CN110373899A - A kind of washable antibacterial cotton fabric and preparation method thereof - Google Patents
A kind of washable antibacterial cotton fabric and preparation method thereof Download PDFInfo
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- CN110373899A CN110373899A CN201910569127.8A CN201910569127A CN110373899A CN 110373899 A CN110373899 A CN 110373899A CN 201910569127 A CN201910569127 A CN 201910569127A CN 110373899 A CN110373899 A CN 110373899A
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- cotton fabric
- methionine
- aqueous solution
- carboxyl chitosan
- antibacterial
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- 239000004744 fabric Substances 0.000 title claims abstract description 92
- 229920000742 Cotton Polymers 0.000 title claims abstract description 90
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 229920001661 Chitosan Polymers 0.000 claims abstract description 44
- FFEARJCKVFRZRR-BYPYZUCNSA-N L-methionine Chemical compound CSCC[C@H](N)C(O)=O FFEARJCKVFRZRR-BYPYZUCNSA-N 0.000 claims abstract description 42
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 42
- 239000007864 aqueous solution Substances 0.000 claims abstract description 29
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 22
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910000033 sodium borohydride Inorganic materials 0.000 claims abstract description 11
- 239000012279 sodium borohydride Substances 0.000 claims abstract description 11
- 229910001961 silver nitrate Inorganic materials 0.000 claims abstract description 10
- 229910052709 silver Inorganic materials 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000004753 textile Substances 0.000 claims description 3
- 230000004584 weight gain Effects 0.000 claims description 3
- 235000019786 weight gain Nutrition 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims 1
- 229910017604 nitric acid Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 15
- 239000002245 particle Substances 0.000 abstract description 10
- 230000003115 biocidal effect Effects 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 239000012620 biological material Substances 0.000 abstract description 4
- 239000000243 solution Substances 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000005406 washing Methods 0.000 description 10
- 241000588724 Escherichia coli Species 0.000 description 9
- 241000191967 Staphylococcus aureus Species 0.000 description 9
- 239000002994 raw material Substances 0.000 description 8
- 235000013339 cereals Nutrition 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920001282 polysaccharide Polymers 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 230000000536 complexating effect Effects 0.000 description 2
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 229960004452 methionine Drugs 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- FFEARJCKVFRZRR-UHFFFAOYSA-N L-Methionine Natural products CSCCC(N)C(O)=O FFEARJCKVFRZRR-UHFFFAOYSA-N 0.000 description 1
- 229930195722 L-methionine Natural products 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229920002988 biodegradable polymer Polymers 0.000 description 1
- 239000004621 biodegradable polymer Substances 0.000 description 1
- 230000021523 carboxylation Effects 0.000 description 1
- 238000006473 carboxylation reaction Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 229960003638 dopamine Drugs 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- 229920000587 hyperbranched polymer Polymers 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000002147 killing effect Effects 0.000 description 1
- 229930182817 methionine Natural products 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
Classifications
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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
-
- 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
- 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
- D06M13/322—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 nitrogen
- D06M13/325—Amines
- D06M13/342—Amino-carboxylic acids; Betaines; Aminosulfonic acids; Sulfo-betaines
-
- 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
-
- 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
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention belongs to biological material fields, disclose a kind of preparation method with efficient washability antibacterial cotton fabric.The washable antibacterial cotton fabric is constructed by cotton fabric, carboxyl chitosan, l-methionine and nano silver.A kind of washable antibacterial cotton fabric the preparation method comprises the following steps: the first step immerses cotton fabric in carboxyl chitosan and l-methionine mixed aqueous solution, then xeothermic reaction.The cotton fabric for loading carboxyl chitosan and l-methionine is immersed silver nitrate solution by second step, dry, then is immersed and be reduced to nano-Ag particles in sodium borohydride aqueous solution, after being rinsed, being dried, obtains modified cotton fabric.The method of the present invention is simple, environmentally protective, is suitable for industrialized production.Gained cotton fabric antibiotic rate is high, washability is good.
Description
Technical field
The present invention relates to one kind to have high washability antibacterial cotton fabric and preparation method thereof, belongs to biological material field.
Background technique
Cotton fabric is very big by people due to its excellent performance, such as elasticity, snugness of fit, water imbibition, gas permeability
Welcome.In addition, also there are many applications, including waterproof, antibacterial, fire prevention, antiultraviolet in other respects for modified cotton fabric.Especially
Be carry out the modified preparation antibacterial cotton fabric in surface to cotton fabric using Nano silver grain (Ag NPs) there is extensive research, and
It is applied in industrial production.
