Antibacterial fabric and preparation process thereof

Abstract

The invention relates to an antibacterial fabric and a preparation process thereof, and relates to the technical field of fabrics. The antibacterial fabric comprises a fabric body, the fabric body is formed by weaving polyester fibers, an antibacterial fiber membrane layer is arranged on the fabric body, and a preparation method of the antibacterial fiber membrane layer comprises the following steps that honokiol is added into a hexafluoroisopropanol solution and stirred to be uniform, then a polylactic acid-glycolic acid copolymer is added and stirred to be uniform, and the antibacterial fiber membrane layer is obtained. Preparing an antibacterial fiber membrane layer through electrostatic spinning equipment; the antibacterial fabric has the effect of improving the antibacterial property of the fabric.

Description

Technical Field

[0001] The present application relates to the technical field of fabrics, and in particular to an antibacterial fabric and a preparation process thereof. Background Art

[0002] Clothing refers to items worn to cover the body and keep out the cold and beautify the appearance. Today, it generally refers to all kinds of clothes worn on the body. The original meaning of clothes is to keep out the cold, keep warm and protect the body. In modern society, clothes have become decorative items for the human body. They are more of a reference to a person's living standard, consumption level and social status. But at the same time, they also play the original and unchanged basic function, with only a difference in texture. Fabric is the material used to make clothes. As one of the three elements of clothing, fabric can not only interpret the style and characteristics of clothing, but also directly affect the color and shape of clothing. In order to improve the functionality of fabric, fabric is generally compounded into new fabric so that the compounded fabric has a variety of new functions.

[0003] In summer, the weather is relatively hot. When people exercise, the comfortable microclimate environment between the skin and clothes is destroyed, and it is easy to sweat profusely. At this time, the clothes will absorb the sweat produced on the user's skin surface, making the clothes damp, which can easily lead to the growth of a large number of bacteria and affect people's health. Summary of the invention

[0004] In order to improve the antibacterial property of fabrics, the present application provides an antibacterial fabric and a preparation process thereof.

[0005] In the first aspect, the present application provides an antibacterial fabric, which adopts the following technical solution: An antibacterial fabric comprises a fabric body, wherein the fabric body is woven from polyester fibers, an antibacterial fiber membrane layer is arranged on the fabric body, and a preparation method of the antibacterial fiber membrane layer comprises the following steps: Add honokiol to the hexafluoroisopropanol solution, stir evenly, then add polylactic acid-glycolic acid copolymer, stir evenly, and then use an electrospinning device to make an antibacterial fiber membrane layer.

[0006] By adopting the above technical scheme, polylactic acid-glycolic acid copolymer has good mechanical properties, biocompatibility, and controllable degradation rate; magnolia officinalis has good antibacterial properties, but magnolia officinalis has the defects of low solubility and poor mechanical properties. Therefore, by combining polylactic acid-glycolic acid copolymer and magnolia officinalis to prepare an antibacterial fiber membrane layer, magnolia officinalis can be embedded or loaded into polylactic acid-glycolic acid copolymer to inhibit the growth of bacteria and play a good antibacterial effect.

[0007] Moreover, the antibacterial fiber membrane layer prepared by electrospinning has a large specific surface area, which can realize the release of magnolia officinalis, thereby achieving better and lasting antibacterial performance of magnolia officinalis on fabrics.

[0008] In addition, magnolia officinalis has good antioxidant properties, which increases the natural antioxidant properties of the composite nanofiber membrane. The structure of magnolia officinalis contains a large number of intermolecular hydrogen bonds and has extremely high reactivity. It can react with free radicals to play an antioxidant role, thereby inhibiting the growth of harmful microorganisms and better promoting the antibacterial properties of the fabric.

[0009] Preferably, graphene oxide is further added during the preparation of the antibacterial fiber membrane layer. The method for preparing the antibacterial fiber membrane layer comprises the following steps: Add magnolol and graphene oxide to a hexafluoroisopropanol solution, stir evenly, then add polylactic acid-glycolic acid copolymer, stir evenly, and then use an electrospinning device to make an antibacterial fiber membrane layer.

