Preparation method of polyphenol compound / ag+ / peg-mos2 modified antibacterial linen fabric

Abstract

The application provides a preparation method of a polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, and the preparation method comprises the following steps: S1, linen fabric is subjected to low-temperature plasma treatment under a certain power and vacuum degree for a certain time; S2, the treated linen fabric is rapidly immersed in a solution containing gallic acid, and a reaction is carried out at a certain temperature to obtain surface-modified linen fabric; S3, Ag+ / PEG-MoS2 particles are added to water to prepare a linen fabric pretreatment solution; and S4, the surface-modified linen fabric prepared in the step S2 is soaked in the pretreatment solution twice and is rolled twice, and is subjected to drying and heat setting treatment to obtain antibacterial linen fabric. The polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric of the application arranges MoS2 on the linen fabric, and improves the antibacterial effect of the linen fabric through near-infrared antibacterial technology.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of functional fabric finishing, in particular to a preparation method of a polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric. BACKGROUND

[0002] Linen fibers have natural antibacterial properties, which are mainly attributed to their rich lignin and hemicellulose components, which can inhibit the metabolic activity of bacteria and destroy their cell membrane structure. In addition, the polar groups such as hydroxyl and carboxyl groups on the surface of the linen fibers can also interact with the anions on the cell wall of the bacteria, causing the bacteria to be inactivated.

[0003] Although linen fabrics have natural antibacterial properties, their antibacterial effect may not be obvious enough and needs to be improved through some improvement measures. Linen fibers themselves contain antibacterial components such as lignin, cellulose, hemicellulose, and tannin, but the antibacterial effect of these components may not be sufficient to meet certain application requirements. Therefore, methods such as selecting linen fiber varieties with strong antibacterial ability, increasing cellulose and lignin content, using fine fiberization and long fiberization technology, etc. can be used to optimize the antibacterial performance of linen fibers; in addition, the degumming, dye type and dyeing auxiliary in the dyeing and finishing process have an impact on the antibacterial performance of linen fibers. By improving these process steps, the loss of antibacterial components during the production and processing of linen fibers can be effectively reduced, further improving the antibacterial performance of linen fabrics; or the surface structure and properties of linen fibers can be changed through chemical or physical methods to make them have stronger antibacterial activity. For example, plasma treatment, corona treatment and chemical grafting technology can be used to enhance the antibacterial performance of linen fibers; or antibacterial agents such as silver ions, copper ions, quaternary ammonium salts, etc. can be added to linen fabrics to give them additional antibacterial properties. These antibacterial agents can be applied to linen fabrics through methods such as dipping, spraying or padding; nanomaterials can be combined with linen fibers through modification, coating or compounding due to their high specific surface area and antibacterial properties, significantly enhancing the antibacterial ability of linen fabrics. Nanosilver, nanometer zinc oxide and other nanomaterials show excellent antibacterial effect.

[0004] Near-infrared sterilization technology is a method that uses near-infrared light to excite materials to generate heat energy, thereby achieving rapid sterilization. The advantage of this technology is that near-infrared light has good tissue penetration and can complete the sterilization process in a short 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. There is no research on combining linen fabrics with near-infrared sterilization technology to improve the antibacterial effect of linen fabrics. SUMMARY

[0005] Technical problems to be solved: The purpose of the present application is to provide a kind of polyphenol compound / Ag+ / PEG-MoS2 Modified antibacterial linen fabric, MoS2 finishing is arranged on linen fabric, and the antibacterial effect of linen fabric is improved by near-infrared antibacterial technology.

[0006] Technical scheme: A kind of polyphenol compound / Ag+ / PEG-MoS2 Modified antibacterial linen fabric preparation method, the preparation method includes the following steps:

[0007] S1. Linen fabric is treated by low temperature plasma, under certain power and vacuum degree, a certain time is treated;

[0008] S2. The linen fabric treated is quickly immersed in the solution containing gallic acid, and the surface modified linen fabric is obtained by reacting at a certain temperature;

[0009] S3. Ag+ / PEG-MoS2 particles are added to water to prepare a linen fabric pretreatment solution;

[0010] S4. The surface modified linen fabric prepared in step S2 is soaked and rolled twice in the pretreatment solution, and is treated by drying and heat setting to obtain an antibacterial linen fabric.

