阅读说明：本技术 一种抗菌枕头 (Antibacterial pillow ) 是由 吕亚骏 许加富 于 2021-09-14 设计创作，主要内容包括：本申请涉及纺织品技术领域,具体公开了一种抗菌枕头,包括由改性棉纤维制成的枕套以及设置在枕套内的棉纤维填充物,改性棉纤维制备方法为：在棉纤维上依次浸渍PVA溶液、改性氧化石墨烯溶液、银纳米线溶液。其中改性氧化石墨烯溶液采用PVP、氧化石墨烯和壳聚糖混合而成,本申请的制备方法制备的枕套能够充分发挥银纳米线和改性氧化石墨烯本身抗菌的功效,达到最佳的抗菌效果,同时改性棉纤维制成的枕套,不失棉纤维本身的柔韧性和可加工性,对皮肤无刺激作用,且无毒副作用。(The application relates to the technical field of textiles, and particularly discloses an antibacterial pillow, which comprises a pillowcase made of modified cotton fibers and a cotton fiber filler arranged in the pillowcase, wherein the preparation method of the modified cotton fibers comprises the following steps: and sequentially dipping a PVA solution, a modified graphene oxide solution and a silver nanowire solution on the cotton fiber. The pillowcase prepared by the preparation method can fully exert the antibacterial effects of the silver nanowires and the modified graphene oxide, the optimal antibacterial effect is achieved, meanwhile, the pillowcase made of the modified cotton fibers does not lose the flexibility and the processability of the cotton fibers, has no stimulation to skin, and has no toxic or side effect.)

1. The antibacterial pillow is characterized by comprising a pillowcase made of modified cotton fibers and cotton fiber fillers arranged in the pillowcase, and the preparation method of the modified cotton fibers comprises the following steps:

(1) soaking cotton fibers in a PVA aqueous solution, and carrying out soaking-lifting to obtain modified cotton fibers I;

(2) dipping the modified cotton fiber I obtained in the step (1) in a modified graphene oxide solution, and carrying out dipping-lifting to obtain a modified cotton fiber II;

(3) dispersing silver nanowires in an ethanol solution to obtain a silver nanowire solution, dipping the modified cotton fiber II obtained in the step (2) in the silver nanowire solution, dipping, lifting and drying to obtain a modified cotton fiber;

the preparation method of the modified graphene oxide solution comprises the following steps:

dissolving chitosan in an acetic acid solution to obtain a chitosan solution with the mass fraction of 6-9%, dispersing graphene oxide in ethylene glycol to obtain a graphene oxide dispersion liquid with the mass fraction of 20-30%, mixing the chitosan solution and the graphene oxide dispersion liquid to obtain a graphene oxide and chitosan mixed solution, adding PVP into the graphene oxide and chitosan mixed solution to obtain a modified graphene oxide solution, wherein the mass ratio of the PVP to the chitosan solution to the graphene oxide dispersion liquid is 1:10-20: 30-50.

2. An antibacterial pillow as defined in claim 1, wherein: in the step (1), the dipping-pulling times are 2-6 times, and the dipping time is 2-5min each time.

3. An antibacterial pillow as defined in claim 1, wherein: in the step (2), the dipping-pulling times are 1-3 times, and the dipping time is 6-20min each time.

4. An antibacterial pillow as defined in claim 1, wherein: in the step (3), the dipping-pulling times are 4-6 times, and each dipping time is 3-6 min.

5. An antibacterial pillow as defined in claim 1, wherein: in the step (3), the drying temperature is 60-80 ℃, and the drying time is 3-6 h.

6. An antibacterial pillow as defined in claim 1, wherein: in the step (3), the preparation method of the silver nanowire comprises the following steps:

dissolving 1.01-1.25kg PVP in 150L ethylene glycol to obtain mixture A, and adding 1.5-1.9kg AgNO₃And dissolving the powder in the mixture A to obtain a mixture B, adding 17-20kg of 600 [ mu ] mol/L ethylene glycol solution of ferric chloride into the mixture B, heating in an oil bath, and centrifuging to obtain the silver nanowires.

7. An antibacterial pillow as claimed in claim 6, characterized in that: the oil bath heating mode is that the temperature is firstly raised to 90-100 ℃ and heated for 4-5h, and then the temperature is raised to 110-120 ℃ and heated for 5-6 h.

