KR100910241B1 - Nanofibers comprising naturalplant extract or naturalplant essential oil and method for producing the same - Google Patents

Abstract

The present invention comprises (a) at least one component selected from vegetable natural extracts and vegetable natural essential oils, (b) at least one fiber-forming polymer, and (c) components (a) and (b). It relates to a nanofiber containing a vegetable natural extract or a vegetable natural essential oil prepared by electrospinning a spinning solution mixed with a soluble solvent.

Natural extracts, natural essential oils, fiber-forming polymers, electrospinning, nanofibers

Description

NANOFIBERS COMPRISING NATURALPLANT EXTRACT OR NATURALPLANT ESSENTIAL OIL AND METHOD FOR PRODUCING THE SAME

The present invention relates to a nanofiber containing a vegetable natural extract or a vegetable natural essential oil and a method for producing the same.

Recently, as life patterns change in the direction of well-being (LOHAS), social awareness of environmental pollutants such as sick house syndrome, atopy, and allergies is increasing. Accordingly, there is a growing trend toward various needs for natural materials or natural extracts that are harmless to the human body and are environmentally friendly and hygienic.

In order to maximize the usefulness and usefulness of natural materials or natural extracts, their functions must be secured through atomization, nanonization, dispersion, and complexation of useful materials. Natural extracts or natural essential oils have excellent flavor, antifungal, antimicrobial, bactericidal, insecticidal, antiviral, anticancer properties, and various packaging materials, natural fungicides, insecticides, processed materials for clothing, Applications are being carried out in various forms such as health supplements.

Currently, the subjects studied as natural extracts include cinnamon family of camphor tree, phytoncide family derived from cypress or pine tree and cedar family, saponin of ginseng family, ginseng (ginsenoside) family and camellia family. Studies on the use of various plant natural extracts and natural essential oils, such as catechin family, grapefruit extract of the fennel family, rowancho extract of the pomegranate family, mugwort extract and herb extract of the Asteraceae family, are being actively conducted.

As a result of the previous research, the Republic of Korea registered and published patent publication 10-0646581, 10-2005-0098548, 10-2006-026213, 10-2007-0006295, 10-2007-0065927, 20-0372790, 10-2007-0006295 Various effective vegetable natural extracts or natural essential oils and the like are disclosed.

In textiles as well, antibacterial, deodorant, healing (healing, healing) effect has been increasing the demand for emotional fiber reinforced functional. For example, plant natural extracts, plant oils, fragrances, etc. are made into microcapsules and attached to the surface of the fiber to make the capsules burst by friction during use. It is marketed as a product. However, studies to date on fibers containing natural extracts or natural essential oils are insignificant.

Melt spinning may be considered as a method of producing fibers containing natural extracts or natural essential oils. However, the spinning temperature of the molten spinning, which melts the polymer at a temperature above the melting point and extrudes it through a nozzle at a temperature of about 30 to 50 ° C. above the melting point, stretches, solidifies, and fiberizes, melts the polymer. Depending on the temperature range of 200 ~ 450 ℃ usually because of the volatilization, decomposition, transformation and alteration of the plant natural extract or natural essential oils, there is a problem that their performance is not fully exhibited.

In addition, in the case of a polymer that is deformed or decomposed by heat, solution spinning may be used to fiberize using a solvent. A polymer solution having a spinning area is prepared by dissolving a polymer to be fiberized in a solvent. After extrusion, stretching and solidifying through a nozzle is a method of fiberizing. In this method, certain constraints follow because the compatibility between natural extracts or natural essential oils and polymer solutions and the spinning conditions without trimming are important variables. Even if spinning was successful, the fabrics produced had a fiber diameter ranging from tens of micrometers to hundreds of micrometers, similar to melt spinning, so that many of the natural extracts were contained inside the fiber and thus did not exhibit sufficient performance and function of the extract. have.