Since Ag NPs has high-specific surface area, there is high inhibiting effect to the activity of most of pathogen, and at
This is lower, so Ag NPs is an important antibacterial agent.But, nearest some studies have shown that Nano silver grain have it is strong
Health risk and environmental problem (Water Air and Soil Pollution, 2016,227,306).The toxicity of Nano silver grain
Mainly as caused by the spilling of Ag NPs (Food and Chemical Toxicology, 2015,77,58), these problems
Significantly limit the application that silver is antibacterial cotton fabric.Therefore, the method for Nano silver grain can be effectively fixed on cotton fabric
New hot spot as functions of textile fabricsization research.In past research, many methods have been suggested and have improved surface of cotton fabric
Nano silver grain Adhesion property (Cellulose, 2016,23,2791).In these methods, polymer adhesive is answered
With being very effective, and it has been widely studied.For example, Hyperbranched Polymer with Terminal Amido (HBP-NH2) (Carbohydrate
Polymers, 2013,92,2088-2094) and dopamine (Applied Surface Science, 2011,257,
6799).
Chitosan is a kind of nontoxic, cheap, biodegradable polymer, can be with silver at matching with a large amount of amino
Position key is to fixed silver nano-grain.However, the chitosan of physical absorption does not form covalent bond, bonding effect with fiber surface
The durability of fruit is unsatisfactory.Chitosan chain is supported on cotton fiber there are many method by chemical reaction, as being crosslinked
Method, plasma technique, fabric oxidation treatment method (Applied Surface Science, 2014,309,138), but
Since expensive reagent and complicated reaction process are not appropriate for industrial production.Carboxylic group and cotton fabric in carboxyl chitosan
Surface hydroxyl occur chemical reaction be fixed in the form of covalent bond surface of cotton fabric (Carbohydrate Polymers,
2019,204,42).
But the result of study of our early periods shows passing through 50 since complexing of the amino for silver atoms is limited
After secondary standard wash, the antibacterial action decline of modified cotton it is obvious (Carbohydrate polymers, 2017,177,
187).Therefore, this patent focuses on to improve modified cotton to the fixed function of nano silver, to further enhance the resistance to of antibacterial cotton cloth
Scourability.
L-methionine is a kind of natural amino acid, can be coordinated with sulphur atom with silver atoms to fixed silver nanoparticle
Particle.There is carboxyl in l-methionine, esterification can occur with the hydroxyl on cotton and be fixed on cotton in a manner of covalent bond
Cloth surface, therefore, l-methionine are also a kind of efficient adhesive (RSC Advances, 2018,8,24458).The present invention
Patent forms compound system fixed nano silver particles simultaneously using carboxyl chitosan and l-methionine, is steady with carboxyl chitosan
Determine agent, it is possible to provide more binding sites increase the grafting amount of l-methionine, while enhancing the complexing to silver atoms, show
Write the washing fastness for improving antibacterial cotton fabric.
But since the cellulosic molecule of cotton surface is in crystalline state mostly, can effectively and l-methionine into
The hydroxy functional group of row reaction is less, therefore the present invention handles cotton fabric using carboxyl chitosan and the mixture of l-methionine
Surface can greatly improve the sulfydryl density of fiber surface, improve the curing efficiency of nano-Ag particles.
In conclusion cotton fabric has flexibility good, good permeability, good water absorption, good biocompatibility and it is cheap easily
The characteristic obtained, using as biomaterial has advantageous advantage.But the not high and antibacterial washability poor two of bacteriostasis rate is big
Disadvantage hinders its further application.By the loading nano silvery particle although good cotton fabric of available antibacterial, still
Since the adsorption capacity of nano silver is weaker, cause the washability of antibiotic fabric poor, and product is dangerous.The present invention provides a set of letter
Easy feasible method improves the washability and safety of antibiotic fabric to improve the adsorption capacity of nano-Ag particles.