8. An antibacterial pillow as claimed in claim 6, characterized in that: the length of the silver nanowire is 80-120 mu m, and the radius of the silver nanowire is 60-80 nm.

Technical Field

The application relates to the technical field of textiles, in particular to an antibacterial pillow.

Background

In recent years, with the improvement of living standard and the increase of working pressure of people, people have higher and higher requirements on rest. The pillow is one of important factors for improving the sleeping quality of people as daily necessities of people, so the design of the pillow directly influences the sleeping quality of people. At present, various pillows exist in the market, such as buckwheat pillows, chemical fiber pillows, latex pillows, down pillows, health-care pillows and the like, so as to meet different requirements of people.

According to medical reports, common pillows and bedding are hotbeds for breeding bacteria and mites, and if the pillows are used for three years, 10% of mould, mite excrement and mite dead bodies spreading over the bodies can be contained, and the health of people can be seriously affected after the pillows are used for a long time.

Therefore, there is still a need for an antibacterial pillow capable of inhibiting the growth of bacteria.

Disclosure of Invention

In order to solve the problem that bacteria are easy to breed in a common pillow, the application provides an antibacterial pillow.

The application provides an antibiotic pillow adopts following technical scheme:

an antibacterial pillow comprises a pillowcase made of modified cotton fibers and cotton fiber fillers arranged in the pillowcase, and the preparation method of the modified cotton fibers comprises the following steps:

(1) soaking cotton fibers in a PVA aqueous solution, and carrying out soaking-lifting to obtain modified cotton fibers I;

(2) dipping the modified cotton fiber I obtained in the step (1) in a modified graphene oxide solution, and carrying out dipping-lifting to obtain a modified cotton fiber II;

(3) dispersing silver nanowires in an ethanol solution to obtain a silver nanowire solution, dipping the modified cotton fiber II obtained in the step (2) in the silver nanowire solution, dipping, lifting and drying to obtain a modified cotton fiber;

the preparation method of the modified graphene oxide solution comprises the following steps:

dissolving chitosan in an acetic acid solution to obtain a chitosan solution with the mass fraction of 6-9%, dispersing graphene oxide in ethylene glycol to obtain a graphene oxide dispersion liquid with the mass fraction of 20-30%, mixing the chitosan solution and the graphene oxide dispersion liquid to obtain a graphene oxide and chitosan mixed solution, adding PVP into the graphene oxide and chitosan mixed solution to obtain a modified graphene oxide solution, wherein the mass ratio of the PVP to the chitosan solution to the graphene oxide dispersion liquid is 1:10-20: 30-50.

By adopting the technical scheme, the modified cotton fiber is prepared by sequentially impregnating cotton fiber with PVA (polyvinyl alcohol) aqueous solution, modified graphene oxide solution and silver nanowire solution, the silver nanowire has broad-spectrum antibacterial property, the specific surface area of the graphene oxide is large, and the modified cotton fiber has strong ion exchange capacity, the graphene oxide has antibacterial property and adsorption and other effects, a pillow case made of the modified cotton fiber is directly contacted with human skin, the antibacterial effects of the silver nanowire and the graphene oxide can be fully exerted, the optimal antibacterial effect is achieved, meanwhile, the graphene oxide can adsorb peculiar smell generated by long-time use of the pillow case, and the cleanness and tidiness of the pillow case are further ensured.

PVA is a water-soluble high molecular polymer, the PVA aqueous solution has good adhesion and film-forming property, the cotton fiber is dipped in the PVA solution, so that PVA is adhered to the peripheral surface of the cotton fiber, then the cotton fiber is dipped in the modified graphene oxide solution, the PVA is used for bonding graphene oxide and chitosan, the modified cotton fiber is dipped in the silver nanowire solution, and PVP (polyvinylpyrrolidone) is used for bonding silver nanowires.

The modified graphene oxide solution is PVP, a mixed solution of graphene oxide and chitosan, the surface of the graphene oxide has a large number of oxygen-containing functional groups, such as carboxyl, hydroxyl, epoxy and the like, so that a carbon layer is negatively charged, chitosan is positively charged by a large number of amino groups in the chitosan, a strong hydrogen bonding effect exists between the oxygen-containing groups of the graphene oxide and chitosan molecules, the graphene oxide and the chitosan are further stably bonded, meanwhile, the chitosan can enter the layers of the graphene oxide, the interlayer spacing is enlarged, favorable conditions are provided for the subsequent loading of silver nanowires, the PVP has viscosity, the bonding fastness of silver can be increased, and the antibacterial effect of the prepared modified cotton fibers is long.

