Preparation method of polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric

Abstract

The invention provides a preparation method of a polyphenol compound / Ag < + > / PEG-MoS2 modified antibacterial linen fabric, and the preparation method comprises the following steps: S1, carrying out low-temperature plasma treatment on the linen fabric for a certain time under certain power and vacuum degree; s2, rapidly immersing the treated linen fabric in a solution containing gallic acid, and carrying out a reaction at a certain temperature to obtain a surface-modified linen fabric; s3, adding the Ag < + > / PEG-MoS2 loaded particles into water to prepare a linen fabric pretreatment solution; s4, the surface modified linen fabric prepared in the step S2 is soaked twice and rolled twice in a pretreatment solution, drying and heat setting treatment are conducted, and the antibacterial linen fabric is obtained. According to the polyphenol compound / Ag < + > / PEG-MoS2 modified antibacterial linen fabric, MoS2 is arranged on the linen fabric, and the antibacterial effect of the linen fabric is improved through a near-infrared antibacterial technology.

Description

Technical Field

[0001] The invention relates to the field of functional fabric finishing, and in particular to a method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric. Background Art

[0002] Flax fiber has natural antibacterial properties, which is mainly attributed to its rich lignin and hemicellulose components, which can inhibit the metabolic activity of bacteria and destroy their cell membrane structure. In addition, polar groups such as hydroxyl and carboxyl groups on the surface of flax fiber can also interact with anions on the bacterial cell wall to inactivate the bacteria. Although linen fabrics have natural antibacterial properties, their antibacterial effects may not be obvious enough and need to be improved through some improvement measures. Hemp fibers themselves contain antibacterial components, such as lignin, cellulose, hemicellulose and tannin, but the antibacterial effects of these components may not be sufficient to meet certain application requirements. Therefore, the antibacterial properties of hemp fibers can be optimized by selecting hemp fiber varieties with strong antibacterial ability, increasing the content of cellulose and lignin, and using fine fiberization and long fiberization technologies; in addition, degumming, dye types and dye auxiliaries in the dyeing and finishing process have an impact on the antibacterial properties of hemp fibers. By improving these process steps, the loss of antibacterial components during the production and processing of hemp fibers can be effectively reduced, and the antibacterial properties of hemp fabrics can be further improved; or, the surface structure and properties of hemp fibers can be changed by chemical or physical methods to make them have stronger antibacterial activity. For example, technologies such as plasma treatment, corona treatment and chemical grafting can be used to enhance the antibacterial properties of hemp fibers; or antibacterial agents such as silver ions, copper ions, quaternary ammonium salts, etc. can be added to hemp fabrics to give hemp fabrics additional antibacterial and antimicrobial properties. These antimicrobial agents can be applied to linen fabrics by dipping, spraying or padding. Nanomaterials, due to their high specific surface area and antimicrobial properties, can be combined with linen fibers by modification, coating or compounding, significantly enhancing the antibacterial and antimicrobial capabilities of linen fabrics. Nanomaterials such as nanosilver and nanozinc oxide show excellent antibacterial effects. Near-infrared sterilization technology is a method that uses near-infrared light to excite materials to generate heat energy, thereby achieving rapid sterilization. The advantages of this technology are that near-infrared light has good tissue penetration, can complete the sterilization process in a shorter time, and the light source is easy to obtain. Near-infrared sterilization technology has potential application value in the fields of medical devices, water treatment, and food preservation. At present, there has been no research on combining linen fabrics with near-infrared sterilization technology to improve the antibacterial effect of linen fabrics. Summary of the invention

[0003] Technical problem to be solved: The purpose of the present invention is to provide a polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, MoS2 is added to the linen fabric, and the antibacterial effect of the linen fabric is improved by near-infrared antibacterial technology.

