CN115161994A - Janus protective material with photo-thermal antibacterial function and preparation method thereof - Google Patents

Janus protective material with photo-thermal antibacterial function and preparation method thereof Download PDF

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CN115161994A
CN115161994A CN202210712850.9A CN202210712850A CN115161994A CN 115161994 A CN115161994 A CN 115161994A CN 202210712850 A CN202210712850 A CN 202210712850A CN 115161994 A CN115161994 A CN 115161994A
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janus
protective material
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woven fabric
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CN115161994B (en
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黄卫春
王梦可
訾由
胡怡
朱君
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Nantong University
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • 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
    • D06M11/51—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 sulfur, selenium, tellurium, polonium or compounds thereof
    • D06M11/53—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 sulfur, selenium, tellurium, polonium or compounds thereof with hydrogen sulfide or its salts; with polysulfides
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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
    • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
    • D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
    • D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
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    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
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    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
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    • D06M2200/12—Hydrophobic properties

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Abstract

The invention discloses a Janus protective material with a photothermal antibacterial function and a preparation method thereof, wherein the Janus protective material comprises the following steps: a low-temperature solvothermal method is adopted, and SnS nanosheets with a photothermal function grow in situ on one surface of the medical protective product; after washing and drying, grafting low surface energy molecules on one surface of the growing SnS nanosheet by means of a Chemical Vapor Deposition (CVD) device, endowing the surface with super-hydrophobic performance, and constructing the Janus protective material on the dual scales of wettability and microstructure. The SnS photo-thermal functional material is introduced, so that photo-thermal sterilization of the protective product is realized; by further super-hydrophobization, the possibility of bacteria adhesion and growth on the surface of the material is greatly reduced; by constructing the Janus structure, the antibacterial performance of the material is improved, and the skin-friendly property and the air permeability of the contact surface of the protective material and a human body are kept to the greatest extent, so that the practical application requirement of the medical protective material is met.

Description

Janus protective material with photo-thermal antibacterial function and preparation method thereof
Technical Field
The invention relates to a preparation method of a Janus protective material with a photothermal antibacterial function, and belongs to the technical field of preparation of photothermal antibacterial functional materials and biomedical protective materials.
Background
The novel material with excellent antibacterial performance has very important market demand and huge market value in the life health field, can effectively guarantee life safety, and hinders the appreciation and secondary propagation of bacteria. At present, the medical protective antibacterial material mostly adopts woven and non-woven fiber materials, such as polypropylene melt-blown fabric, polypropylene non-woven fabric, polypropylene spun-bonded-melt-blown-spun composite non-woven fabric and the like. However, the antibacterial performance of the existing medical protective materials is not ideal, and most of the materials are disposable, so that the materials are not recyclable, and the like, thereby causing the waste of a large amount of medical resources. Therefore, the medical protective material with excellent sterilization function is researched and developed, the waste of resources can be effectively reduced, the antibacterial capability of the material is improved, the service life of the material is prolonged, and the medical protective material has important social value and scientific significance to national economy and human life health. As a new technology, photo-thermal sterilization can convert photo-energy into local heat energy by utilizing the particularity of a band gap of a photo-thermal functional material, further kills bacteria, has the advantages of low energy consumption, environmental friendliness, high safety and the like, and is expected to realize remote accurate sterilization of protective articles.
CN111000566A discloses a wearable flexible fabric with photothermal effect and antibacterial function, which utilizes photothermal effect of carbon nano tubes and silver particles to endow the material with antibacterial function; CN113633627A discloses preparation and application of a transparent photothermal bacteriostatic hydrogel patch, which comprises a hydrogel patch substrate and photothermal conversion materials dispersed in the hydrogel patch substrate, wherein the hydrogel patch can effectively isolate a wound from contacting with the external environment, avoid invasion of pathogens, and can heat to kill bacteria through photothermal conversion under the illumination condition; CN113332484A discloses a preparation method of a photothermal antibacterial nanofiber membrane, and the gold nanoparticle-doped nanofiber membrane obtained by an electrostatic spinning method has excellent photothermal effect, excellent photothermal antibacterial effect and good biocompatibility; CN110983483A discloses a method for preparing a thermo-moisture responsive fiber with photothermal conversion and antibacterial properties, which utilizes the difference of deformation amounts generated by hydrophilic antibacterial fibers and hydrophobic photothermal conversion fibers to photothermal stimulation and humidity stimulation to generate bending deformation in different directions, thereby realizing distinguishable responses to photothermal and humidity. However, as for the photothermal antibacterial material having a specific Janus microstructure and wettability, no precedent has been reported so far. The photo-thermal antibacterial protective material with the Janus structure is constructed, so that one surface of the photo-thermal antibacterial protective material has excellent antibacterial performance, and the other surface still has skin-friendly property and air permeability, and has important significance for realizing the practical application of the photo-thermal antibacterial protective material at an early date and achieving the integration of antibacterial and sterilization functions.