[0011] Preferably, the plasma treatment conditions in step S1 are as follows: discharge power is 120-200 W, and treatment time is 30-150 s.

[0012] Preferably, the temperature in step S2 is 60-80 DEG C, and the time is 30-60 min.

[0013] Preferably, the preparation method of the Ag+ / PEG-MoS2 particles includes the following steps:

[0014] S11. Polyethylene glycol is added to an aqueous ethanol solution, mixed and stirred uniformly to obtain a polyethylene glycol solution;

[0015] S12. Ammonium tetrathiomolybdate is added to deionized water, mixed and stirred uniformly to obtain an ammonium tetrathiomolybdate solution;

[0016] S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12, and then hydrazine hydrate is added after ultrasonic uniformity, and finally reacted in a high-pressure reaction kettle to obtain PEG-MoS2 particles;

[0017] S14. PEG-MoS2 is added to a silver nitrate solution, and Ag+ / PEG-MoS2 particles are obtained after sufficient adsorption.

[0018] Preferably, the concentration of the polyethylene glycol solution in step S11 is 1-3 wt%.

[0019] Preferably, the concentration of the ammonium tetrathiomolybdate solution in step S12 is 0.2-0.8wt%.

[0020] Preferably, the polyethylene glycol solution and the ammonium tetrathiomolybdate solution are mixed in step S13, the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 8-12:1, the reaction temperature in the high-pressure reaction kettle is 180-210℃, and the time is 6-12h.

[0021] Preferably, the concentration of the silver nitrate solution in step S14 is 0.2-0.6mol / L.

[0022] Preferably, the concentration of the flax fabric pretreatment solution in step S3 is 2.2-3.5wt%.

[0023] Preferably, the rolling reduction rate in step S4 is 100%-110%.

[0024] Beneficial effects: the polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial flax fabric has the following advantages:

[0025] 1. In the present application, MoS2 is finished on the surface of the fabric, polyethylene glycol is used to modify MoS2, and the hydrogen bond interaction between the phenolic hydroxyl group (-OH) in gallic acid and the ether bond (-O-) in polyethylene glycol successfully loads MoS2 on the surface of the flax fabric, improving the bactericidal effect;

[0026] 2. In the present application, silver ions are adsorbed on the surface of the prepared MoS2, and the silver ions can complex with gallic acid on the surface of the fiber, forming a uniform antibacterial network on the surface of the fabric;

[0027] 3. The Ag+ / PEG-MoS2 particles of the present application have strong bactericidal performance, can use near-infrared as a "trigger switch", and can efficiently inhibit bacteria through photothermal effect in the application process. Compared with traditional bactericidal finishing, the accumulation of bactericides can be reduced, and the bactericidal effect can be improved. DETAILED DESCRIPTION

[0028] The present application will be further described below in conjunction with examples, and the following examples are an explanation of the present application, and the present application is not limited to the following examples:

[0029] Example 1

[0030] A preparation method of a polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial flax fabric, the preparation method comprising the following steps:

[0031] S1. The flax fabric is subjected to low-temperature plasma treatment, and the treatment time is 150 s under a discharge power of 120 W and a vacuum degree of 30 Pa after vacuumizing;

[0032] S2. The treated flax fabric is quickly immersed in a solution containing gallic acid, and reacts at a temperature of 80℃ for 30 min to obtain a surface-modified flax fabric;

[0033] S3. The Ag+ / PEG-MoS2 particles are added to water to prepare a flax fabric pretreatment solution with a concentration of 2.2wt%;

[0034] S4. The surface-modified flax fabric prepared in step S2 is soaked and rolled twice in the pretreatment solution, with a rolling rate of 100%, and is dried and heat set to obtain an antibacterial flax fabric;

[0035] The preparation method of the Ag+ / PEG-MoS2 particles comprises the following steps:

[0036] S11. Polyethylene glycol is added to an aqueous ethanol solution, and mixed and stirred uniformly to obtain a polyethylene glycol solution with a concentration of 1wt%;

