Preparation method and application of biocompatible biomass yarn

Abstract

The present application is about a method for preparing biomass yarn with biocompatibility and its application, and relates to the field of textiles. The method comprises: pre-treating waste eggshell membranes to obtain eggshell membrane powder; dissolving the eggshell membrane powder in an aqueous solution and stirring it to obtain an eggshell membrane aqueous solution; adding a PEO polymer to the eggshell membrane aqueous solution and stirring it fully to obtain a spinning solution; electrospinning the spinning solution in an electrostatic spinning machine to obtain a nanofiber membrane; twisting the nanofiber membrane using a semi-automatic yarn twist meter to obtain a biomass yarn. The biomass yarn prepared in the present application has high strength, good tensile properties, and contains many bioactive substances. It has good biocompatibility and degradability, and plays an important role in moisturizing, anti-wrinkle, and improving metabolism of the skin. It is processed by textile technology to prepare home textile products such as eye masks, pillowcases, and pillowcases, and is applied to the textile field, which can achieve good effects of skin-friendly comfort, sterilization and deodorization, and health care.

Description

Technical Field

[0001] The present application relates to the field of textile technology, and in particular to a method for preparing biomass yarn with biocompatibility and its application. Background Art

[0002] my country is the country with the largest number of poultry farmers in the world, and its egg production ranks first in the world. With the increasing production and consumption of poultry eggs, the number of discarded eggshells is also increasing, which not only causes serious pollution to the environment, but also is an extreme waste of resources. These discarded eggshells contain hard egg shells and eggshell inner membranes with many effective ingredients, which are valuable raw materials for feed, medicine, food and other industries. Although some relatively mature research on eggshells has been carried out at home and abroad, such as the application of eggshell powder in food and medical fields, there is little research on the recovery and utilization of protein in the eggshell inner membrane.

[0003] The inner membrane of the eggshell (commonly known as "phoenix coat") is a fibrous biological film with a double-layer membrane structure located between the eggshell and the egg white. It has good air permeability, adsorption, moisture retention, stability and other characteristics. The eggshell membrane contains about 90% protein, 2% carbohydrates and 3% liposomes, of which the proteins are collagen, keratin, ovalbumin, lysozyme, etc. At present, eggshell membranes are widely used in the fields of medicine, light industry and daily cosmetics, such as promoting wound recovery and promoting smooth and delicate skin. At present, medical and health care textiles are generally in close contact with human skin, the fabric surface is relatively rough, and the skin affinity is poor, which is not conducive to the healing of wounds.

[0004] The eggshell membrane itself presents a relatively tight three-dimensional network structure, with good biocompatibility, biodegradability and the characteristics of promoting skin metabolism. The large fiber specific surface area gives it good adsorption. However, directly using the eggshell membrane on the human body surface will reduce its fit with the skin and reduce comfort. The eggshell membrane is brittle after drying, and its strength and durability are poor. In addition, the protein contained in the eggshell membrane will only show good functional properties in a dissolved state. The requirements for biomass activity, biocompatibility and biodegradability in the textile medical field are increasing, so there is a certain research value in the application of eggshell membrane in the textile field.

[0005] Electrospinning is a simple and efficient process for preparing polymer micro-nano fibers. It has the common advantages of low equipment and experimental costs, high fiber yield, and wide applicability. The prepared fibers have a three-dimensional spatial structure, large specific surface area, small pore size, high porosity and good continuity, and have attracted much attention in recent years.

[0006] Patent CN110592686B discloses a micro-nano composite membrane loaded with growth factors, which is composed of an eggshell membrane loaded with growth factors, a protein membrane, a hydrophilic micro-nano fiber layer and a hydrophobic micro-nano fiber layer. The eggshell membrane is used as a direct carrier of the growth factor, and the protein is deposited as a coating layer on the surface of the eggshell membrane loaded with growth factors by salting out to form a protein membrane, and then the hydrophilic micro-nano fiber membrane and the hydrophobic micro-nano fiber membrane are sequentially wrapped on the surface of the protein membrane by electrospinning technology; the protein membrane is obtained by salting out and depositing poultry egg white.

