CN115216964A - Washable antibacterial fabric and preparation method thereof - Google Patents
Washable antibacterial fabric and preparation method thereof Download PDFInfo
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- CN115216964A CN115216964A CN202211044632.9A CN202211044632A CN115216964A CN 115216964 A CN115216964 A CN 115216964A CN 202211044632 A CN202211044632 A CN 202211044632A CN 115216964 A CN115216964 A CN 115216964A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
- D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/13—Ammonium halides or halides of elements of Groups 1 or 11 of the Periodic System
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/58—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
- D06M11/64—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with nitrogen oxides; with oxyacids of nitrogen or their salts
- D06M11/65—Salts of oxyacids of nitrogen
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/12—Aldehydes; Ketones
- D06M13/123—Polyaldehydes; Polyketones
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/144—Alcohols; Metal alcoholates
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
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Abstract
The application relates to the technical field of antibacterial fabrics, and particularly discloses a preparation method of a washable antibacterial fabric, which comprises the following steps: carrying out spray process finishing on the pretreated fabric, namely putting the fabric into the initial position of a rolling roller of spray equipment, adjusting the nozzle and the flow rate to be 8-10mL/min, and the speed of the rolling roller to be 17-20mL/min, starting an air pump to control the fabric to uniformly roll through the nozzle, so that 0.01-0.1g/L of first bactericidal solution and 0.5-2g/L of second bactericidal solution can be sprayed on the surface of the fabric in sequence; and (5) shaping to obtain the antibacterial fabric. The application provides a preparation method of washable antibacterial fabric, and the first sterilizing liquid and the second sterilizing liquid are selected to be loaded on the fabric through a spraying process, so that the composite effect of the fabric and a sterilizing material is increased, the sterilizing performance is improved under the synergistic promotion effect of multiple sterilizing materials, and the antibacterial capacity of the fabric is optimized.
Description
Technical Field
The application relates to the technical field of antibacterial fabrics, in particular to a washable antibacterial fabric and a preparation method thereof.
Background
Along with the aggravation of environmental pollution, climate change is constant in recent years, natural disasters occur frequently, good living conditions are provided for a plurality of microbes such as bacteria, fungi and viruses, the survival rate of some harmful microbes is high, the pathogenic rate is high, the transmissibility is strong, and the threat to human bodies and the environment is great. In addition to the elimination of these harmful microorganisms from the source, cutting off their transmission pathways is also an important method of reducing damage, and thus the antimicrobial properties of textiles have been of great interest in recent years.
However, the stability of most of the prior textiles treated by the antibacterial technology cannot be well guaranteed, and the antibacterial performance of the textiles after being washed for many times cannot be continuously maintained. Based on the above, the application provides a washable antibacterial fabric and a preparation method thereof.
Disclosure of Invention
In order to improve the water washing resistance of the antibacterial fabric, the application provides the water washing resistance antibacterial fabric and a preparation method thereof.
The application provides a washing-resistant antibacterial fabric, adopts following technical scheme:
a preparation method of a washable antibacterial fabric comprises the following steps:
carrying out spray process finishing on the pretreated fabric, namely putting the fabric into the initial position of a rolling roller of spray equipment, adjusting the nozzle and the flow rate to be 8-10mL/min, and the speed of the rolling roller to be 17-20mL/min, starting an air pump to control the fabric to uniformly roll through the nozzle, so that 0.01-0.1g/L of first bactericidal solution and 0.5-2g/L of second bactericidal solution can be sprayed on the surface of the fabric in sequence; obtaining the antibacterial fabric after setting;
wherein the first antiseptic solution comprises chitosan monoguanidine hydrochloride loaded nanogold/silver complex; the second germicidal solution includes one or more of copper nitrate, copper chloride, and o-hydroxycyclopentendione.
Preferably, the pretreatment step comprises: the cotton fabric is cleaned to remove surface oil stains and impurities, and the adhesion capability of the antibacterial agent on the surface of the fiber fabric is prevented from being influenced.