[0037] S12. Ammonium tetrathiomolybdate is added to deionized water, and mixed and stirred uniformly to obtain an ammonium tetrathiomolybdate solution with a concentration of 0.2wt%;

[0038] S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12 for equal-volume mixing, and is ultrasonically uniform after being ultrasonically uniform, then hydrazine hydrate is added, the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 8:1, and the mixture is ultrasonically uniform again, and finally, the mixture is reacted in a high-pressure reaction kettle, the reaction temperature is 180℃, and the reaction time is 12h to obtain PEG-MoS2 particles;

[0039] S14. The PEG-MoS2 particles are added to a silver nitrate solution with a concentration of 0.6mol / L, and are fully adsorbed to obtain Ag+ / PEG-MoS2 particles.

[0040] Example 2

[0041] A preparation method of a polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial flax fabric, the preparation method comprising the following steps:

[0042] S1. The flax fabric is subjected to low-temperature plasma treatment, and the treatment time is 30 s under a discharge power of 200 W and a vacuum degree of 30 Pa after vacuumizing;

[0043] S2. The treated flax fabric is quickly immersed in a solution containing gallic acid, and reacts at a temperature of 60℃ for 60 min to obtain a surface-modified flax fabric;

[0044] S3. The Ag+ / PEG-MoS2 loaded particles are added to water to prepare a pretreatment solution for linen fabric with a concentration of 3.5 wt%;

[0045] S4. The surface modified linen fabric prepared in step S2 is soaked in the pretreatment solution twice and rolled twice with a pick-up of 110%, and then dried and heat set to obtain an antibacterial linen fabric;

[0046] The preparation method of the Ag+ / PEG-MoS2 loaded particles comprises the following steps:

[0047] S11. Polyethylene glycol is added to an aqueous ethanol solution and mixed and stirred uniformly to obtain a 3 wt% polyethylene glycol solution;

[0048] S12. Ammonium tetrathiomolybdate is added to deionized water and mixed and stirred uniformly to obtain a 0.8 wt% ammonium tetrathiomolybdate solution;

[0049] S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12 for equal volume mixing, and then uniformly ultrasonicated, followed by the addition of hydrazine hydrate, the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate being 12:1, and then uniform ultrasonication, and finally reaction in a high-pressure reaction kettle at a temperature of 210°C for 6 h to obtain PEG-MoS2 particles;

[0050] S14. The PEG-MoS2 is added to a 0.2 mol / L silver nitrate solution for sufficient adsorption to obtain Ag+ / PEG-MoS2 loaded particles.

[0051] Example 3

[0052] A preparation method of a polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps:

[0053] S1. The linen fabric is subjected to low-temperature plasma treatment at a discharge power of 150 W and a vacuum degree of 30 Pa after vacuum pumping for 120 s;

[0054] 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;

[0055] S3. The Ag+ / PEG-MoS2 loaded particles are added to water to prepare a pretreatment solution for linen fabric with a concentration of 2.6 wt%;

[0056] S4. The surface-modified linen fabric prepared in step S2 is soaked twice and rolled twice in the pretreatment liquid at a pick-up of 110%, and is dried and heat-set to obtain an antibacterial linen fabric;

[0057] The preparation method of the Ag+ / PEG-MoS2-loaded particles comprises the following steps:

[0058] S11. Polyethylene glycol is added to an aqueous ethanol solution, and is uniformly mixed and stirred to obtain a 2.5wt% polyethylene glycol solution;

[0059] S12. Ammonium tetrathiomolybdate is added to deionized water, and is uniformly mixed and stirred to obtain a 0.4wt% ammonium tetrathiomolybdate solution;

[0060] S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12, and is uniformly mixed by ultrasonic treatment. Then, hydrazine hydrate is added, and the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 9:1. After uniform ultrasonic treatment, the mixture is reacted in a high-pressure reaction kettle at a temperature of 190°C for 10h to obtain PEG-MoS2 particles;

[0061] S14. The PEG-MoS2 particles are added to a 0.3mol / L silver nitrate solution, and are uniformly adsorbed to obtain Ag+ / PEG-MoS2-loaded particles.

