Method for improving color depth of textile dyed with honeysuckle extract

Abstract

The application discloses a method for improving color depth of a honeysuckle extract dyed textile, which comprises the following steps: firstly, pretreating a cotton fabric by using sodium hydroxide / urea to promote fiber swelling; then, immersing the cotton fabric in anhydrous ethanol solution containing zinc salt and silane coupling agent, and forming crystal precipitate on the fabric through in-situ reaction; meanwhile, improving the binding fastness of the crystal precipitate and the textile by using the reactivity of the silane coupling agent with the crystal precipitate and the hydroxyl group on cellulose, and giving the cellulose certain positive electric property, so as to improve the color depth of the honeysuckle extract on the fibrous fabric.

Description

Technical Field

[0001] This invention belongs to the field of textiles, specifically relating to a method for improving the color depth of textiles dyed with honeysuckle extract. Background Technology

[0002] Honeysuckle, the dried flower buds or unopened flowers of *Lonicera japonica*, a plant in the Caprifoliaceae family, is a commonly used traditional Chinese medicine with strong broad-spectrum antibacterial properties. The main components of honeysuckle extract are chlorogenic acid, isochlorogenic acid, flavonoids, linalool, and gentioyl alcohol, among others. The flavonoids and tannins it contains are excellent natural plant dyes that can be used for coloring textiles.

[0003] However, due to the low content of plant dyes in honeysuckle extract and the poor affinity of these plant dyes with fabrics (especially cellulosic fiber fabrics), the dyed fabrics have light colors and poor wash fastness.

[0004] Currently, there are few literature reports on the use of honeysuckle extract for dyeing textiles. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problems existing in the above and / or prior art, the present invention is proposed.

[0007] Therefore, the purpose of this invention is to overcome the shortcomings of the prior art and provide a method for improving the color depth of textiles dyed with honeysuckle extract.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a method for improving the color depth of textiles dyed with honeysuckle extract, comprising,

[0009] The pretreated cotton fabric is obtained by pretreating it with sodium hydroxide / urea, followed by washing and drying.

[0010] Preparation of anhydrous ethanol solutions of zinc salts and silane coupling agents;

[0011] The pretreated cotton fabric was immersed in an anhydrous ethanol solution of zinc salt and silane coupling agent and ultrasonically reacted under ice bath conditions. After the reaction was completed, deionized water was added and reacted at room temperature. The modified cotton fabric was obtained by washing and drying with deionized water.

[0012] Textiles were dyed using honeysuckle extract.

[0013] As a preferred embodiment of the method described in this invention, the pretreatment of cotton fabric with sodium hydroxide / urea includes,

[0014] Sodium hydroxide and urea were dissolved in deionized water to prepare a sodium hydroxide / urea mixed solution, and the mixed solution was cooled at -18℃ for 30 min.

[0015] Immerse the cleaned cotton fabric in the mixed solution and treat it at -18℃ for 120-180 minutes. Then remove the fabric, wash it with deionized water, and dry it.

[0016] In a preferred embodiment of the method described in this invention, the sodium hydroxide / urea mixed solution contains sodium hydroxide with a mass fraction of 2% to 6% and urea with a mass fraction of 3% to 9%.

[0017] In a preferred embodiment of the method described in this invention, the preparation of the anhydrous ethanol solution of zinc salt and silane coupling agent includes,

[0018] After the zinc salt and silane coupling agent are mixed evenly with anhydrous ethanol, the mixture is added to a three-necked flask and refluxed in a water bath at 80-85°C for 1-2 hours with stirring. After reflux, the solution is cooled to room temperature in ice water to obtain an anhydrous ethanol solution of zinc salt and silane coupling agent.

[0019] In a preferred embodiment of the method described in this invention, the zinc salt comprises zinc acetate dihydrate, and the silane coupling agent comprises γ-aminopropyltriethoxysilane.

[0020] In a preferred embodiment of the method described in this invention, the ratio of the zinc salt to the silane coupling agent is 5–10 mmol: 1–3 mL.

[0021] In a preferred embodiment of the method described in this invention, the ultrasonic reaction has a reaction time of 20-30 minutes and an ultrasonic power of 100W.