Summary of the invention
The technical problem to be solved in the present invention: adsorption capacity of the antibacterial cotton fabric of loading nano silvery particle due to nano silver
Weaker, washability and safety are bad.The present invention provides a set of simple and feasible method, to improve the absorption of nano-Ag particles
Power improves the washability and safety of antibiotic fabric.The present invention passes through the synergistic effect of carboxyl chitosan and l-methionine, mentions
The sulfydryl density of high fabric surface enhances nano-Ag particles in the adsorption strength of fabric surface, prepares washable, safe antibacterial and knit
Object.The method handles surface of cotton fabric with carboxyl chitosan and l-methionine mixture, passes through to increase sulfydryl density, after this
The nano-Ag particles of reduction method preparation increase adsorption capacity by the coordination with sulfydryl, obtain washable, safe antibacterial cotton
Fabric.When wherein carboxyl chitosan molecular weight is 1000 ~ 20000, the effect of the fixed Argent grain in preferable surface can be obtained.Tool
Body technique scheme is as follows:
The present invention the following steps are included:
1) cotton fabric raw material is immersed into 0.5 ~ 2h in 1 ~ 4wt% carboxyl chitosan and l-methionine aqueous solution, control weight gain is 90
~ 110%, 0.01 ~ 0.05h is heated at 180 ~ 200 DEG C later；
2) cotton fabric for loading carboxyl chitosan and l-methionine is immersed into 0.1 ~ 1wt% silver nitrate aqueous solution, 1 ~ 2h, control increases
80 ~ 100% are focused on, later in 100 DEG C of dry 1h；
3) above-mentioned cotton fabric is immersed into 0.05 ~ 0.5wt% sodium borohydride aqueous solution, 1 ~ 2h, later in 100 DEG C of dry 1h；
4) it distills water washing 3 times, 100 DEG C of dry 1h.
Compare with the existing technology, the present invention do not use any organic solvent, and whole process green non-pollution, there is no have
Malicious deleterious molecular residue problem, is very suitable to prepare biomaterial.
The present invention tightly loads carboxyl chitosan, l-methionine and nano silver on cotton fabric, has loaded carboxylation shell
Glycan and the cotton fabric of l-methionine, almost without inhibiting effect, have loaded nanometer to Escherichia coli and staphylococcus aureus
The antibacterial cotton fabric of silver reaches 100% to both bacterium bacteriostasis rates, provides cotton fabric higher anti-microbial property.Carboxyl chitosan
Play the role of an adhesive with l-methionine, not the cotton fabric of adhesive, washs 10 times, antibiotic rate drops to 60%.
The cotton fabric for having loaded adhesive and nano silver, after 200 washings, to Escherichia coli and staphylococcus aureus
Bacteriostasis rate reaches 97%, improves the washability of cotton fabric.
Specific embodiment
Technical solution of the present invention is further explained below in conjunction with specific embodiment.
Embodiment 1
Cotton fabric raw material is immersed 0.5h in 1wt% carboxyl chitosan and l-methionine aqueous solution by the first step, later at 180 DEG C
Lower heating 0.03h is washed, dry.
Antibacterial cotton fabric obtained is constructed by cotton fabric, carboxyl chitosan and l-methionine, carboxyl chitosan point
Son amount is 1500, and l-methionine molecular weight is 149, and gained antibacterial cotton fabric does not have Escherichia coli and staphylococcus aureus
Obvious killing effect.
Embodiment 2
Cotton fabric raw material is immersed 0.5h in 1wt%L- aqueous methionine solution by the first step, heats 0.03h at 180 DEG C later,
The cotton fabric for loading l-methionine is immersed into 2h in 0.2 wt% silver nitrate aqueous solution again, later in 100 DEG C of dry 1h.It will be upper
The cotton fabric stated immerses 1h in 0.2% sodium borohydride aqueous solution, later in 100 DEG C of dry 1h, washs, dry.
Antibacterial cotton fabric obtained is constructed by cotton fabric, nanometer Ag and l-methionine, wherein the partial size of nanometer Ag
For 84nm, l-methionine molecular weight is 149, bacteriostasis rate of the gained antibacterial cotton fabric to Escherichia coli and staphylococcus aureus
Reach 99.9 % or more, and pass through 90 stringent washing cycles, bacteriostasis rate is 97.0% or more.
Embodiment 3
Cotton fabric raw material is immersed 0.5h in 1wt% carboxyl chitosan aqueous solution by the first step, heats 0.03h at 180 DEG C later,
The cotton fabric for loading carboxyl chitosan is immersed into 2h in 0.2 wt% silver nitrate aqueous solution again, later in 100 DEG C of dry 1h.It will be upper
The cotton fabric stated immerses 1h in 0.2% sodium borohydride aqueous solution, later in 100 DEG C of dry 1h, washs, dry.
Antibacterial cotton fabric obtained is constructed by cotton fabric, nanometer Ag and carboxyl chitosan, wherein the partial size of nanometer Ag
For 64nm, carboxyl chitosan molecular weight is 1500, and gained antibacterial cotton fabric is antibacterial to Escherichia coli and staphylococcus aureus
Rate reaches 99.9% or more, and passes through 50 stringent washing cycles, and bacteriostasis rate is 94.0% or more.