[0004] Technical solution: A method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps: S1. treating the linen fabric with low-temperature plasma for a certain period of time at a certain power and vacuum degree; S2. The treated linen fabric is quickly immersed in a solution containing gallic acid, and reacted at a certain temperature to obtain a surface-modified linen fabric; S3. The Ag + / PEG-MoS2 particles were added to water to prepare a linen fabric pretreatment solution; S4. The surface-modified linen fabric prepared in step S2 is immersed twice in the pretreatment solution and rolled twice, and then dried and heat-set to obtain the antibacterial linen fabric. Preferably, the conditions for the plasma treatment in step S1 are: discharge power of 120-200 W, and treatment time of 30-150 s. Preferably, in step S2, the temperature is 60-80° C. and the time is 30-60 min. Preferably, the preparation method of the Ag+ / PEG-MoS2 loaded particles comprises the following steps: S11. Adding polyethylene glycol to an aqueous ethanol solution, mixing and stirring to obtain a polyethylene glycol solution; S12. Add ammonium tetrathiomolybdate to deionized water, mix and stir to obtain an ammonium tetrathiomolybdate solution; S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12, and after ultrasonic homogenization, hydrazine hydrate is added, and then ultrasonic homogenization is performed, and finally the mixture is reacted in a high pressure reactor to obtain PEG-MoS2 particles; S14. Add PEG-MoS2 to the silver nitrate solution, and after sufficient adsorption, obtain Ag+ / PEG-MoS2 loaded particles. Preferably, the concentration of the polyethylene glycol solution in step S11 is 1-3 wt %. Preferably, the concentration of the ammonium tetrathiomolybdate solution in step S12 is 0.2-0.8 wt %. Preferably, in step S13, the polyethylene glycol solution and the ammonium tetrathiomolybdate solution are mixed in equal volumes, the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 8-12:1, the reaction temperature in the autoclave is 180-210° C., and the reaction time is 6-12 h. Preferably, the concentration of the silver nitrate solution in step S14 is 0.2-0.6 mol / L. Preferably, the concentration of the linen fabric pretreatment solution in step S3 is 2.2-3.5 wt %. Preferably, the rolling margin in step S4 is 100%-110%. Beneficial effects: The polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric of the present invention has the following advantages: 1. In the present invention, MoS2 is placed on the surface of the fabric, and polyethylene glycol is used to modify MoS2. The hydrogen bond interaction between the phenolic hydroxyl group (-OH) in gallic acid and the ether bond (-O-) in polyethylene glycol is used to successfully load MoS2 onto the surface of the linen fabric, thereby improving the sterilization effect; 2. In the present invention, silver ions are adsorbed on the surface of the prepared MoS2, and the silver ions can be complexed with gallic acid on the fiber surface to form a uniform antibacterial network on the fabric surface; 3. The Ag+ / PEG-MoS2 particles of the present invention have strong bactericidal properties and can use near-infrared as a "trigger switch". During the application process, they can effectively inhibit bacteria through photothermal effects. Compared with traditional bactericidal finishing, they can reduce the accumulation of bactericides and improve the bactericidal effect. DETAILED DESCRIPTION The present invention will be further described below in conjunction with embodiments, which are explanations of the present invention and are not limited to the following embodiments: Example 1 A method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps: S1. The linen fabric was subjected to low-temperature plasma treatment at a discharge power of 120 W and a vacuum pressure of 30 Pa for a treatment time of 150 s; S2. The treated linen fabric is quickly immersed in a solution containing gallic acid and reacted at a temperature of 80° C. for 30 min to obtain a surface-modified linen fabric; S3. The Ag + / PEG-MoS2 particles were added to water to prepare a 2.2wt% linen fabric pretreatment solution; S4. The surface modified linen fabric prepared in step S2 was immersed twice in a pretreatment solution and rolled twice, the rolling rate was 100%, and then dried and heat-set to obtain an antibacterial linen fabric; Wherein, the preparation method of the Ag+ / PEG-MoS2 loaded particles comprises the following steps: S11. Add polyethylene glycol to the ethanol aqueous solution, mix and stir evenly to obtain a polyethylene glycol solution with a concentration of 1 wt%; S12. The ammonium tetrathiomolybdate was added to deionized water, mixed and stirred to obtain a concentration of 0.2wt% ammonium tetrathiomolybdate