[0022] In a preferred embodiment of the method described in this invention, the modified cotton fabric is obtained by drying, wherein the drying temperature is 60–100°C.

[0023] As a preferred embodiment of the method described in this invention, the dyeing of textiles using honeysuckle extract includes,

[0024] Prepare an aqueous solution of honeysuckle extract with a mass fraction of 1-5%, immerse the modified cotton fabric in it, and after dyeing, wash it with deionized water 3-5 times and dry it.

[0025] In a preferred embodiment of the method described in this invention, the staining process includes a staining temperature of 80–90°C and a staining time of 30–60 min.

[0026] Beneficial effects of this invention:

[0027] (1) This invention provides a method for improving the color depth of textiles dyed with honeysuckle extract. The method first pre-treats cotton fabrics with sodium hydroxide / urea, causing the surface of the cotton fabric fibers to swell violently or even partially dissolve. After washing and drying, the fabrics are immersed in anhydrous ethanol containing zinc salt and silane coupling agent. Through in-situ reaction, crystal precipitates are formed on the fabric. At the same time, the silane coupling agent is used to improve the binding strength of the crystal precipitate and the hydroxyl groups on cellulose, and to impart a certain positive charge to cellulose, thereby improving the color depth and color fastness of textiles dyed with honeysuckle extract.

[0028] (2) This invention utilizes a sodium hydroxide / urea mixed solution to micro-dissolve cellulose fibers, which are readily available and inexpensive; it employs the method of forming crystal precipitates in situ inside the micro-dissolved cotton fabric to improve its bonding strength with textiles; and it utilizes silane coupling agents to change the charge of the fabric and improve the color depth of honeysuckle extract on textiles. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0030] Figure 1 These are photographs of the dyed fabrics before and after washing in the embodiments and comparative examples of the present invention. Detailed Implementation

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the examples in the specification.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0034] Example 1

[0035] (1) Dissolve sodium hydroxide and urea in deionized water to prepare a sodium hydroxide / urea mixed solution, wherein the mass fraction of sodium hydroxide is 2% and the mass fraction of urea is 3%. Cool the mixed solution at -18℃ for 30 min, immerse the cleaned cotton fabric in the mixed solution, treat it at -18℃ for 120 min, then take out the fabric, wash it with deionized water, dry it, and set it aside.

[0036] (2) Mix 5 mmol zinc acetate dihydrate and 1 mL γ-aminopropyltriethoxysilane with 50 mL anhydrous ethanol and add it to a three-necked flask. Reflux the solution for 1 h under stirring in a water bath at 85 °C. After reflux, pour the solution into a beaker and cool it to room temperature in ice water. Add the fabric treated in step (1).

[0037] Under ice bath conditions, the ultrasonic reaction was carried out for 20 minutes at an ultrasonic power of 100W. After the reaction was completed, 1 mL of deionized water was added, and the reaction was carried out at room temperature for 30 minutes. The mixture was washed three times with deionized water and dried at 60℃ for later use.

[0038] (3) Prepare a 1% honeysuckle extract aqueous solution, immerse the fabric treated in step (2) in it, dye it at 80°C for 60 min, wash it three times with deionized water after dyeing, and dry it at 60°C.

[0039] Comparative Example 1-1 (without sodium hydroxide / urea treatment)

[0040] (1) Mix 5 mmol zinc acetate dihydrate and 1 mL γ-aminopropyltriethoxysilane with 50 mL anhydrous ethanol and add to a three-necked flask. Reflux the mixture in a water bath at 85 °C for 1 h with stirring. After reflux, pour the solution into a beaker and cool it to room temperature in ice water. Add untreated cotton fabric. Sonicate the mixture in an ice bath for 20 min at 100 W. After the reaction, add 1 mL deionized water and react at room temperature for 30 min. Wash the mixture three times with deionized water and dry it at 60 °C for later use.

[0041] (2) Prepare a 1% honeysuckle extract aqueous solution, immerse the fabric treated in step (1) in it, dye it at 80°C for 60 min, wash it three times with deionized water after dyeing, and dry it at 60°C.