In addition, there is a method of applying a natural extract or a natural essential oil directly to the fabric (Republic of Korea Patent Registration 10-0726409, Republic of Korea Patent Registration 10-0515808) and a microcapsule (micro capsule) to a method of attaching to the surface of the fiber, but In this case, there is a problem in that the nature of sufficient natural extracts cannot be exerted due to the rapid reduction of the effect of desorption of the natural extracts applied or adhered in the environment such as friction, washing or light exposure, and the effect of the binder during application.

The present invention solves the above problems of the prior art, i) the useful effect of the vegetable natural extract or vegetable natural essential oil is expressed in the fiber as it is without being lost by the conditions of the manufacturing process, such as high temperature, ii) Due to the large surface area of the fiber, the amount of the vegetable natural extract or vegetable natural essential oil contained in the fiber and exhibiting no effect is relatively small. I) By using the solution spinning method, the vegetable natural extract or the vegetable natural essential oil has a surface of the fiber. An object of the present invention is to provide a nanofiber containing a vegetable natural extract or a vegetable natural essential oil and a method for producing the same, which are uniformly distributed and firmly bonded thereto.

The present invention comprises (a) at least one component selected from vegetable natural extracts and vegetable natural essential oils, (b) at least one fiber-forming polymer, and (c) components (a) and (b). Provided are nanofibers containing a vegetable natural extract or a vegetable natural essential oil prepared by electrospinning a spinning solution mixed with a soluble solvent.

Nanofibers containing the vegetable natural extract or vegetable natural essential oil may further comprise a compatibilizer, if necessary.

The invention also includes (a) 1 selected from the group of plants belonging to the camphoraceae, cypressaceae, pineaceae, cedaraceae, arboraceae, green tea, camellia, cedar, unfertilize, rosaceae, pomegranate, asteraceae, and herbaceae. Obtaining vegetable natural extracts or vegetable natural essential oils from water or organic solvents using water or organic solvents;

(b) preparing a spinning solution by mixing at least one component selected from the vegetable natural extract and vegetable natural essential oil obtained above, at least one fiber-forming polymer, and a solvent capable of dissolving them;

(c) supplying the spinning solution to an electrospinning nozzle and applying a high voltage to perform electrospinning; And

(d) a plant natural extract comprising a post-treatment step of performing one or more steps selected from the group consisting of heat setting, ultrasonication, plasma treatment, corona discharge treatment, and calendering treatment of the nanofibers prepared by electrospinning, or It provides a method for producing nanofibers containing vegetable natural essential oils.

The spinning solution of step (b) may further comprise a compatibilizer, if necessary.

The present invention is that the useful effect of the vegetable natural extract or vegetable natural essential oil is expressed in the fiber as it is without being lost by the conditions of the manufacturing process, such as high temperature, ii) is included in the fiber because of the large surface area of the fiber It is efficient because the amount of vegetable natural extract or vegetable natural essential oil that does not produce an effect is relatively small. (Iii) The vegetable natural extract or vegetable natural essential oil is uniformly distributed on the fiber surface and firmly bound by the fiber spinning method. Provided are nanofibers containing extracts or vegetable natural essential oils and methods for their preparation.

Nanofibers containing the plant natural extract or vegetable natural essential oil of the present invention not only have excellent performance and function, such as antibacterial, deodorant, freshness maintenance, sterilization, antiseptic activity, but also does not harm the human body with flavor, virus or bacteria It also has the features of blocking the invasion of water, moisture permeation, and waterproofing, so that all kinds of functional agricultural and fisheries packaging materials, clothing for atopy treatment, architectural super medium, beauty and cosmetic functional nanofibers, medical patches, and functional health supplements It can be usefully used in the field.

The present invention is capable of dissolving at least one component selected from (a) vegetable natural extracts and vegetable natural essential oils, (b) at least one fiber-forming polymer, and (c) components (a) and (b). The present invention relates to a nanofiber containing a vegetable natural extract or a vegetable natural essential oil prepared by electrospinning a spinning solution prepared by mixing a solvent.

