CN111676695B - Dual-antibacterial non-woven fabric and preparation method thereof - Google Patents
Dual-antibacterial non-woven fabric and preparation method thereof Download PDFInfo
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- CN111676695B CN111676695B CN202010567112.0A CN202010567112A CN111676695B CN 111676695 B CN111676695 B CN 111676695B CN 202010567112 A CN202010567112 A CN 202010567112A CN 111676695 B CN111676695 B CN 111676695B
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 99
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 51
- 238000002791 soaking Methods 0.000 claims abstract description 44
- 238000001035 drying Methods 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 27
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 150000003751 zinc Chemical class 0.000 claims abstract description 13
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 230000009977 dual effect Effects 0.000 claims abstract description 9
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims abstract description 7
- 230000001070 adhesive effect Effects 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 239000001509 sodium citrate Substances 0.000 claims description 9
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 9
- 230000000845 anti-microbial effect Effects 0.000 claims description 3
- 230000005180 public health Effects 0.000 claims description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 2
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 2
- 239000008103 glucose Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 239000012279 sodium borohydride Substances 0.000 claims description 2
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 20
- MFLKDEMTKSVIBK-UHFFFAOYSA-N zinc;2-methylimidazol-3-ide Chemical group [Zn+2].CC1=NC=C[N-]1.CC1=NC=C[N-]1 MFLKDEMTKSVIBK-UHFFFAOYSA-N 0.000 abstract description 19
- 239000004332 silver Substances 0.000 abstract description 11
- 229910052709 silver Inorganic materials 0.000 abstract description 11
- -1 silver ions Chemical class 0.000 abstract description 8
- 238000005406 washing Methods 0.000 abstract description 8
- 238000011065 in-situ storage Methods 0.000 abstract description 7
- 239000006185 dispersion Substances 0.000 abstract description 3
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 11
- 239000002202 Polyethylene glycol Substances 0.000 description 9
- 229920001223 polyethylene glycol Polymers 0.000 description 9
- 229910001961 silver nitrate Inorganic materials 0.000 description 8
- XIOUDVJTOYVRTB-UHFFFAOYSA-N 1-(1-adamantyl)-3-aminothiourea Chemical compound C1C(C2)CC3CC2CC1(NC(=S)NN)C3 XIOUDVJTOYVRTB-UHFFFAOYSA-N 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 7
- 238000009832 plasma treatment Methods 0.000 description 7
- 230000001954 sterilising effect Effects 0.000 description 6
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 239000013154 zeolitic imidazolate framework-8 Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000588724 Escherichia coli Species 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 2
- JVTMLBYYQYMFLV-UHFFFAOYSA-N 2-methyl-1h-imidazole;zinc Chemical compound [Zn].CC1=NC=CN1 JVTMLBYYQYMFLV-UHFFFAOYSA-N 0.000 description 1
- 229920006052 Chinlon® Polymers 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- ZOIORXHNWRGPMV-UHFFFAOYSA-N acetic acid;zinc Chemical compound [Zn].CC(O)=O.CC(O)=O ZOIORXHNWRGPMV-UHFFFAOYSA-N 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- YPNVIBVEFVRZPJ-UHFFFAOYSA-L silver sulfate Chemical compound [Ag+].[Ag+].[O-]S([O-])(=O)=O YPNVIBVEFVRZPJ-UHFFFAOYSA-L 0.000 description 1
- 229910000367 silver sulfate Inorganic materials 0.000 description 1
- 229910052665 sodalite Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000004246 zinc acetate Substances 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
Classifications
-
- 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
-
- 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
- D06M15/19—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
-
- 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
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
-
- 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
- D06M2101/16—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
-
- 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
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
-
- 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
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to a preparation method of double antibacterial non-woven fabrics, which comprises the following steps: soaking non-woven fabric in solution containing zinc salt, and drying; then soaking in a solution containing silver salt, 2-methylimidazole and an adhesive, and drying; then soaking in solution containing reducing agent, and drying. According to the invention, the ZIF-8 structure is loaded on the non-woven fabric through an in-situ growth method, meanwhile, silver ions are introduced into the ZIF-8 structure, and then the silver ions are reduced into nano silver, so that the non-woven fabric with dual antibacterial performance is obtained. According to the invention, the method for preparing the antibacterial non-woven fabric by in-situ growth is adopted, so that the dispersion uniformity and the adhesive force of the ZIF-8 structure on the non-woven fabric can be ensured, the problem that nano silver is easy to agglomerate due to the fact that nano silver is introduced on the non-woven fabric by the traditional method is avoided due to the fact that nano silver is loaded on the ZIF-8 structure, and the obtained antibacterial non-woven fabric is excellent in antibacterial durability and washing resistance.