[0042] Comparative Examples 1-2 (without silane coupling agent)

[0043] (1) Dissolve sodium hydroxide and urea in deionized water to prepare a sodium hydroxide / urea mixed solution, wherein the mass fraction of sodium hydroxide is 2% and the mass fraction of urea is 3%. Cool the mixed solution at -18℃ for 30 min, immerse the cleaned cotton fabric in the mixed solution, treat it at -18℃ for 120 min, then take out the fabric, wash it with deionized water, dry it, and set it aside.

[0044] (2) Mix 5 mmol zinc acetate dihydrate with 50 ml anhydrous ethanol and add it to a three-necked flask. Reflux the mixture for 1 h under stirring in a water bath at 85 °C. After reflux, pour the solution into a beaker and cool it to room temperature in ice water. Add the fabric treated in step (1). Under ice bath conditions, sonicate the mixture for 20 min at an ultrasonic power of 100 W. After the reaction, add 1 mL of deionized water and react at room temperature for 30 min. Wash the fabric three times with deionized water and dry it at 60 °C for later use.

[0045] (3) Prepare a 1% honeysuckle extract aqueous solution, immerse the fabric treated in step (2) in it, dye it at 80°C for 60 min, wash it three times with deionized water after dyeing, and dry it at 60°C.

[0046] Comparative Examples 1-3 (without the second step)

[0047] (1) Dissolve sodium hydroxide and urea in deionized water to prepare a sodium hydroxide / urea mixed solution, wherein the mass fraction of sodium hydroxide is 2% and the mass fraction of urea is 3%. Cool the mixed solution at -18℃ for 30 min, immerse the cleaned cotton fabric in the mixed solution, treat it at -18℃ for 120 min, then take out the fabric, wash it with deionized water, dry it, and set it aside.

[0048] (2) Prepare a 1% honeysuckle extract aqueous solution, immerse the fabric treated in step (1) in it, dye it at 80°C for 60 min, wash it three times with deionized water after dyeing, and dry it at 60°C.

[0049] Comparative Examples 1-4 (Stirring Treatment)

[0050] (1) Dissolve sodium hydroxide and urea in deionized water to prepare a sodium hydroxide / urea mixed solution, wherein the mass fraction of sodium hydroxide is 2% and the mass fraction of urea is 3%. Cool the mixed solution at -18℃ for 30 min, immerse the cleaned cotton fabric in the mixed solution, treat it at -18℃ for 120 min, then take out the fabric, wash it with deionized water, dry it, and set it aside.

[0051] (2) Mix 5 mmol zinc acetate dihydrate and 1 mL γ-aminopropyltriethoxysilane with 50 mL anhydrous ethanol and add to a three-necked flask. Reflux for 1 h under stirring in an 85 °C water bath. After reflux, pour the solution into a beaker and cool to room temperature in ice water. Add the fabric treated in step (1). Stir the reaction for 20 min under ice bath conditions at a stirring speed of 500 r / min. After the reaction, add 1 mL deionized water and react at room temperature for 30 min. Wash three times with deionized water and dry at 60 °C for later use.

[0052] (3) Prepare a 1% honeysuckle extract aqueous solution, immerse the fabric treated in step (2) in it, dye it at 80°C for 60 min, wash it three times with deionized water after dyeing, and dry it at 60°C.

[0053] Comparative Examples 1-5 (Direct Staining)

[0054] Prepare a 1% (w / w) aqueous solution of honeysuckle extract, immerse the cotton fabric in it, dye it at 80℃ for 60 minutes, wash it three times with deionized water after dyeing, and dry it at 60℃.

[0055] Comparative Examples 1-6 (without added zinc salt)

[0056] (1) Dissolve sodium hydroxide and urea in deionized water to prepare a sodium hydroxide / urea mixed solution, wherein the mass fraction of sodium hydroxide is 2% and the mass fraction of urea is 3%. Cool the mixed solution at -18℃ for 30 min, immerse the cleaned cotton fabric in the mixed solution, treat it at -18℃ for 120 min, then take out the fabric, wash it with deionized water, dry it, and set it aside.

