阅读说明：本技术 一种基于植物染料染色的抗菌面料及其制备方法 (Antibacterial fabric dyed based on vegetable dye and preparation method thereof ) 是由 刘玉珊 蒋婧 李英翯 于丹 赵培培 黄昭 李悦 李聪慧 赵悦 王琪园 于 2021-10-18 设计创作，主要内容包括：本发明公开了一种基于植物染料染色的抗菌面料,原料具有生物可降解性,绿色环保,无氟无毒；将玉米纤维与竹纤维混织后进行环氧改性,为纤维表面增加环氧基团；将纳米银-二氧化钛复合粒子进行羟基氨基改性；将环氧改性的混织纤维浸渍在壳聚糖、甘油、两亲性改性粒子的混合液中时,粒子亲水侧的氨基与混织纤维上的环氧基以共价结合,大幅提升面料的抗菌耐久性、自清洁性、抗菌性；壳聚糖和两亲性改性粒子也作为助染剂参与染色过程,大大提高了面料的染色耐劳性；且壳聚糖和甘油的添加,可以达到持久抗菌的效果；本发明用血胶与环氧交联剂EH作为固色剂,限定血胶与环氧交联剂EH的量,最大幅度提高染色抗菌面料的水洗牢度,延长染色时效。(The invention discloses an antibacterial fabric dyed based on a vegetable dye, which is biodegradable in raw materials, green, environment-friendly, free of fluorine and non-toxic; carrying out epoxy modification after the corn fiber and the bamboo fiber are mixed and woven, and adding an epoxy group on the surface of the fiber; carrying out hydroxyl amino modification on the nano silver-titanium dioxide composite particles; when the epoxy modified mixed-woven fiber is soaked in the mixed solution of chitosan, glycerol and the amphiphilic modified particles, the amino group on the hydrophilic side of the particles is covalently bonded with the epoxy group on the mixed-woven fiber, so that the antibacterial durability, self-cleaning property and antibacterial property of the fabric are greatly improved; the chitosan and the amphiphilic modified particles also serve as dyeing assistants to participate in the dyeing process, so that the dyeing fatigue resistance of the fabric is greatly improved; the addition of chitosan and glycerol can achieve the effect of lasting antibiosis; according to the invention, the blood glue and the epoxy cross-linking agent EH are used as color fixing agents, the amount of the blood glue and the epoxy cross-linking agent EH is limited, the washing fastness of the dyed antibacterial fabric is improved to the greatest extent, and the dyeing aging is prolonged.)

1. A preparation method of an antibacterial fabric based on vegetable dye dyeing is characterized by comprising the following steps: the preparation method of the fabric comprises the following steps:

s1: fiber treatment

Mixing and weaving corn fiber and bamboo fiber to form mixed and woven fiber; mixing gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, a sodium chloride solution and a sodium hydroxide solution, adjusting the pH value to 8-10, adding the mixed fabric fiber after water washing, reacting and stirring at 50-60 ℃ for 10-20min, taking out, washing with deionized water and ethanol, and drying to obtain the modified mixed fabric fiber;

s2: preparation of antibacterial fabric

Adding the amphiphilic modified particles into a mixed solution of glycerol and chitosan, ultrasonically stirring, and standing to form a suspension; under the action of ultrasonic waves, dipping the modified mixed-woven fibers in the turbid liquid, repeating dipping treatment and ultrasonic treatment for 2-5 times, sequentially and repeatedly washing the modified mixed-woven fibers with absolute ethyl alcohol and deionized water, drying the washed fibers at the temperature of 60-80 ℃ to obtain modified antibacterial fibers, and spinning the modified antibacterial fibers to form an antibacterial fabric;

s3: dyeing process

(1) Extracting stigma croci Sativi, radix Rubiae, fructus Gardeniae, and lignum sappan, and mixing to obtain plant mixed solution; soaking fructus Schisandrae chinensis in deionized water for 1-2 hr, heating to 90-100 deg.C, reacting for 10-20min, adjusting pH to 3-6, adding plant mixed solution, ultrasonic stirring at 50-70 deg.C, cooling to 18-25 deg.C, and making into natural plant dye solution;

(2) taking sap squeezed from fruit of tung tree, boiling to obtain clear oil, extracting lacquer from lacquer tree to obtain transparent lacquer, mixing the clear oil, the transparent lacquer and the plant natural dye solution, and ultrasonically stirring to obtain the plant natural dye; dipping and dyeing the antibacterial fabric in a plant natural dye, and carrying out ultrasonic treatment for 0.5-1h after dyeing;

(3) soaking the dyed fabric in formic acid for 10-20 min; and then, coating a color fixing agent for color fixing to obtain the antibacterial fabric dyed based on the vegetable dye.

2. The preparation method of the antibacterial fabric based on vegetable dye dyeing according to claim 1, characterized in that: the preparation of the amphipathy modified particles comprises the following steps:

(1) ultrasonically stirring nano silver powder, absolute ethyl alcohol and butyl titanate; dripping mixed solution of water, absolute ethyl alcohol and glacial acetic acid into the nano silver-titanium dioxide composite particles, continuously stirring for 2-3h, and sequentially centrifugally washing with ethyl alcohol and deionized water to obtain nano silver-titanium dioxide composite particles;

(2) ultrasonically dispersing nano silver-titanium dioxide composite particles and hexadecyl trimethyl ammonium chloride in deionized water, then adding molten paraffin, stirring for 0.5-1h, and cooling to 18-25 ℃; washing with deionized water, and drying under vacuum to obtain paraffin colloid particles;

(3) ultrasonically stirring paraffin colloid particles, gamma-aminopropyltriethoxysilane, methanol and deionized water at 30-40 ℃ for 6-8h, washing with water, drying, adding the dried modified paraffin colloid into cyclohexane to obtain hydroxyl amino modified particles, and centrifugally washing with cyclohexane, ethanol and deionized water in sequence;

(4) and (2) taking the hydroxyl amino modified particles and ethanol, carrying out ultrasonic stirring, adding octadecyltrichlorosilane, stirring for 10h at 60-68 ℃ in the dark, carrying out centrifugal washing by using ethanol and deionized water, and drying to obtain the amphiphilic modified particles.