solution; S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12 and mixed in equal volumes. After ultrasonic homogenization, hydrazine hydrate is added, and the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 8:1. Ultrasonic homogenization is performed again, and finally the mixture is reacted in an autoclave at a reaction temperature of 180° C. for 12 h to obtain PEG-MoS2 particles. S14. Add PEG-MoS2 to a silver nitrate solution with a concentration of 0.6 mol / L, and after sufficient adsorption, obtain Ag+ / PEG-MoS2 loaded particles. Example 2 A method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps: S1. The linen fabric was subjected to low-temperature plasma treatment at a discharge power of 200 W and a vacuum pressure of 30 Pa for a treatment time of 30 s; S2. The treated linen fabric is quickly immersed in a solution containing gallic acid and reacted at a temperature of 60° C. for 60 min to obtain a surface-modified linen fabric; S3. The Ag + / PEG-MoS2 particles were added to water to prepare a 3.5wt% linen fabric pretreatment solution; S4. The surface modified linen fabric prepared in step S2 was immersed twice in a pretreatment solution and rolled twice, the rolling rate was 110%, and then dried and heat-set to obtain an antibacterial linen fabric; Wherein, the preparation method of the Ag+ / PEG-MoS2 loaded particles comprises the following steps: S11. Add polyethylene glycol to the ethanol aqueous solution, mix and stir evenly to obtain a polyethylene glycol solution with a concentration of 3 wt%; S12. The ammonium tetrathiomolybdate was added to deionized water, mixed and stirred to obtain a concentration of 0.8wt% ammonium tetrathiomolybdate solution; S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12 and mixed in equal volumes. After ultrasonic homogenization, hydrazine hydrate is added, and the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 12:1. Ultrasonic homogenization is performed again, and finally the mixture is reacted in a high-pressure reactor at a reaction temperature of 210° C. for 6 hours to obtain PEG-MoS2 particles. S14. Add PEG-MoS2 to a 0.2 mol / L silver nitrate solution, and after sufficient adsorption, obtain Ag+ / PEG-MoS2 loaded particles. Example 3 A method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps: S1. The linen fabric was subjected to low-temperature plasma treatment at a discharge power of 150 W and a vacuum pressure of 30 Pa for a treatment time of 120 s; S2. The treated linen fabric is quickly immersed in a solution containing gallic acid and reacted at a temperature of 75° C. for 40 min to obtain a surface-modified linen fabric; S3. The Ag + / PEG-MoS2 particles were added to water to prepare a 2.6wt% linen fabric pretreatment solution; S4. The surface modified linen fabric prepared in step S2 was immersed twice in a pretreatment solution and rolled twice, the rolling rate was 110%, and then dried and heat-set to obtain an antibacterial linen fabric; Wherein, the preparation method of the Ag+ / PEG-MoS2 loaded particles comprises the following steps: S11. Add polyethylene glycol to the ethanol aqueous solution, mix and stir evenly to obtain a polyethylene glycol solution with a concentration of 2.5wt%; S12. The ammonium tetrathiomolybdate was added to deionized water, mixed and stirred to obtain a concentration of 0.4wt% ammonium tetrathiomolybdate solution; S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12 and mixed in equal volumes. After ultrasonic homogenization, hydrazine hydrate is added, and the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 9:1. Ultrasonic homogenization is performed again, and finally the mixture is reacted in a high-pressure reactor at a reaction temperature of 190° C. for 10 hours to obtain PEG-MoS2 particles. S14. Add PEG-MoS2 to a 0.3 mol / L silver nitrate solution, and after sufficient adsorption, obtain Ag+ / PEG-MoS2 loaded particles. Example 4 A method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps: S1. The linen fabric was subjected to low-temperature plasma treatment at a discharge power of 180 W and a vacuum pressure of 30 Pa for a treatment time of 80 s; S2. The treated linen fabric is quickly immersed in a solution containing gallic acid and reacted at a temperature of 65° C. for 50 min to obtain a surface-modified linen fabric; S3. The Ag + / PEG-MoS2 particles were added to water to prepare a 3.1wt% linen fabric pretreatment solution; S4. The surface modified linen fabric prepared in step S2 was immersed twice in a pretreatment solution and rolled twice, the rolling rate was 100%, and then dried and heat-set to obtain an antibacterial linen fabric; Wherein, the preparation method of the Ag+ / PEG-MoS2 loaded particles comprises the following steps: S11. Add polyethylene glycol to the ethanol aqueous solution, mix and stir evenly to obtain a polyethylene