Preferably, the shaping comprises the steps of carrying out shaping finishing on the woven grey cloth, directly enabling the fabric sprayed with the sterilizing solution to enter shaping equipment through a rolling roller, wherein the shaping temperature is 90-110 ℃, and the shaping time is 60-70min, and finally obtaining the antibacterial fabric.
Preferably, the chitosan monoguanidine hydrochloride is prepared by taking chitosan and thiourea dioxide as raw materials.
Preferably, the preparation method of the chitosan monoguanidine hydrochloride-loaded nano gold/silver compound comprises the following steps: dissolving chitosan monoguanidine hydrochloride in water, adding nanogold and nanosilver, performing ultrasonic treatment, and adding Tween80 to obtain a pre-emulsified water phase mixture;
wherein, the molar ratio of the chitosan monoguanidine hydrochloride to the nano gold and the nano silver is 1.2-0.5, and the volume percentage concentration of the Tween80 in the water phase is 5-6%;
adding an emulsifier into petroleum ether and liquid paraffin according to the volume ratio of (1-5): 1 preparing an oil phase solvent to obtain an oil phase mixture with the volume percentage concentration of the emulsifier of 2-8%;
adding the obtained water phase mixture into the oil phase mixture in a spraying mode, wherein the volume ratio of the water phase mixture to the oil phase mixture is 1: (10-12), stirring for 40-60min, adding a cross-linking agent, namely succinaldehyde, wherein the addition amount of the cross-linking agent is that the molar ratio of aldehyde groups to amino groups in the chitosan monoguanidine hydrochloride is 5-6:1, reacting for 5-6h to obtain the composite antibacterial powder.
The application also provides a washable antibacterial fabric prepared by the method.
In summary, the present application has the following beneficial effects:
(1) In the prior art, a microsphere technology is adopted to compound chitosan guanidyl hydrochloride and nano silver together, and the nano silver is coated in the microsphere, so that the application finds that nano gold is used as a composite connecting material and can be used as a load to better connect the nano silver and the chitosan guanidyl hydrochloride, and meanwhile, the nano gold also has a sterilization effect, and under the multiple composite effect, the chitosan mono-guanidyl hydrochloride loaded nano gold/silver composite is used as a raw material of a sterilization solution, so that a more excellent sterilization effect can be achieved;
(2) Under the action of the first layer of sterilizing solution, the composite copper ions are used as raw materials of the reinforced antibacterial treatment solution, if gold and silver are used as the sterilizing raw materials, the cost is high, the sterilizing effect is partially improved after the copper ions are introduced, and the cost can be effectively reduced on the basis of improving the sterilizing effect;
(3) The first sterilization solution and the second sterilization solution are sprayed on the surface of the fabric by adopting a spraying process, so that the sterilization solution can be more uniformly attached to the surface of the fabric, and the attachment strength can be increased; in addition, compared with a dipping method, the spraying mode can effectively save raw materials and reduce the cost;
(4) The sterilizing fabric treated by the spraying process is more excellent in water washing resistance, and relatively excellent sterilizing effect can be kept after 100 times of water washing.
Detailed Description
The present application is further illustrated with reference to specific examples.