Embodiment 4
Cotton fabric raw material is immersed 0.5h in 1wt% carboxyl chitosan and l-methionine aqueous solution by the first step, later at 180 DEG C
Lower heating 0.03h, then the cotton fabric for loading carboxyl chitosan and l-methionine is immersed in 0.2 wt% silver nitrate aqueous solution
2h, later in 100 DEG C of dry 1h.Above-mentioned cotton fabric is immersed into 1h in 0.2% sodium borohydride aqueous solution, later in 100 DEG C of dryings
1h is washed, dry.
Antibacterial cotton fabric obtained is constructed by cotton fabric, nanometer Ag, carboxyl chitosan and l-methionine, wherein receiving
The partial size of rice Ag is 65nm, and carboxyl chitosan molecular weight is 1500, and l-methionine molecular weight is 149, gained antibacterial cotton fabric
99.9% or more is reached to the bacteriostasis rate of Escherichia coli and staphylococcus aureus, and passes through 200 stringent washing cycles,
Bacteriostasis rate is 97.0% or more.
Embodiment 5
Cotton fabric raw material is immersed 1h in 2 wt% carboxyl chitosans and l-methionine aqueous solution by the first step, later at 180 DEG C
0.03h is heated, then the cotton fabric for loading carboxyl chitosan and l-methionine is immersed into 2h in 0.5wt% silver nitrate aqueous solution,
100 DEG C of dry 1h., in 100 DEG C of dry 1h, it will wash, do after 1h in above-mentioned cotton fabric 0.3% sodium borohydride aqueous solution of immersion
It is dry.
Antibacterial cotton fabric obtained is constructed by cotton fabric, nanometer Ag and carboxyl chitosan, wherein the partial size of nanometer Ag
For 70nm, carboxyl chitosan molecular weight is 1500, and l-methionine molecular weight is 149, and gained antibacterial cotton fabric is to Escherichia coli
Reach 99.9% or more with the bacteriostasis rate of staphylococcus aureus, and pass through 200 stringent washing cycles, bacteriostasis rate is
97.0% or more.
Embodiment 6
Cotton fabric raw material is immersed 3wt% carboxyl chitosan and l-methionine aqueous solution 1.5h by the first step, later at 190 DEG C
0.02h is heated, then the cotton fabric for loading carboxyl chitosan and l-methionine is immersed into 2h in 0.8wt% silver nitrate aqueous solution,
100 DEG C of dry 1h.1.5h in above-mentioned cotton fabric 0.4% sodium borohydride aqueous solution of immersion is washed later in 100 DEG C of dry 1h
It washs, it is dry.
Antibacterial cotton fabric obtained is constructed by cotton fabric, nanometer Ag, carboxyl chitosan and l-methionine, wherein receiving
The partial size of rice Ag is 75nm, and carboxyl chitosan molecular weight is 15000, and l-methionine molecular weight is 149, gained antibacterial cotton fabric
99.9% or more is reached to the bacteriostasis rate of Escherichia coli and staphylococcus aureus, and passes through 200 stringent washing cycles,
Bacteriostasis rate is 97.0% or more.
Embodiment 7
Cotton fabric raw material is immersed 2h in 4wt% carboxyl chitosan and l-methionine aqueous solution by the first step, later at 200 DEG C
0.05h is heated, then the cotton fabric for loading carboxyl chitosan and l-methionine is immersed into 2h in 1wt% silver nitrate aqueous solution, is taken out
In 100 DEG C of dry 1h.Above-mentioned cotton fabric is immersed into 2h in 0.5% sodium borohydride aqueous solution, after in 100 DEG C of dry 1h, washing is done
It is dry.
Antibacterial cotton fabric obtained is constructed by cotton fabric, nanometer Ag, carboxyl chitosan and l-methionine, wherein receiving
The partial size of rice Ag is 80nm, and carboxyl chitosan molecular weight is 20000, and l-methionine molecular weight is 149, gained antibacterial cotton fabric
99.9% or more is reached to the bacteriostasis rate of Escherichia coli and staphylococcus aureus, and passes through 200 stringent washing cycles,
Bacteriostasis rate is 97.0% or more.
1 is shown in Table to the summary of above-described embodiment:
Table 1.