glycol solution with a concentration of 1.5wt%; S12. The ammonium tetrathiomolybdate was added to deionized water, mixed and stirred to obtain a concentration of 0.7wt% ammonium tetrathiomolybdate solution; S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12, and the mixture is mixed in equal volumes. After ultrasonic homogenization, hydrazine hydrate is added, and the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 11:1. The mixture is ultrasonically homogenized again, and finally the mixture is reacted in an autoclave at a reaction temperature of 200° C. for 8 hours to obtain PEG-MoS2 particles. S14. Add PEG-MoS2 to a 0.5 mol / L silver nitrate solution, and after sufficient adsorption, obtain Ag+ / PEG-MoS2 loaded particles. Example 5 A method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps: S1. The linen fabric was subjected to low-temperature plasma treatment at a discharge power of 160 W and a vacuum pressure of 30 Pa for a treatment time of 100 s; S2. The treated linen fabric is quickly immersed in a solution containing gallic acid and reacted at a temperature of 70° C. for 45 min to obtain a surface-modified linen fabric; S3. The Ag + / PEG-MoS2 particles were added to water to prepare a 2.8wt% linen fabric pretreatment solution; S4. The surface modified linen fabric prepared in step S2 was immersed twice in a pretreatment solution and rolled twice, the rolling rate was 100%, and then dried and heat-set to obtain an antibacterial linen fabric; Wherein, the preparation method of the Ag+ / PEG-MoS2 loaded particles comprises the following steps: S11. Add polyethylene glycol to the ethanol aqueous solution, mix and stir evenly to obtain a polyethylene glycol solution with a concentration of 2 wt%; S12. The ammonium tetrathiomolybdate was added to deionized water, mixed and stirred to obtain a concentration of 0.6wt% ammonium tetrathiomolybdate solution; S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12, and the mixture is mixed in equal volumes. After ultrasonic homogenization, hydrazine hydrate is added, and the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 10:1. The mixture is ultrasonically homogenized again, and finally the mixture is reacted in an autoclave at a reaction temperature of 200° C. for 8 hours to obtain PEG-MoS2 particles. S14. Add PEG-MoS2 to a 0.4 mol / L silver nitrate solution, and after sufficient adsorption, obtain Ag+ / PEG-MoS2 loaded particles. Comparative Example 1 A method for preparing polyphenol compound / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps: S1. The linen fabric was subjected to low-temperature plasma treatment at a discharge power of 160 W and a vacuum pressure of 30 Pa for a treatment time of 100 s; S2. The treated linen fabric is quickly immersed in a solution containing gallic acid and reacted at a temperature of 70° C. for 45 min to obtain a surface-modified linen fabric; S3. The PEG-MoS2 particles were added to water to prepare a 2.8wt% linen fabric pretreatment solution; S4. The surface modified linen fabric prepared in step S2 was immersed twice in a pretreatment solution and rolled twice, the rolling rate was 100%, and then dried and heat-set to obtain an antibacterial linen fabric; Wherein, the preparation method of the PEG-MoS2 particles comprises the following steps: S11. Add polyethylene glycol to the ethanol aqueous solution, mix and stir evenly to obtain a polyethylene glycol solution with a concentration of 2 wt%; S12. The ammonium tetrathiomolybdate was added to deionized water, mixed and stirred to obtain a concentration of 0.6wt% ammonium tetrathiomolybdate solution; S13. Add the polyethylene glycol solution prepared in S11 to the ammonium tetrathiomolybdate solution prepared in S12, mix them in equal volumes, add hydrazine hydrate after ultrasonic homogenization, the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 10:1, ultrasonic homogenize again, and finally react in a high-pressure reactor at a reaction temperature of 200°C for 8 hours to obtain PEG-MoS2 particles. Comparative Example 2 A method for preparing Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps: S1. The linen fabric was subjected to low-temperature plasma treatment at a discharge power of 160 W and a vacuum pressure of 30 Pa for a treatment time of 100 s; S2. The Ag + / PEG-MoS2 particles were added to water to prepare a 2.8wt% linen fabric pretreatment solution; S3. The plasma-treated linen fabric prepared in step S1 is immersed twice in a pretreatment solution and rolled twice, with a rolling rate of 100%, and then dried and heat-set to obtain an antibacterial linen fabric; Wherein, the preparation method of the Ag+ / PEG-MoS2 loaded particles comprises the following steps: S11. Add polyethylene glycol to the ethanol aqueous solution, mix and stir evenly to obtain a polyethylene glycol solution