Description
Technical Field
The invention relates to the field of composite materials, in particular to a dual antibacterial non-woven fabric and a preparation method thereof.
Background
The non-woven fabric is also called non-woven fabric and is composed of oriented or random fibers, and is a new generation of environment-friendly material which has the characteristics of moisture resistance, ventilation, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity and no irritation, rich colors, low price, recycling and the like. At present, the demands of the medical and public health fields on non-woven fabrics are gradually increased, and high requirements on antibacterial property are provided. However, the conventional antibacterial nonwoven fabric has a disadvantage in terms of antibacterial properties. Especially in the case of recycling, the conventional nonwoven fabric is more difficult to achieve the effects of durable washing fastness and antibacterial property.
Disclosure of Invention
The first aim of the invention is to overcome the defects of the prior art and provide a preparation method of double antibacterial non-woven fabrics.
Specifically, the preparation method provided by the invention comprises the following steps:
(1) Soaking non-woven fabric in solution containing zinc salt, and drying;
(2) Soaking the non-woven fabric treated in the step (1) in a solution containing silver salt, 2-methylimidazole and an adhesive, and drying;
(3) And (3) soaking the non-woven fabric treated in the step (2) in a solution containing a reducing agent, and drying.
According to the invention, a ZIF-8 (sodalite type methyl imidazole zinc, SOD- [ Zn (mim) 2 ], zinc 2-methylimidazolate,2-methylimidazole zinc salt, code MAF-4, also called ZIF-8) structure is loaded on a non-woven fabric through an in-situ growth method, and meanwhile, silver ions are introduced into the ZIF-8 structure, and then the silver ions are reduced into nano silver. Firstly, ZIF-8 with excellent photocatalytic antibacterial performance and nano silver are introduced into non-woven fabric, so that the non-woven fabric with double antibacterial performance is obtained; secondly, the method for preparing the antibacterial non-woven fabric through in-situ growth can ensure the dispersion uniformity and the adhesive force of the ZIF-8 structure on the non-woven fabric; the nano silver is loaded on the ZIF-8 structure, so that the problem that the nano silver is easy to agglomerate when the nano silver is introduced into the non-woven fabric by the traditional method is solved; the antibacterial nonwoven fabric obtained by the method has excellent antibacterial durability and washing fastness. According to the invention, by limiting the specific soaking liquid composition and the soaking step sequence in each step, the nano silver in the final product can be ensured to be loaded on the ZIF-8 structure, and the ZIF-8 structure loaded with the nano silver is uniformly dispersed on the surface of the non-woven fabric.
The zinc salt of the present invention may be selected from at least one of zinc nitrate, zinc acetate or zinc sulfate.
The silver salt according to the present invention may be selected from at least one of silver nitrate or silver sulfate.
The soaking is carried out at normal temperature.
As a preferable mode of the invention, the molar ratio of the zinc salt to the silver salt is (1-3): (0.1 to 0.3), more preferably 1: (0.1-0.2). The main raw materials of the antibacterial agent with the sterilization function are limited in a specific proportion range, so that the two sterilization components in the final product can be ensured to cooperatively play a sterilization function in the specific proportion.
As a specific embodiment of the invention, the solution in the step (1) contains zinc salt with the concentration of 0.25-0.75 mmol/mL; the solution in the step (2) contains silver salt with the concentration of 0.015-0.05 mmol/mL.