[0007] However, the composite membrane prepared in the above-mentioned prior art is relatively thick, which greatly reduces the comfortability, and the eggshell membrane used is brittle, which is not conducive to reuse, and has poor biocompatibility, and its application in the textile field has not been studied. Electrospinning is a simple and efficient process for preparing polymer micro-nano fibers. It has the common advantages of low equipment and experimental costs, high fiber yield, and wide applicability. The prepared fibers have a three-dimensional spatial structure, a large specific surface area, a small pore size, a high porosity and good continuity, and have attracted much attention in recent years. In the related art, there is no description of the preparation method of biocompatible biomass yarn prepared by electrospinning process and its application in the textile field. Therefore, it is necessary to study the preparation method of biomass yarn based on electrospinning process and its application. Summary of the invention

[0008] The purpose of this application is to provide a method for preparing a biocompatible biomass yarn and its application, so as to solve the problems that the composite film prepared in the prior art is relatively thick, which greatly reduces the comfort, and the eggshell membrane used is brittle, not conducive to reuse, and has poor biocompatibility, and there is no research on the preparation method of biocompatible biomass yarn prepared by electrospinning process and its application in the textile field.

[0009] To achieve the above purpose, the technical solution adopted in this application is:

[0010] In one aspect, the present application provides a method for preparing biocompatible biomass yarn, comprising:

[0011] S1, pretreating waste eggshell membranes to obtain eggshell membrane powder;

[0012] S2, dissolving the eggshell membrane powder obtained in step S1 in an aqueous solution and stirring until the eggshell membrane powder is fully dissolved to obtain an eggshell membrane aqueous solution;

[0013] S3, adding PEO polymer to the eggshell membrane aqueous solution obtained in step S2 and stirring them sufficiently to obtain a spinning solution;

[0014] S4, electrospinning the spinning solution obtained in step S3 in an electrospinning machine to obtain a nanofiber membrane using waste eggshell inner membrane as a raw material;

[0015] S5. Using a semi-automatic yarn twist meter, twisting the nanofiber membrane made of waste eggshell inner membrane obtained in step S4 to obtain biocompatible biomass yarn.

[0016] In a possible implementation, in step S1, pre-treating the waste eggshell membranes to obtain eggshell membrane powder comprises:

[0017] S11. Break fresh eggs and clean the white through blunt end;

[0018] S12, washing the eggshells thoroughly several times with ultrapure deionized water, and peeling off the eggshell membrane from the eggshells;

[0019] S13, washing the eggshell membrane with ethanol and deionized water to remove trace albumin;

[0020] S14, drying the eggshell membrane in a drying oven at 60° C. for 30 minutes and then grinding the eggshell membrane into powder to obtain eggshell membrane powder.

[0021] In a possible implementation, the molecular weight of the PEO polymer in step S3 is 400,000-900,000.

[0022] In a possible implementation, the mass ratio of PEO to eggshell membrane powder in the spinning solution obtained in step S3 is 1:3-3:1.

[0023] In a possible implementation, in step S4, the inner diameter of the steel needle used when the spinning solution is electrospun in the electrospinning machine is 0.5-0.7 mm.

[0024] In a possible implementation, in step S4, the voltage applied when the spinning solution is electrospun in the electrospinning machine is 18-24 kV.

[0025] In a possible implementation, in step S4, the spinning rate applied when the spinning solution is electrospun in the electrospinning machine is 0.1-0.5 mL / h.

[0026] In a possible implementation, in step S4, the rotation speed of the collecting roller applied when the spinning solution is electrospun in the electrospinning machine is 400-800 rpm.

[0027] In a possible implementation, in step S5, the nanofiber membrane made of waste eggshell inner membrane obtained in step S4 is twisted with a semi-automatic yarn twist meter to a twist degree of 15-25 twists / cm.

[0028] On the other hand, the present application provides a biomass yarn prepared according to the above-mentioned method for preparing a biocompatible biomass yarn.