3. The preparation method of the antibacterial fabric based on vegetable dye dyeing according to claim 2, characterized in that: the mass ratio of the nano silver-titanium dioxide composite particles to the hexadecyl trimethyl ammonium chloride is 1 (0.04-0.06).

4. The preparation method of the antibacterial fabric based on vegetable dye dyeing according to claim 2, characterized in that: the mol ratio of the gamma-aminopropyl triethoxysilane to the octadecyl trichlorosilane is 1 (1-3.3).

5. The preparation method of the antibacterial fabric based on vegetable dye dyeing according to claim 1, characterized in that: in the step S3(1), the contents of the components in the plant mixed solution are 0-20 parts by weight of saffron, 5-20 parts by weight of madder, 0-10 parts by weight of gardenia and 0-20 parts by weight of sappan wood; the natural plant dye solution comprises 10-20 parts of schisandra chinensis, 90-110 parts of deionized water and 50-60 parts of plant mixed solution.

6. The preparation method of the antibacterial fabric based on vegetable dye dyeing according to claim 1, characterized in that: the color fixing agent is an aqueous solution containing blood glue and an epoxy cross-linking agent EH, wherein the mass concentration of the blood glue in the color fixing agent is 1-3%, and the mass concentration of the epoxy cross-linking agent EH is 1-2%.

7. The preparation method of the antibacterial fabric based on vegetable dye dyeing according to claim 1, characterized in that: in the step S3(2), the contents of the components in the plant natural dye are 4-6 parts of bright oil, 5-8 parts of transparent paint and 70-80 parts of plant natural dye liquor by weight parts.

8. The utility model provides an antibiotic surface fabric based on vegetable dye dyeing which characterized in that: prepared by the process of any one of claims 1 to 7.

Technical Field

The invention relates to the field of textile fabrics, in particular to an antibacterial fabric dyed based on a vegetable dye and a preparation method thereof.

Background

In the dye market, the chemical synthetic dye is popular with people due to low cost and multiple selectivity, but waste water and waste gas are generated in the synthetic process to cause environmental pollution; moreover, intermediates for the synthesis of dyes may be toxic, resulting in their limited or even prohibited use; in recent years, people are more and more conscious of environmental protection, and the importance of green production is more and more recognized, so people look to vegetable dyes again; the plant dye is extracted from plants and used for dyeing; does not produce or contain any substances which may cause harm to human health and have adverse effects on the human environment.

The plant dye has wide development prospect under the wave impact of people advocating green consumer goods; the vegetable dye can avoid the problem of environmental pollution in the chemical synthesis of petroleum-based dye and the problem of toxicity of the synthetic intermediate, has wide application, and is suitable for dyeing the textile which is directly contacted with skin. However, the development of the plant dye in the prior art is restricted by low color-giving amount, easy decolorization and washfastness.

Along with the pursuit of people on healthy life style, the attention on the antibacterial performance of the fabric of the clothes is high; in the prior art, a chemical antibacterial agent is directly applied to textiles, but the antibacterial effect is obviously weakened along with the increase of washing times until the antibacterial performance is lost, and the antibacterial performance is not durable.

Disclosure of Invention

The invention aims to provide an antibacterial fabric dyed based on a vegetable dye and a preparation method thereof, and aims to solve the problems in the prior art.

In order to solve the technical problems, the invention provides the following technical scheme:

a preparation method of an antibacterial fabric based on vegetable dye dyeing comprises the following steps:

s1: fiber treatment

Mixing and weaving corn fiber and bamboo fiber to form mixed and woven fiber; mixing gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, a sodium chloride solution and a sodium hydroxide solution, adjusting the pH value to 8-10, adding the mixed fabric fiber after water washing, reacting and stirring at 50-60 ℃ for 10-20min, taking out, washing with deionized water and ethanol, and drying to obtain the modified mixed fabric fiber;

the antibacterial fabric prepared by blending and weaving the corn fiber and the bamboo fiber is environment-friendly, green, healthy and degradable; the corn fiber is polylactic acid fiber, has the advantages of good skin-friendly property, good hydrophobicity, ultraviolet resistance and sterilization, but has poor hygroscopicity, and the bamboo fiber has excellent air permeability and hygroscopicity, and is mixed with the corn fiber to improve the comfort and antibacterial property of the fabric;

performing epoxy modification on the mixed-woven fiber by using gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, a sodium chloride solution and a sodium hydroxide solution to increase epoxy groups for the mixed-woven fiber, increase the size of internal pores of the mixed-woven fiber and improve the mechanical property of the fabric;

s2: preparation of antibacterial fabric

Adding the amphiphilic modified particles into a mixed solution of glycerol and chitosan, ultrasonically stirring, and standing to form a suspension; under the action of ultrasonic waves, dipping the modified mixed-woven fibers in the turbid liquid, repeating dipping treatment and ultrasonic treatment for 2-5 times, sequentially and repeatedly washing the modified mixed-woven fibers with absolute ethyl alcohol and deionized water, drying the washed fibers at the temperature of 60-80 ℃ to obtain modified antibacterial fibers, and spinning the modified antibacterial fibers to form an antibacterial fabric;

s3: dyeing process

(1) Extracting stigma croci Sativi, radix Rubiae, fructus Gardeniae, and lignum sappan, and mixing to obtain plant mixed solution; soaking fructus Schisandrae chinensis in deionized water for 1-2 hr, heating to 90-100 deg.C, reacting for 10-20min, adjusting pH to 3-6, adding plant mixed solution, ultrasonic stirring at 50-70 deg.C, cooling to 18-25 deg.C, and making into natural plant dye solution;