As a preferred embodiment of the present invention, the ratio of the number of moles of the zinc salt to the number of moles of the 2-methylimidazole is (1 to 3): (6 to 12), more preferably 1: (6-7). The raw materials are limited in a specific proportion range, so that the ZIF-8 structure can be ensured to effectively grow in situ and be uniformly distributed on the surface of the non-woven fabric.
As a specific embodiment of the invention, the solution in the step (1) contains zinc salt with the concentration of 0.25-0.75 mmol/mL; the solution in the step (2) contains 2-methylimidazole with the concentration of 1-3 mmol/mL.
As a preferable scheme of the invention, the soaking in the step (1) and/or the step (2) is soaking for 4-10 hours. As a specific embodiment, the soaking time of the step (1) can be 4-8 hours, and the soaking time of the step (2) can be 6-10 hours. The soaking time is limited to the above range, so that the sterilizing component can be ensured to be sufficiently deposited on the surface of the nonwoven fabric and to be sufficiently grown in situ.
As a preferred embodiment of the present invention, the binder is at least one selected from PEG (polyethylene glycol), PVA (polyvinyl alcohol), and PVP (polyvinylpyrrolidone). The concentration of the binder in the solution of step (2) is further preferably 0.01 to 0.1g/mL, more preferably 0.03 to 0.07g/mL.
The invention aims at reducing silver ions into silver simple substance by using a reducing agent, and forming nano silver uniformly loaded on a ZIF-8 structure on the surface of a non-woven fabric, thereby realizing excellent sterilization effect.
In the preferred embodiment of the present invention, in the step (3), the nonwoven fabric may be washed with clean water, and the remaining components may be washed off, dried, and then reduced by being placed in a solution containing a reducing agent.
As a preferable scheme of the invention, the reducing agent in the step (3) is selected from reducing agents capable of reducing silver ions (Ag +) into silver simple substances. Specifically, at least one of sodium citrate, glucose or sodium borohydride can be selected.
The soaking time in the step (3) is enough to fully carry out the reaction of reducing silver ions into silver simple substance. As a specific embodiment, the soaking time in the step (3) can be 4-8 hours.
As a preferred embodiment of the present invention, the drying involved in each step of the present invention is specifically: drying at 60-120 deg.c for 10-30 min. As a specific embodiment, the drying temperature after the treatment in the step (1) may be 60 to 100 ℃, the drying temperature after the treatment in the step (2) may be 80 to 120 ℃, and the drying temperature after the treatment in the step (3) may be 60 to 100 ℃. The drying temperature after washing with clear water can be 60-100 ℃. The drying temperature and time are limited to the above ranges, and it is possible to ensure that the sterilizing component on the nonwoven fabric surface is not affected while allowing the moisture to evaporate sufficiently.
As a preferable scheme of the invention, the non-woven fabric raw material adopted by the invention is selected from one of PP non-woven fabric, terylene non-woven fabric and chinlon non-woven fabric. The nonwoven fabric may be corona or plasma treated prior to treatment to facilitate better adhesion of the antimicrobial component to the surface. The preferred non-woven fabric of the invention has the gram weight of 20-50 g/m 2 and the thickness of 0.04-0.1 mm, and is more convenient to use. The size of the nonwoven fabric is not particularly limited, and may be any size that can be completely immersed in the solution.
The second object of the present invention is to provide a dual antibacterial nonwoven fabric prepared by the method.
A third object of the present invention is to provide the use of the dual antimicrobial nonwoven in the medical or public health field.
