CN110629552A - Dopamine applied to antibacterial fabric and method for preparing antibacterial fabric - Google Patents
Dopamine applied to antibacterial fabric and method for preparing antibacterial fabric Download PDFInfo
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- CN110629552A CN110629552A CN201910939550.2A CN201910939550A CN110629552A CN 110629552 A CN110629552 A CN 110629552A CN 201910939550 A CN201910939550 A CN 201910939550A CN 110629552 A CN110629552 A CN 110629552A
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- fabric
- dopamine
- trimethylolpropane
- buffer solution
- functional
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- 239000004744 fabric Substances 0.000 title claims abstract description 119
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 229960003638 dopamine Drugs 0.000 title claims abstract description 55
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 18
- 239000007853 buffer solution Substances 0.000 claims abstract description 36
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 9
- CTENFNNZBMHDDG-UHFFFAOYSA-N Dopamine hydrochloride Chemical compound Cl.NCCC1=CC=C(O)C(O)=C1 CTENFNNZBMHDDG-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229960001149 dopamine hydrochloride Drugs 0.000 claims abstract description 5
- 230000000845 anti-microbial effect Effects 0.000 claims abstract 8
- 238000004519 manufacturing process Methods 0.000 claims abstract 6
- 229920000742 Cotton Polymers 0.000 claims description 39
- 238000005406 washing Methods 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 15
- 238000013329 compounding Methods 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 13
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 12
- 239000000806 elastomer Substances 0.000 claims description 12
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 7
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- 229920000433 Lyocell Polymers 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- SFRDXVJWXWOTEW-UHFFFAOYSA-N 2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)CO SFRDXVJWXWOTEW-UHFFFAOYSA-N 0.000 claims description 4
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000004599 antimicrobial Substances 0.000 claims 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 5
- 239000003086 colorant Substances 0.000 description 4
- 238000004040 coloring Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 2
- 229920001690 polydopamine Polymers 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- 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
- D06M11/51—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
- D06M11/55—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 sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
- D06M11/56—Sulfates or thiosulfates other than of elements of Groups 3 or 13 of the Periodic Table
-
- 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
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
- D06M23/16—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/06—Vegetal fibres
- B32B2262/062—Cellulose fibres, e.g. cotton
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
- B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to the technical field of dopamine fabric application, and discloses dopamine applied to an antibacterial fabric, wherein trimethylolpropane and water are added to prepare a 10 mM-concentration pH buffer solution of the trimethylolpropane; adding dopamine hydrochloride powder into the treated trimethylolpropane pH buffer solution to prepare dopamine-trimethylolpropane buffer solution with the concentration of 0.02-0.1M, and adjusting the pH value to 8.5 by using dilute hydrochloric acid for later use; adding a silane coupling agent KH-550 into the dopamine-trimethylolpropane buffer solution, and adjusting the pH value to 8.5 by using dilute hydrochloric acid to prepare the dopamine applied to the antibacterial fabric. Also provided is a method of making the antimicrobial fabric. The fabric has the advantages of firmer dopamine adhesion on the surface of the fabric and better fabric color forming effect.
Description
Technical Field
The invention relates to the technical field of dopamine fabric application, in particular to dopamine applied to an antibacterial fabric and a method for preparing the antibacterial fabric.
Background
With the enhancement of awareness of environmental protection and the increasing demand for functional textiles, the research on the environmental-friendly functional finishing method of textiles becomes a hotspot. Dopamine is a biomass molecule with high reactivity and high adhesiveness, so that the dopamine is widely researched since the dopamine is found, and the dopamine is more and more widely applied to the textile field; in the use process of the existing dopamine, the surface of an antibacterial fabric is not uniformly coated, the dopamine layer structure is not firm enough, the dopamine layer is easy to fall off after being washed by water for many times, and the color forming effect of the fabric is not diverse enough.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides dopamine applied to an antibacterial fabric and a method for preparing the antibacterial fabric, which have the advantages of firm adhesion of dopamine on the surface of the fabric and better fabric color forming effect, and solve the problems of easy detachment of a dopamine layer structure, short service life and great influence on the fabric color of the dopamine fabric.
(II) technical scheme
In order to realize the purposes of firmer adhesion of dopamine on the surface of the fabric, better antibacterial effect and better color forming effect of the fabric, the invention provides the following technical scheme: dopamine applied to an antibacterial fabric is prepared by the following steps:
a. adding water into the trimethylolmethane to prepare a 10mM trimethylolpropane pH buffer solution;
b. adding dopamine hydrochloride powder into the treated trimethylolpropane pH buffer solution to prepare dopamine-trimethylolpropane buffer solution with the concentration of 0.02-0.1M, and adjusting the pH value to 8.5 by using dilute hydrochloric acid for later use;
c. adding a silane coupling agent KH-550 into the dopamine-trimethylolpropane buffer solution, and adjusting the pH value to 8.5 by using dilute hydrochloric acid to prepare the dopamine applied to the antibacterial fabric.