(2) taking sap squeezed from fruit of tung tree, boiling to obtain clear oil, extracting lacquer from lacquer tree to obtain transparent lacquer, mixing the clear oil, the transparent lacquer and the plant natural dye solution, and ultrasonically stirring to obtain the plant natural dye; dipping and dyeing the antibacterial fabric in a plant natural dye, and carrying out ultrasonic treatment for 0.5-1h after dyeing;

(3) soaking the dyed fabric in formic acid for 10-20 min; and then, coating a color fixing agent for color fixing to obtain the antibacterial fabric dyed based on the vegetable dye.

Further, the preparation of the amphipathy modified particles comprises the following steps:

(1) ultrasonically stirring nano silver powder, absolute ethyl alcohol and butyl titanate; dripping mixed solution of water, absolute ethyl alcohol and glacial acetic acid into the nano silver-titanium dioxide composite particles, continuously stirring for 2-3h, and sequentially centrifugally washing with ethyl alcohol and deionized water to obtain nano silver-titanium dioxide composite particles;

(2) ultrasonically dispersing nano silver-titanium dioxide composite particles and hexadecyl trimethyl ammonium chloride in deionized water, then adding molten paraffin, stirring for 0.5-1h, and cooling to 18-25 ℃; washing with deionized water, and drying under vacuum to obtain paraffin colloid particles;

(3) ultrasonically stirring paraffin colloid particles, gamma-aminopropyltriethoxysilane, methanol and deionized water at 30-40 ℃ for 6-8h, washing with water, drying, adding the dried modified paraffin colloid into cyclohexane to obtain hydroxyl amino modified particles, and centrifugally washing with cyclohexane, ethanol and deionized water in sequence;

(4) and (2) taking the hydroxyl amino modified particles and ethanol, carrying out ultrasonic stirring, adding octadecyltrichlorosilane, stirring for 10h at 60-68 ℃ in the dark, carrying out centrifugal washing by using ethanol and deionized water, and drying to obtain the amphiphilic modified particles.

Furthermore, the amphiphilic modified particles have asymmetric structures, one side is hydrophilic amino, and the other side is hydrophobic long-chain alkane.

Furthermore, the mass ratio of the nano silver-titanium dioxide composite particles to the hexadecyl trimethyl ammonium chloride is 1 (0.04-0.06).

Furthermore, the mol ratio of the gamma-aminopropyl triethoxysilane to the octadecyl trichlorosilane is 1 (1-3.3).

Further, in the step S3(1), the contents of the components in the plant mixed solution are 0-20 parts by weight of saffron, 5-20 parts by weight of madder, 0-10 parts by weight of gardenia and 0-20 parts by weight of sappan wood; the natural plant dye solution comprises 10-20 parts of schisandra chinensis, 90-110 parts of deionized water and 50-60 parts of plant mixed solution.

Further, the color fixing agent is an aqueous solution containing blood glue and an epoxy cross-linking agent EH, wherein the mass concentration of the blood glue in the color fixing agent is 1-3%, and the mass concentration of the epoxy cross-linking agent EH is 1-2%.

Further, the color fixing method comprises the steps of soaking and rolling the color fixing liquid containing the cross-linking agent, the blood glue and the soda twice, wherein the rolling residual rate is 88%, pre-drying the color fixing liquid at 50-60 ℃ for 3min, and steaming the color fixing liquid at 110 ℃ for 10-18 min.

Further, in the step S3(2), the contents of the components in the plant natural dye are 4-6 parts by weight of bright oil, 5-8 parts by weight of clear paint and 70-80 parts by weight of plant natural dye liquor.

Preparing nano silver-titanium dioxide composite particles, then carrying out hydroxyl amino modification, limiting the molar ratio of gamma-aminopropyl triethoxysilane to octadecyl trichlorosilane to be 1 (1-3.3), enabling the amphiphilic modified particle structure to be that one side is hydrophilic amino and the other side is hydrophobic long-chain alkane, and when the molar ratio of gamma-aminopropyl triethoxysilane to octadecyl trichlorosilane is 1: 3.5, the washing fastness of the antibacterial fabric is reduced, and because the grafting amount of the octadecyl trichlorosilane on the silver-titanium dioxide composite particles is large, and the hydrophobic side of the particles is easy to assemble to form aggregates, the agglomeration phenomenon is aggravated in the dip-dyed fabric, the amino exposure of the particles is reduced, the chemical combination effect of the particles and epoxy groups on the mixed-woven fibers is weakened, and the particles are only accumulated on the surfaces of the fibers, so that a large amount of shedding can occur in the subsequent dyeing process, and the antibacterial property and the dyeing assisting property of the fabric are reduced;

synthetic dyes are commonly used in the existing dyeing process, and waste water and waste gas are generated in the synthetic process of some synthetic dyes, so that environmental pollution is caused; and the intermediate of the synthetic dye may have toxicity, so the natural plant dye is green, environment-friendly and pollution-free, but the natural plant dye has the problems of low dyeing degree, easy decolorization and the like;