[0062] Example 4

[0063] A preparation method of a polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps:

[0064] S1. The linen fabric is subjected to low-temperature plasma treatment at a discharge power of 180W and a vacuum degree of 30Pa after vacuum pumping for 80s;

[0065] S2. The treated linen fabric is quickly immersed in a solution containing gallic acid, and is reacted at a temperature of 65°C for 50min to obtain a surface-modified linen fabric;

[0066] S3. The Ag+ / PEG-MoS2-loaded particles are added to water to prepare a 3.1wt% linen fabric pretreatment liquid;

[0067] S4. The surface-modified linen fabric prepared in step S2 is soaked twice and rolled twice in the pretreatment liquid at a pick-up of 100%, and is dried and heat-set to obtain an antibacterial linen fabric;

[0068] The preparation method of the Ag+ / PEG-MoS2-loaded particles comprises the following steps:

[0069] S11. Polyethylene glycol is added to an aqueous ethanol solution, mixed and stirred uniformly to obtain a polyethylene glycol solution with a concentration of 1.5wt%;

[0070] S12. Ammonium tetrathiomolybdate is added to deionized water, mixed and stirred uniformly to obtain an ammonium tetrathiomolybdate solution with a concentration of 0.7wt%;

[0071] S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12, mixed in equal volume, and then ultrasonically uniformly mixed. Hydrazine hydrate is added, and the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 11:1. After ultrasonic uniform mixing, the reaction is carried out in a high-pressure reaction kettle, the reaction temperature is 200℃, and the reaction time is 8h. PEG-MoS2 particles are obtained;

[0072] S14. The PEG-MoS2 is added to a silver nitrate solution with a concentration of 0.5mol / L, and after sufficient adsorption, Ag+ / PEG-MoS2 particles are obtained.

[0073] Example 5

[0074] A preparation method of a polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps:

[0075] S1. The linen fabric is subjected to low-temperature plasma treatment, and the treatment time is 100s under a discharge power of 160W and a vacuum degree of 30Pa after vacuumizing;

[0076] S2. The treated linen fabric is quickly immersed in a solution containing gallic acid, and the reaction is carried out at a temperature of 70℃ for 45min to obtain a surface modified linen fabric;

[0077] S3. The Ag+ / PEG-MoS2 particles are added to water to prepare a linen fabric pretreatment solution with a concentration of 2.8wt%;

[0078] S4. The surface modified linen fabric prepared in step S2 is soaked in the pretreatment solution twice and rolled twice, the rolling rate is 100%, and the linen fabric is dried and heat set to obtain an antibacterial linen fabric;

[0079] The preparation method of the Ag+ / PEG-MoS2 particles comprises the following steps:

[0080] S11. Polyethylene glycol is added to an aqueous ethanol solution, mixed and stirred uniformly to obtain a polyethylene glycol solution with a concentration of 2wt%;

[0081] S12. Ammonium tetrathiomolybdate is added to deionized water, mixed and stirred uniformly to obtain an ammonium tetrathiomolybdate solution with a concentration of 0.6wt%;

[0082] S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12 for equal volume mixing, and then hydrazine hydrate is added after ultrasonic homogenization, with the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate being 10:1. After further ultrasonic homogenization, the reaction is carried out in a high-pressure reaction kettle, with the reaction temperature being 200℃ and the reaction time being 8h, to obtain PEG-MoS2 particles.

[0083] S14. The PEG-MoS2 is added to a silver nitrate solution with a concentration of 0.4mol / L, and then Ag+ / PEG-MoS2 particles are obtained after sufficient adsorption.

[0084] Comparative Example 1

[0085] A preparation method of a polyphenol compound / PEG-MoS2 modified antibacterial flax fabric, the preparation method comprising the following steps:

[0086] S1. The flax fabric is subjected to low-temperature plasma treatment, with the discharge power being 160W and the pressure after vacuum pumping being 30Pa, and the treatment time being 100s.

[0087] S2. The treated flax fabric is quickly immersed in a solution containing gallic acid, and the reaction is carried out at a temperature of 70℃ for 45min to obtain a surface-modified flax fabric.

[0088] S3. The PEG-MoS2 particles are added to water to prepare a flax fabric pretreatment solution with a concentration of 2.8wt%.