Example 1
The embodiment provides a preparation method of a washable antibacterial fabric, which comprises the following steps:
(1) Preparation of chitosan monoguanidine hydrochloride: weighing 4.5g of chitosan, adding 200mL of hydrochloric acid solution with the concentration of 0.2mol/L, and fully stirring for 4h; adjusting pH of chitosan solution to 8-9 with 50g/L sodium carbonate solution, washing with distilled water to pH 7.0-7.5, slightly squeezing to remove part of water, placing it back into three-hole flask, and heating to synthesis temperature; adding 2 times of sulfur trioxide urea, and keeping the temperature for 15min after the addition. After the reaction is finished, precipitating with 3 times volume of absolute ethyl alcohol, carrying out vacuum filtration, washing a filter cake with the absolute ethyl alcohol, drying at 60 ℃ in vacuum, grinding to obtain chitosan monoguanidine sulfite, dissolving the chitosan monoguanidine sulfite in water, heating to 50 +/-5 ℃, adding concentrated hydrochloric acid with equal amount of substances under stirring, stirring for reaction for 3 hours, filtering insoluble substances, washing the filter cake with the absolute ethyl alcohol for 2-3 times, and carrying out vacuum drying at 60 ℃ to obtain chitosan monoguanidine hydrochloride;
(2) The preparation method of the chitosan monoguanidine hydrochloride-loaded nano gold/silver compound comprises the following steps: dissolving chitosan monoguanidine hydrochloride in water, adding nanogold and nanosilver, performing ultrasonic treatment, and adding Tween80 to obtain a pre-emulsified water phase mixture;
wherein the molar ratio of the chitosan monoguanidine hydrochloride to the nano gold and nano silver is 1;
adding an emulsifier into petroleum ether and liquid paraffin according to the volume ratio of 3:1 preparing an oil phase solvent to obtain an oil phase mixture with the volume percentage concentration of the emulsifier being 5%;
adding the obtained water phase mixture into the oil phase mixture in a spraying mode, wherein the volume ratio of the water phase mixture to the oil phase mixture is 1:11, stirring for 50min, adding a cross-linking agent, namely succinaldehyde, wherein the addition amount of the cross-linking agent is that the molar ratio of aldehyde groups to amino groups in the chitosan monoguanidine hydrochloride is 5.5:1, reacting for 5.5 hours to obtain the composite antibacterial powder;
(3) Fabric pretreatment: the cotton fabric is cleaned, so that surface oil stains and impurities are washed off, and the adhesion capability of the antibacterial agent on the surface of the fiber fabric is prevented from being influenced;
(4) And (3) spray process finishing: putting the pretreated fabric into the initial position of a rolling roller of spraying equipment, adjusting the nozzle and the flow rate to be 9mL/min, wherein the speed of the rolling roller is 18mL/min, and starting an air pump to control the fabric to uniformly roll through the nozzle so that 0.05g/L of first bactericidal aqueous solution and 0.1g/L of second bactericidal aqueous solution can be sprayed on the surface of the fabric in sequence;
wherein the first bactericidal aqueous solution comprises chitosan monoguanidine hydrochloride-loaded nanogold/silver complex; the second aqueous antiseptic solution comprises copper nitrate;
(5) Shaping: and (3) carrying out setting finishing on the woven grey cloth, directly feeding the fabric sprayed with the sterilizing aqueous solution into setting equipment through a rolling roller, wherein the setting temperature is 100 ℃, and the setting time is 65min, and finally obtaining the antibacterial fabric.