Disclosure of Invention
The invention aims to provide a Janus protective material with a photothermal antibacterial function and a preparation method thereof.
1. SnS nanosheet grown by solvothermal method
The preparation method of the SnS nanosheet coated protective material adopts a one-step solvothermal method, wherein a tin source material and a sulfur source material are respectively dispersed in a solvent with the same volume according to a certain molar ratio, and are magnetically stirred for 5-20 min; then, the two solutions are sequentially added into the same solvent dissolved with the surfactant, and are magnetically stirred for 5-20 min; after uniform mixing, transferring the mixed solution into a reaction kettle with a substrate, and carrying out solvothermal reaction for 4-48 h at 130-210 ℃; and after the reaction kettle is naturally cooled to room temperature, washing the substrate with distilled water and absolute ethyl alcohol for three times respectively, and drying in vacuum at 40-100 ℃ to obtain the functional protective material coated with the SnS nanosheets on the surface.
Wherein the loading amount of the SnS nanosheet in the protective material substrate is 0.5-35 wt%.
The tin source material is a tin salt compound including SnCl 2 ·2H 2 O、SnCl 2 、SnCl 4 ·5H 2 O、SnCl 4 、Sn(COO) 2 、SnSO 4 One or two of them.
The sulfur source material is one or two of thioacetamide, thiourea, thioisobutyramide, thioacetamide, ethylthioacetamide, allylthiourea, thioacetic acid, thiobenzamide, dithiourea and thioacetanilide.
The molar ratio of the tin source material to the sulfur source material is 1:0.1 to 1:10.
the solvent is one or two of deionized water, ethylene glycol, isopropanol and n-butanol, and the concentration of the tin source material and the sulfur source material in the solvent is 0.01-0.1 mmol/mL.
The surfactant is one or two of sodium dodecyl sulfate, polyvinylpyrrolidone, tween-80, polyethylene glycol, polyoxyethylene lauryl ether and sodium stearate, and the concentration of the surfactant is 0.005-0.1 g/mL.
The protective material substrate is one or two or three of polypropylene melt-blown fabric, polypropylene non-woven fabric, polyethylene melt-blown fabric, polypropylene spun-bonded fabric, polyester fiber and wood pulp compounded spunlace fabric, high polymer coated fabric, polyethylene non-woven fabric, polypropylene spun-blown composite non-woven fabric, polypropylene spun-blown-spun composite non-woven fabric, polyethylene spun-blown-spun composite non-woven fabric, polypropylene-polyethylene melt-blown fabric and polypropylene-polyethylene blended non-woven fabric. Due to the hydrophobic property of the substrate, the substrate always floats on the surface of the solvent in the solvothermal reaction, and only one surface of the substrate is kept in contact with the solvent, so that the SnS coated protective material with the Janus microstructure is obtained.
2. CVD deposition of low surface energy materials
And (3) placing the modified protective material and the low-surface-energy substance in the previous step in parallel in the same closed container by adopting a Chemical Vapor Deposition (CVD) method, wherein one surface for growing the SnS nanosheets faces upwards, vacuumizing to 0.06-0.1 MPa, keeping for 10-60 min, then exhausting gas, and placing the sample at 60-120 ℃ for curing for 1-10 h.
Wherein the low surface energy substance is one or two of polydimethylsiloxane and a curing agent thereof, trimethylchlorosilane, dimethyldichlorosilane, octadecyltrichlorosilane, octadecyltriethoxysilane, octadecyltrimethoxysilane, perfluorooctyltrichlorosilane and perfluorodecyltriethoxysilane, and the dosage of the low surface energy substance is 10-2000 mu L.