according to the invention, saffron, madder, gardenia, sappan wood and schisandra chinensis are used for preparing a natural plant dye solution, the fruit of an elaeagnus mollis is used for obtaining the bright oil, the clear paint is prepared from the sumac, the bright oil, the clear paint and the plant natural dye solution are mixed to obtain the plant natural dye, the color giving degree of the plant natural dye is greatly improved, and the antibacterial fabric is treated by chitosan and the amphiphilic modified particles, so that the antibacterial property of the fabric can be increased, the dyeing effect of the plant natural dye is also improved in the dyeing process, and the chitosan and the amphiphilic modified particles are also used as dyeing assistants to participate in the dyeing process;

according to the invention, the blood glue and the epoxy cross-linking agent EH are used as color fixing agents, the amounts of the blood glue and the epoxy cross-linking agent EH are limited, the washability of the dyed antibacterial fabric is improved to the greatest extent, the dyeing aging is prolonged, and the epoxy cross-linking agent EH and the blood glue are subjected to etherification cross-linking reaction with phenolic hydroxyl groups and hydroxyl groups in the fabric, so that the dye is firmly combined with the mixed-woven fibers; the crosslinking reaction of the epoxy crosslinking agent and cellulose molecules occurs in an amorphous area, the crosslinking effect is greatly increased under the baking effect, the wrinkle recovery angle is increased, and the fabric has an excellent wrinkle-resistant effect.

The invention has the beneficial effects that:

the corn fiber, the bamboo fiber, the chitosan, the saffron, the madder, the gardenia, the sappan wood, the schisandra and the like used in the invention have biodegradability, are green and environment-friendly, and are fluorine-free and non-toxic;

the corn fiber and the bamboo fiber are mixed and woven and then subjected to epoxy modification, so that epoxy groups are added on the surface of the fiber, and the air permeability, comfort, antibacterial property, deodorization and ultraviolet resistance of the fabric are greatly improved;

carrying out hydroxyl amino modification on the nano silver-titanium dioxide composite particles, and limiting the molar ratio of gamma-aminopropyl triethoxysilane to octadecyl trichlorosilane to be 1 (1-3.3), so that the amphiphilic modified particle has a structure that one side is hydrophilic amino and the other side is hydrophobic long-chain alkane; when the epoxy modified mixed-woven fiber is soaked in the mixed solution of chitosan, glycerol and the amphiphilic modified particles, the amino group on the hydrophilic side of the particles is covalently bonded with the epoxy group on the mixed-woven fiber, so that the antibacterial durability of the fabric is greatly improved, and the hydrophobic side of the particles faces the environment, so that the self-cleaning property and the antibacterial property of the mixed-woven fiber can be improved; in the subsequent dyeing process, the chitosan and the amphiphilic modified particles also serve as dyeing assistants to participate in the dyeing process, so that the dyeing fatigue resistance of the fabric is greatly improved; the addition of chitosan and glycerol can achieve the effect of lasting antibiosis;

according to the invention, the blood glue and the epoxy cross-linking agent EH are used as color fixing agents, the amount of the blood glue and the epoxy cross-linking agent EH is limited, the washing fastness of the dyed antibacterial fabric is improved to the greatest extent, and the dyeing aging is prolonged.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications such as up, down, left, right, front, and back … … are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship, movement, and the like between the following components in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The technical solutions of the present invention are further described in detail with reference to the following specific examples, which should be understood as merely illustrative and not limitative.

Example 1

S1: fiber treatment

Mixing and weaving corn fiber and bamboo fiber to form mixed and woven fiber; mixing gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, a sodium chloride solution and a sodium hydroxide solution, adjusting the pH value to 8, adding the mixed woven fiber after water washing, reacting and stirring for 10min at 50 ℃, taking out, washing with deionized water and ethanol, and drying to obtain the modified mixed woven fiber;

s2: preparation of antibacterial fabric

Adding the amphiphilic modified particles into a mixed solution of glycerol and chitosan, ultrasonically stirring, and standing to form a suspension; under the action of ultrasonic waves, dipping the modified mixed-woven fibers in the turbid liquid, repeating dipping treatment and ultrasonic treatment for 2 times, sequentially and repeatedly washing the modified mixed-woven fibers with absolute ethyl alcohol and deionized water, drying the washed fibers at the temperature of 60 ℃ to obtain modified antibacterial fibers, and spinning the modified antibacterial fibers to form an antibacterial fabric;

the preparation of the amphipathy modified particles comprises the following steps:

(1) ultrasonically stirring nano silver powder, absolute ethyl alcohol and butyl titanate; dripping mixed solution of water, absolute ethyl alcohol and glacial acetic acid into the nano silver-titanium dioxide composite particles, continuously stirring for 2 hours, and sequentially centrifugally washing with ethyl alcohol and deionized water to obtain nano silver-titanium dioxide composite particles;

(2) ultrasonically dispersing nano silver-titanium dioxide composite particles and hexadecyl trimethyl ammonium chloride in deionized water, then adding molten paraffin, stirring for 0.5h, and cooling to 18 ℃; washing with deionized water, and drying under vacuum to obtain paraffin colloid particles;

the mass ratio of the nano silver-titanium dioxide composite particles to the hexadecyl trimethyl ammonium chloride is 1: 0.04;

(3) ultrasonically stirring paraffin colloid particles, gamma-aminopropyltriethoxysilane, methanol and deionized water at 30 ℃ for 8 hours, washing and drying, adding the dried modified paraffin colloid into cyclohexane to obtain hydroxyl amino modified particles, and centrifugally washing with cyclohexane, ethanol and deionized water in sequence;