Preferably, in the step (1), the number of dipping-pulling is 2-6, and the time of each dipping is 2-5 min.

By adopting the technical scheme, the times of dipping-lifting and the time of each dipping are limited, the PVA aqueous solution can be uniformly adhered to the cotton fibers, the subsequent cotton fibers can be uniformly loaded with the modified graphene oxide solution, if the PVA aqueous solution is excessively dipped on the cotton fibers, the PVA is thick after being solidified, the bonding between the cotton fibers and the modified graphene is not firm, the antibacterial performance of the modified cotton fibers is reduced, the flexibility of the modified cotton fibers is reduced, if the PVA solution is excessively dipped on the cotton fibers, the amount of the modified graphene oxide loaded on the modified cotton fibers is further influenced, and the antibacterial and adsorption performances of the subsequent pillow case are further influenced.

Preferably, in the step (2), the number of dipping-pulling is 1-3, and the time of each dipping is 6-20 min.

Through adopting above-mentioned technical scheme, modified graphene oxide solution has certain cohesiveness, therefore modified cotton fiber should not be the overlength in modified graphene oxide solution impregnated number of times and time, if the number of times and the time overlength of flooding, make modified graphene oxide solution too much load on modified cotton fiber one, and then lead to modified cotton fiber one's diameter too thick easily, reduced the cohesiveness that graphene oxide bonded on modified cotton fiber one, reduced modified cotton fiber's pliability simultaneously, and then influenced the long-term bacterinertness of follow-up pillowcase.

Preferably, in the step (3), the dipping-pulling times are 4-6 times, and each dipping time is 3-6 min.

By adopting the technical scheme, because graphene oxide surface activity is high, the chitosan after dissolution is in a gel state, and has strong adsorption capacity, the silver nanowires are easily adsorbed to the graphene oxide through static electricity, and meanwhile, the chitosan and the graphene oxide present a cross-linked network structure, so that the silver nanowires are more favorably loaded, and the PVP enables the silver nanowires to be adhered to the graphene oxide and the chitosan, so that the impregnation times and time of the silver nanowires are not too long, and the excessive loading of the silver nanowires not only improves the cost of raw materials, but also reduces the adhesiveness of the silver nanowires, and reduces the antibacterial durability of the pillowcase.

Preferably, in the step (3), the drying temperature is 60-80 ℃, and the drying time is 3-6 h.

By adopting the technical scheme, the drying temperature is between 60 and 80 ℃, the ethanol and the acetic acid on the modified cotton fiber II can be volatilized, and then a plurality of holes are formed in the outer peripheral surface of the modified cotton fiber I, so that the loading capacity of subsequent silver nanowires and the air permeability of a pillow case are improved, and meanwhile, the graphene is helpful for resisting bacteria and adsorbing peculiar smell.

Preferably, in the step (3), the preparation method of the silver nanowires comprises the following steps:

dissolving 1.01-1.25kg PVP in 150L ethylene glycol to obtain mixture A, and adding 1.5-1.9kg AgNO₃And dissolving the powder in the mixture A to obtain a mixture B, adding 17-20kg of 600 [ mu ] mol/L ethylene glycol solution of ferric chloride into the mixture B, heating in an oil bath, and centrifuging to obtain the silver nanowires.

By adopting the technical scheme, the preparation method of the silver nanowire is simple to operate, the heated glycol is adopted to reduce silver ions, then silver atoms are polymerized and grow into seed crystals, the seed crystals grow into the nanowire in an oriented manner under the oriented coating of PVP, the silver nanowire prepared by the method has a large length-diameter ratio, a cross-linked network structure can be formed, the improvement of the cohesiveness between the silver nanowire and graphene oxide-chitosan is facilitated, the silver nanofiber with the large length-diameter ratio has a strong antibacterial property, and meanwhile, the silver nanowire has better flexibility and machinability when being loaded on cotton fibers.

Preferably, the oil bath heating mode is that the temperature is firstly raised to 90-100 ℃ and heated for 4-5h, and then the temperature is raised to 110-120 ℃ and heated for 5-6 h.

By adopting the technical scheme, the temperature is increased to between 90 and 100 ℃, most particles are nucleated and grow at the moment, constant-temperature treatment is carried out due to different growth speeds of the particles, a small number of particles are nucleated and grow nanowires, silver nanoparticles grow into silver nanowires as much as possible, then the temperature is between 110 and 120 ℃, the diameter and the length of the silver nanowires start to grow, and further the silver nanowires with proper length are obtained.