In summary, compared with the prior art, the Janus protective material with the photo-thermal antibacterial function prepared by the invention has the following advantages:
1. according to the Janus photo-thermal antibacterial functional material prepared in the invention, one surface grows with the SnS nanosheet and has super-hydrophobic property, the other surface keeps original skin-friendly property and air permeability, and the dual Janus structure with micro-scale and wettability has specificity in the field of biomedical protective materials;
2. the Janus protective material with the photothermal antibacterial function, which is prepared in the invention, can realize the integrated application of superhydrophobic antibacterial and photothermal sterilization, on one hand, the superhydrophobicity of the Janus protective material can greatly reduce the adhesion of bacteria on the surface of the material, and on the other hand, the introduction of SnS nanosheets with the photothermal function can quickly kill a small amount of bacteria attached to the surface of the material under the illumination condition, so that reliable dual protection is realized;
3. the Janus protective material with the photo-thermal antibacterial function prepared in the invention is 1.0W cm -2 Under the irradiation of simulated sunlight with the density, the temperature can be quickly raised to 132 ℃ within 20s, and the application of the protective material with the photothermal function in the fields of photothermal sterilization and biomedical materials is greatly promoted;
4. the surface water contact angle of the Janus photo-thermal functional material subjected to CVD treatment is more than 150 degrees, and the volume of a test water drop is 5 mu L;
5. the antibacterial and sterilization integrated performance of the Janus photo-thermal functional material is as follows: the super-hydrophobic property of the surface effectively reduces the adhesion of bacteria; the bacteria attached to the surface can be killed rapidly under the condition of illumination, and the inhibition rate of the bacteria on gram positive bacteria and gram negative bacteria can reach more than 90 percent;
6. the Janus photo-thermal functional material is 0.1-0.5W cm -2 The temperature can be raised to 53-130 ℃ within 50s under the irradiation of the light intensity of (2).
Drawings
FIG. 1 is a view showing that the photo-thermal antibacterial polypropylene melt-blown fabric prepared in example 2 is 1.0W cm -2 Simulating an infrared imaging picture after the sunlight irradiates for 20 s.
FIG. 2 is a photo-thermal antibacterial test of Streptococcus mutans using the photo-thermal antibacterial polypropylene meltblown prepared in example 2, wherein the growth of colonies on the surface of the medium is shown on the left side after illumination, and the growth of colonies on the surface of the medium without illumination is shown on the right side.
Detailed Description
The preparation and performance of the Janus protective material with photothermal and antibacterial functions of the invention are further illustrated by the following specific examples.
Example 1
1.0mmol of SnCl 2 ·2H 2 O and 1.0mmol thioacetamide are respectively and uniformly dispersed in 1.6mL isopropanol and are magnetically stirred for 20min; then 0.5g of polyvinylpyrrolidone is dispersed in 30mL of isopropanol and is fully dissolved by magnetic stirring for 30min; then SnCl 2 ·2H 2 Sequentially adding the dispersion liquid of O and thioacetamide into an isopropanol solution dissolved with polyvinylpyrrolidone, and magnetically stirring for 30min; after uniform mixing, transferring the mixed solution into a liner of a polytetrafluoroethylene reaction kettle, then placing a polypropylene non-woven fabric on the surface of a solvent, sealing the solvent by a stainless steel reaction kettle, and carrying out solvothermal reaction for 12 hours at 160 ℃; and after the reaction kettle is naturally cooled to room temperature, respectively centrifugally washing the reaction kettle for three times by using distilled water and absolute ethyl alcohol, and drying the reaction kettle in vacuum at 40 ℃ to obtain the Janus polypropylene non-woven fabric coated with the SnS nanosheets.
Putting 100 mu L of octadecyl trichlorosilane in a glass container, placing the octadecyl trichlorosilane and the Janus polypropylene non-woven fabric obtained in the previous step in a CVD device in parallel, and vacuumizing to 0.075MPa; keeping for 10min, deflating, taking out the polypropylene non-woven fabric, and curing at 80 ℃ for 2h to obtain the super-hydrophobic Janus polypropylene non-woven fabric.