[0029] On the other hand, the present application provides an application of biomass yarn prepared according to the above-mentioned method for preparing biomass yarn with biocompatibility in the field of home textiles.

[0030] The beneficial effects of the technical solution provided by this application include at least:

[0031] (1) The eggshell membrane used in this application is a waste in the environment, which is non-toxic, cheap and the most abundant biological waste. Using various proteins in eggshell membrane as natural biological materials embodies the concept of resource recycling and green environmental protection;

[0032] (2) The present application uses electrospinning technology to prepare a fiber membrane with a nanostructure in one step. By applying a high-voltage electrostatic field, the porous thin layer and highly collagenized fiber membrane structure of the eggshell membrane are reorganized in an orderly manner, so that the fibers in the fiber membrane have good orientation and have certain flexibility and strength, thereby increasing the overall stability of the fiber membrane;

[0033] (3) The biomass yarn prepared in this application is high in strength, has good tensile properties, contains many bioactive substances, has good biocompatibility and degradability, and plays an important role in moisturizing, anti-wrinkle, and improving metabolism of the skin. It can be processed through textile technology to prepare eye masks, pillowcases, pillowcases and other home textile products for use in the textile field, which can achieve good effects of skin-friendly comfort, sterilization and deodorization, and health care. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0035] Figure 1 A schematic diagram of a process for preparing a biocompatible biomass yarn provided by an exemplary embodiment of the present application is shown;

[0036] Figure 2 A schematic diagram of another method for preparing biomass yarn with biocompatibility provided by an exemplary embodiment of the present application is shown;

[0037] Figure 3 A schematic diagram showing the application of a biomass yarn prepared by a method for preparing a biocompatible biomass yarn provided by an exemplary embodiment of the present application in the field of home textiles;

[0038] Figure 4 A schematic diagram showing the mechanical properties test results of eggshell membrane, nanofiber membrane and biomass yarn;

[0039] Figure 5 A schematic diagram showing the moisture content test results of cotton fabric, wool fabric and biomass yarn fabric is shown. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0042] First, a brief introduction is given to the terms involved in the embodiments of the present application:

[0043] PEO, also known as polyethylene oxide, is a high molecular polymer with the appearance of small white granular powder. It has good water solubility, high viscosity, and good lubricity. Even a small amount of addition can show good fiber dispersion effect.

[0044] Embodiment 1

[0045] Figure 1 A schematic flow chart of a method for preparing a biocompatible biomass yarn provided by an exemplary embodiment of the present application is shown, the method comprising:

[0046] Step S1, pre-treating waste eggshell membranes to obtain eggshell membrane powder;

[0047] Step S2, dissolving the eggshell membrane powder obtained in step S1 in an aqueous solution and stirring until the eggshell membrane powder is fully dissolved to obtain an eggshell membrane aqueous solution;

[0048] Step S3, adding PEO polymer to the eggshell membrane aqueous solution obtained in step S2 and stirring them sufficiently to obtain a spinning solution;

[0049] Step S4, electrospinning the spinning solution obtained in step S3 in an electrospinning machine to obtain a nanofiber membrane using the waste eggshell inner membrane as a raw material;

[0050] Step S5: using a semi-automatic yarn twist meter to twist the nanofiber membrane made of waste eggshell inner membrane obtained in step S4 to obtain biocompatible biomass yarn.

[0051] It can be understood that the obtained biocompatible biomass yarn can be prepared into home textile fabrics such as eye masks, pillow covers, pillowcases, etc. using a weaving process, which can achieve good effects of skin-friendly comfort, sterilization and deodorization, and health care.

[0052] Optionally, the molecular weight of the PEO polymer in step S3 is 400,000-900,000.

[0053] Furthermore, the mass ratio of PEO to eggshell membrane powder in the spinning solution obtained in step S3 is 1:3-3:1.

[0054] Preferably, in step S4, the inner diameter of the steel needle used when the spinning solution is electrospun in the electrospinning machine is 0.5-0.7 mm.