(4) ultrasonically stirring hydroxyl amino modified particles and ethanol, adding octadecyltrichlorosilane, stirring at 60 ℃ in the dark for 10 hours, centrifugally washing with ethanol and deionized water, and drying to obtain amphiphilic modified particles; the mol ratio of the gamma-aminopropyltriethoxysilane to the octadecyl trichlorosilane is 1: 1;

s3: dyeing process

(1) Extracting stigma croci Sativi, radix Rubiae, fructus Gardeniae, and lignum sappan, and mixing to obtain plant mixed solution; soaking fructus Schisandrae chinensis in deionized water for 1h, heating to 90 deg.C, reacting for 20min, adjusting pH to 3, adding the mixed solution of plants, ultrasonic stirring at 50 deg.C, cooling to 18 deg.C, and making into natural plant dye solution;

the contents of each component in the plant mixed solution are 2 parts of saffron crocus, 5 parts of madder, 0 part of gardenia and 5 parts of sappan wood in parts by weight; the natural plant dye solution comprises 10 parts of schisandra chinensis, 90 parts of deionized water and 50 parts of plant mixed solution;

(2) taking sap squeezed from fruit of tung tree, boiling to obtain clear oil, extracting lacquer from lacquer tree to obtain transparent lacquer, mixing the clear oil, the transparent lacquer and the plant natural dye solution, and ultrasonically stirring to obtain the plant natural dye; dipping and dyeing the antibacterial fabric in a plant natural dye, and carrying out ultrasonic treatment for 0.5h after dyeing;

the plant natural dye comprises, by weight, 4 parts of bright oil, 5 parts of clear paint and 70 parts of plant natural dye liquor;

(3) soaking the dyed fabric in formic acid for 10 min; then, coating a color fixing agent for color fixing to obtain an antibacterial fabric dyed based on a vegetable dye; the color fixing agent is an aqueous solution containing blood glue and an epoxy cross-linking agent EH, wherein the mass concentration of the blood glue in the color fixing agent is 1%, and the mass concentration of the epoxy cross-linking agent EH is 1%.

Example 2

S1: fiber treatment

Mixing and weaving corn fiber and bamboo fiber to form mixed and woven fiber; mixing gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, a sodium chloride solution and a sodium hydroxide solution, adjusting the pH value to 9, adding the washed mixed-woven fiber, reacting and stirring at 55 ℃ for 15min, taking out, washing with deionized water and ethanol, and drying to obtain the modified mixed-woven fiber;

s2: preparation of antibacterial fabric

Adding the amphiphilic modified particles into a mixed solution of glycerol and chitosan, ultrasonically stirring, and standing to form a suspension; under the action of ultrasonic waves, dipping the modified mixed-woven fibers in the suspension, repeating dipping treatment and ultrasonic treatment for 4 times, sequentially and repeatedly washing the suspension by absolute ethyl alcohol and deionized water, drying the suspension at 70 ℃ to obtain modified antibacterial fibers, and spinning the modified antibacterial fibers to form an antibacterial fabric;

the preparation of the amphipathy modified particles comprises the following steps:

(1) ultrasonically stirring nano silver powder, absolute ethyl alcohol and butyl titanate; dripping mixed solution of water, absolute ethyl alcohol and glacial acetic acid into the nano silver-titanium dioxide composite particles, continuously stirring for 2.5h, and sequentially centrifugally washing with ethyl alcohol and deionized water to obtain nano silver-titanium dioxide composite particles;

(2) ultrasonically dispersing nano silver-titanium dioxide composite particles and hexadecyl trimethyl ammonium chloride in deionized water, then adding molten paraffin, stirring for 0.8h, and cooling to 22 ℃; washing with deionized water, and drying under vacuum to obtain paraffin colloid particles;

the mass ratio of the nano silver-titanium dioxide composite particles to the hexadecyl trimethyl ammonium chloride is 1: 0.05;

(3) ultrasonically stirring paraffin colloid particles, gamma-aminopropyltriethoxysilane, methanol and deionized water at 30-40 ℃ for 7 hours, washing with water, drying, adding the dried modified paraffin colloid into cyclohexane to obtain hydroxyl amino modified particles, and centrifugally washing with cyclohexane, ethanol and deionized water in sequence;

(4) ultrasonically stirring hydroxyl amino modified particles and ethanol, adding octadecyltrichlorosilane, stirring at 65 ℃ in the dark for 10 hours, centrifugally washing with ethanol and deionized water, and drying to obtain amphiphilic modified particles; the mol ratio of the gamma-aminopropyltriethoxysilane to the octadecyl trichlorosilane is 1: 3;

s3: dyeing process

(1) Extracting stigma croci Sativi, radix Rubiae, fructus Gardeniae, and lignum sappan, and mixing to obtain plant mixed solution; soaking fructus Schisandrae chinensis in deionized water for 1.5h, heating to 95 deg.C, reacting for 15min, adjusting pH to 4, adding plant mixed solution, ultrasonic stirring at 60 deg.C, cooling to 22 deg.C, and making into natural plant dye solution;

the contents of each component in the plant mixed solution are 10 parts of saffron crocus, 15 parts of madder, 8 parts of gardenia and 12 parts of sappan wood in parts by weight; the natural plant dye solution comprises 8 parts of schisandra chinensis, 100 parts of deionized water and 55 parts of plant mixed solution;

(2) taking sap squeezed from fruit of tung tree, boiling to obtain clear oil, extracting lacquer from lacquer tree to obtain transparent lacquer, mixing the clear oil, the transparent lacquer and the plant natural dye solution, and ultrasonically stirring to obtain the plant natural dye; dipping and dyeing the antibacterial fabric in a plant natural dye, and carrying out ultrasonic treatment for 0.8h after dyeing;

the plant natural dye comprises, by weight, 5 parts of bright oil, 7 parts of clear paint and 75 parts of plant natural dye liquor;

(3) soaking the dyed fabric in formic acid for 15 min; then, coating a color fixing agent for color fixing to obtain an antibacterial fabric dyed based on a vegetable dye; the color fixing agent is an aqueous solution containing 2% of blood glue and 1.8% of epoxy cross-linking agent EH.