[0010] By adopting the above technical solution, graphene oxide destroys the bacterial cell membrane through the hydroxyl and carboxyl groups on its surface, thereby killing the bacteria. Graphene oxide can also generate active free radicals, thereby achieving a bactericidal effect.

[0011] In addition, the phenolic hydroxyl groups in the magnolia ol molecule can form hydrogen bonds with the hydroxyl and epoxy groups on the surface of graphene oxide, thereby enhancing the binding force between graphene oxide and magnolia ol, improving the stability of graphene oxide in the antibacterial fiber membrane, enhancing the stability of the antibacterial fiber membrane layer, and improving the mechanical properties of the fabric.

[0012] In addition, the oxygen-containing functional groups of graphene oxide can form hydrogen bonds with the polar groups in the molecular chain of polylactic acid-glycolic acid copolymer, thereby improving the binding force between graphene oxide and polylactic acid-glycolic acid copolymer, thereby improving the stability of magnolia officinalis embedded or loaded into polylactic acid-glycolic acid copolymer, thereby improving the stability of the antibacterial fiber membrane layer, and further playing a positive role in improving the mechanical properties of the fabric.

[0013] Preferably, the mass ratio of honokiol, graphene oxide and polylactic acid-glycolic acid copolymer is (0.16-0.20):(0.11-0.13):1.

[0014] By adopting the above technical scheme, the mass ratio of magnolol, modified graphene oxide and polylactic acid-glycolic acid copolymer is controlled within the above range, thereby effectively improving the antibacterial property and stability of the antibacterial fiber membrane layer.

[0015] Preferably, the graphene oxide is prepared by modification, and the modification preparation method of the graphene oxide comprises the following steps: Graphene oxide is added into deionized water, stirred evenly, and a graphene oxide dispersion is obtained; sodium dodecylbenzene sulfonate is then added, stirred evenly, and then centrifuged and dried to obtain modified graphene oxide.

[0016] By adopting the above technical solution, sodium dodecylbenzene sulfonate, as an anionic surfactant, repels the negatively charged graphene oxide and prevents the agglomeration of graphene oxide due to steric hindrance, thereby improving the dispersibility of graphene oxide.

[0017] Preferably, the mass ratio of graphene oxide to sodium dodecylbenzene sulfonate is 1:(0.34-0.42).

[0018] By adopting the above technical solution, the mass ratio of graphene oxide and sodium dodecylbenzene sulfonate is controlled within the above range, which helps to improve the dispersibility of graphene oxide.

[0019] Preferably, the polyester fiber is prepared by modification, and the modification preparation method of the polyester fiber comprises the following steps: The polyester fiber is immersed in a sodium hydroxide solution to react, and after the reaction is completed, it is washed and dried to obtain a modified polyester fiber.

[0020] By adopting the above technical solution, the polyester fibers are treated with sodium hydroxide, which increases the roughness of the polyester fiber surface, thereby increasing the bonding force between the polyester fibers and effectively improving the stability of the fabric body.

[0021] In addition, alkali treatment can open the crystalline areas of cellulose molecules, exposing more hydroxyl groups, thereby increasing the hydroxyl content on the surface of polyester fibers. Both graphene oxide and polylactic acid-glycolic acid copolymers contain hydroxyl groups, which improve the bonding force between the antibacterial fiber membrane and the fabric body through hydrogen bonding, thereby improving the mechanical properties of the fabric.

[0022] Preferably, the concentration of the sodium hydroxide solution is 0.17-0.27 mol / L.