Example 2
1.0mmol of SnCl 2 ·2H 2 O and 1.0mmol thioacetamide are respectively and uniformly dispersed in 1.6mL isopropanol and are magnetically stirred for 20min; then 0.5g of polyvinylpyrrolidone is dispersed in 30mL of isopropanol and is fully dissolved by magnetic stirring for 30min; then SnCl 2 ·2H 2 Sequentially adding the dispersion liquid of O and thioacetamide into an isopropanol solution dissolved with polyvinylpyrrolidone, and magnetically stirring for 30min; after uniform mixing, transferring the mixed solution into a lining of a polytetrafluoroethylene reaction kettle, then placing polypropylene melt-blown cloth on the surface of a solvent, sealing the solvent by a stainless steel reaction kettle, and carrying out solvothermal reaction for 12 hours at 160 ℃; and after the reaction kettle is naturally cooled to room temperature, respectively centrifugally washing the reaction kettle for three times by using distilled water and absolute ethyl alcohol, and drying the reaction kettle in vacuum at 40 ℃ to obtain the Janus polypropylene melt-blown fabric coated with the SnS nanosheets.
Putting 200 mu L of octadecyl trichlorosilane in a glass container, placing the octadecyl trichlorosilane and the Janus polypropylene melt-blown cloth obtained in the previous step in a CVD device in parallel, and vacuumizing to 0.075MPa; keeping for 10min, deflating, taking out the polypropylene melt-blown fabric, and curing for 2h at the temperature of 80 ℃ to obtain the super-hydrophobized Janus polypropylene melt-blown fabric.
Example 3
1.0mmol of SnCl 2 ·2H 2 O and 1.0mmol thioacetamide are respectively and uniformly dispersed in 1.6mL isopropanol and are magnetically stirred for 20min; then 0.5g of polyvinylpyrrolidone is dispersed in 30mL of isopropanol and is fully dissolved by magnetic stirring for 30min; then SnCl 2 ·2H 2 Sequentially adding the dispersion liquid of O and thioacetamide into an isopropanol solution dissolved with polyvinylpyrrolidone, and magnetically stirring for 30min; after uniform mixing, transferring the mixed solution into a liner of a polytetrafluoroethylene reaction kettle, then placing a polypropylene non-woven fabric on the surface of a solvent, sealing the solvent by a stainless steel reaction kettle, and carrying out solvothermal reaction for 6 hours at 180 ℃; and after the reaction kettle is naturally cooled to room temperature, respectively centrifugally washing the reaction kettle for three times by using distilled water and absolute ethyl alcohol, and drying the reaction kettle in vacuum at 40 ℃ to obtain the Janus polypropylene non-woven fabric coated with the SnS nanosheets.
Taking 100 mu L of trimethyl chloride in a glass container, placing the glass container and the Janus polypropylene non-woven fabric obtained in the previous step in a CVD device in parallel, and vacuumizing to 0.075MPa; keeping for 10min, deflating, taking out the polypropylene non-woven fabric, and curing at 80 ℃ for 2h to obtain the super-hydrophobic Janus polypropylene non-woven fabric.
Example 4
1.0mmol of SnCl 2 ·2H 2 O and 1.0mmol of thioacetamide are respectively and uniformly dispersed in 1.6mL of isopropanol and are magnetically stirred for 20min; then 0.5g of polyvinylpyrrolidone is dispersed in 30mL of isopropanol and is fully dissolved by magnetic stirring for 30min; then SnCl 2 ·2H 2 Sequentially adding the dispersion liquid of O and thioacetamide into an isopropanol solution dissolved with polyvinylpyrrolidone, and magnetically stirring for 30min; after uniform mixing, transferring the mixed solution into a liner of a polytetrafluoroethylene reaction kettle, then placing a polypropylene non-woven fabric on the surface of a solvent, sealing the solvent by a stainless steel reaction kettle, and carrying out solvothermal reaction for 12 hours at 160 ℃; and after the reaction kettle is naturally cooled to room temperature, respectively centrifugally washing the reaction kettle for three times by using distilled water and absolute ethyl alcohol, and drying the reaction kettle in vacuum at 40 ℃ to obtain the Janus polypropylene non-woven fabric coated with the SnS nanosheets.