Preferably, the length of the silver nanowire is 80-120 mu m, and the radius of the silver nanowire is 60-80 nm.

By adopting the technical scheme, the prepared silver nanowires are 80-120 mu m in length and 60-80nm in radius, so that the silver nanowires with better antibacterial and antistatic effects are obtained, and meanwhile, the silver nanowires are loaded on cotton fibers to form a cross-linked network structure, so that the cohesiveness of the silver nanowires, chitosan and graphene oxide is facilitated.

In summary, the present application has the following beneficial effects:

1. because the pillowcase of this application adopts modified cotton fiber to make, modified cotton fiber is by cotton fiber impregnation PVA aqueous solution, modified graphene oxide solution and silver nano wire solution in proper order and is made, PVA aqueous solution has fine adhesion and film forming nature, further strengthen the cohesiveness of modified graphene oxide and cotton fiber, make the antibiotic effect of modified cotton fiber prepared permanent, graphene oxide itself has effects such as antibiotic, adsorption, silver nano wire has broad spectrum bacterinertness, the pillowcase directly contacts with human skin, can give full play to silver nano wire and graphene oxide own antibiotic effect, reach best antibiotic effect, the pillowcase that modified cotton fiber made simultaneously, do not lose cotton fiber own pliability and machinability, no stimulation to the skin, and no toxic and side effect.

2. Graphene oxide in this application surface has a large amount of oxygen-containing functional groups for the carbon-layer is negatively charged, have a large amount of amino in the chitosan and make chitosan positively charged, have stronger hydrogen bond effect between graphene oxide's oxygen-containing group and the chitosan molecule, and then make graphene oxide and chitosan bonding stable, PVP has better cohesiveness, can bond silver nano wire and graphite alkene-chitosan together, reinforcing silver nano wire load cohesiveness on the cotton fiber, the antibiotic effect of the modified cotton fiber who makes the preparation is permanent.

3. According to the preparation method of the silver nanowires, the sectional type heating mode is adopted in oil bath heating, so that the growth of the silver nanowires is more uniform, the length-diameter ratio of the silver nanowires is larger, the prepared silver nanowires are 80-120 mu m in length, the radius is 60-80nm, the antibacterial performance of the silver nanowires is improved, the silver nanowires are loaded on cotton fibers to form a cross-linked network structure, the cohesiveness of the silver nanowires, chitosan and graphene oxide is further enhanced, and a pillowcase which is good in antibacterial performance and durable in antibacterial performance is obtained.

Detailed Description

The present application will be described in further detail with reference to examples.

PVA was selected from polyvinyl alcohol 1788 type, degree of alcoholysis: 87-89%; the concentration of the acetic acid solution is 3-5%;

preparation example of silver nanowire

Preparation example 1

1.01kg of PVP was weighed and dissolved in 130L of ethylene glycol, and 1.5kg of AgNO was added₃And dissolving the powder in the solution, finally adding 17kg of 600 [ mu ] mol/L ethylene glycol solution of ferric chloride, heating in an oil bath, firstly heating to 95 ℃ for 4 hours, then heating to 120 ℃ for 5 hours, centrifuging for many times by using acetone and ethanol to obtain silver nanowires, wherein the length of the obtained silver nanowires is 120 [ mu ] m, and the radius of the obtained silver nanowires is 60 nm.

Preparation example 2

The difference from the preparation example 1 is that the silver nanowires are heated by oil bath, the temperature is firstly raised to 90 ℃ for heating for 5h, and then raised to 110 ℃ for heating for 6h, and the length of the obtained silver nanowires is 110 micrometers, and the radius of the silver nanowires is 65 nm.

Preparation example 3

The difference from the preparation example 1 is that the silver nanowires are heated by oil bath, the temperature is firstly raised to 100 ℃ for 4h, then raised to 120 ℃ for 5h, and the length of the obtained silver nanowires is 130 micrometers, and the radius of the silver nanowires is 75 nm.

Preparation example 4

The difference from the preparation example 1 is that the silver nanowires are heated by oil bath at 95 ℃ for 9h, the length of the obtained silver nanowires is 70 mu m, and the radius of the silver nanowires is 55 nm.