Example 3

S1: fiber treatment

Mixing and weaving corn fiber and bamboo fiber to form mixed and woven fiber; mixing gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, a sodium chloride solution and a sodium hydroxide solution, adjusting the pH value to 10, adding the mixed woven fiber after water washing, reacting and stirring for 20min at the temperature of 60 ℃, taking out, washing with deionized water and ethanol, and drying to obtain the modified mixed woven fiber;

s2: preparation of antibacterial fabric

Adding the amphiphilic modified particles into a mixed solution of glycerol and chitosan, ultrasonically stirring, and standing to form a suspension; under the action of ultrasonic waves, dipping the modified mixed-woven fibers in the turbid liquid, repeating dipping treatment and ultrasonic treatment for 5 times, sequentially and repeatedly washing the modified mixed-woven fibers with absolute ethyl alcohol and deionized water, drying the washed fibers at 80 ℃ to obtain modified antibacterial fibers, and spinning the modified antibacterial fibers to form an antibacterial fabric;

the preparation of the amphipathy modified particles comprises the following steps:

(1) ultrasonically stirring nano silver powder, absolute ethyl alcohol and butyl titanate; dripping mixed solution of water, absolute ethyl alcohol and glacial acetic acid into the nano silver-titanium dioxide composite particles, continuously stirring for 3 hours, and sequentially centrifugally washing by using ethyl alcohol and deionized water to obtain the nano silver-titanium dioxide composite particles;

(2) ultrasonically dispersing nano silver-titanium dioxide composite particles and hexadecyl trimethyl ammonium chloride in deionized water, then adding molten paraffin, stirring for 1h, and cooling to 25 ℃; washing with deionized water, and drying under vacuum to obtain paraffin colloid particles;

the mass ratio of the nano silver-titanium dioxide composite particles to the hexadecyl trimethyl ammonium chloride is 1: 0.06;

(3) ultrasonically stirring paraffin colloid particles, gamma-aminopropyltriethoxysilane, methanol and deionized water at 40 ℃ for 6 hours, washing and drying, adding the dried modified paraffin colloid into cyclohexane to obtain hydroxyl amino modified particles, and centrifugally washing by using cyclohexane, ethanol and deionized water in sequence;

(4) ultrasonically stirring hydroxyl amino modified particles and ethanol, adding octadecyltrichlorosilane, stirring at 68 ℃ in the dark for 10 hours, centrifugally washing with ethanol and deionized water, and drying to obtain amphiphilic modified particles; the mol ratio of the gamma-aminopropyltriethoxysilane to the octadecyl trichlorosilane is 1: 3.3;

s3: dyeing process

(1) Extracting stigma croci Sativi, radix Rubiae, fructus Gardeniae, and lignum sappan, and mixing to obtain plant mixed solution; soaking fructus Schisandrae chinensis in deionized water for 2 hr, heating to 100 deg.C, reacting for 10min, adjusting pH to 6, adding the plant mixed solution, ultrasonic stirring at 70 deg.C, cooling to 25 deg.C, and making into natural plant dye solution;

the contents of each component in the plant mixed solution are 20 parts of saffron, 20 parts of madder, 10 parts of gardenia and 20 parts of sappan wood in parts by weight; the natural plant dye solution comprises 20 parts of schisandra chinensis, 110 parts of deionized water and 60 parts of plant mixed solution;

(2) taking sap squeezed from fruit of tung tree, boiling to obtain clear oil, extracting lacquer from lacquer tree to obtain transparent lacquer, mixing the clear oil, the transparent lacquer and the plant natural dye solution, and ultrasonically stirring to obtain the plant natural dye; dipping and dyeing the antibacterial fabric in a plant natural dye, and carrying out ultrasonic treatment for 1h after dyeing;

the plant natural dye comprises, by weight, 6 parts of bright oil, 8 parts of clear paint and 80 parts of plant natural dye liquor;

(3) soaking the dyed fabric in formic acid for 20 min; then, coating a color fixing agent for color fixing to obtain an antibacterial fabric dyed based on a vegetable dye; the color fixing agent is an aqueous solution containing blood glue and an epoxy cross-linking agent EH, wherein the mass concentration of the blood glue in the color fixing agent is 3%, and the mass concentration of the epoxy cross-linking agent EH is 2%.

Comparative example 1

S1: fiber treatment

Mixing and weaving corn fiber and bamboo fiber to form mixed and woven fiber; mixing gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, a sodium chloride solution and a sodium hydroxide solution, adjusting the pH value to 9, adding the washed mixed-woven fiber, reacting and stirring at 55 ℃ for 15min, taking out, washing with deionized water and ethanol, and drying to obtain the modified mixed-woven fiber;

s2: preparation of antibacterial fabric

Adding nano titanium dioxide powder into glycerol, ultrasonically stirring, and standing to form a suspension; under the action of ultrasonic waves, dipping the modified mixed-woven fibers in the suspension, repeating dipping treatment and ultrasonic treatment for 4 times, sequentially and repeatedly washing the suspension by absolute ethyl alcohol and deionized water, drying the suspension at 70 ℃ to obtain modified antibacterial fibers, and spinning the modified antibacterial fibers to form an antibacterial fabric;

s3: dyeing process

(1) Extracting stigma croci Sativi, radix Rubiae, fructus Gardeniae, and lignum sappan, and mixing to obtain plant mixed solution; soaking fructus Schisandrae chinensis in deionized water for 1.5h, heating to 95 deg.C, reacting for 15min, adjusting pH to 4, adding plant mixed solution, ultrasonic stirring at 60 deg.C, cooling to 22 deg.C, and making into natural plant dye solution;

the contents of each component in the plant mixed solution are 10 parts of saffron crocus, 15 parts of madder, 8 parts of gardenia and 12 parts of sappan wood in parts by weight; the natural plant dye solution comprises 8 parts of schisandra chinensis, 100 parts of deionized water and 55 parts of plant mixed solution;