[0055] Optionally, in step S4, the voltage applied when the spinning solution is electrospun in the electrospinning machine is 18-24 kV.

[0056] In one example, in step S4, the spinning rate applied when the spinning solution is electrospun in the electrospinning machine is 0.1-0.5 mL / h.

[0057] Furthermore, in step S4, the rotation speed of the collecting roller applied when the spinning solution is electrospun in the electrospinning machine is 400-800 rpm.

[0058] As a preferred embodiment, in step S4, when the spinning solution is electrospun in the electrospinning machine, the distance between the steel needle and the collecting roller is 10-15 cm.

[0059] Preferably, in step S5, the nanofiber membrane made of waste eggshell inner membrane obtained in step S4 is twisted with a semi-automatic yarn twist meter to a twist degree of 15-25 twists / cm.

[0060] In summary, the biomass yarn preparation method provided by the present application has high strength, good tensile properties, contains many bioactive substances, has good biocompatibility and degradability, and plays an important role in skin moisturizing, anti-wrinkle, and improving metabolism. It is processed by textile technology to prepare eye masks, pillowcases, pillowcases and other home textile products for use in the textile field, which can achieve good effects of skin-friendly comfort, sterilization and deodorization, and health care. The problem that the composite film prepared in the prior art is thick, which greatly reduces the comfort, and the eggshell membrane used is brittle, which is not conducive to repeated use, and has poor biocompatibility, and there is no research on the preparation method of biocompatible biomass yarn prepared by electrospinning technology and its application in the textile field.

[0061] Embodiment 2

[0062] Figure 2A schematic diagram of another method for preparing biocompatible biomass yarn provided by an exemplary embodiment of the present application is shown, the method comprising:

[0063] Step S11, breaking fresh eggs and clearing the white through blunt end;

[0064] Step S12, thoroughly washing the eggshell with ultrapure deionized water for several times, and peeling off the eggshell membrane from the eggshell;

[0065] Step S13, washing the eggshell membrane with ethanol and deionized water to remove trace albumin;

[0066] Step S14, drying the eggshell membrane in a drying oven at 60° C. for 30 minutes and then grinding the eggshell membrane into powder to obtain eggshell membrane powder;

[0067] Step S2, dissolving the eggshell membrane powder obtained in step S14 in an aqueous solution and stirring until the eggshell membrane powder is fully dissolved to obtain an eggshell membrane aqueous solution;

[0068] Step S3, adding PEO polymer to the eggshell membrane aqueous solution obtained in step S2 and stirring them sufficiently to obtain a spinning solution;

[0069] Step S4, electrospinning the spinning solution obtained in step S3 in an electrospinning machine to obtain a nanofiber membrane using the waste eggshell inner membrane as a raw material;

[0070] Step S5: using a semi-automatic yarn twist meter to twist the nanofiber membrane made of waste eggshell inner membrane obtained in step S4 to obtain biocompatible biomass yarn.

[0071] It can be understood that the obtained biocompatible biomass yarn can be prepared into home textile fabrics such as eye masks, pillow covers, pillowcases, etc. using a weaving process, which can achieve good effects of skin-friendly comfort, sterilization and deodorization, and health care.

[0072] Optionally, the molecular weight of the PEO polymer in step S3 is 400,000-900,000.

[0073] Furthermore, the mass ratio of PEO to eggshell membrane powder in the spinning solution obtained in step S3 is 1:3-3:1.

[0074] Preferably, in step S4, the inner diameter of the steel needle used when the spinning solution is electrospun in the electrospinning machine is 0.5-0.7 mm.

[0075] Optionally, in step S4, the voltage applied when the spinning solution is electrospun in the electrospinning machine is 18-24 kV.

[0076] In one example, in step S4, the spinning rate applied when the spinning solution is electrospun in the electrospinning machine is 0.1-0.5 mL / h.

[0077] Furthermore, in step S4, the rotation speed of the collecting roller applied when the spinning solution is electrospun in the electrospinning machine is 400-800 rpm.

[0078] As a preferred embodiment, in step S4, when the spinning solution is electrospun in the electrospinning machine, the distance between the steel needle and the collecting roller is 10-15 cm.