The double antibacterial non-woven fabric provided by the invention has excellent double antibacterial effects, including nano silver antibacterial effect and ZIF-8 photocatalytic antibacterial performance. According to the invention, the ZIF-8 structure loaded with nano silver is introduced into the non-woven fabric through an in-situ growth method, so that not only are the dispersion uniformity and adhesive force of the ZIF-8 on the non-woven fabric improved, but also the problem that the nano silver is directly loaded on the non-woven fabric and is easy to agglomerate is solved, and the obtained antibacterial non-woven fabric has excellent washability and antibacterial durability. The ZIF-8 structure in the non-woven fabric has high porosity, and can ensure good air permeability of the non-woven fabric. The whole process of the multi-antibacterial non-woven fabric prepared by the invention uses water as a solvent, and the preparation process is environment-friendly.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Example 1
The embodiment provides a double antibacterial non-woven fabric, which is prepared by the following method:
5.95g (0.02 mol) of zinc nitrate hexahydrate was dissolved in 40mL of water to obtain solution A; 0.34g (0.002 mol) of silver nitrate, 9.85g (0.12 mol) of 2-methylimidazole, 4g of PEG were dissolved in 60mL of water to obtain a solution B; soaking the PP non-woven fabric subjected to plasma treatment in the solution A at normal temperature for 8 hours, taking out and drying for 20 minutes at 100 ℃; then soaking in the solution B at normal temperature for 10h, taking out, treating at 120 ℃ for 30min, cleaning the non-woven fabric with clear water, and drying at 80 ℃ for 20min; soaking the treated non-woven fabric in a sodium citrate water solution with the concentration of 0.1mol/L for 8 hours, and drying at 100 ℃ for 20 minutes; to obtain the antibacterial non-woven fabric.
Example 2
The embodiment provides a double antibacterial non-woven fabric, which is prepared by the following method:
5.95g (0.02 mol) of zinc nitrate hexahydrate was dissolved in 40mL of water to obtain solution A; 0.34g (0.002 mol) of silver nitrate, 9.85g (0.12 mol) of 2-methylimidazole, 4g of PEG were dissolved in 60mL of water to obtain a solution B; soaking the PP non-woven fabric subjected to plasma treatment in the solution A at normal temperature for 4 hours, taking out and drying for 20 minutes at 100 ℃; then soaking in the solution B at normal temperature for 6h, taking out, treating at 120 ℃ for 30min, cleaning the non-woven fabric with clear water, and drying at 80 ℃ for 20min; soaking the treated non-woven fabric in a sodium citrate water solution with the concentration of 0.1mol/L for 6 hours, and drying at 100 ℃ for 20 minutes; to obtain the antibacterial non-woven fabric.
Example 3
The embodiment provides a double antibacterial non-woven fabric, which is prepared by the following method:
8.92g (0.03 mol) of zinc nitrate hexahydrate was dissolved in 40mL of water to obtain solution A; 0.51g (0.003 mol) of silver nitrate, 14.78g (0.18 mol) of 2-methylimidazole and 4g of PEG were dissolved in 60mL of water to obtain a solution B; soaking the PP non-woven fabric subjected to plasma treatment in the solution A at normal temperature for 4 hours, taking out and drying for 20 minutes at 100 ℃; then soaking in the solution B at normal temperature for 6h, taking out, treating at 120 ℃ for 30min, cleaning the non-woven fabric with clear water, and drying at 80 ℃ for 20min; soaking the treated non-woven fabric in a sodium citrate water solution with the concentration of 0.1mol/L for 6 hours, and drying at 100 ℃ for 20 minutes; to obtain the antibacterial non-woven fabric.
Example 4
The embodiment provides a double antibacterial non-woven fabric, which is prepared by the following method:
2.97g (0.01 mol) of zinc nitrate hexahydrate was dissolved in 40mL of water to obtain solution A; 0.17g (0.001 mol) of silver nitrate, 4.93g (0.06 mol) of 2-methylimidazole, 2g of PEG were dissolved in 60mL of water to obtain a solution B; soaking the PP non-woven fabric subjected to plasma treatment in the solution A at normal temperature for 6 hours, taking out and drying for 20 minutes at 100 ℃; then soaking in the solution B at normal temperature for 8h, taking out, treating at 120 ℃ for 30min, cleaning the non-woven fabric with clear water, and drying at 80 ℃ for 20min; soaking the treated non-woven fabric in a sodium citrate water solution with the concentration of 0.1mol/L for 6 hours, and drying at 100 ℃ for 20 minutes; to obtain the antibacterial non-woven fabric.