[0057] (2) Mix 1 mL of γ-aminopropyltriethoxysilane with 50 mL of anhydrous ethanol and add it to a three-necked flask. Reflux the mixture for 1 h under stirring in a water bath at 85 °C. After reflux, pour the solution into a beaker and cool it in ice water. Add the fabric treated in step (1) to the beaker and cool it to a low temperature. Under ice bath conditions, sonicate the fabric for 20 min at an ultrasonic power of 100 W. After the reaction, add 1 mL of deionized water and react at room temperature for 30 min. Wash the fabric three times with deionized water and dry it at 60 °C for later use.

[0058] (3) Prepare a 1% honeysuckle extract aqueous solution, immerse the fabric treated in step (2) in it, dye it at 80°C for 60 min, wash it three times with deionized water after dyeing, and dry it at 60°C.

[0059] Comparative Examples 1-7 (15 mmol zinc acetate)

[0060] (1) Dissolve sodium hydroxide and urea in deionized water to prepare a sodium hydroxide / urea mixed solution, wherein the mass fraction of sodium hydroxide is 2% and the mass fraction of urea is 3%. Cool the mixed solution at -18℃ for 30 min, immerse the cleaned cotton fabric in the mixed solution, treat it at -18℃ for 120 min, then take out the fabric, wash it with deionized water, dry it, and set it aside.

[0061] (2) Mix 15 mmol zinc acetate dihydrate and 1 mL γ-aminopropyltriethoxysilane with 50 mL anhydrous ethanol and add to a three-necked flask. Reflux for 1 h under stirring in a water bath at 85 °C. After reflux, pour the solution into a beaker and cool it in ice water. Add the fabric treated in step (1) to the beaker and cool it to a low temperature. Under ice bath conditions, sonicate for 20 min at an ultrasonic power of 100 W. After the reaction, add 1 mL of deionized water and react at room temperature for 30 min. Wash with deionized water 3 times and dry at 60 °C for later use.

[0062] (3) Prepare a 1% honeysuckle extract aqueous solution, immerse the fabric treated in step (2) in it, dye it at 80°C for 60 min, wash it three times with deionized water after dyeing, and dry it at 60°C.

[0063] Comparative Examples 1-8 (5 mL γ-aminopropyltriethoxysilane)

[0064] (1) Dissolve sodium hydroxide and urea in deionized water to prepare a sodium hydroxide / urea mixed solution, wherein the mass fraction of sodium hydroxide is 2% and the mass fraction of urea is 3%. Cool the mixed solution at -18℃ for 30 min, immerse the cleaned cotton fabric in the mixed solution, treat it at -18℃ for 120 min, then take out the fabric, wash it with deionized water, dry it, and set it aside.

[0065] (2) Mix 5 mmol zinc acetate dihydrate and 5 mL γ-aminopropyltriethoxysilane with 50 mL anhydrous ethanol and add the mixture to a three-necked flask. Reflux the mixture in a water bath at 85 °C for 1 h with stirring. After reflux, pour the solution into a beaker and cool the beaker in ice water.

[0066] The fabric treated in step (1) was added to a beaker and cooled to a low temperature. Under ice bath conditions, it was ultrasonically reacted for 20 minutes with an ultrasonic power of 100W. After the reaction was completed, 5mL of deionized water was added and reacted at room temperature for 30 minutes. The fabric was washed three times with deionized water and dried at 60℃ for later use.

[0067] (3) Prepare a 1% honeysuckle extract aqueous solution, immerse the fabric treated in step (2) in it, dye it at 80°C for 60 min, wash it three times with deionized water after dyeing, and dry it at 60°C.

[0068] Example 2

[0069] (1) Dissolve sodium hydroxide and urea in deionized water to prepare a sodium hydroxide / urea mixed solution, wherein the mass fraction of sodium hydroxide is 6% and the mass fraction of urea is 9%. Cool the mixed solution at -18℃ for 30 min, immerse the cleaned cotton fabric in the mixed solution, treat it at -18℃ for 180 min, then take out the fabric, wash it with deionized water, dry it, and set it aside.