[0023] In a second aspect, the present application provides a preparation process of an antibacterial fabric as in the first aspect, which adopts the following technical solution: The polyester fibers are woven into a fabric body; the antibacterial fiber membrane layer is then compounded with the fabric body; and finally the composite fabric body and the antibacterial fiber membrane layer are roll-cured by hot pressing to obtain the antibacterial fabric.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. By combining polylactic acid-co-glycolic acid and honokiol to prepare an antibacterial fiber membrane layer, honokiol can be embedded or loaded into polylactic acid-co-glycolic acid to inhibit the growth of bacteria and play a good antibacterial role. The antibacterial fiber membrane layer prepared by electrospinning has a large specific surface area, which can realize the release of honokiol, thereby achieving better and lasting antibacterial performance of honokiol on fabrics.

[0025] 2. Graphene oxide improves the antibacterial properties of the antibacterial fiber membrane layer through its own antibacterial effect, and graphene oxide can form hydrogen bonds with magnolol and polylactic acid-glycolic acid copolymer, enhancing the binding force between graphene oxide, magnolol and polylactic acid-glycolic acid copolymer, thereby improving the stability of the antibacterial fiber membrane and further improving the mechanical properties of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an antibacterial fabric in an embodiment of the present application.

[0027] Description of reference numerals: 1. Fabric body; 2. Antibacterial fiber membrane layer. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 This application is described in further detail.

[0029] The present application embodiment discloses an antibacterial fabric. Figure 1 The antibacterial fabric includes a fabric body 1, which is woven from polyester fibers. An antibacterial fiber membrane layer 2 is provided on the fabric body 1. The raw materials involved in this application can be obtained commercially, among which magnolol (CAS No.: 35354-74-6) is provided by Guangzhou Hecheng Sansheng Biotechnology Co., Ltd., and polylactic acid-glycolic acid copolymer (CAS No.: 26780-50-7) is provided by Zhejiang Hunda Biotechnology Co., Ltd.

[0030] Example 1 The method for preparing the antibacterial fiber membrane layer comprises the following steps: 0.18g of honokiol was added to 20g of hexafluoroisopropanol solution, and then 1g of polylactic acid-co-glycolic acid was added after stirring evenly. The mixture was stirred in a 55°C oil bath, and then the antibacterial fiber membrane layer was prepared by electrospinning equipment. (The receiving distance of the electrospinning equipment was 10cm, the positive voltage was 17kV, the negative voltage was 0.8kV, and the spinning speed was 1mL / h.) The preparation method of the antibacterial fabric comprises the following steps: The polyester fibers are woven into a fabric body; the antibacterial fiber membrane layer is then compounded with the fabric body; and finally the composite fabric body and the antibacterial fiber membrane layer are roll-cured by hot pressing to obtain the antibacterial fabric.

[0031] (The temperature of hot pressing and laminating is 100°C and the pressure of hot pressing and laminating is 1MPa.) Example 2 The method for preparing the antibacterial fiber membrane layer comprises the following steps: 0.18g of honokiol and 0.12g of graphene oxide were added to 20g of hexafluoroisopropanol solution, stirred evenly, and then 1g of polylactic acid-co-glycolic acid was added, stirred in a 55°C oil bath, and then the antibacterial fiber membrane layer was made through an electrospinning device. (The receiving distance of the electrospinning device was 10cm, the positive voltage was 17kV, the negative voltage was 0.8kV, and the spinning speed was 1mL / h.) The preparation method of the antibacterial fabric comprises the following steps: The polyester fibers are woven into a fabric body; the antibacterial fiber membrane layer is then compounded with the fabric body; and finally the composite fabric body and the antibacterial fiber membrane layer are roll-cured by hot pressing to obtain the antibacterial fabric.

[0032] (The temperature of hot pressing and laminating is 100°C and the pressure of hot pressing and laminating is 1MPa.) Example 3 The method for preparing the antibacterial fiber membrane layer comprises the following steps: 0.16g of honokiol and 0.13g of graphene oxide were added to 20g of hexafluoroisopropanol solution, stirred evenly, and then 1g of polylactic acid-co-glycolic acid was added, stirred in a 55°C oil bath, and then the antibacterial fiber membrane layer was made through an electrospinning device. (The receiving distance of the electrospinning device was 10cm, the positive voltage was 17kV, the negative voltage was 0.8kV, and the spinning speed was 1mL / h.) The preparation method of the antibacterial fabric comprises the following steps: The polyester fibers are woven into a fabric body; the antibacterial fiber membrane layer is then compounded with the fabric body; and finally the composite fabric body and the antibacterial fiber membrane layer are roll-cured by hot pressing to obtain the antibacterial fabric.