Preferably, the dopamine-trimethylolmethane buffer solution in the step b is prepared at a concentration of 0.02-0.03M, and the dopamine-trimethylolmethane buffer solution is black.
Preferably, the mass fraction of the silane coupling agent KH-550 added in the step c is kept the same as the mass fraction of the hydrochloride powder added in the step b.
A method for preparing antibacterial fabric, which is prepared by adopting the prepared dopamine applied to the antibacterial fabric, comprises the following steps:
a. heating and washing cotton fiber with anhydrous ether for 3-5 times, filtering, washing with water, and drying to obtain pretreated cotton fiber;
b. completely covering the dopamine liquid applied to the antibacterial fabric on the surface of the cotton fabric, placing the cotton fabric into a sterile vacuum box, and controlling the ambient temperature to be 30 ℃;
c. after the time is long between 1 and 4 hours, absorbing and removing dopamine liquid around the cotton fabric, and continuously placing the cotton fabric in a vacuum drying box for drying;
d. drying for 60min, taking out the cotton fiber, and washing with water to obtain the impregnated cotton fiber;
e. soaking the soaked cotton fiber in a copper sulfate solution with the mass fraction of 0.2%, performing oscillation reaction for 12-15h at the temperature of 30-35 ℃, taking out the cotton fiber, and then washing and drying the cotton fiber to obtain functional fiber;
f. taking 3-5 functional fibers for stranding, taking 3-5 tencel strands for stranding, interweaving and forming according to a weft plain stitch structure according to the interweaving proportion of 50/50, and baking to obtain the functional fabric;
g. compounding the functional fabric and the thermoplastic polyurethane elastomer, wherein the inner layer and the outer layer are the functional fabric, the middle layer is the thermoplastic polyurethane elastomer structure, and performing hot melt compounding at 140-150 ℃ and under the compound pressure of 1-2MPa for 2-3min to obtain the multifunctional composite fabric, thus completing the preparation.
Preferably, the concentration of the anhydrous ether in the step a is 3.6M, and the washing temperature is 30 ℃.
Preferably, after 2 hours of time in the step c, the dopamine liquid around the cotton fabric is sucked and removed, and the cotton fabric is continuously placed in a vacuum drying box for drying.
Preferably, in the step g, the functional fabric is compounded with the thermoplastic polyurethane elastomer, the inner layer and the outer layer are the functional fabric, the middle layer is the thermoplastic polyurethane elastomer structure, and the hot melting compounding is carried out for 3min at 140 ℃ under the compounding pressure of 2MPa, so that the multifunctional composite fabric is obtained.
Preferably, the baking treatment in the step f is to pre-bake the fabric at 125 ℃ for 35s and then bake the fabric at 105 ℃ for 35s for shaping.
Preferably, in the step f, 5 functional fibers are selected and plied, 5 tencel yarns are plied, and the functional fabric is formed by interweaving according to the weft plain stitch structure according to the interweaving proportion of 50/50 and is baked.
(III) advantageous effects
Compared with the prior art, the invention provides dopamine applied to an antibacterial fabric and a method for preparing the antibacterial fabric, and the dopamine has the following beneficial effects:
1. according to the dopamine applied to the antibacterial fabric and the method for preparing the antibacterial fabric, in the process that dopamine is in contact with a fiber fabric, due to the fact that a dopamine-shaped poly-dopamine structure in a dopamine-trimethylolmethane buffer solution is combined with the surface of a limiting fabric to form a special double-layer structure, the upper layer is a compact continuous film structure, and the lower layer is a particle structure with an even size, so that the dopamine is uniformly and firmly adhered to the surface of the fiber fabric, is not prone to falling off due to subsequent washing or repeated use, and is longer in duration.
2. The dopamine applied to the antibacterial fabric and the method for preparing the antibacterial fabric are characterized in that different structural colors can be generated by the dopamine after the dopamine is soaked in the fabric according to the concentration of a dopamine-trimethylolpropane buffer solution in the dopamine applied to the antibacterial fabric so as to be matched with the coloring treatment of the fabric, and the color is gradually darkened from light brown to gray according to the concentration of the dopamine-trimethylolpropane buffer solution of 0.02-0.1M, so that different structural colors can be presented so as to be matched with the fabric for coloring treatment.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Dopamine applied to an antibacterial fabric is prepared by the following steps:
a. adding water into the trimethylolmethane to prepare a 10mM trimethylolpropane pH buffer solution;
b. adding dopamine hydrochloride powder into the treated trimethylolpropane pH buffer solution to prepare dopamine-trimethylolpropane buffer solution, and adjusting the pH value of the dopamine-trimethylolpropane buffer solution to 8.5 by using dilute hydrochloric acid for later use;
c. adding a silane coupling agent KH-550 into the dopamine-trimethylolpropane buffer solution, and adjusting the pH value to 8.5 by using dilute hydrochloric acid to prepare the dopamine applied to the antibacterial fabric.