[0089] S4. The surface-modified flax fabric prepared in step S2 is soaked in the pretreatment solution twice and rolled twice, with the rolling rate being 100%, and then dried and heat set to obtain an antibacterial flax fabric.

[0090] The preparation method of the PEG-MoS2 particles comprises the following steps:

[0091] S11. Polyethylene glycol is added to an aqueous ethanol solution, and then mixed and stirred uniformly to obtain a polyethylene glycol solution with a concentration of 2wt%.

[0092] S12. Ammonium tetrathiomolybdate is added to deionized water, and then mixed and stirred uniformly to obtain an ammonium tetrathiomolybdate solution with a concentration of 0.6wt%.

[0093] S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12 for equal volume mixing, and then hydrazine hydrate is added after ultrasonic homogenization, with the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate being 10:1. After further ultrasonic homogenization, the reaction is carried out in a high-pressure reaction kettle, with the reaction temperature being 200℃ and the reaction time being 8h, to obtain PEG-MoS2 particles.

[0094] Comparative Example 2

[0095] A preparation method of Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps:

[0096] S1. The linen fabric is subjected to low-temperature plasma treatment, and the treatment time is 100 s under a discharge power of 160 W and a vacuum degree of 30 Pa after vacuumizing;

[0097] S2. The Ag+ / PEG-MoS2 loaded particles are added to water to prepare a linen fabric pretreatment solution with a concentration of 2.8 wt%;

[0098] S3. The plasma treated linen fabric prepared in step S1 is soaked twice and rolled twice in the pretreatment solution, the rolling rate is 100%, and the linen fabric is dried and heat set to obtain an antibacterial linen fabric;

[0099] The preparation method of the Ag+ / PEG-MoS2 loaded particles comprises the following steps:

[0100] S11. Polyethylene glycol is added to an aqueous ethanol solution, and the mixture is uniformly stirred to obtain a polyethylene glycol solution with a concentration of 2 wt%;

[0101] S12. Ammonium tetrathiomolybdate is added to deionized water, and the mixture is uniformly stirred to obtain an ammonium tetrathiomolybdate solution with a concentration of 0.6 wt%;

[0102] S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12 for equal volume mixing, and then uniformly ultrasonicated, hydrazine hydrate is added, the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 10:1, and then uniformly ultrasonicated, finally, the reaction is carried out in a high-pressure reaction kettle, the reaction temperature is 200℃, and the reaction time is 8 h to obtain PEG-MoS2 particles;

[0103] S14. The PEG-MoS2 is added to a silver nitrate solution with a concentration of 0.4 mol / L, and then fully adsorbed to obtain Ag+ / PEG-MoS2 loaded particles.

[0104] Comparative Example 3

[0105] A preparation method of polyphenol compound / Ag+ modified antibacterial linen fabric, the preparation method comprising the following steps:

[0106] S1. The linen fabric is subjected to low-temperature plasma treatment, and the treatment time is 100 s under a discharge power of 160 W and a vacuum degree of 30 Pa after vacuumizing;

[0107] S2. The treated linen fabric is quickly immersed in a solution containing gallic acid, and a reaction is carried out at a temperature of 70°C for 45 min to obtain a surface-modified linen fabric;

[0108] S3. Silver nitrate is added to water to prepare a silver nitrate solution with a concentration of 0.4 mol / L;

[0109] S4. The surface-modified linen fabric prepared in step S2 is soaked twice and rolled twice in the pretreatment liquid at a pick-up rate of 100%, and is dried and heat-set to obtain an antibacterial linen fabric.

[0110] Comparative Example 4

[0111] A preparation method of a polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial linen fabric, the preparation method comprising the following steps:

[0112] S1. The linen fabric is washed and dried;

[0113] S2. The treated linen fabric is immersed in a solution containing gallic acid, and a reaction is carried out at a temperature of 70°C for 45 min to obtain a surface-modified linen fabric;

[0114] S3. The Ag+ / PEG-MoS2 loaded particles are added to water to prepare a linen fabric pretreatment liquid with a concentration of 2.8 wt%;

[0115] S4. The surface-modified linen fabric prepared in step S2 is soaked twice and rolled twice in the pretreatment liquid at a pick-up rate of 100%, and is dried and heat-set to obtain an antibacterial linen fabric.