[0033] (The temperature of hot pressing and laminating is 100°C and the pressure of hot pressing and laminating is 1MPa.) Example 4 The method for preparing the antibacterial fiber membrane layer comprises the following steps: 0.20g of honokiol and 0.11g of graphene oxide were added to 20g of hexafluoroisopropanol solution, stirred evenly, and then 1g of polylactic acid-co-glycolic acid was added, stirred in a 55°C oil bath, and then the antibacterial fiber membrane layer was made through an electrospinning device. (The receiving distance of the electrospinning device was 10cm, the positive voltage was 17kV, the negative voltage was 0.8kV, and the spinning speed was 1mL / h.) The preparation method of the antibacterial fabric comprises the following steps: The polyester fibers are woven into a fabric body; the antibacterial fiber membrane layer is then compounded with the fabric body; and finally the composite fabric body and the antibacterial fiber membrane layer are roll-cured by hot pressing to obtain the antibacterial fabric.

[0034] (The temperature of hot pressing and laminating is 100°C and the pressure of hot pressing and laminating is 1MPa.) Example 5 The difference between Example 5 and Example 2 is that the mass ratio of honokiol, graphene oxide, and polylactic acid-glycolic acid copolymer is 0.12:0.12:1.

[0035] Example 6 The difference between Example 6 and Example 2 is that the mass ratio of honokiol, graphene oxide, and polylactic acid-glycolic acid copolymer is 0.24:0.12:1.

[0036] Example 7 The difference between Example 7 and Example 2 is that the mass ratio of honokiol, graphene oxide, and polylactic acid-glycolic acid copolymer is 0.18:0.09:1.

[0037] Example 8 The difference between Example 8 and Example 2 is that the mass ratio of magnolol, graphene oxide, and polylactic acid-glycolic acid copolymer is 0.18:0.15:1.

[0038] Example 9 The difference between Example 9 and Example 2 is that the graphene oxide is prepared by modification, and the modification preparation method of the graphene oxide comprises the following steps: 10 g of graphene oxide was added to 60 g of deionized water, and ultrasonicated for 40 min at a power of 380 W, a frequency of 80 kHz, and a temperature of 40° C. to obtain a graphene oxide dispersion; 3.4 g of sodium dodecylbenzene sulfonate was then added, and after ultrasonic dispersion, the mixture was centrifuged using a centrifuge (the speed of the centrifuge was 8000 r / min), and finally dried in a vacuum oven at 80° C. for 12 h to obtain a modified graphene oxide.

[0039] Example 10 The difference between Example 10 and Example 2 is that the graphene oxide is prepared by modification, and the modification preparation method of the graphene oxide comprises the following steps: 10 g of graphene oxide was added to 60 g of deionized water, and ultrasonicated for 40 min at a power of 380 W, a frequency of 80 kHz, and a temperature of 40° C. to obtain a graphene oxide dispersion; 4.2 g of sodium dodecylbenzene sulfonate was then added, and after ultrasonic dispersion, the mixture was centrifuged using a centrifuge (the speed of the centrifuge was 8000 r / min), and finally dried in a vacuum oven at 80° C. for 12 h to obtain a modified graphene oxide.

[0040] Embodiment 11 The difference between Example 11 and Example 2 is that the graphene oxide is prepared by modification, and the modification preparation method of the graphene oxide comprises the following steps: 10 g of graphene oxide was added to 60 g of deionized water, and ultrasonicated for 40 min at a power of 380 W, a frequency of 80 kHz, and a temperature of 40° C. to obtain a graphene oxide dispersion; 3.8 g of sodium dodecylbenzene sulfonate was then added, and after ultrasonic dispersion, the mixture was centrifuged using a centrifuge (the speed of the centrifuge was 8000 r / min), and finally dried in a vacuum oven at 80° C. for 12 h to obtain a modified graphene oxide.