Example 2
The embodiment provides a preparation method of a washable antibacterial fabric, which comprises the following steps:
(1) Preparation of chitosan monoguanidine hydrochloride: weighing 4.5g of chitosan, adding 200mL of hydrochloric acid solution with the concentration of 0.2mol/L, and fully stirring for 4 hours; adjusting pH of chitosan solution to 8-9 with 50g/L sodium carbonate solution, washing with distilled water to pH 7.0-7.5, slightly squeezing to remove part of water, placing back into three-hole flask, and heating to desired temperature for synthesis; adding 2 times of sulfur trioxide urea, and keeping the temperature for 15min after the addition. After the reaction is finished, precipitating by using absolute ethyl alcohol with the volume of 3 times, carrying out vacuum filtration, washing a filter cake by using the absolute ethyl alcohol, drying at 60 ℃ in vacuum, grinding to obtain chitosan monoguanidine sulfite, dissolving the chitosan monoguanidine sulfite in water, heating to (50 +/-5) DEG C, adding concentrated hydrochloric acid with the same amount as the substance under stirring, stirring for reaction for 3 hours, filtering out insoluble substances, washing the filter cake by using the absolute ethyl alcohol for 2-3 times, and carrying out vacuum drying at 60 ℃ to obtain chitosan monoguanidine hydrochloride;
(2) The preparation method of the chitosan monoguanidine hydrochloride-loaded nano gold/silver compound comprises the following steps: dissolving chitosan monoguanidine hydrochloride in water, adding nanogold and nanosilver, performing ultrasonic treatment, and adding Tween80 to obtain a pre-emulsified water phase mixture;
wherein the molar ratio of the chitosan monoguanidine hydrochloride to the nano gold and nano silver is 1.2;
adding an emulsifier into petroleum ether and liquid paraffin according to the volume ratio of 1:1 preparing an oil phase solvent to obtain an oil phase mixture with the volume percentage concentration of the emulsifier being 2%;
adding the obtained water phase mixture into the oil phase mixture in a spraying mode, wherein the volume ratio of the water phase mixture to the oil phase mixture is 1: stirring for 10-40 min, adding a cross-linking agent, namely succinaldehyde, wherein the addition amount of the cross-linking agent is that the molar ratio of aldehyde groups to amino groups in the chitosan monoguanidine hydrochloride is 5:1, reacting for 5 hours to obtain the composite antibacterial powder;
(3) Fabric pretreatment: the cotton fabric is cleaned, so that surface oil stains and impurities are washed off, and the adhesion capability of the antibacterial agent on the surface of the fiber fabric is prevented from being influenced;
(4) And (3) spray process finishing: putting the pretreated fabric into the initial position of a rolling roller of spraying equipment, adjusting the nozzle and the flow rate to be 8mL/min, and the speed of the rolling roller to be 17mL/min, starting an air pump to control the fabric to uniformly roll through the position of the nozzle, so that 0.01g/L of first bactericidal aqueous solution and 0.5g/L of second bactericidal aqueous solution can be sprayed on the surface of the fabric in sequence;
wherein the first bactericidal aqueous solution comprises chitosan monoguanidine hydrochloride-loaded nanogold/silver complex; the second aqueous antiseptic solution comprises cupric chloride;
(5) Shaping: and (3) carrying out setting finishing on the woven grey cloth, directly feeding the fabric sprayed with the sterilizing aqueous solution into setting equipment through a rolling roller, wherein the setting temperature is 90 ℃, and the setting time is 60min, and finally obtaining the antibacterial fabric.
Example 3
The embodiment provides a preparation method of a washable antibacterial fabric, which comprises the following steps:
(1) Preparation of chitosan monoguanidine hydrochloride: weighing 4.5g of chitosan, adding 200mL of hydrochloric acid solution with the concentration of 0.2mol/L, and fully stirring for 4 hours; adjusting pH of chitosan solution to 8-9 with 50g/L sodium carbonate solution, washing with distilled water to pH 7.0-7.5, slightly squeezing to remove part of water, placing it back into three-hole flask, and heating to synthesis temperature; adding 2 times of sulfur trioxide urea, and keeping the temperature for 15min after the addition. After the reaction is finished, precipitating by using absolute ethyl alcohol with the volume of 3 times, carrying out vacuum filtration, washing a filter cake by using the absolute ethyl alcohol, drying at 60 ℃ in vacuum, grinding to obtain chitosan monoguanidine sulfite, dissolving the chitosan monoguanidine sulfite in water, heating to (50 +/-5) DEG C, adding concentrated hydrochloric acid with the same amount as the substance under stirring, stirring for reaction for 3 hours, filtering out insoluble substances, washing the filter cake by using the absolute ethyl alcohol for 2-3 times, and carrying out vacuum drying at 60 ℃ to obtain chitosan monoguanidine hydrochloride;