Preparation example 5

The difference from the example 1 is that the silver nanowires are heated by oil bath at 120 ℃ for 9h, the length of the obtained silver nanowires is 110 mu m, and the radius of the silver nanowires is 90 nm.

Preparation example of modified graphene oxide solution

Preparation example 1

Dissolving chitosan in an acetic acid solution to obtain a chitosan solution with the mass fraction of 7%, dispersing graphene oxide in ethylene glycol to obtain a graphene oxide dispersion liquid with the mass fraction of 25%, mixing the chitosan solution with the graphene oxide dispersion liquid to obtain a graphene oxide and chitosan mixed solution, adding 10kg of PVP into the graphene oxide and chitosan mixed solution, wherein the mass ratio of the PVP to the chitosan solution to the graphene oxide dispersion liquid is 1:15:40, and finally obtaining the modified graphene oxide solution.

Preparation example 2

The difference from preparation example 1 is that the mass ratio of PVP, chitosan solution and graphene oxide dispersion is 1:10: 30.

Preparation example 3

The difference from preparation example 1 is that the mass ratio of PVP, chitosan solution and graphene oxide dispersion is 1:20: 50.

Examples

Example 1

The silver nanowires are selected from silver nanowire preparation example 1; the modified graphene oxide solution is selected from modified graphene oxide solution preparation example 1;

an antibacterial pillow comprises a pillowcase made of modified cotton fiber and cotton fiber filler arranged in the pillowcase;

the preparation method of the modified cotton fiber comprises the following steps:

(1) soaking 0.3kg of cotton fiber in 10% PVA water solution for 4 times, wherein the soaking time is 3min each time, and obtaining modified cotton fiber I;

(2) dipping the modified cotton fiber I obtained in the step (1) in a modified graphene oxide solution for 2 times, wherein the dipping time is 15min, and thus obtaining a modified cotton fiber II;

(3) dispersing silver nanowires in an ethanol solution to obtain a silver nanowire solution with the weight percentage of 0.5%, dipping the modified cotton fiber II obtained in the step (2) in the silver nanowire solution for 5 times, wherein the dipping time is 5min, the drying temperature is 75 ℃, and the drying time is 4h to obtain the modified cotton fiber.

Example 2

An antibacterial pillow, which is different from example 1 in that silver nanowires are selected from the group consisting of silver nanowire preparation example 2; the modified graphene oxide solution was selected from modified graphene oxide solution preparation example 1.

Example 3

An antibacterial pillow, differing from example 1 in that silver nanowires are selected from silver nanowire preparation example 3; the modified graphene oxide solution was selected from modified graphene oxide solution preparation example 1.

Example 4

An antibacterial pillow, which is different from example 1 in that silver nanowires are selected from the group consisting of silver nanowire preparation example 4; the modified graphene oxide solution was selected from modified graphene oxide solution preparation example 1.

Example 5

An antibacterial pillow, which is different from example 1 in that silver nanowires are selected from the group consisting of silver nanowire preparation example 5; the modified graphene oxide solution was selected from modified graphene oxide solution preparation example 1.

Example 6

An antibacterial pillow is different from the embodiment 1 in that the modified graphene oxide solution is selected from modified graphene oxide solution preparation example 2.

Example 7

An antibacterial pillow is different from the embodiment 1 in that the modified graphene oxide solution is selected from modified graphene oxide solution preparation example 3.

Comparative example

Comparative example 1

An antibacterial pillow, which is different from the embodiment 1 in that the modified cotton fiber is prepared by a method without the step (2).

Comparative example 2

An antibacterial pillow is different from the antibacterial pillow in the embodiment 1, in the preparation method of the modified cotton fiber, in the step (2), graphene oxide is adopted to replace a modified graphene oxide solution.

Comparative example 3

An antibacterial pillow is different from the embodiment 1 in that PVP is not added in the preparation method of the modified graphene oxide solution.

Comparative example 4

An antibacterial pillow is different from the antibacterial pillow in the embodiment 1 in that chitosan is not added in the preparation method of the modified graphene oxide solution.

Comparative example 5

An antibacterial pillow, which is different from the embodiment 1 in that the modified cotton fiber is prepared by a method without the step (3).