with a concentration of 2 wt%; S12. The ammonium tetrathiomolybdate was added to deionized water, mixed and stirred to obtain a concentration of 0.6wt% ammonium tetrathiomolybdate solution; S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12, and the mixture is mixed in equal volumes. After ultrasonic homogenization, hydrazine hydrate is added, and the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 10:1. The mixture is ultrasonically homogenized again, and finally the mixture is reacted in an autoclave at a reaction temperature of 200° C. for 8 hours to obtain PEG-MoS2 particles. S14. Add PEG-MoS2 to a 0.4 mol / L silver nitrate solution, and after sufficient adsorption, obtain Ag+ / PEG-MoS2 loaded particles. Comparative Example 3 A method for preparing polyphenol compound / Ag+ modified antibacterial linen fabric, the preparation method comprising the following steps: S1. The linen fabric was subjected to low-temperature plasma treatment at a discharge power of 160 W and a vacuum pressure of 30 Pa for a treatment time of 100 s; S2. The treated linen fabric is quickly immersed in a solution containing gallic acid and reacted at a temperature of 70° C. for 45 min to obtain a surface-modified linen fabric; S3. Add silver nitrate to water to prepare a silver nitrate solution with a concentration of 0.4 mol / L; S4. The surface-modified linen fabric prepared in step S2 is immersed in the pretreatment solution twice and rolled twice, with the rolling rate being 100%, and then dried and heat-set to obtain the antibacterial linen fabric. Comparative Example 4 A method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps: S1. Wash and dry the linen fabric; S2. The treated linen fabric was immersed in a solution containing gallic acid and reacted at a temperature of 70° C. for 45 min to obtain a surface-modified linen fabric; S3. The Ag + / PEG-MoS2 particles were added to water to prepare a 2.8wt% linen fabric pretreatment solution; S4. The surface modified linen fabric prepared in step S2 was immersed twice in a pretreatment solution and rolled twice, the rolling rate was 100%, and then dried and heat-set to obtain an antibacterial linen fabric; Wherein, the preparation method of the Ag+ / PEG-MoS2 loaded particles comprises the following steps: S11. Add polyethylene glycol to the ethanol aqueous solution, mix and stir evenly to obtain a polyethylene glycol solution with a concentration of 2 wt%; S12. The ammonium tetrathiomolybdate was added to deionized water, mixed and stirred to obtain a concentration of 0.6wt% ammonium tetrathiomolybdate solution; S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12, and the mixture is mixed in equal volumes. After ultrasonic homogenization, hydrazine hydrate is added, and the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 10:1. The mixture is ultrasonically homogenized again, and finally the mixture is reacted in an autoclave at a reaction temperature of 200° C. for 8 hours to obtain PEG-MoS2 particles. S14. Add PEG-MoS2 to a 0.4 mol / L silver nitrate solution, and after sufficient adsorption, obtain Ag+ / PEG-MoS2 loaded particles. The samples in the embodiments and comparative examples were placed in culture dishes, sterilized at high temperature, and then grafted with bacterial suspensions. Then, they were exposed to near-infrared light for 10 minutes and cultured at 37°C for 18 hours. Finally, the bactericidal effect was evaluated by comparing the number of colonies in different embodiment groups and control groups. Table 1 shows the antibacterial effect of unwashed fabrics, and Table 2 shows the antibacterial effect of fabrics after washing 20 times according to national standards. Table 1 Table 2 Staphylococcus aureus inhibition rate % Escherichia coli inhibition rate % Candida albicans inhibition rate % Example 1 99.99 99.99 99.99 Example 2 99.99 99.99 99.99 Example 3 99.99 99.99 99.99 Example 4 99.99 99.99 99.99 Example 5 99.99 99.99 99.99 Comparative Example 1 75.61 78.21 81.23 Comparative Example 2 80.23 93.17 85.65 Comparative Example 3 94.23 95.63 95.65 Comparative Example 4 92.32 85.69 88.65 Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, characterized in that: The preparation method comprises the following steps: S1. treating the linen fabric with low-temperature plasma for a certain period of time at a certain power and vacuum degree; S2. The treated linen fabric is quickly immersed in a solution containing gallic acid, and reacted at a certain temperature to obtain a surface-modified linen fabric; S3. The Ag + / PEG-MoS2 particles were added to water to prepare a linen fabric pretreatment solution; S4. The surface-modified linen fabric prepared in step S2 is immersed twice in the pretreatment solution and rolled twice, and then dried and heat-set to obtain the antibacterial linen fabric.

