pH value of the solution to 5.5 by using sodium hydroxide, heating the solution to 60 ℃, adding 0.20g of laccase (produced from trametes cinnabarina strains and having the enzyme activity of 10U/mg) into the solution, uniformly stirring the solution, and then adding 1g of bleached pure cotton woven fabric (the surface density of the bleached pure cotton woven fabric is 175.4g/m2) And reacting for 4 hours. After the reaction was complete, the tea polyphenol stained cotton was washed in warm water at 55 ℃ for 5min, followed by washing in water at 19 ℃ for 5 min. And finally drying at 95 ℃ for 15 min.
And (3) shearing the dyed fiber into a sample, balancing the sample in a constant temperature and humidity chamber (the temperature is 20 ℃ and the humidity is 65%) for 24 hours, and testing. The index test is carried out on the dyed cashmere fiber, and the index test comprises the following steps:
the color fastness to rubbing is referred to GB/T3920-.
The soaping color fastness is referred to GB/T3921-2008 (textile color fastness test soaping color fastness resistance).
The color fastness to sunlight is referred to GB/T8427-.
And (3) testing a K/S value, measuring the L value, the a value, the b value and the K/S value of the cashmere fiber dyed by the laccase, measuring four times, and taking an average value under the condition that the error range is less than 0.5.
The antibacterial performance test is referred to the AATCC100-2012 standard. Staphylococcus aureus was used as a gram-positive bacterium, and Escherichia coli was used as a gram-negative bacterium.
The test results are shown in table 1, table 2 and table 3.
Table 1: effect of dyeing method on dyeing effect of dyed cotton
Table 2: influence of dyeing method on bacteriostatic rate of dyed cotton
Table 3: effect of dyeing method on dyeing fastness of dyed cotton
Compared with the traditional dyeing process, the invention reduces the use of chemical auxiliary agents, uses green and environment-friendly auxiliary agents, reduces the cost, has the dyeing temperature of 50-60 ℃, and greatly reduces the energy loss. The edible pigment used in the invention is natural edible pigment, such as: tea polyphenol extracted from folium Camelliae sinensis, or synthetic edible pigment such as: carmine, brilliant blue, and lemon yellow. The used edible pigments are all green, safe and harmless, and are energy-saving and environment-friendly.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A method for dyeing cotton at low temperature by using edible pigment is characterized by comprising the following steps:
s1, dissolving the edible pigment and the carboxymethyl chitosan in deionized water, adjusting the pH value of the solution to 5-6 by using sodium hydroxide, heating the solution to 50-60 ℃, adding laccase, and uniformly stirring to obtain a dyed cotton solution, wherein the dyeing bath ratio is 30: 1-10: 1;
and S2, adding cotton, reacting for 4-5h, washing and drying the cotton to obtain the edible pigment enzymatic dyed cotton.
2. The method for dyeing cotton at low temperature by using the edible pigment according to claim 1, wherein the amount of the edible pigment is 0.1-0.2% of the mass of the dyeing cotton solution, the amount of the carboxymethyl chitosan is 0.5-1% of the mass of the dyeing cotton solution, and the amount of the laccase is 0.6-1% of the mass of the dyeing cotton solution.
3. The method for dyeing cotton at low temperature by using edible pigment according to claim 1, wherein the cotton is one of cotton loose fiber, cotton yarn and cotton fabric.
4. The method for dyeing cotton at low temperature by using the edible pigment according to claim 1 or 2, wherein the edible pigment is one of tea polyphenol, lemon yellow, brilliant blue and carmine.
5. The method for dyeing cotton at low temperature by using food color as claimed in claim 1 or 2, wherein the carboxymethyl chitosan has a carboxymethyl substitution degree of less than 1.
6. The method for dyeing cotton at low temperature by using edible pigment as claimed in claim 1 or 2, wherein the laccase is produced from trametes cinnabarina or aspergillus, and the enzyme activity is 0.1-10U/mg.
7. The method for dyeing cotton at low temperature by using edible pigment as claimed in claim 1, wherein the washing condition is washing in warm water at 50-60 ℃ for 5-10min, and then washing in water at 10-20 ℃ for 5-10 min.
8. The method for dyeing cotton at low temperature by using edible pigment as claimed in claim 1, wherein the drying condition is drying at 90-100 ℃ for 10-30 min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756111A (en) * | 2021-10-08 | 2021-12-07 | 武汉纺织大学 | Yellow lyocell fabric prepared by dyeing Blakeslea trispora fermentation extract and preparation method thereof |
| CN113802395A (en) * | 2021-10-08 | 2021-12-17 | 武汉纺织大学 | Blue Lyocell fabric prepared by dyeing escherichia coli fermentation extract and preparation method thereof |
| CN113863030A (en) * | 2021-10-08 | 2021-12-31 | 武汉纺织大学 | Orange lyocell fabric prepared by dyeing monascus fermentation extract and preparation method thereof |
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| CN110499655A (en) * | 2019-08-06 | 2019-11-26 | 浙江理工大学 | A kind of method of the natural dye dying of carboxymethyl chitosan Si modification cotton fabric |
| CN112593425A (en) * | 2020-12-05 | 2021-04-02 | 浙江灏宇科技有限公司 | Finishing method for improving color fastness of cotton fabric dyed by laccase-catalyzed plant dye |
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2021
- 2021-04-30 CN CN202110479431.0A patent/CN113322695A/en active Pending
Patent Citations (5)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113802395A (en) * | 2021-10-08 | 2021-12-17 | 武汉纺织大学 | Blue Lyocell fabric prepared by dyeing escherichia coli fermentation extract and preparation method thereof |
| CN113863030A (en) * | 2021-10-08 | 2021-12-31 | 武汉纺织大学 | Orange lyocell fabric prepared by dyeing monascus fermentation extract and preparation method thereof |
| CN113863030B (en) * | 2021-10-08 | 2023-11-21 | 芽米科技(广州)有限公司 | Orange lyocell fabric prepared by dyeing monascus fermentation extract and preparation method thereof |
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Application publication date: 20210831 |