(A) As a raw material of the vegetable natural extract or vegetable natural essential oil, camphor family, cypressaceae, pine family, cedar family, arboraceae, green tea family, camellia family, cedar, family tree, Unhyang family, pomegranate, rose family, asteraceae, etc. And at least one plant selected from the group of plants belonging thereto, and in particular, plant natural extracts or plant natural essential oils can be obtained from branches, leaves, fruits, roots, and the like of such plants.

In the above (b) one or more fiber-forming polymers may be thermoplastic or thermosetting, biocompatible polymers and the like, preferably polyurethane (PU), polyacrylonitrile (PAN), nylon (Nylon 6, 66) , Polylactic acid (PLA), polycarbonate (PC), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVdF), polyvinyl alcohol (PVA), polystyrene oxide (PEO), polystyrene (PS), poly Vinylcarbazole (PVC), polyvinylpiolidine (PVP), polyamide, polybenzylimidazole (PBI), polyethylene terephthalate (PET), and polyester (PE) Can be.

(C) As the solvent capable of dissolving the vegetable natural extract or vegetable natural essential oil and the at least one fiber-forming polymer, dichloromethane (DCM), DMF (N, N-dimethylformamide), DMA (dimethyl acetamide) and NMP ( N-methyl-2-pyrrolidinone, DMSO (dimethyl sulfoxide), THF (tetra-hydrofuran), EC (ethylene carbonate), DEC (diethyl carbonate), DMC (dimethyl carbonate), EMC (ethyl methyl carbonate), PC (propylene carbonate), and acetone, alcohols, alcohols, and the like.

In the present invention, (a) at least one component selected from vegetable natural extracts and vegetable natural essential oils is preferably contained in an amount of 0.01 to 50 parts by weight based on 100 parts by weight of the (b) one or more fiber-forming polymer solids. If the amount is less than 0.01 parts by weight, it is difficult to express useful effects of the plant natural extract or vegetable natural essential oil, and if it exceeds 50 parts by weight, electrospinning such as viscosity and surface tension may not occur smoothly in electrospinning. .

As a compatibilizer used to improve the compatibility of the (a) at least one component selected from the plant natural extracts and vegetable natural essential oils and (b) at least one fiber-forming polymer, or usability between the fiber-forming polymers Can be used as commonly used in the art, for example, poly (cis-1,4-isoprene-b-1,4-butadiene) [Poly (cis-1,4-isoprene-b-1, 4 butadiene)], poly (styrene-b-ethylene) [Poly (styrene-b-ethylene)], ethylene-propylene-diene copolymer (EPDM), natural rubber (NR), butyl rubber (BR), acrylonitrile Butadiene-styrene (ABS), styrene-butadiene-styrene (SBS), chlorinated polyethylene (CPE), acrylonitrile-chlorinated polyethylene-styrene (ACS), high impact polystyrene (HIPS), poly Urethane (PU) and the like. These compatibilizers can be used 1 type or in mixture of 2 or more types, and can be used in 1-10 weight part with respect to 100 weight part of (b) 1 or more types of fiber forming polymer solid content.

Nanofibers containing the vegetable natural extract or vegetable natural essential oil of the present invention may be prepared, if necessary, further comprises components commonly used in solution spinning, such as anionic surfactants, dispersants.

The nanofibers containing the plant natural extract or the plant natural essential oil of the present invention are preferably prepared by controlling the fiber diameter to less than 1 μm in consideration of the surface area of the nanofibers, various uses, and the like.