(2) The preparation method of the chitosan monoguanidine hydrochloride-loaded nano gold/silver compound comprises the following steps: dissolving chitosan monoguanidine hydrochloride in water, adding nanogold and nanosilver, performing ultrasonic treatment, and adding Tween80 to obtain a pre-emulsified water phase mixture;
the molar ratio of the chitosan monoguanidine hydrochloride to the nano gold and the nano silver is 1;
adding an emulsifier into petroleum ether and liquid paraffin according to the volume ratio of the petroleum ether to the liquid paraffin of 5:1 preparing an oil phase solvent to obtain an oil phase mixture with the volume percentage concentration of the emulsifier being 8%;
adding the obtained water phase mixture into the oil phase mixture in a spraying mode, wherein the volume ratio of the water phase mixture to the oil phase mixture is 1:12, stirring for 60min, adding a cross-linking agent, namely succinaldehyde, wherein the addition amount of the cross-linking agent is that the molar ratio of aldehyde groups to amino groups in the chitosan monoguanidine hydrochloride is 6:1, reacting for 6 hours to obtain the composite antibacterial powder;
(3) Fabric pretreatment: the cotton fabric is cleaned, so that surface oil stains and impurities are washed off, and the adhesion capability of the antibacterial agent on the surface of the fiber fabric is prevented from being influenced;
(4) And (3) spray process finishing: putting the pretreated fabric into the initial position of a rolling roller of spraying equipment, adjusting the nozzle and the flow rate to be 10mL/min, and the speed of the rolling roller to be 20mL/min, starting an air pump to control the fabric to uniformly roll through the position of the nozzle, so that 0.1g/L of first bactericidal aqueous solution and 2g/L of second bactericidal aqueous solution can be sprayed on the surface of the fabric in sequence;
wherein the first bactericidal aqueous solution comprises chitosan monoguanidine hydrochloride-loaded nanogold/silver complex; the second aqueous germicidal solution includes ortho-hydroxycyclopentendione;
(5) Shaping: and (3) carrying out setting finishing on the woven grey cloth, directly feeding the fabric sprayed with the sterilizing aqueous solution into setting equipment through a rolling roller, wherein the setting temperature is 110 ℃, and the setting time is 70min, and finally obtaining the antibacterial fabric.
Example 4
The embodiment provides a preparation method of a washable antibacterial fabric, which comprises the following steps:
(1) Preparation of chitosan monoguanidine hydrochloride: weighing 4.5g of chitosan, adding 200mL of hydrochloric acid solution with the concentration of 0.2mol/L, and fully stirring for 4 hours; adjusting pH of chitosan solution to 8-9 with 50g/L sodium carbonate solution, washing with distilled water to pH 7.0-7.5, slightly squeezing to remove part of water, placing it back into three-hole flask, and heating to synthesis temperature; adding 2 times of sulfur trioxide urea, and keeping the temperature for 15min after the addition. After the reaction is finished, precipitating with 3 times volume of absolute ethyl alcohol, carrying out vacuum filtration, washing a filter cake with the absolute ethyl alcohol, drying at 60 ℃ in vacuum, grinding to obtain chitosan monoguanidine sulfite, dissolving the chitosan monoguanidine sulfite in water, heating to 50 +/-5 ℃, adding concentrated hydrochloric acid with equal amount of substances under stirring, stirring for reaction for 3 hours, filtering insoluble substances, washing the filter cake with the absolute ethyl alcohol for 2-3 times, and carrying out vacuum drying at 60 ℃ to obtain chitosan monoguanidine hydrochloride;
(2) The preparation method of the chitosan monoguanidine hydrochloride-loaded nano gold/silver compound comprises the following steps: dissolving chitosan monoguanidine hydrochloride in water, adding nano gold and nano silver, performing ultrasonic treatment, and adding Tween80 to obtain a pre-emulsified water phase mixture;