Comparative example 1
The comparative example provides a dual antibacterial nonwoven fabric, which is prepared by the following method:
5.95g (0.02 mol) of zinc nitrate hexahydrate was dissolved in 40mL of water to obtain solution A; 0.34g (0.002 mol) of silver nitrate, 9.85g (0.12 mol) of 2-methylimidazole, 4g of PEG were dissolved in 60mL of water to obtain a solution B; uniformly mixing the solution A and the solution B to obtain a solution C, soaking the PP non-woven fabric subjected to plasma treatment in the solution C at normal temperature for 10 hours, taking out and drying at 120 ℃ for 30 minutes, cleaning the non-woven fabric by using clean water, and drying at 80 ℃ for 20 minutes; soaking the treated non-woven fabric in a sodium citrate water solution with the concentration of 0.1mol/L for 8 hours, and drying at 100 ℃ for 20 minutes; to obtain the antibacterial non-woven fabric.
Comparative example 2
The comparative example provides a dual antibacterial nonwoven fabric, which is prepared by the following method:
0.34g (0.002 mol) of silver nitrate was dissolved in 40mL of water to obtain solution A; 5.95g (0.02 mol) of zinc nitrate hexahydrate, 9.85g (0.12 mol) of 2-methylimidazole, 4g of PEG were dissolved in 60mL of water to obtain a solution B; soaking the PP non-woven fabric subjected to plasma treatment in a solution B at normal temperature for 10 hours, taking out and drying at 120 ℃ for 30 minutes, then soaking in a solution A at normal temperature for 8 hours, taking out and drying at 100 ℃ for 20 minutes; cleaning the non-woven fabric with clear water, and drying at 80 ℃ for 20min; soaking the treated non-woven fabric in a sodium citrate water solution with the concentration of 0.1mol/L for 8 hours, and drying at 100 ℃ for 20 minutes; to obtain the antibacterial non-woven fabric.
Comparative example 3
The comparative example provides a dual antibacterial nonwoven fabric, which is prepared by the following method:
5.95g (0.02 mol) of zinc nitrate hexahydrate and 0.34g (0.002 mol) of silver nitrate were dissolved in 40mL of water to obtain a solution A; 9.85g (0.12 mol) of 2-methylimidazole and 4g of PEG were dissolved in 60mL of water to obtain a solution B; soaking the PP non-woven fabric subjected to plasma treatment in the solution A at normal temperature for 8 hours, taking out and drying for 20 minutes at 100 ℃; then soaking in the solution B at normal temperature for 10h, taking out, treating at 120 ℃ for 30min, cleaning the non-woven fabric with clear water, and drying at 80 ℃ for 20min; soaking the treated non-woven fabric in a sodium citrate water solution with the concentration of 0.1mol/L for 8 hours, and drying at 100 ℃ for 20 minutes; to obtain the antibacterial non-woven fabric.
The antibacterial performance of the antibacterial nonwoven fabrics obtained in each group of examples and comparative examples was tested according to GB/T20944-2007 standard, and the experimental strains were Escherichia coli and Staphylococcus aureus. The antibacterial nonwoven fabric was then washed 100 times, and its antibacterial efficiency was again tested, and the test results are shown in table 1:
Table 1: results of antibacterial Rate
As can be seen from Table 1, the antibacterial nonwoven fabric prepared by the invention has excellent antibacterial performance on escherichia coli and staphylococcus aureus, has better washing fastness, and still has good antibacterial effect after 100 times of washing.
In comparison, the methods provided in comparative examples 1 to 3 are different from the soaking sequence of the present invention (comparative example 1 is A, B solutions mixed and then soaked at the same time, comparative example 2 is a solution B soaked before a solution A soaked, and comparative example 3 is a solution A soaked before silver is added into the solution A), and the obtained nonwoven fabric products are significantly lower than the present invention in both the initial antibacterial rate and the antibacterial rate after washing 100 times. Therefore, the preparation method provided by the invention can ensure that the ZIF-8 structure loaded with nano silver is attached to the surface of the non-woven fabric with optimal dispersibility, uniformity and adhesiveness, and ensure that the non-woven fabric has excellent antibacterial effect and washing-resistant antibacterial effect.