[0079] Preferably, in step S5, the nanofiber membrane made of waste eggshell inner membrane obtained in step S4 is twisted with a semi-automatic yarn twist meter to a twist degree of 15-25 twists / cm.

[0080] In summary, the biomass yarn preparation method with biocompatibility provided by the present application has high strength, good tensile properties, and contains many bioactive substances, has good biocompatibility and degradability, and plays an important role in moisturizing, anti-wrinkle and improving metabolism of the skin. The home textile products such as eye masks, pillowcases, and pillowcases are prepared by textile technology and applied to the textile field, which can achieve good effects of skin-friendly comfort, sterilization and deodorization, and health care. It solves the problem that the composite film prepared in the prior art is thicker, which greatly reduces the comfort, and the eggshell membrane used is brittle, which is not conducive to reuse, and has poor biocompatibility, and there is no research on the preparation method of biocompatible biomass yarn prepared by electrostatic spinning process and the problem of application in the textile field. In addition, the eggshell membrane used in the present application belongs to waste in the environment, which is non-toxic, cheap and the most abundant biological waste. The use of various proteins in eggshell membrane as natural biomaterials embodies the concept of resource recycling and green environmental protection; in addition, a fiber membrane with a nanostructure is prepared in one step through electrospinning technology. The porous thin layer and highly collagenized fiber membrane structure of the eggshell membrane are re-combined in an orderly manner using an applied high-voltage electrostatic field, so that the fibers in the fiber membrane have good orientation, and have a certain flexibility and strength, thereby increasing the overall stability of the fiber membrane.

[0081] Embodiment 3

[0082] Figure 3A schematic diagram of the application of a biomass yarn prepared by a biocompatible biomass yarn preparation method provided by an exemplary embodiment of the present application in the field of home textiles is shown. According to different application scenarios, the biomass yarn prepared by the above-mentioned biocompatible biomass yarn preparation method is woven into home textile products of different horizontal and vertical densities and thicknesses, such as eye masks, pillowcases, etc., through a weaving process, enriching the application of biomass materials in the field of textiles. Good effects of skin-friendly comfort, sterilization and deodorization, and health care can be achieved. The problem that the composite film prepared in the prior art is thick, which greatly reduces the comfort, and the eggshell membrane used is brittle, not conducive to repeated use, and has poor biocompatibility, and there is no research on the preparation method of biocompatible biomass yarn prepared by electrospinning process and its application in the field of textiles.

[0083] In order to better understand the present application, the present application is further described below in conjunction with the accompanying drawings and a specific embodiment. It should be noted that the embodiment described in the specific embodiment is only a part of the embodiments of the present application and does not limit the scope of protection of the present application.

[0084] Embodiment 4

[0085] This embodiment provides a method for preparing biomass yarn with biocompatibility, and the specific steps are as follows:

[0086] (1) Pretreatment of discarded eggshell membranes: Break fresh eggs and remove white albumin with a blunt end; then wash the eggshells thoroughly with ultrapure deionized water several times and carefully peel off the eggshell membranes from the eggshells. Wash the eggshell membranes with ethanol and deionized water to remove trace albumin; dry the eggshell membranes on a hot plate at 60°C for 30 minutes to make powder.

[0087] (2) Preparation of electrospinning solution: Dried eggshell membrane powder and PEO

[0088] (400000 g / mol) was directly added to an aqueous solution (30 ml) to prepare an eggshell membrane / poly(ethylene oxide) (PEO) blend, wherein the weight ratio of PEO to eggshell membrane was 1:1, resulting in a 13.3 wt % eggshell membrane / PEO solution.