2. The method for preparing the polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric according to claim 1, characterized in that: The conditions of the plasma treatment in step S1 are: discharge power of 120-200 W, and treatment time of 30-150 s.

3. The method for preparing the polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric according to claim 1, characterized in that: In step S2, the temperature is 60-80° C. and the time is 30-60 min.

4. The method for preparing the polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric according to claim 1, characterized in that: The preparation method of the Ag+ / PEG-MoS2-loaded particles comprises the following steps: S11. Adding polyethylene glycol to an aqueous ethanol solution, mixing and stirring to obtain a polyethylene glycol solution; S12. Add ammonium tetrathiomolybdate to deionized water, mix and stir to obtain an ammonium tetrathiomolybdate solution; S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12, and after ultrasonic homogenization, hydrazine hydrate is added, and then ultrasonic homogenization is performed, and finally the mixture is reacted in a high pressure reactor to obtain PEG-MoS2 particles; S14. Add PEG-MoS2 to the silver nitrate solution, and after sufficient adsorption, obtain Ag+ / PEG-MoS2 loaded particles.

5. The method for preparing the polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric according to claim 4, characterized in that: The concentration of the polyethylene glycol solution in step S11 is 1-3 wt %.

6. The method for preparing the polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric according to claim 4, characterized in that: The concentration of the ammonium tetrathiomolybdate solution in step S12 is 0.2-0.8 wt %.

7. The method for preparing the polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric according to claim 4, characterized in that: In step S13, the polyethylene glycol solution and the ammonium tetrathiomolybdate solution are mixed in equal volumes, the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 8-12:1, the reaction temperature in the autoclave is 180-210° C., and the reaction time is 6-12 hours.

8. The method for preparing the polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric according to claim 4, characterized in that: The concentration of the silver nitrate solution in step S14 is 0.2-0.6 mol / L.

9. The method for preparing the polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric according to claim 1, characterized in that: The concentration of the linen fabric pretreatment liquid in step S3 is 2.2-3.5 wt %.

10. The method for preparing the polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric according to claim 1, characterized in that: The rolling margin in step S4 is 100%-110%.

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