[0041] Example 12 The difference between Example 12 and Example 11 is that the mass ratio of graphene oxide to sodium dodecylbenzene sulfonate is 1:0.24.

[0042] Embodiment 13 The difference between Example 13 and Example 11 is that the mass ratio of graphene oxide to sodium dodecylbenzene sulfonate is 1:0.52.

[0043] Embodiment 14 The difference between Example 14 and Example 11 is that the polyester fiber is prepared by modification, and the modification preparation method of the polyester fiber comprises the following steps: The polyester fiber was immersed in a sodium hydroxide solution (sodium hydroxide concentration 0.17 mol / L) at a bath ratio of 1:20, and reacted at 90°C for 50 minutes. After the reaction, it was washed with deionized water and then placed in an oven at 115°C for drying.

[0044] Embodiment 15 The difference between Example 15 and Example 14 is that the concentration of sodium hydroxide is 0.27 mol / L.

[0045] Example 16 The difference between Example 16 and Example 14 is that the concentration of sodium hydroxide is 0.22 mol / L.

[0046] Comparative Example 1 The difference between Comparative Example 1 and Example 2 is that the method for preparing the antibacterial fiber membrane layer comprises the following steps: 0.12g of graphene oxide was added to 20g of hexafluoroisopropanol solution, stirred evenly, and then 1g of polylactic acid-glycolic acid copolymer was added, stirred in a 55°C oil bath, and then the antibacterial fiber membrane layer was made through an electrospinning device. (The receiving distance of the electrospinning device was 10cm, the positive voltage was 17kV, the negative voltage was 0.8kV, and the spinning speed was 1mL / h.) Performance testing: 1. Antibacterial The fabrics prepared by Examples 1-16 and Comparative Example 1 were sampled, and after washing, bacteria (Staphylococcus aureus) were implanted in each size (50 cm×50 cm), and the samples were tested for antibacterial properties. The test results are recorded in Table 1, where the higher the antibacterial rate, the better the antibacterial effect of the fabric.

[0047] 2. Tensile properties The fabrics prepared by Examples 1-16 and Comparative Example 1 were sampled (50 cm×50 cm), tested with reference to GB / T14343-2008, and the test results were recorded in Table 1, where the higher the breaking strength, the better the tensile properties of the fabric.

[0048] Table 1 sample Antibacterial rate (%) <![CDATA[Tensile strength (cN·dtex -1 )]]> Example 1 92.5 2.31 Example 2 96.2 4.57 Example 3 96.1 4.53 Example 4 96.1 4.55 Example 5 95.5 4.32 Example 6 95.6 4.34 Example 7 95.5 4.30 Example 8 95.4 4.33 Example 9 99.5 5.32 Example 10 99.6 5.31 Embodiment 11 99.8 5.34 Example 12 99.1 5.17 Embodiment 13 99.1 5.18 Embodiment 14 99.8 7.42 Embodiment 15 99.7 7.41 Example 16 99.8 7.44 Comparative Example 1 91.8 2.28 Data analysis Specifically combining the test results of Example 2 and Example 1, the antibacterial rate and breaking strength of Example 2 are higher than those of Example 1. The analysis is as follows: the difference between Example 2 and Example 1 is that the antibacterial fiber membrane layer also contains graphene oxide, and graphene oxide has an antibacterial effect, so that the antibacterial property of the antibacterial fiber membrane is improved, thereby improving the antibacterial performance of the fabric. In addition, graphene oxide can form hydrogen bonds with magnolol and polylactic acid-glycolic acid copolymer to improve the stability of the antibacterial fiber membrane, thereby improving the mechanical properties of the fabric.