Putting 200 mu L of polydimethylsiloxane into a glass container, placing the polydimethylsiloxane and the Janus polypropylene non-woven fabric obtained in the previous step in a CVD device in parallel, and vacuumizing to 0.075MPa; keeping for 10min, deflating, taking out the polypropylene non-woven fabric, and curing at 80 ℃ for 2h to obtain the super-hydrophobic Janus polypropylene non-woven fabric.
Example 5
1.0mmol of SnCl 2 ·2H 2 O and 1.0mmol thioacetamide are respectively and uniformly dispersed in 1.6mL isopropanol and are magnetically stirred for 20min; then 0.5g of polyvinylpyrrolidone is dispersed in 30mL of isopropanol and is fully dissolved by magnetic stirring for 30min; then SnCl 2 ·2H 2 Sequentially adding the dispersion liquid of O and thioacetamide into an isopropanol solution dissolved with polyvinylpyrrolidone, and magnetically stirring for 30min; after uniform mixing, transferring the mixed solution into a liner of a polytetrafluoroethylene reaction kettle, then placing polypropylene non-woven fabric on the surface of a solvent, sealing the solvent by a stainless steel reaction kettle, and carrying out solvothermal reaction for 12 hours at 160 ℃; and after the reaction kettle is naturally cooled to room temperature, respectively centrifugally washing the reaction kettle for three times by using distilled water and absolute ethyl alcohol, and drying the reaction kettle in vacuum at 40 ℃ to obtain the Janus polypropylene non-woven fabric coated with the SnS nanosheets.
Putting 300 mu L of dimethyldichlorosilane into a glass container, placing the dimethyldichlorosilane and the Janus polypropylene non-woven fabric obtained in the previous step in a CVD device in parallel, and vacuumizing to 0.075MPa; keeping for 10min, deflating, taking out the polypropylene non-woven fabric, and curing at 80 ℃ for 2h to obtain the super-hydrophobic Janus polypropylene non-woven fabric.
Example 6
1.0mmol of SnCl 2 ·2H 2 O and 1.0mmol thioacetamide are respectively and uniformly dispersed in 1.6mL isopropanol and are magnetically stirred for 20min; then 0.5g of polyvinylpyrrolidone is dispersed in 30mL of isopropanol and is fully dissolved by magnetic stirring for 30min; then SnCl 2 ·2H 2 Sequentially adding the dispersion liquid of O and thioacetamide into an isopropanol solution dissolved with polyvinylpyrrolidone, and magnetically stirring for 30min; after uniform mixing, transferring the mixed solution into a liner of a polytetrafluoroethylene reaction kettle, then placing polyethylene non-woven fabrics on the surface of a solvent, sealing the solvent by a stainless steel reaction kettle, and carrying out solvothermal reaction for 12 hours at 160 ℃; and after the reaction kettle is naturally cooled to room temperature, respectively centrifugally washing the reaction kettle for three times by using distilled water and absolute ethyl alcohol, and drying the reaction kettle in vacuum at 40 ℃ to obtain the Janus polyethylene non-woven fabric coated with the SnS nanosheets.
Putting 200 mu L of octadecyl trichlorosilane in a glass container, placing the octadecyl trichlorosilane and the Janus polyethylene non-woven fabric obtained in the previous step in a CVD device in parallel, and vacuumizing to 0.075MPa; keeping for 10min, deflating, taking out the polyethylene non-woven fabric, and curing at 80 ℃ for 2h to obtain the super-hydrophobic Janus polyethylene non-woven fabric.
The photo-thermal antibacterial Janus polypropylene meltblown prepared in example 2 was subjected to performance evaluation:
1. photothermal performance evaluation of photothermal antibacterial Janus polypropylene melt-blown fabric
The test method comprises the following steps: adopting a 350W short-arc xenon lamp to simulate sunlight to irradiate the Janus polypropylene melt-blown fabric, wherein the energy density is 0.1-1.0W cm -2 The irradiation distance is 25cm; the change of the surface temperature of the superhydrophobic sponge with the irradiation time was recorded using an ST 9450A + type thermal imager of a hima meter, the distance between the thermal imager and the sample being set at 25cm.
FIG. 1 is a view showing that the photo-thermal antibacterial polypropylene melt-blown fabric prepared in example 2 is 1.0W cm -2 Simulating sunlight irradiationThe surface temperature of the infrared imaging picture after 20s is 131.3 ℃.