(2) taking sap squeezed from fruit of tung tree, boiling to obtain clear oil, extracting lacquer from lacquer tree to obtain transparent lacquer, mixing the clear oil, the transparent lacquer and the plant natural dye solution, and ultrasonically stirring to obtain the plant natural dye; dipping and dyeing the antibacterial fabric in a plant natural dye, and carrying out ultrasonic treatment for 0.8h after dyeing;

the plant natural dye comprises, by weight, 5 parts of bright oil, 7 parts of clear paint and 75 parts of plant natural dye liquor;

(3) soaking the dyed fabric in formic acid for 15 min; then, coating a color fixing agent for color fixing to obtain an antibacterial fabric dyed based on a vegetable dye; the color fixing agent is an aqueous solution containing 2% of blood glue and 1.8% of epoxy cross-linking agent EH.

Comparative example 2

S1: fiber treatment

Mixing and weaving corn fiber and bamboo fiber to form mixed and woven fiber;

s2: preparation of antibacterial fabric

Adding the amphiphilic modified particles into a mixed solution of glycerol and chitosan, ultrasonically stirring, and standing to form a suspension; under the action of ultrasonic waves, soaking the mixed-woven fibers in the suspension, repeatedly soaking and ultrasonically treating for 4 times, repeatedly washing the mixed-woven fibers with absolute ethyl alcohol and deionized water in sequence, drying the washed mixed-woven fibers at 70 ℃ to obtain modified antibacterial fibers, and spinning the modified antibacterial fibers to form antibacterial fabric;

the preparation of the amphipathy modified particles comprises the following steps:

(1) ultrasonically stirring nano silver powder, absolute ethyl alcohol and butyl titanate; dripping mixed solution of water, absolute ethyl alcohol and glacial acetic acid into the nano silver-titanium dioxide composite particles, continuously stirring for 2.5h, and sequentially centrifugally washing with ethyl alcohol and deionized water to obtain nano silver-titanium dioxide composite particles;

(2) ultrasonically dispersing nano silver-titanium dioxide composite particles and hexadecyl trimethyl ammonium chloride in deionized water, then adding molten paraffin, stirring for 0.8h, and cooling to 22 ℃; washing with deionized water, and drying under vacuum to obtain paraffin colloid particles;

the mass ratio of the nano silver-titanium dioxide composite particles to the hexadecyl trimethyl ammonium chloride is 1: 0.05;

(3) ultrasonically stirring paraffin colloid particles, gamma-aminopropyltriethoxysilane, methanol and deionized water at 30-40 ℃ for 7 hours, washing with water, drying, adding the dried modified paraffin colloid into cyclohexane to obtain hydroxyl amino modified particles, and centrifugally washing with cyclohexane, ethanol and deionized water in sequence;

(4) ultrasonically stirring hydroxyl amino modified particles and ethanol, adding octadecyltrichlorosilane, stirring at 65 ℃ in the dark for 10 hours, centrifugally washing with ethanol and deionized water, and drying to obtain amphiphilic modified particles; the mol ratio of the gamma-aminopropyltriethoxysilane to the octadecyl trichlorosilane is 1: 3;

s3: dyeing process

(1) Extracting stigma croci Sativi, radix Rubiae, fructus Gardeniae, and lignum sappan, and mixing to obtain plant mixed solution; soaking fructus Schisandrae chinensis in deionized water for 1.5h, heating to 95 deg.C, reacting for 15min, adjusting pH to 4, adding plant mixed solution, ultrasonic stirring at 60 deg.C, cooling to 22 deg.C, and making into natural plant dye solution;

the contents of each component in the plant mixed solution are 10 parts of saffron crocus, 15 parts of madder, 8 parts of gardenia and 12 parts of sappan wood in parts by weight; the natural plant dye solution comprises 8 parts of schisandra chinensis, 100 parts of deionized water and 55 parts of plant mixed solution;

(2) taking sap squeezed from fruit of tung tree, boiling to obtain clear oil, extracting lacquer from lacquer tree to obtain transparent lacquer, mixing the clear oil, the transparent lacquer and the plant natural dye solution, and ultrasonically stirring to obtain the plant natural dye; dipping and dyeing the antibacterial fabric in a plant natural dye, and carrying out ultrasonic treatment for 0.8h after dyeing;

the plant natural dye comprises, by weight, 5 parts of bright oil, 7 parts of clear paint and 75 parts of plant natural dye liquor;

(3) soaking the dyed fabric in formic acid for 15 min; then, coating a color fixing agent for color fixing to obtain an antibacterial fabric dyed based on a vegetable dye; the color fixing agent is an aqueous solution containing 2% of blood glue and 1.8% of epoxy cross-linking agent EH.