wherein the molar ratio of the chitosan monoguanidine hydrochloride to the nano gold and nano silver is 1.5;
adding an emulsifier into petroleum ether and liquid paraffin according to the volume ratio of the petroleum ether to the liquid paraffin of 5:1 preparing an oil phase solvent to obtain an oil phase mixture with the volume percentage concentration of the emulsifier being 2%;
adding the obtained water phase mixture into the oil phase mixture in a spraying mode, wherein the volume ratio of the water phase mixture to the oil phase mixture is 1: stirring for 40min, adding a cross-linking agent, namely succinaldehyde, wherein the addition amount of the cross-linking agent is that the molar ratio of aldehyde groups to amino groups in the chitosan monoguanidine hydrochloride is 6:1, reacting for 6 hours to obtain the composite antibacterial powder;
(3) Fabric pretreatment: the cotton fabric is cleaned, so that surface oil stains and impurities are washed off, and the adhesion capability of the antibacterial agent on the surface of the fiber fabric is prevented from being influenced;
(4) And (3) spray process finishing: putting the pretreated fabric into the initial position of a rolling roller of spraying equipment, adjusting the nozzle and the flow rate to be 10mL/min, and the speed of the rolling roller to be 20mL/min, starting an air pump to control the fabric to uniformly roll through the position of the nozzle, so that 0.1g/L of first bactericidal aqueous solution and 0.5g/L of second bactericidal aqueous solution can be sprayed on the surface of the fabric in sequence;
wherein the first bactericidal aqueous solution comprises chitosan monoguanidine hydrochloride-loaded nano gold/silver complexes; the second aqueous antiseptic solution comprises copper nitrate and copper chloride in a molar ratio of 1:1;
(5) Shaping: and (3) carrying out setting finishing on the woven grey cloth, directly feeding the fabric sprayed by the sterilizing aqueous solution into setting equipment through a rolling roller, wherein the setting temperature is 90 ℃, and the setting time is 70min, thus finally obtaining the antibacterial fabric.
Comparative example 1
Comparative example 1 only the first bactericidal liquid was used as compared to example 1, and the other conditions were the same.
Comparative example 2
Comparative example 2 the second bactericidal solution was used alone, and the other conditions were the same as in example 1.
Comparative example 3
Comparative example 3 is chitosan monoguanidine hydrochloride supported nanogold complex compared with the first sterilizing solution in example 1, and other conditions are the same.
Comparative example 4
Comparative example 4 is chitosan monoguanidine hydrochloride supported nano silver complex compared to the first antiseptic solution in example 1, and other conditions are the same.
Comparative example 5
Comparative example 5 is chitosan monoguanidine hydrochloride, the first antiseptic solution of example 1, and the other conditions are the same.
Performance testing
In order to verify the bacteriostatic performance of the antibacterial fabric prepared in the embodiment and the comparative example of the invention and the bacteriostatic performance after washing, the following tests are carried out:
after 100 times of washing, the antibacterial performance is tested according to GB/T20944.2-2007 evaluation part 2 of antibacterial performance of textiles: absorption law test, the washing method refers to the washing method of a household double-drum washing machine in GB/T20944.3-2008. The evaluation of the bacteriostasis effect is that the bacteriostasis rate to staphylococcus aureus and escherichia coli is more than or equal to 70 percent, or the bacteriostasis rate to candida albicans is more than or equal to 60 percent, and the sample has the antibacterial effect. The results of the performance tests of the examples and comparative examples of the present invention are shown in table 1 below:
table 1: antibacterial performance test result of fabric washed by water for 100 times
| Group of | E.coli/%) | Staphylococcus aureus/%) |
| Example 1 | 99.4 | 99.2 |
| Example 2 | 99.0 | 99.1 |
| Example 3 | 99.3 | 99.1 |
| Example 4 | 99.2 | 99.3 |
| Comparative example 1 | 75.8 | 75.5 |
| Comparative example 2 | 69.5 | 67.1 |
| Comparative example 3 | 91.2 | 90.3 |
| Comparative example 4 | 88.1 | 85.5 |
| Comparative example 5 | 66.7 | 65.4 |
As can be seen from Table 1: the antibacterial fabric in the embodiment of the application still has excellent bacteriostatic action on escherichia coli and staphylococcus aureus after being washed for 100 times.