Comparative example 6

An antibacterial pillow is different from the antibacterial pillow in embodiment 1 in that a pillow case is made of graphene composite non-woven fabric, and the graphene composite non-woven fabric is made by the following method:

a1, preparing non-woven fabric by adopting terylene through a heat seal technology;

a2, mixing the graphene raw material with activated carbon, water, an antioxidant 1076, calcium stearate and glue, and uniformly stirring to form a spraying liquid;

a3, uniformly spraying the spraying liquid formed in the step A2 on the non-woven fabric prepared in the step A1 through an air compressor, and drying and rolling to obtain the graphene composite non-woven fabric. The spraying liquid comprises the following components in percentage by mass: 3% of graphene raw material, 25% of activated carbon, 30% of natural latex, 0.3% of antioxidant, 0.5% of calcium stearate and the balance of water. The spraying amount of the spraying liquid is 1m per²50g of non-woven fabric is sprayed. The graphene raw material is a mixture formed by carbon dioxide supercritical expansion stripping graphene and amino polymer modified graphene oxide according to a mass ratio of 1: 1.

Comparative example 7

An antibacterial pillow, which is different from the embodiment 1 in that the modified cotton fiber is prepared by the following method:

soaking cotton fiber in nano silver water solution, drying, and preparing the nano silver water solution by the method in reference to 'controllable preparation of nano silver and antibacterial finishing of cotton fabric (Zhang delock, Liao Yanfen, Linhong, etc.. controllable preparation of nano silver and antibacterial finishing of cotton fabric [ J ]. textile science, 2013, 34(11): 87-0.)':

firstly, PNP is synthesized, then PNP is dissolved in deionized water to prepare 100g/L of mother liquor, a certain amount of mother liquor is taken to be dripped into 50mL of deionized water to be diluted to the concentration required by an experiment, then 0.5mL of 0.1mol/L silver nitrate aqueous solution is dripped into 50mL of polymer solution dropwise, then heating is carried out, the solution gradually changes from colorless transparency to bright yellow, and the nano-silver aqueous solution is obtained.

Comparative example 8

The difference from example 1 is that the mass ratio of PVP, chitosan solution and graphene oxide dispersion is 1:5: 55.

Comparative example 9

The difference from example 1 is that the mass ratio of PVP, chitosan solution and graphene oxide dispersion is 1:25: 25.

Performance test

The antibacterial pillows prepared in examples 1 to 7 and comparative examples 1 to 9 were brought to 20 to 25 c under an environment of a relative humidity of 65 to 80%, and the antibacterial rate of the antibacterial pillows was measured according to the following method.

The antibacterial rate is as follows: according to GB/T20944.3-2008, evaluation of antibacterial performance of textiles part 3: detecting by an oscillation method; staphylococcus aureus and Escherichia coli were used for the antibacterial test.

The pillowcase prepared in examples 1-7 and comparative examples 1-9 was washed according to the method in GB/T8629-2017 Home washing and drying procedure for textile test with washing degree of 4N, 20 times for 1 time for drying, and the antibacterial rate of the pillowcase after washing was tested after placing in an environment with relative humidity of 65-80% at 20-25 deg.C for a period of time.

Table 1 antibacterial property test of antibacterial pillow cases of examples 1 to 7 and comparative examples 1 to 9 and antibacterial test results after washing 10, 20, 30 times.

As can be seen from the data in table 1, the antibacterial pillows prepared according to the methods in examples 1 to 7 have antibacterial rates of more than 95% for staphylococcus aureus and escherichia coli before washing, and have a good antibacterial effect, wherein example 1 is the best example, and the antibacterial rates of more than 99% for staphylococcus aureus and escherichia coli; after the pillowcase is washed for 10 times, the antibacterial rates of examples 1-7 on staphylococcus aureus and escherichia coli are basically unchanged, and after the pillowcase is washed for 20 times and 30 times respectively, the antibacterial rates of the pillowcase prepared by the methods of examples 1-7 on staphylococcus aureus and escherichia coli are all kept above 93%, which shows that the pillowcase prepared by the method has good antibacterial performance and antibacterial durability.

The method comprises the following step (1) of not including the step (2), namely the cotton fiber is not soaked in the modified graphene solution, the cotton fiber is soaked in the PVA aqueous solution and then is soaked in the silver nanowire solution, as can be seen from table 1, the antibacterial rate of the pillowcase prepared in the comparative example 1 to staphylococcus aureus and escherichia coli is kept about 90%, after the pillowcase is washed for 20 times and 30 times, the antibacterial rate is kept above 86%, and the PVA can be bonded with the silver nanowire, so that the antibacterial property of the pillowcase is still kept after the pillowcase is washed for 30 times, and meanwhile, the cotton fiber is not soaked in the modified graphene solution, so that the antibacterial property of the modified cotton fiber is reduced, and meanwhile, the antibacterial durability is also reduced.