Comparative example 3

S1: fiber treatment

Mixing and weaving corn fiber and bamboo fiber to form mixed and woven fiber; mixing gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane, a sodium chloride solution and a sodium hydroxide solution, adjusting the pH value to 9, adding the washed mixed-woven fiber, reacting and stirring at 55 ℃ for 15min, taking out, washing with deionized water and ethanol, and drying to obtain the modified mixed-woven fiber;

s2: preparation of antibacterial fabric

Adding the amphiphilic modified particles into a mixed solution of glycerol and chitosan, ultrasonically stirring, and standing to form a suspension; under the action of ultrasonic waves, dipping the modified mixed-woven fibers in the suspension, repeating dipping treatment and ultrasonic treatment for 4 times, sequentially and repeatedly washing the suspension by absolute ethyl alcohol and deionized water, drying the suspension at 70 ℃ to obtain modified antibacterial fibers, and spinning the modified antibacterial fibers to form an antibacterial fabric;

the preparation of the amphipathy modified particles comprises the following steps:

(1) ultrasonically stirring nano silver powder, absolute ethyl alcohol and butyl titanate; dripping mixed solution of water, absolute ethyl alcohol and glacial acetic acid into the nano silver-titanium dioxide composite particles, continuously stirring for 2.5h, and sequentially centrifugally washing with ethyl alcohol and deionized water to obtain nano silver-titanium dioxide composite particles;

(2) ultrasonically dispersing nano silver-titanium dioxide composite particles and hexadecyl trimethyl ammonium chloride in deionized water, then adding molten paraffin, stirring for 0.8h, and cooling to 22 ℃; washing with deionized water, and drying under vacuum to obtain paraffin colloid particles;

the mass ratio of the nano silver-titanium dioxide composite particles to the hexadecyl trimethyl ammonium chloride is 1: 0.05;

(3) ultrasonically stirring paraffin colloid particles, gamma-aminopropyltriethoxysilane, methanol and deionized water at 30-40 ℃ for 7 hours, washing with water, drying, adding the dried modified paraffin colloid into cyclohexane to obtain hydroxyl amino modified particles, and centrifugally washing with cyclohexane, ethanol and deionized water in sequence;

(4) ultrasonically stirring hydroxyl amino modified particles and ethanol, adding octadecyltrichlorosilane, stirring at 65 ℃ in the dark for 10 hours, centrifugally washing with ethanol and deionized water, and drying to obtain amphiphilic modified particles; the mol ratio of the gamma-aminopropyltriethoxysilane to the octadecyl trichlorosilane is 1: 3;

s3: dyeing process

(1) Extracting stigma croci Sativi, radix Rubiae, fructus Gardeniae, and lignum sappan, and mixing to obtain plant mixed solution; soaking fructus Schisandrae chinensis in deionized water for 1.5h, heating to 95 deg.C, reacting for 15min, adjusting pH to 4, adding plant mixed solution, ultrasonic stirring at 60 deg.C, cooling to 22 deg.C, and making into natural plant dye solution;

the contents of each component in the plant mixed solution are 10 parts of saffron crocus, 15 parts of madder, 8 parts of gardenia and 12 parts of sappan wood in parts by weight; the natural plant dye solution comprises 8 parts of schisandra chinensis, 100 parts of deionized water and 55 parts of plant mixed solution;

(2) taking sap squeezed from fruit of tung tree, boiling to obtain clear oil, extracting lacquer from lacquer tree to obtain transparent lacquer, mixing the clear oil, the transparent lacquer and the plant natural dye solution, and ultrasonically stirring to obtain the plant natural dye; dipping and dyeing the antibacterial fabric in a plant natural dye, and carrying out ultrasonic treatment for 0.8h after dyeing;

the plant natural dye comprises, by weight, 5 parts of bright oil, 7 parts of clear paint and 75 parts of plant natural dye liquor;

(3) and (3) soaking the dyed fabric in formic acid for 15min to obtain the antibacterial fabric dyed based on the vegetable dye.

And (3) performance testing: the fabric prepared in the examples 1-3 and 1-3 is subjected to antibacterial property detection according to a detection method of the standard GB/T20944.3-2008, and test strains are gram-negative bacteria escherichia coli and gram-positive bacteria staphylococcus aureus;

the measured bacteriostatic rates of the antibacterial fabrics of examples 1-3 and comparative examples 1-3 on escherichia coli and staphylococcus aureus are shown in table 1 respectively;

examples 1-3 antibacterial composite fabric has a bacteriostasis rate of 99.7% or more to escherichia coli and staphylococcus aureus, which shows that the antibacterial fabric prepared by the invention has excellent antibacterial property.

TABLE 1

The antibacterial durability of the fabric is tested according to reference standard GB/T20944.3-2008, the antibacterial rates of the antibacterial fabrics of examples 1-3 and comparative examples 1-3 on escherichia coli and staphylococcus aureus are respectively shown in table 2 by performing standard washing on a sample to be tested for 50 times, and the antibacterial durability of the fabric is observed;

TABLE 2

The antibacterial fabric of the embodiment 1-3 has the antibacterial rate of over 98 percent on escherichia coli and staphylococcus aureus, and has high antibacterial durability.

The dyeing effects of the above examples 1-3 and comparative examples 1-3 are identified, the dyed fabrics are subjected to dry friction and wet friction by referring to QB/T2790-:

	example 1	Example 2	Example 3	Comparative example 1	Comparative example 2	Comparative example 3
							Dry wiping	5	5	5	3	4	4
Wet eraser	4	5	5	3	3	3
							Levelling property	5	5	5	3	4	4
Fastness to washing	4	5	5	3	4	3
							Dye uptake	97.1％	98.4％	98.8％	88.1％	93.3％	90.2％

TABLE 3

As can be seen from the comparison of the data in Table 3, the antibacterial fabric dyed by the invention has high dye-uptake, good level-dyeing property and strong washing fastness.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the present specification and directly/indirectly applied to other related technical fields, are included in the scope of the present invention.