The preparation concentration of the dopamine-trimethylolpropane buffer solution in the step b is 0.02M, and the dopamine-trimethylolpropane buffer solution is black.
The mass fraction of the silane coupling agent KH-550 added in step c is kept the same as the mass fraction of the hydrochloride powder added in step b.
Example 2
Dopamine applied to an antibacterial fabric is prepared by the following steps:
a. adding water into the trimethylolmethane to prepare a 10mM trimethylolpropane pH buffer solution;
b. adding dopamine hydrochloride powder into the treated trimethylolpropane pH buffer solution to prepare dopamine-trimethylolpropane buffer solution, and adjusting the pH value of the dopamine-trimethylolpropane buffer solution to 8.5 by using dilute hydrochloric acid for later use;
c. adding a silane coupling agent KH-550 into the dopamine-trimethylolpropane buffer solution, and adjusting the pH value to 8.5 by using dilute hydrochloric acid to prepare the dopamine applied to the antibacterial fabric.
The preparation concentration of the dopamine-trimethylolpropane buffer solution in the step b is 0.03M, and the dopamine-trimethylolpropane buffer solution is black.
The mass fraction of the silane coupling agent KH-550 added in step c is kept the same as the mass fraction of the hydrochloride powder added in step b.
Example 3
A method for preparing an antibacterial fabric using the dopamine prepared in the above example 1 or 2 applied to an antibacterial fabric, comprising the steps of:
a. heating and washing cotton fiber with anhydrous ether for 3-5 times, filtering, washing with water, and drying to obtain pretreated cotton fiber;
b. completely covering the dopamine liquid applied to the antibacterial fabric on the surface of the cotton fabric, placing the cotton fabric into a sterile vacuum box, and controlling the ambient temperature to be 30 ℃;
c. after the time is long between 1 and 4 hours, absorbing and removing dopamine liquid around the cotton fabric, and continuously placing the cotton fabric in a vacuum drying box for drying;
d. drying for 60min, taking out the cotton fiber, and washing with water to obtain the impregnated cotton fiber;
e. soaking the soaked cotton fiber in a copper sulfate solution with the mass fraction of 0.2%, performing oscillation reaction for 12-15h at the temperature of 30-35 ℃, taking out the cotton fiber, and then washing and drying the cotton fiber to obtain functional fiber;
f. taking 3-5 functional fibers for stranding, taking 3-5 tencel strands for stranding, interweaving and forming according to a weft plain stitch structure according to the interweaving proportion of 50/50, and baking to obtain the functional fabric;
g. compounding the functional fabric and the thermoplastic polyurethane elastomer, wherein the inner layer and the outer layer are the functional fabric, the middle layer is the thermoplastic polyurethane elastomer structure, and performing hot melt compounding at 140-150 ℃ and under the compound pressure of 1-2MPa for 2-3min to obtain the multifunctional composite fabric, thus completing the preparation.
In the step a, the concentration of the anhydrous ether is 3.6M, the washing temperature is 30 ℃, the washing effect is good, and the washing efficiency is high; after 2 hours, absorbing and removing dopamine liquid around the cotton fabric, and continuously placing the cotton fabric in a vacuum drying box for drying, so that redundant dopamine liquid can be removed in a short time; step g, compounding the functional fabric and the thermoplastic polyurethane elastomer, wherein the inner layer and the outer layer are the functional fabric, the middle layer is of a thermoplastic polyurethane elastomer structure, hot-melting compounding is carried out for 3min at 140 ℃ under the compounding pressure of 2MPa, so that the multifunctional composite fabric is obtained, and the middle layer of the obtained fabric is relatively uniform; the baking treatment in the step f is to pre-bake the fabric for 35s at 125 ℃, and then bake the fabric for 35s at 105 ℃ for shaping, so that the baking efficiency is high and the fabric is not damaged; and f, selecting 5 functional fibers for stranding, then selecting 5 tencel yarns for stranding, interweaving and forming according to the weft plain stitch structure according to the interweaving proportion of 50/50, and baking to obtain the functional fabric with higher fabric strength.