The present invention also provides

(a) water from at least one plant selected from the group of plants belonging to the family Camphoraceae, Cypressaceae, Pineaceae, Cedaraceae, Elmaceae, Green Tea, Camellia, Black Pepper, Encyclopedia, Rosaceae, Pomegranate, Asteraceae, and Herbs Or obtaining a vegetable natural extract or a vegetable natural essential oil using an organic solvent;

(b) preparing a spinning solution by mixing at least one component selected from the vegetable natural extract and vegetable natural essential oil obtained above, at least one fiber-forming polymer, and a solvent capable of dissolving them;

(c) supplying the spinning solution to an electrospinning nozzle and applying a high voltage to perform electrospinning; And

(d) vegetable natural comprising a post-treatment step of performing at least one selected from the group consisting of heat setting, sonication, plasma treatment, corona discharge treatment, and calendering treatment of the nanofibers prepared by electrospinning. It relates to a method for producing nanofibers containing extracts or vegetable natural essential oils.

In the step (a), the plant natural extract may be extracted by a method commonly used in this field, such as a solvent extract method or a supercritical extract method. For example, mixing the water or the organic solvent in the extraction raw material 5 to 10 times and warm, pressurized to extract the active ingredient; Removing the solid residue from the solution containing the extract obtained in the step and distilling under reduced pressure to concentrate the active ingredient; And evaporating water or an organic solvent from the concentrate obtained in the above step to obtain an extract of a solid phase.

The organic solvent may be one, or a mixture of two or more selected from the group consisting of methanol, ethanol, dimethylformamide, dimethylacetamide, tetrahydrofuran, hexane, benzene, dichloromethane, acetic acid, and the like. The water or organic solvent contained in the concentrate is evaporated using a conventional method such as a dryer, hot air circulation, evaporation, freeze drying, or the like to obtain a solid extract or raw material.

In the step (c), electrospinning can be carried out using a commonly known method or the like, and is usually performed at a voltage of 5 kV to 100 kV, and the residual solvent in the obtained nanofibers is removed by drying under reduced pressure. The shape of the nanofibers obtained by electrospinning may be in the form of a nonwoven fabric.

In the step (d), the post-treatment steps such as heat setting, ultrasonic treatment, plasma treatment, corona discharge treatment, and calendering treatment are performed at a temperature range of 50 to 200 ° C. where natural extracts or natural essential oils do not volatilize, decompose or deform. It is preferable. The procedure of the manufacturing method of this invention is illustrated in FIG.

Nanofibers containing the plant natural extract or vegetable natural essential oil of the present invention not only have excellent performance and function, such as antibacterial, deodorant, freshness maintenance, sterilization, antiseptic activity, but also does not harm the human body with flavor, virus or bacteria All types of functional agricultural and fisheries packaging materials, clothing for atopic dermatitis, architectural super medium, cosmetic and cosmetic functional nanofibres, medical patches, and functional health supplements This can be useful in. Functional health supplement in the above means a nanofiber of the present invention prepared to be edible.

Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention is not limited to the Examples and the like described below.

Example  One.

Dried epidermis of camphor tree and dried finely pulverized cinnamon powder (Fig. 2) immersed in 1L of ethanol (methanol) and extracted for 12 hours while maintaining the temperature of 60 ℃ in the extraction vessel equipped with reflux cooler It was. After the extraction was completed, the solids were removed using a vacuum separator attached with a porous filter and only the extraction solution was separated. Ethanol was recovered from the solution thus separated using an evaporator to obtain soluble cinnamon powder as a residual solid.

Example  2.

The soluble cinnamon powder prepared by the method of Example 1 was mixed to 1, 5, 10, 20 parts by weight with respect to 100 parts by weight of polylactic-axis (PLA) polymer solids, respectively, solvents DCM (dichloromethane) and DMF (dimethylformamide). ) Was mixed at a weight ratio of 7: 3, and the spinning solution was prepared so that the concentration of the total solution was 15%. The spinning solution prepared in this way was connected to the spinneret, and the applied voltage was 50kV, the distance between the spinneret and the current collector was 30 cm, and the electrospinning was carried out while discharging at 0.1 to 1 cc / g per hole. A nanofiber nonwoven fabric was obtained. A scanning electron micrograph of PLA nanofibers containing 5 parts by weight of cinnamon extract based on 100 parts by weight of polylactic Axis (PLA) is shown in FIG. 3. In the case of the PLA nanofibers, the diameter was mostly composed of less than 1㎛ and was composed of an average of 500nm.