Compared with the example 1, only the first sterilizing liquid is used in the comparative example 1, only the second sterilizing liquid is used in the comparative example 2, the first sterilizing liquid in the comparative example 3 is chitosan monoguanidine hydrochloride supported nano-gold compound, the first sterilizing liquid in the comparative example 4 is chitosan monoguanidine hydrochloride supported nano-silver compound, and the first sterilizing liquid in the comparative example 5 is chitosan monoguanidine hydrochloride, the test results show that: the selection of the sterilizing liquid and the selection of the composite raw materials in the first sterilizing liquid both have obvious influence on the antibacterial effect of the fabric washed by water for 100 times.
The specific embodiments are only for explaining the present application and are not limiting to the present application, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent law within the scope of the claims of the present application.
Claims (9)
1. A preparation method of a washable antibacterial fabric is characterized by comprising the following steps: carrying out spray process finishing on the pretreated fabric, namely putting the fabric into the initial position of a rolling roller of spray equipment, adjusting the nozzle and the flow rate to be 8-10mL/min, and the speed of the rolling roller to be 17-20mL/min, starting an air pump to control the fabric to uniformly roll through the nozzle, so that 0.01-0.1g/L of first bactericidal solution and 0.5-2g/L of second bactericidal solution can be sprayed on the surface of the fabric in sequence; obtaining the antibacterial fabric after shaping;
wherein the first antiseptic solution comprises chitosan monoguanidine hydrochloride loaded nanogold/silver complex; the second antiseptic solution comprises one or more of copper nitrate, copper chloride and o-hydroxycyclopentendione.
2. The method for preparing the washable antibacterial fabric according to claim 1, wherein the pretreatment step comprises the following steps: the cotton fabric is cleaned, and surface oil stains and impurities are washed away.
3. The preparation method of the water-fast antibacterial fabric according to claim 1, wherein the shaping comprises the steps of carrying out shaping finishing on the woven grey fabric, enabling the fabric sprayed with the sterilizing solution to directly enter shaping equipment through a rolling roller, wherein the shaping temperature is 90-110 ℃, and the shaping time is 60-70min, and finally obtaining the antibacterial fabric.
4. The method for preparing the washable antibacterial fabric as claimed in claim 1, wherein the chitosan monoguanidine hydrochloride is prepared from chitosan and thiourea dioxide.
5. The preparation method of the washable antibacterial fabric as claimed in claim 1, wherein the preparation method of the chitosan monoguanidine hydrochloride-loaded nanogold/silver composite comprises the following steps: dissolving chitosan monoguanidine hydrochloride in water, adding nanogold and nanosilver, performing ultrasonic treatment, and adding Tween80 to obtain a pre-emulsified water phase mixture; adding an emulsifier into petroleum ether and liquid paraffin to obtain an oil phase mixture; and adding the obtained water phase mixture into the oil phase mixture in a spraying mode, adding a cross-linking agent of succinaldehyde, and reacting to obtain the composite antibacterial powder.
6. The preparation method of the washable antibacterial fabric according to claim 5, wherein the molar ratio of the chitosan monoguanidine hydrochloride to the nano-gold and nano-silver is 1.2-0.5.
7. The method for preparing the washable antibacterial fabric according to claim 5, wherein the volume percentage concentration of Tween80 in the water phase is 5-6%.
8. The method for preparing the washable antibacterial fabric according to claim 5, wherein the volume ratio of the water phase mixture to the oil phase mixture is 1: (10-12).
9. A washable antibacterial fabric, characterized by being prepared by the method of any one of claims 1 to 8.
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