[0116] The preparation method of the Ag+ / PEG-MoS2 loaded particles comprises the following steps:

[0117] S11. Polyethylene glycol is added to an aqueous ethanol solution, and is uniformly mixed and stirred to obtain a polyethylene glycol solution with a concentration of 2 wt%;

[0118] S12. Ammonium tetrathiomolybdate is added to deionized water, and is uniformly mixed and stirred to obtain an ammonium tetrathiomolybdate solution with a concentration of 0.6 wt%;

[0119] S13. The polyethylene glycol solution prepared in S11 is added to the ammonium tetrathiomolybdate solution prepared in S12 for equal-volume mixing, and is uniformly ultrasonicated, then hydrazine hydrate is added, the mass ratio of hydrazine hydrate to ammonium tetrathiomolybdate is 10:1, and the mixture is uniformly ultrasonicated again, and finally, a reaction is carried out in a high-pressure reaction kettle at a temperature of 200°C for 8 h to obtain PEG-MoS2 particles;

[0120] S14. The PEG-MoS2 was added to a 0.4 mol / L silver nitrate solution, and after sufficient adsorption, Ag+ / PEG-MoS2 particles were obtained.

[0121] The test samples in the examples and comparative examples were respectively placed in a culture dish, sterilized at high temperature, then inoculated with a bacterial suspension, then exposed to near-infrared light for 10 min, incubated at 37°C for 18 h, and finally the bactericidal effect was evaluated by comparing the number of colonies in different example groups and control groups. Table 1 shows the antibacterial effect of unwashed fabric, and Table 2 shows the antibacterial effect of fabric washed 20 times according to the national standard.

[0122] Table 1

[0123]

[0124]

[0125] Table 2

[0126] Staphylococcus aureus % inhibition Escherichia coli % inhibition Candida albicans % inhibition 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

[0127] Obviously, the above examples are merely examples for the sake of clarity, and are not limiting of the embodiments. Based on the above description, other different forms of changes or variations can also be made by those of ordinary skill in the art. It is not necessary or possible to exhaust all embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial flax fabric, characterized in that, The preparation method includes the following steps: S1. The flax fabric is subjected to low-temperature plasma treatment for a certain time under certain power and vacuum conditions; S2. The treated flax fabric is quickly immersed in a solution containing gallic acid and reacted at a certain temperature to obtain surface-modified flax fabric; S3. Add Ag+ / PEG-MoS2 loaded particles to water to prepare a flax fabric pretreatment solution; S4. The surface-modified flax fabric prepared in step S2 is immersed twice and rolled twice in a pretreatment solution, and then dried and heat-set to obtain antibacterial flax fabric. The preparation method of the Ag+ / PEG-MoS2 loaded particles includes the following steps: S11. Add polyethylene glycol to an aqueous ethanol solution, mix and stir until homogeneous to obtain a polyethylene glycol solution; S12. Add ammonium tetrathiomolybdate to deionized water, mix and stir until homogeneous to obtain ammonium tetrathiomolybdate solution; S13. Add the polyethylene glycol solution prepared in S11 to the ammonium tetrathiomolybdate solution prepared in S12, sonicate to homogenize, add hydrazine hydrate, sonicate to homogenize again, and finally react in a high-pressure reactor to obtain PEG-MoS2 particles. S14. Add PEG-MoS2 to silver nitrate solution and allow it to fully adsorb to obtain Ag+ / PEG-MoS2 loaded particles.

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

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

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

5. The method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial flax fabric according to claim 1, characterized in that: The concentration of the ammonium tetrathiomolybdate solution in step S12 is 0.2-0.8 wt%.

6. The method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial flax fabric according to claim 1, characterized in that: In step S13, polyethylene glycol solution and 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 high-pressure reactor is 180-210℃, and the reaction time is 6-12h.

7. The method for preparing polyphenol compound / Ag+ / PEG-MoS2 modified antibacterial flax fabric according to claim 1, characterized in that: In step S14, the concentration of the silver nitrate solution is 0.2-0.6 mol / L.

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

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

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