Example  3.

The cypress and Cypress leaves were washed with water, dried carefully, finely pulverized to less than 1 mm, and then 100 g were immersed in 1 L of a mixture of methanol and DMF (dimethylformamide) in a weight ratio of 1: 1, and an extraction vessel with a reflux condenser was attached. Extraction was carried out for 12 hours while maintaining a temperature of 40 ℃. After the extraction was completed, the solids were removed using a vacuum separator attached with a porous filter and only the extraction solution was separated. From this separated solution, methanol and DMF were recovered using an evaporation and a dryer to obtain a soluble cypress extract of residual solids.

Example  4.

The soluble cypress extract prepared by the method of Example 3 was mixed to 100 parts by weight of thermoplastic polyurethane (TPU) solids, 1, 5, and 10 parts by weight, respectively, and then DMF and THF were added in a weight ratio of 3: 2. The total concentration of the mixed solvent was 15%, followed by stirring at 60 ° C for 12 hours to prepare a spinning solution. The solution thus prepared was electrospun in the same manner as in Example 2 to obtain a cypress extract-containing polyurethane nanofiber nonwoven fabric. The scanning electron micrograph of the TPU nanofiber containing 5 weight part of cypress extracts with respect to 100 weight part of thermoplastic polyurethanes (TPU) is shown in FIG. In this case, most of the obtained nanofibers were obtained with a diameter of less than 1 μm, and as the content of the cypress extract increased, the diameter of the nanofibers decreased. The average diameter was about 500 nm.

Comparative example  One.

PLA was mixed with a solvent in which DCM (dichloromethane) and DMF (dimethylformamide) were mixed at a weight ratio of 7: 3 to prepare a spinning solution having a concentration of 15% of the total solution. The spinning solution thus prepared was electrospun in the same manner as in Example 2 to obtain a PLA nanofiber nonwoven fabric.

Comparative example  2.

The thermoplastic polyurethane (TPU) was mixed with a solvent in which DMF and THF were mixed at a weight ratio of 3: 2, and the total concentration was 15%, followed by stirring at 60 ° C for 12 hours to prepare a spinning solution. The spinning solution thus prepared was electrospun in the same manner as in Example 2 to obtain a polyurethane nanofiber nonwoven fabric.

Test Example  One.

Test standard for anthrax and gray mold fungus to evaluate the antifungal effect of PLA nanofibers containing 10 parts by weight of cinnamon extract prepared by the method of Example 2 and PLA nanofibers prepared by the method of Comparative Example 1 The antifungal effect test was carried out by the method of KS K 0693-2001. The strains used were inoculated with gray fungus and anthrax, Botrytis cinerea and Colletotrichum orbiculare, on 0.05% nonionic surfactant (Snogen) and incubated at 37 ° C for 24 hours. Table 1 compares the antifungal effects.

Target strain division Initial concentration Concentration after 18 hours Bacteriostatic reduction rate (%) Gray mold Comparative Example 1 4.5 × 10 ⁶ 2.1 × 10 ⁸ - Example 2 <2.0 × 10 ⁴ 99.9 Anthrax Comparative Example 1 4.1 × 10 ⁵ 2.0 × 10 ⁷ - Example 2 <2.0 × 10 ³ 99.9

Test Example  2.

The antibacterial test of the polyurethane nanofibers prepared by the method of Comparative Example 2 and the polyurethane nanofibers containing 10 parts by weight of the cypress extract prepared by the method of Example 4 by the method of test standard KS K 0693-2001 Was carried out. The strains used were inoculated on Staphylcoccus aureus ATCC 6538, a major cause of food poisoning, and pneumococcal pneumonia (Klebsiella pneumoniae ATCC 4352) on 0.05% nonionic surfactant (Snogen) and incubated at 37 ° C for 24 hours. The bacteria were used as inoculum. The antimicrobial test results are shown in Table 2.