In conclusion, in the process that dopamine is in contact with the fiber fabric, the dopamine-shaped poly-dopamine structure in the dopamine-trimethylolmethane buffer solution is combined with the surface of the limiting fabric to form a special double-layer structure, the upper layer is a compact continuous film structure, and the lower layer is a particle structure with uniform size, so that the dopamine is uniformly and firmly adhered to the surface of the fiber fabric, is not easy to fall off due to subsequent washing or repeated use and is longer; the dopamine applied to the antibacterial fabric can generate different structural colors after being soaked in the fabric according to the concentration of the dopamine-trimethylolpropane buffer solution so as to be matched with the coloring treatment of the fabric, and the color is gradually deepened from light brown to gray according to the concentration of the dopamine-trimethylolpropane buffer solution of 0.02-0.1M, so that different structural colors can be presented so as to be matched with the fabric for coloring treatment.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The dopamine applied to the antibacterial fabric is characterized by being prepared by the following steps:
a. adding water into the trimethylolmethane to prepare a 10mM trimethylolpropane pH buffer solution;
b. adding dopamine hydrochloride powder into the treated trimethylolpropane pH buffer solution to prepare dopamine-trimethylolpropane buffer solution with the concentration of 0.02-0.1M, and adjusting the pH value to 8.5 by using dilute hydrochloric acid for later use;
c. adding a silane coupling agent KH-550 into the dopamine-trimethylolpropane buffer solution, and adjusting the pH value to 8.5 by using dilute hydrochloric acid to prepare the dopamine applied to the antibacterial fabric.
2. The dopamine for use in an antimicrobial fabric according to claim 1, wherein: in the step b, the preparation concentration of the dopamine-trimethylolpropane buffer solution is 0.02-0.03M, and the dopamine-trimethylolpropane buffer solution is black.
3. The dopamine for use in an antimicrobial fabric according to claim 1, wherein: the mass fraction of the silane coupling agent KH-550 added in step c is kept the same as the mass fraction of the hydrochloride powder added in step b.
4. A method for preparing an antibacterial fabric, characterized in that the dopamine prepared in claim 1 applied to the antibacterial fabric is used for preparation, comprising the following steps:
a. heating and washing cotton fiber with anhydrous ether for 3-5 times, filtering, washing with water, and drying to obtain pretreated cotton fiber;
b. completely covering the dopamine liquid applied to the antibacterial fabric on the surface of the cotton fabric, placing the cotton fabric into a sterile vacuum box, and controlling the ambient temperature to be 30 ℃;
c. after the time is long between 1 and 4 hours, absorbing and removing dopamine liquid around the cotton fabric, and continuously placing the cotton fabric in a vacuum drying box for drying;
d. drying for 60min, taking out the cotton fiber, and washing with water to obtain the impregnated cotton fiber;
e. soaking the soaked cotton fiber in a copper sulfate solution with the mass fraction of 0.2%, performing oscillation reaction for 12-15h at the temperature of 30-35 ℃, taking out the cotton fiber, and then washing and drying the cotton fiber to obtain functional fiber;
f. taking 3-5 functional fibers for stranding, taking 3-5 tencel strands for stranding, interweaving and forming according to a weft plain stitch structure according to the interweaving proportion of 50/50, and baking to obtain the functional fabric;
g. compounding the functional fabric and the thermoplastic polyurethane elastomer, wherein the inner layer and the outer layer are the functional fabric, the middle layer is the thermoplastic polyurethane elastomer structure, and performing hot melt compounding at 140-150 ℃ and under the compound pressure of 1-2MPa for 2-3min to obtain the multifunctional composite fabric, thus completing the preparation.
5. The method of making an antimicrobial fabric of claim 4, wherein: in step a, the concentration of the anhydrous ether is 3.6M, and the washing temperature is 30 ℃.
6. The method of making an antimicrobial fabric of claim 4, wherein: and c, after 2 hours, sucking and removing the dopamine liquid around the cotton fabric, and continuously placing the cotton fabric in a vacuum drying box for drying.
7. The method of making an antimicrobial fabric of claim 4, wherein: and step g, compounding the functional fabric and the thermoplastic polyurethane elastomer, wherein the inner layer and the outer layer are the functional fabric, the middle layer is the thermoplastic polyurethane elastomer structure, and hot-melting compounding is carried out for 3min at 140 ℃ under the compounding pressure of 2MPa, so that the multifunctional composite fabric is obtained.
8. The method of making an antimicrobial fabric of claim 4, wherein: and the baking treatment in the step f is to pre-bake the fabric for 35s at 125 ℃, and then bake the fabric for 35s at 105 ℃ for shaping.
9. The method of making an antimicrobial fabric of claim 4, wherein: and f, selecting 5 functional fibers for stranding, then selecting 5 tencel yarns for stranding, interweaving and forming according to the weft plain stitch structure according to the interweaving proportion of 50/50, and baking to obtain the functional fabric.
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