2. Evaluation of antibacterial performance of photo-thermal antibacterial Janus polypropylene melt-blown fabric
The test method comprises the following steps: 1) Take 1mL 10 7 CFU mL -1 Dripping the culture solution of the streptococcus mutans with the concentration on the surface of sterilized Janus polypropylene melt-blown cloth, and culturing for 3h in the environment of 37 ℃; 2) Washing the surface of the sample with sterilized water for 3 times; 3) Soaking the washed sample in 4mL of sterilized water, and performing ultrasonic treatment for 1min; 4) Spreading 100 μ L of the solution after ultrasonic treatment on agar plate, and culturing at 37 deg.C for 24 hr; 5) Colonies on agar plates were photographed and counted.
Photo-thermal antibacterial experiment: after the above step 2), at 0.1W cm -2 Irradiating for 1min under simulated sunlight, and repeating the steps from 3) to 5).
FIG. 2 is a diagram showing the photothermal antimicrobial test of Streptococcus mutans using the photothermal antimicrobial polypropylene meltblown prepared in example 2, wherein the growth of colonies on the medium surface after illumination is shown on the left side, and the growth of colonies on the medium surface without illumination is shown on the right side. As can be seen from comparison, after the irradiation treatment, no bacterial colony grows on the surface of the Janus polypropylene meltblown, but bacterial colony grows on the surface of the Janus polypropylene meltblown without the irradiation treatment, which proves that the Janus polypropylene meltblown prepared in example 2 has excellent photo-thermal antibacterial ability.

Claims (6)

1. A Janus protective material with a photo-thermal antibacterial function is characterized in that the Janus protective material has wettability and microstructure with different double faces, one face of the Janus protective material grows with SnS nanosheets and has super-hydrophobic performance, and the other face of the Janus protective material keeps original wettability and microstructure unchanged.
2. A preparation method of a Janus protective material with a photo-thermal antibacterial function is characterized in that a low-temperature solvothermal method is adopted, and SnS nanosheets with the photo-thermal function are grown in situ on one surface, in contact with a solvent, of a protective material substrate; after washing and drying, placing the protective material substrate for growing the SnS nanosheets and the low-surface-energy substance in the same closed container in parallel by adopting a chemical vapor deposition method, wherein one surface for growing the SnS nanosheets faces upwards, vacuumizing to 0.06-0.1 MPa, keeping for 10-60 min, then exhausting gas, and placing the sample at 60-120 ℃ for curing for 1-10 h.
3. The method for preparing a Janus protective material with a photothermal antibacterial function as claimed in claim 2, wherein: the protective material substrate is one or two or three of polypropylene melt-blown fabric, polypropylene non-woven fabric, polyethylene melt-blown fabric, polypropylene spun-bonded fabric, polyester fiber and wood pulp compounded spunlace fabric, high polymer coated fabric, polyethylene non-woven fabric, polypropylene spun-bonded-melt-blown composite non-woven fabric, polypropylene spun-bonded-melt-bonded composite non-woven fabric, polyethylene spun-bonded-melt-blown-spun composite non-woven fabric, polypropylene-polyethylene melt-blown fabric and polypropylene-polyethylene blended non-woven fabric.
4. The method for preparing a Janus protective material with a photothermal antibacterial function as claimed in claim 2, wherein: the load capacity of the SnS nanosheet in the protective material substrate is 0.5-35 wt%.
5. The method for preparing a Janus protective material with a photothermal antibacterial function according to claim 2, wherein: the low surface energy substance is one or two of polydimethylsiloxane and a curing agent thereof, trimethylchlorosilane, dimethyldichlorosilane, octadecyltrichlorosilane, octadecyltriethoxysilane, octadecyltrimethoxysilane, perfluorooctyltrichlorosilane and perfluorodecyltriethoxysilane.
6. The method for preparing a Janus protective material with a photothermal antibacterial function as claimed in claim 2, wherein: the dosage of the low surface energy substance is 10-2000 mu L.
CN202210712850.9A 2022-06-22 2022-06-22 Janus protective material with photothermal antibacterial function and preparation method thereof Active CN115161994B (en)

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CN114014353A (en) * 2021-12-16 2022-02-08 南通大学 SnS with photothermal function2Nanosheet array structure and preparation method thereof
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