Target strain division Initial concentration Concentration after 18 hours Bacteriostatic reduction rate (%) Staphylococcus aureus Comparative Example 1 2.6 × 10 ⁶ 1.2 × 10 ⁸ - Example 4 <2.0 × 10 ⁴ 99.9 Pneumococcal bacillus Comparative Example 1 3.0 × 10 ⁵ 1.4 × 10 ⁷ - Example 4 <2.0 × 10 ³ 99.9

Figure 1 shows a method for producing a nanofiber containing a vegetable natural extract or a vegetable natural essential oil of the present invention.

Figure 2 is a photograph of cinnamon powder finely divided by finely crushed and dried after drying the cinnamon tree of the camphor tree used in one embodiment of the present invention.

FIG. 3 is a scanning electron micrograph of PLA nanofibers containing 5 parts by weight of cinnamon extract based on 100 parts by weight of polylactic acid (PLA) prepared in Example 2 of the present invention.

Figure 4 is a scanning electron micrograph of the TPU nanofibers containing 5 parts by weight of Cypress extract with respect to 100 parts by weight of thermoplastic polyurethane (TPU) prepared in Example 4 of the present invention.

Claims (15)

at least one component selected from (a) a vegetable natural extract and a vegetable natural essential oil, (b) at least one fiber-forming polymer, and (c) components (a) and (b) Nanofibers containing a vegetable natural extract or a vegetable natural essential oil prepared by electrospinning the spinning solution mixed with a solvent. The method according to claim 1, wherein (a) the vegetable natural extract or vegetable natural essential oil is camphor family, cypressaceae, pine family, cedar family, arboraceae, green tea family, camellia family, cedar family, Unhyang family, Rosaceae, Pomegranate family, Asteraceae, and A nanofiber containing a phyto-natural extract or a phyto-natural essential oil, characterized in that it is obtained from at least one plant selected from the group of plants belonging to the herb family. The method according to claim 1, wherein (b) at least one fiber-forming polymer is polyurethane (PU), polyacrylonitrile (PAN), nylon (Nylon 6, 66), polylactic acid (PLA), polycarbonate (PC ), Polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVdF), polyvinyl alcohol (PVA), polyethylene oxide (PEO), polystyrene (PS), polyvinylcarbazole (PVC), polyvinylpiolidine (PVP), polyamide, polybenzylimidazole (PBI), polyethylene terephthalate (PET), and polyester (PE), the vegetable natural extract or vegetable natural essential oil Contains nanofibers. The solvent according to claim 1, wherein the solvent (c) capable of dissolving the components (a) and (b) is DMA (dimethyl acetamide), DMF (N, N-dimethylformamide), or NMP (N-methyl-2-pyrrolidinone). ), Dimethyl sulfoxide (DMSO), tetra-hydrofuran (THF), ethylene carbonate (EC), diethyl carbonate (DEC), dimethyl carbonate (DMC), ethyl methyl carbonate (EMC), propylene carbonate (PC), and acetone Nanofibers containing a vegetable natural extract or a vegetable natural essential oil, characterized in that the mixture is one or two or more selected from the group. The method according to claim 1, wherein (a) at least one component selected from plant natural extracts and plant natural essential oils is contained in an amount of 0.01 to 50 parts by weight based on 100 parts by weight of the (b) at least one fiber-forming polymer solids. Nanofibers containing vegetable natural extract or vegetable natural essential oil. The nanofiber containing natural extract or vegetable natural essential oil according to claim 1, wherein the spinning solution further comprises a compatibilizer. (a) from at least one plant selected from the group of plants belonging to the family Camphoraceae, Cypressaceae, Pineaceae, Cedaraceae, Elmaceae, Green Tea, Camellia, Black Pepper, Encyclopedia, Rosaceae, Pomegranate, Asteraceae, and Herbs Obtaining a vegetable natural extract or a vegetable natural essential oil using water or an organic solvent; (b) preparing a spinning solution by mixing at least one component selected from the vegetable natural extract and vegetable natural essential oil obtained above, at least one fiber-forming