While the invention has been described in detail in the foregoing general description, embodiments and experiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (16)
1. The preparation method of the double antibacterial non-woven fabric is characterized by comprising the following steps of:
(1) Soaking non-woven fabric in solution containing zinc salt, and drying;
(2) Soaking the non-woven fabric treated in the step (1) in a solution containing silver salt, 2-methylimidazole and an adhesive, and drying;
(3) And (3) soaking the non-woven fabric treated in the step (2) in a solution containing a reducing agent, and drying.
2. The preparation method according to claim 1, wherein the molar ratio of zinc salt to silver salt is (1-3): (0.1-0.3).
3. The preparation method according to claim 1, wherein the molar ratio of zinc salt to silver salt is 1: (0.1-0.2).
4. The preparation method according to claim 1, wherein the solution in the step (1) contains zinc salt with a concentration of 0.25-0.75 mmol/mL; the solution in the step (2) contains silver salt with the concentration of 0.015-0.05 mmol/mL.
5. The preparation method according to claim 1, wherein the ratio of the number of moles of zinc salt to the number of moles of 2-methylimidazole is (1 to 3): (6-12).
6. The preparation method according to claim 1, wherein the ratio of the number of moles of zinc salt to the number of moles of 2-methylimidazole is 1: (6-7).
7. The process according to claim 1, wherein the solution obtained in the step (2) contains 2-methylimidazole at a concentration of 1 to 3 mmol/mL.
8. The method according to any one of claims 1 to 7, wherein the soaking in step (1), step (2) and/or step (3) is performed for 4 to 10 hours.
9. The method according to any one of claims 1 to 7, wherein the soaking time in step (1) is 4 to 8 hours, the soaking time in step (2) is 6 to 10 hours, and the soaking time in step (3) is 4 to 8 hours.
10. The method according to any one of claims 1 to 7, wherein the adhesive is at least one selected from PEG, PVA, PVP;
and/or the reducing agent is selected from at least one of sodium citrate, glucose or sodium borohydride.
11. The method according to claim 1, wherein in the step (3), the nonwoven fabric is washed with clean water, dried, and then placed in a solution containing a reducing agent.
12. The method of preparation according to claim 1 or 11, wherein the drying is: drying at 60-120 deg.c for 10-30 min.
13. The method of claim 1, wherein the nonwoven fabric is corona or plasma treated prior to step (1).
14. The method according to claim 1, wherein the nonwoven fabric has a gram weight of 20-50g/m 2 and a thickness of 0.04-0.1 mm.
15. The dual antibacterial nonwoven fabric prepared by the method of any one of claims 1 to 14.
16. Use of the dual antimicrobial nonwoven fabric of claim 15 in the medical or public health field.
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| CN115739183A (en) * | 2022-11-18 | 2023-03-07 | 武汉纺织大学 | Fabric-based Ag/ZIF-8 functional material and preparation method and application thereof |
| CN115814141A (en) * | 2022-12-12 | 2023-03-21 | 广东省人民医院 | A kind of medical dressing with antibacterial and anti-adhesion functions and preparation method thereof |
| CN118559828A (en) * | 2024-05-16 | 2024-08-30 | 南京林业大学 | Natural mildew inhibitor packaging particles and preparation method and application thereof |
| CN119177564A (en) * | 2024-09-30 | 2024-12-24 | 天津工业大学绍兴柯桥研究院 | Preparation method of metal-organic framework antibacterial non-woven material |
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| CN110777537B (en) * | 2019-11-04 | 2021-01-05 | 北京理工大学 | A kind of ZIF-8/non-woven composite material and preparation method thereof |
| CN111109293A (en) * | 2019-12-27 | 2020-05-08 | 上海纳米技术及应用国家工程研究中心有限公司 | Preparation method of silver-metal organic framework composite antibacterial material |
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