[0089] (3) Preparation of electrospinning fiber membrane: The electrospinning equipment used in this study was produced by Dalian Tesman Technology Co., Ltd.; during the electrospinning process, the prepared electrospinning solution was filled into a 10 mL syringe equipped with a 19-gauge steel needle (needle inner diameter of 0.5 mm); after removing the bubbles in the syringe, the syringe was fixed on a syringe pump (Pfeder, model: 57BYG250B-8); the steel needle was connected to a TCM6002 high-voltage DC power supply through a tungsten electrode; a potential of 20 kV was applied to the tip of the injection needle; the distance between the needle and the collecting roller (grounded aluminum foil) was about 10 cm; the applied spinning flow rate was 0.06 mL / h; the rotating collecting roller rotated at a speed of 400 rpm; the spinning temperature was 22°C to 24°C, and the relative humidity was 45% to 50%; after electrospinning, the aluminum foil with the forming pad was immediately removed from the collecting roller and placed in a hood for 24 hours to remove residual organic solvents and moisture.

[0090] (4) Preparation of biomass yarn: The fiber membrane is twisted by a twisting process to prepare biomass yarn, with a twist of 15-25 twists / cm, and finally a biocompatible biomass yarn is obtained.

[0091] Accordingly, the obtained biocompatible biomass yarn can be prepared into home textile fabrics such as eye masks, pillow covers, pillowcases, etc. by weaving technology, which can achieve good effects of skin-friendly comfort, sterilization and deodorization, and health care.

[0092] Effect verification

[0093] The changes in skin color were measured using a Lab colorimetric system spectrophotometer.

[0094] The test index is: L = 116 (Y / Yn) 1 / 3-16; a = 500 [(X / Xn) 1 / 3-(Y / Yn) 1 / 3];

[0095] b=200[(Y / Yn)1 / 3-(Z / Zn)1 / 3]; Cab=(a2+b2)1 / 2; hab=arctg(b / a);

[0096] Wherein: L, a, b are the coordinate values ​​of the three-dimensional rectangular coordinate system; X, Y, Z are the three stimulus values ​​of the XTZ color system; Xn, Yn, Zn are the three stimulus values ​​of the completely diffuse reflection surface.

[0097] In the Lab colorimetry system, the color difference ΔEab between two stimuli is represented by the difference ΔL, Δa, Δb between the coordinates L, a, and b, that is, the distance between two color points in the color space.

[0098] ΔEab=[(ΔL)2+(Δa)2+(Δb)2]1 / 2.

[0099] Where: ΔEab is the comprehensive index of L, a, and b, representing the three-dimensional change of chromaticity and is a more appropriate indicator for evaluating skin color changes.

[0100] As shown in Table 1 below, the color difference of different parts of the human body after using the regenerated nanofiber membrane at different times is compared. After 10 days, 20 days, and 30 days of using the nanofiber membrane on the face, neck, and hands, ΔEab has increased significantly, indicating that the biomass nanofiber membrane can brighten the skin.

[0101] Table 1:

[0102]

[0103] Figure 3 The figure shows the mechanical properties test results of eggshell membrane, nanofiber membrane and biomass yarn. It can be seen from the figure:

[0104] The stress of the eggshell membrane was 1.08 MPa and the strain was 22.3%;

[0105] The stress of the nanofiber membrane was 2.47 MPa and the strain was 103.4%;

[0106] The stress of biomass yarn is 2.57MPa and the strain is 163.8%;

[0107] Compared with the original eggshell membrane, the nanofiber membrane and biomass yarn have excellent mechanical properties, which indicates that the prepared yarn has excellent stretchability and meets the conditions for weaving on a machine.

[0108] Figure 4 The figure shows the test results of moisture content of cotton fabric, wool fabric and biomass yarn fabric. It can be seen from the figure that:

[0109] The moisture content of cotton fabric is 8.7%, that of wool fabric is 15.2%, and that of biomass yarn fabric is 22.8%.

[0110] It can be seen that the fabric made of biomass yarn has excellent hygroscopicity and can play a good moisturizing role on the skin.