polymer, and a solvent capable of dissolving them; (c) supplying the spinning solution to an electrospinning nozzle and applying a high voltage to perform electrospinning; And (d) a plant natural extract comprising a post-treatment step of performing one or more steps selected from the group consisting of heat setting, ultrasonication, plasma treatment, corona discharge treatment, and calendering treatment of the nanofibers prepared by electrospinning, or Method for producing nanofibers containing vegetable natural essential oils. The method of claim 7, wherein the vegetable natural extract, the step of extracting the active ingredient by mixing water or an organic solvent 5 to 10 times to the raw material and heating, pressurizing; Removing the solid residue from the solution containing the extract obtained in the step and distilling under reduced pressure to concentrate the active ingredient; And evaporating water or an organic solvent from the concentrate obtained in the step to obtain an extract of a solid phase, the method of producing a nanofiber containing a vegetable natural extract or a vegetable natural essential oil. The organic solvent of claim 7 or 8, wherein the organic solvent is one or two selected from the group consisting of methanol, ethanol, dimethylformamide, dimethylacetamide, tetrahydrofuran, hexane, benzene, dichloromethane, and acetic acid. Method for producing a nano-fiber containing a vegetable natural extract or a vegetable natural essential oil, characterized in that the mixture. The post-treatment step of performing at least one selected from the group consisting of heat setting, ultrasonic treatment, plasma treatment, corona discharge treatment, and calendering treatment is performed at a temperature range of 50 to 200 ° C. A method for producing nanofibers containing a vegetable natural extract or a vegetable natural essential oil. 8. The method of claim 7, wherein the spinning solution of step (b) further comprises a compatibilizer. 9. The method according to claim 7, wherein the at least one fiber-forming polymer is polyurethane (PU), polyacrylonitrile (PAN), nylon (Nylon 6, 66), polylactic acid (PLA), polycarbonate (PC), poly Vinylidene chloride (PVDC), polyvinylidene fluoride (PVdF), polyvinyl alcohol (PVA), polyethylene oxide (PEO), polystyrene (PS), polyvinylcarbazole (PVC), polyvinylpiolidine (PVP) Nano containing vegetable natural extract or vegetable natural essential oil, characterized in that it is selected from the group consisting of polyamide, polybenzylimidazole (PBI), polyethylene terephthalate (PET), and polyester (PE) Method of making fibers. The method according to claim 7, wherein the vegetable natural extract and at least one component selected from vegetable natural essential oils, solvents capable of dissolving at least one fiber-forming polymer are DMA (dimethyl acetamide), DMF (N, N-dimethylformamide), NMP (N-methyl-2-pyrrolidinone), DMSO (dimethyl sulfoxide), THF (tetra-hydrofuran), EC (ethylene carbonate), DEC (diethyl carbonate), DMC (dimethyl carbonate), EMC (ethyl methyl carbonate), PC ( propylene carbonate), and a method for producing nanofibers containing a vegetable natural extract or a vegetable natural essential oil, characterized in that the mixture is one or two or more selected from the group consisting of acetone. The method according to claim 7, wherein the one or more components selected from vegetable natural extract and vegetable natural essential oil in the spinning solution of step (b) is contained in 0.01 to 50 parts by weight based on 100 parts by weight of the at least one fiber-forming polymer solids A method for producing nanofibers comprising a plant natural extract or a plant natural essential oil. A nanofiber comprising the vegetable natural extract of claim 1 or a vegetable natural essential oil used as a functional agricultural and fisheries packaging material, clothing for atopic dermatitis, architectural ultra medium, cosmetic and cosmetic functional fibers, medical patches, and functional health supplements.

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