[0049] Specifically combining the test results of Example 11 and Example 2, the antibacterial rate and breaking strength of Example 11 are higher than those of Example 2. The analysis is as follows: the difference between Example 11 and Example 2 is that the graphene oxide is modified by sodium dodecylbenzene sulfonate, which improves the dispersibility of the graphene oxide, thereby improving the interaction between graphene oxide, magnolol, and polylactic acid-glycolic acid copolymer, thereby improving the antibacterial and stability of the antibacterial fiber membrane, and effectively improving the antibacterial and mechanical properties of the fabric.

[0050] Specifically combining the test results of Example 16 and Example 11, the breaking strength of Example 16 is higher than that of Example 11. The analysis is as follows: the difference between Example 11 and Example 2 is that the bonding force between the antibacterial fiber membrane and the fabric body is improved by alkali treatment of the polyester fiber, thereby improving the mechanical properties of the fabric.

[0051] Specifically combining the test results of Example 2 and Comparative Example 1, the antibacterial rate and breaking strength of Example 2 are higher than those of Comparative Example 1. The analysis is as follows: the difference between Example 2 and Example 2 is that the antibacterial fiber membrane layer also contains magnolia officinalis, which has antibacterial and antioxidant effects, so that the antibacterial property of the antibacterial fiber membrane is improved, thereby improving the antibacterial performance of the fabric. In addition, magnolia officinalis can form hydrogen bonds with graphene oxide, so that the stability of the antibacterial fiber membrane is improved, thereby improving the mechanical properties of the fabric.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An antibacterial fabric, characterized in that: The invention comprises a fabric body (1), wherein the fabric body (1) is woven from polyester fibers, an antibacterial fiber membrane layer (2) is arranged on the fabric body (1), and a method for preparing the antibacterial fiber membrane layer comprises the following steps: Honokiol was added to the hexafluoroisopropanol solution and stirred evenly, then polylactic acid-glycolic acid copolymer was added and stirred evenly, and then an antibacterial fiber membrane layer was prepared through an electrospinning device.

2. The antibacterial fabric according to claim 1, characterized in that: Graphene oxide is also added during the preparation process of the antibacterial fiber membrane layer. The preparation method of the antibacterial fiber membrane layer comprises the following steps: Honokiol and graphene oxide were added to a hexafluoroisopropanol solution and stirred evenly. Then, polylactic acid-glycolic acid copolymer was added and stirred evenly. Then, an antibacterial fiber membrane layer was made through an electrospinning device.

3. The antibacterial fabric according to claim 2, characterized in that: The mass ratio of honokiol, graphene oxide and polylactic acid-glycolic acid copolymer is (0.16-0.20):(0.11-0.13):

1.

4. The antibacterial fabric according to claim 2, characterized in that: The graphene oxide is prepared by modification, and the modification preparation method of the graphene oxide comprises the following steps: Graphene oxide is added into deionized water, stirred evenly, and a graphene oxide dispersion is obtained; sodium dodecylbenzene sulfonate is then added, stirred evenly, and then centrifuged and dried to obtain modified graphene oxide.

5. The antibacterial fabric according to claim 4, characterized in that: The mass ratio of the graphene oxide to sodium dodecylbenzene sulfonate is 1:(0.34-0.42).

6. The antibacterial fabric according to claim 2, characterized in that: The polyester fiber is prepared by modification, and the modification preparation method of the polyester fiber comprises the following steps: The polyester fiber is immersed in a sodium hydroxide solution to react, and after the reaction is completed, it is washed and dried to obtain a modified polyester fiber.

7. The antibacterial fabric according to claim 6, characterized in that: The concentration of the sodium hydroxide solution is 0.17-0.27 mol / L.

8. A process for preparing the antibacterial fabric according to claim 1, characterized in that: The steps include: The polyester fibers are woven into a fabric body; the antibacterial fiber membrane layer is then compounded with the fabric body; and finally the composite fabric body and the antibacterial fiber membrane layer are roll-cured by hot pressing to obtain the antibacterial fabric.

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