[0111] In summary, the biomass yarn preparation method with biocompatibility provided by the present application has high strength, good tensile properties, and contains many bioactive substances, has good biocompatibility and degradability, and plays an important role in moisturizing, anti-wrinkle and improving metabolism of the skin. The home textile products such as eye masks, pillowcases, and pillowcases are prepared by textile technology and applied to the textile field, which can achieve good effects of skin-friendly comfort, sterilization and deodorization, and health care. It solves the problem that the composite film prepared in the prior art is thicker, which greatly reduces the comfort, and the eggshell membrane used is brittle, which is not conducive to reuse, and has poor biocompatibility, and there is no research on the preparation method of biocompatible biomass yarn prepared by electrostatic spinning process and the problem of application in the textile field. In addition, the eggshell membrane used in the present application belongs to waste in the environment, which is non-toxic, cheap and the most abundant biological waste. The use of various proteins in eggshell membrane as natural biomaterials embodies the concept of resource recycling and green environmental protection; in addition, a fiber membrane with a nanostructure is prepared in one step through electrospinning technology. The porous thin layer and highly collagenized fiber membrane structure of the eggshell membrane are re-combined in an orderly manner using an applied high-voltage electrostatic field, so that the fibers in the fiber membrane have good orientation, and have a certain flexibility and strength, thereby increasing the overall stability of the fiber membrane.

[0112] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for preparing biocompatible biomass yarn, characterized in that: The following steps are involved: S1, pretreating waste eggshell membranes to obtain eggshell membrane powder; S2, dissolving the eggshell membrane powder obtained in step S1 in an aqueous solution and stirring until the eggshell membrane powder is fully dissolved to obtain an eggshell membrane aqueous solution; S3, adding PEO polymer to the eggshell membrane aqueous solution obtained in step S2 and stirring them sufficiently to obtain a spinning solution; S4, electrospinning the spinning solution obtained in step S3 in an electrospinning machine to obtain a nanofiber membrane using waste eggshell inner membrane as a raw material; S5, twisting the nanofiber membrane made of discarded eggshell inner membrane obtained in step S4 using a semi-automatic yarn twist meter to obtain a biomass yarn with biocompatibility; In the step S1, the waste eggshell membranes are pretreated to obtain eggshell membrane powder, comprising: S11. Break fresh eggs and clean the white through blunt end; S12, washing the eggshells thoroughly several times with ultrapure deionized water, and peeling off the eggshell membrane from the eggshells; S13, washing the eggshell membrane with ethanol and deionized water to remove trace albumin; S14, drying the eggshell membrane in a drying oven at 60° C. for 30 minutes and then grinding the eggshell membrane into powder to obtain eggshell membrane powder; The molecular weight of the PEO polymer in step S3 is 400,000-900,000; The mass ratio of PEO to eggshell membrane powder in the spinning solution obtained in step S3 is 1:3-3:1; In the step S4, the inner diameter of the steel needle used when the spinning solution is electrospun in the electrospinning machine is 0.5-0.7 mm; In the step S4, the voltage applied when the spinning solution is electrospun in the electrospinning machine is 18-24 kV; In the step S4, the spinning rate applied when the spinning solution is electrospun in the electrospinning machine is 0.1-0.5 mL / h; In the step S4, the rotation speed of the collecting roller applied when the spinning solution is electrospun in the electrospinning machine is 400-800 rpm; The moisture content of the biomass yarn fabric was 22.8%.

2. The method for preparing biocompatible biomass yarn according to claim 1, characterized in that: In the step S5, the nanofiber membrane made of waste eggshell inner membrane obtained in step S4 is twisted with a semi-automatic yarn twist meter to a twist degree of 15-25 twists / cm.

3. The biomass yarn obtained by the method for preparing biocompatible biomass yarn according to claim 1 or 2, characterized in that: The stress of the biomass yarn is 2.57 MPa.

4. The biomass yarn according to claim 3, characterized in that: The strain of the biomass yarn was 163.8%.

5. Application of the biocompatible biomass yarn according to any one of claims 3 to 4 in the field of home textiles.

6. The use according to claim 5, characterized in that: It is used to prepare functional fabrics with moisturizing, anti-wrinkle and metabolism-improving properties.

7. The use according to claim 6, characterized in that: The functional fabrics include but are not limited to eye masks, pillowcases, and pillow covers.

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