Claims (2)
1. a kind of preparation method of washable antibacterial cotton fabric, includes the following steps:
Cotton fabric is padded to obtain xeothermic place after wet cloth by the first step in carboxyl chitosan and l-methionine mixed aqueous solution
Reason, wherein the carboxyl chitosan concentration in carboxyl chitosan and l-methionine mixed aqueous solution is 1 ~ 4wt%, l-methionine
Concentration is 1 ~ 2 wt%, and padding wet cloth weight gain is 90 ~ 110%, and dry heat temperature is 180 ~ 200 DEG C, and heating time is 0.01 ~ 0.05h；
Second step is dried after padding above-mentioned finishing of cotton textiles in silver nitrate aqueous solution, wherein nitric acid in silver nitrate aqueous solution
Silver concentration is 0.1 ~ 1wt%, and infiltrating time is 1 ~ 2h, and padding wet cloth weight gain is 80 ~ 100%, and drying temperature is 100 DEG C, when dry
Between be 1h；
Third step is dried after infiltrating above-mentioned finishing of cotton textiles in sodium borohydride aqueous solution, wherein in sodium borohydride aqueous solution
Sodium borohydride concentration be 0.05 ~ 0.5 wt%, infiltrating time be 1 ~ 2h, drying temperature be 100 DEG C, drying time 1h, finally
Through rinsing drying, the washable antibacterial cotton fabric is made.
2. the preparation method of washability antibacterial cotton fabric as described in claim 1, it is characterised in that: carboxyl chitosan used point
Son amount is 1000 ~ 20000.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111621984A (en) * | 2020-06-16 | 2020-09-04 | 浙江理工大学 | Recyclable antibacterial cotton cloth and preparation method thereof |
| CN112195650A (en) * | 2020-10-28 | 2021-01-08 | 上海威露美生物科技有限公司 | Hydroxyl esterification complex antibacterial fiber, preparation method and application |
| CN112647294A (en) * | 2021-01-13 | 2021-04-13 | 浙江理工大学 | Antibacterial cotton fabric with excellent washing fastness and preparation process thereof |
| CN113445315A (en) * | 2021-06-21 | 2021-09-28 | 浙江理工大学 | Preparation method of diphenolic acid antibacterial cotton fabric |
| CN115162007A (en) * | 2022-08-18 | 2022-10-11 | 江南大学 | Self-crosslinking antibacterial anti-ultraviolet finishing agent for textiles and preparation method thereof |
| CN115852690A (en) * | 2022-12-01 | 2023-03-28 | 安徽工程大学 | Preparation method of high-stability conductive and electromagnetic shielding cotton fabric |
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|---|---|---|---|---|
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| CN111621984A (en) * | 2020-06-16 | 2020-09-04 | 浙江理工大学 | Recyclable antibacterial cotton cloth and preparation method thereof |
| CN111621984B (en) * | 2020-06-16 | 2022-12-20 | 浙江理工大学 | Recyclable antibacterial cotton cloth and preparation method thereof |
| CN112195650A (en) * | 2020-10-28 | 2021-01-08 | 上海威露美生物科技有限公司 | Hydroxyl esterification complex antibacterial fiber, preparation method and application |
| CN112647294A (en) * | 2021-01-13 | 2021-04-13 | 浙江理工大学 | Antibacterial cotton fabric with excellent washing fastness and preparation process thereof |
| CN113445315A (en) * | 2021-06-21 | 2021-09-28 | 浙江理工大学 | Preparation method of diphenolic acid antibacterial cotton fabric |
| CN115162007A (en) * | 2022-08-18 | 2022-10-11 | 江南大学 | Self-crosslinking antibacterial anti-ultraviolet finishing agent for textiles and preparation method thereof |
| CN115162007B (en) * | 2022-08-18 | 2023-10-03 | 江南大学 | Self-crosslinking type antibacterial ultraviolet-proof finishing agent for textiles and preparation method thereof |
| CN115852690A (en) * | 2022-12-01 | 2023-03-28 | 安徽工程大学 | Preparation method of high-stability conductive and electromagnetic shielding cotton fabric |
| CN115852690B (en) * | 2022-12-01 | 2023-08-29 | 安徽工程大学 | Preparation method of high-stability conductive and electromagnetic shielding cotton fabric |
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Effective date of registration: 20231018 Address after: 314400 No.318 Xiachuan Road, Haichang street, Haining City, Jiaxing City, Zhejiang Province Patentee after: Zhejiang Meikan Clothing Co.,Ltd. Address before: 310018 No. 2 street, Xiasha Higher Education Park, Hangzhou, Zhejiang, 928 Patentee before: ZHEJIANG SCI-TECH University |