[0070] (2) Mix 10 mmol zinc acetate dihydrate and 3 mL γ-aminopropyltriethoxysilane with 50 mL anhydrous ethanol and add to a three-necked flask. Reflux for 2 h under stirring in an 80 °C water bath. After reflux, pour the solution into a beaker and cool to room temperature in ice water. Add the fabric treated in step (1). Under ice bath conditions, sonicate for 30 min at an ultrasonic power of 100 W. After the reaction, add 3 mL deionized water and react at room temperature for 60 min. Wash with deionized water 5 times and dry at 100 °C for later use.

[0071] (3) Prepare a 5% honeysuckle extract aqueous solution, immerse the fabric treated in step (2) in it, dye it at 90°C for 30 minutes, wash it with deionized water 5 times after dyeing, and dry it at 100°C.

[0072] Example 3

[0073] (1) Dissolve sodium hydroxide and urea in deionized water to prepare a sodium hydroxide / urea mixed solution, wherein the mass fraction of sodium hydroxide is 4% and the mass fraction of urea is 6%. Cool the mixed solution at -18℃ for 30 min, immerse the cleaned cotton fabric in the mixed solution, treat it at -18℃ for 160 min, then take out the fabric, wash it with deionized water, dry it, and set it aside.

[0074] (2) Mix 7 mmol zinc acetate dihydrate and 2 mL γ-aminopropyltriethoxysilane with 50 mL anhydrous ethanol and add to a three-necked flask. Reflux for 1.5 h under stirring in a water bath at 82 °C. After reflux, pour the solution into a beaker and cool to room temperature in ice water. Add the fabric treated in step (1). Under ice bath conditions, sonicate for 25 min at an ultrasonic power of 100 W. After the reaction, add 2 mL deionized water and react at room temperature for 40 min. Wash with deionized water 4 times and dry at 70 °C for later use.

[0075] (3) Prepare a 3% honeysuckle extract aqueous solution, immerse the fabric treated in step (2) in it, dye it at 85°C for 40 minutes, wash it with deionized water 4 times after dyeing, and dry it at 70°C.

[0076] Example 4

[0077] (1) Dissolve sodium hydroxide and urea in deionized water to prepare a sodium hydroxide / urea mixed solution, wherein the mass fraction of sodium hydroxide is 5% and the mass fraction of urea is 7%. Cool the mixed solution at -18℃ for 30 min, immerse the cleaned cotton fabric in the mixed solution, treat it at -18℃ for 140 min, then take out the fabric, wash it with deionized water, dry it, and set it aside.

[0078] (2) Mix 8 mmol zinc acetate dihydrate and 2.5 mL γ-aminopropyltriethoxysilane with 50 mL anhydrous ethanol and add to a three-necked flask. Reflux for 1.2 h under stirring in a water bath at 84 °C. After reflux, pour the solution into a beaker and cool to room temperature in ice water. Add the fabric treated in step (1). Under ice bath conditions, sonicate for 28 min at an ultrasonic power of 100 W. After the reaction, add 2.5 mL deionized water and react at room temperature for 50 min. Wash with deionized water and dry for later use.

[0079] (3) Prepare a 4% honeysuckle extract aqueous solution, immerse the fabric treated in step (2) in it, dye it at 82°C for 50 minutes, wash it with deionized water 4 times after dyeing, and dry it at 80°C.

[0080] Color parameter test: Fold the dyed fabric in half twice, and use a datacolor tester to measure the K / S value of the cotton fabric under the test conditions of D65 light source and 10° observation angle. Test each sample at different positions 4 times and take the average value.

[0081] Washability test: The washability test was conducted according to the washing conditions in GB / T 3921.3-1997. Soap solution was used as the detergent. The cotton fabric was placed in a container and the soap solution was prepared with 5g soap and 2g anhydrous sodium carbonate per liter of water, so that the bath ratio was 50:1. The fabric was stirred and washed for 30 minutes at 60℃.

[0082] Remove the cotton fabric and wash it twice with deionized water;

[0083] Finally, rinse with tap water for 10 minutes, squeeze out the water, and air dry at room temperature.