The comparative example 2 adopts graphene oxide to replace a modified graphene oxide solution, and as can be seen from table 1, the antibacterial rates of the pillowcase prepared in the comparative example 2 to staphylococcus aureus and escherichia coli are both kept above 92%, which indicates that the graphene-loaded silver nanowire has better antibacterial property, and after the pillowcase is washed for 30 times, the antibacterial rates of the pillowcase to staphylococcus aureus and escherichia coli are both kept about 80%, so that the preparation method does not add PVP and chitosan, only the adhesion between the graphene-loaded silver nanowire and cotton fiber is poor, and after the pillowcase is washed for 30 times, the antibacterial rates of the pillowcase to staphylococcus aureus and escherichia coli are greatly reduced.

In the preparation method of the modified graphene oxide solution in the comparative example 3, PVP is not added, and as can be seen from table 1, the antibacterial rates of the pillowcase prepared in the comparative example 3 to staphylococcus aureus and escherichia coli before washing are both kept at about 99%, but after the pillowcase is washed for 30 times, the antibacterial rates of the pillowcase to staphylococcus aureus and escherichia coli are both kept at about 85%, so that the addition of PVP increases the cohesiveness of graphene and silver nanowires loaded on cotton fibers, and further enhances the long-term antibacterial period of the pillowcase.

In the preparation method of the modified graphene oxide solution in the comparative example 4, chitosan is not added, and as can be seen from table 1, the antibacterial rates of the pillowcase prepared in the comparative example 4 to staphylococcus aureus and escherichia coli before washing are both kept at about 96%, but after the pillowcase is washed for 30 times, the antibacterial rates of the pillowcase to staphylococcus aureus and escherichia coli are both kept at about 91%, so that the antibacterial performance of the pillowcase is reduced without adding chitosan, and meanwhile, the adhesion between the modified graphene solution and the silver nanowires is weakened.

The cotton fiber in the comparative example 5 is not loaded with the silver nanowires, and as can be seen from table 1, the antibacterial rates of the pillowcase prepared in the comparative example 5 to staphylococcus aureus and escherichia coli before washing are both kept at about 88%, and after the pillowcase is washed for 30 times, the antibacterial rates of the pillowcase to staphylococcus aureus and escherichia coli are both kept at about 84%, so that the antibacterial performance of the pillowcase prepared by singly adopting the modified graphene is poorer than that of the pillowcase prepared by combining the modified graphene with the silver nanowires.

Comparative example 6 is the graphene composite non-woven fabric prepared in the prior art, and antibacterial tests on the pillowcase before washing show that the antibacterial rates on staphylococcus aureus and escherichia coli are all kept at about 99%, but after the pillowcase is washed for 30 times, the antibacterial rates on staphylococcus aureus and escherichia coli are all kept at about 92%, so that the antibacterial performance of the pillowcase on the fabric is obviously reduced after the fabric is washed for 30 times in the prior art, and the long-term antibacterial performance of the fabric prepared in the prior art is poor.

In comparative example 7, the modified cotton fiber was prepared by immersing cotton fiber in an aqueous solution of silver nanoparticles prepared in the prior art to obtain a cotton fiber loaded with silver nanoparticles. Before washing, the antibacterial rate of the pillowcase in the comparative example 7 to staphylococcus aureus and escherichia coli is kept at about 99%, but after the pillowcase is washed for 30 times, the antibacterial rate of the pillowcase to staphylococcus aureus and escherichia coli is kept at about 94%, so that the antibacterial performance of the pillowcase is obviously reduced, and the antibacterial durability of the pillowcase is reduced.

Comparative examples 8 to 9 change the proportional relationship among PVP, a chitosan solution and a graphene oxide dispersion, before washing, the antibacterial rates of the pillowcase in comparative examples 8 to 9 on staphylococcus aureus and escherichia coli are all kept at about 98%, but after the pillowcase is washed for 30 times, the antibacterial rates of the pillowcase on staphylococcus aureus and escherichia coli are all kept at about 90%, so that the proportional relationship among the pillowcase, the antibacterial performance and the antibacterial durability are changed, the antibacterial performance is lower than that in example 1, and the antibacterial durability of the pillowcase is lower than that in example 1.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.