[0084] See before and after photos of the dyed fabric after washing. Figure 1 The test results are as follows:

[0085] Table 1 K / S values ​​of dyed fabrics

[0086]

[0087]

[0088] As can be seen from Table 1, the color depth (K / S value) of the fabric obtained by the present invention is significantly higher than that of the untreated fabric (Comparative Examples 1-5), and the color deepening effect is obvious. At low temperature, the sodium hydroxide / urea mixed solution can break the hydrogen bonds between cellulose fiber molecules, causing cellulose to swell, which is conducive to the penetration of zinc salt and silane coupling agent into the fabric. Therefore, the color depth of the fabric obtained in Example 1 is higher than that in Comparative Examples 1-1.

[0089] The aminosilane coupling agent selected in this invention can react with the hydroxyl groups on cellulose fibers to impart a certain positive charge, which is beneficial to the dyeing of textiles by honeysuckle extract. Therefore, the color depth of the fabric obtained in Example 1 is higher than that in Comparative Examples 1-2.

[0090] In Comparative Examples 1-3, the fabrics were not treated with zinc salts and silane coupling agents, and the color depth of the dyed fabrics was similar to that of Comparative Examples 1-5.

[0091] The cavitation effect of ultrasound facilitates the penetration of substances into the fiber interior; therefore, the color depth of the fabric obtained in Example 1 is also higher than that in Comparative Examples 1-4.

[0092] Comparative Examples 1-6 fabrics, without added zinc salts, had a lighter color depth. Comparative Examples 1-7 fabrics, with excessive zinc salts, were slightly darker than Example 1, and had a lower K / S value after washing. Comparative Examples 1-8, with more silane coupling agent added, resulted in very dark fabrics with a greenish tint, but significant color loss during washing, and a lower K / S value after washing compared to Example 1. Furthermore, Comparative Examples 1-8 produced a white, viscous precipitate adhering to the fabric surface during the washing process, leading to uneven dyeing that was difficult to remove. In summary, Comparative Examples 1-7 and 1-8 indicate that the ratio of zinc salt to silane coupling agent is optimal.

[0093] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the present invention.

Claims

1. A method for improving the color depth of textiles dyed with honeysuckle extract, characterized in that: include, Sodium hydroxide and urea are dissolved in deionized water to prepare a sodium hydroxide / urea mixed solution. The mixed solution is cooled at -18°C for 30 minutes. Cleaned cotton fabric is immersed in the mixed solution and treated at -18°C for 120-180 minutes. The fabric is then removed, washed with deionized water, and dried to obtain the pretreated cotton fabric. The sodium hydroxide / urea mixed solution contains 2%-6% sodium hydroxide and 3%-9% urea by mass. Preparation of an anhydrous ethanol solution of zinc salt and silane coupling agent: After mixing zinc salt and silane coupling agent with anhydrous ethanol evenly, the mixture is added to a three-necked flask and refluxed under stirring in a water bath at 80-85°C for 1-2 hours. After reflux, the solution is cooled to room temperature in ice water to obtain an anhydrous ethanol solution of zinc salt and silane coupling agent. The zinc salt is zinc acetate dihydrate, and the silane coupling agent is γ-aminopropyltriethoxysilane. The ratio of zinc salt to silane coupling agent is 5-10 mmol: 1-3 mL. The pretreated cotton fabric was immersed in an anhydrous ethanol solution of zinc salt and silane coupling agent and ultrasonically reacted under ice bath conditions. After the reaction was completed, deionized water was added and reacted at room temperature. The modified cotton fabric was obtained by washing and drying with deionized water. The ultrasonic reaction time was 20-30 min and the ultrasonic power was 100 W. Textiles are dyed using honeysuckle extract: Prepare an aqueous solution of honeysuckle extract with a mass fraction of 1-5%, immerse the modified cotton fabric, and after dyeing, wash with deionized water 3-5 times and dry.

2. The method as described in claim 1, characterized in that: The modified cotton fabric is obtained by drying, wherein the drying temperature is 60~100℃.

3. The method as described in claim 1, characterized in that: The staining process involves a staining temperature of 80-90℃ and a staining time of 30-60 minutes.

Images