CN114481632A - Long-acting biological antibacterial washable rayon crepe and preparation method thereof - Google Patents
Long-acting biological antibacterial washable rayon crepe and preparation method thereof Download PDFInfo
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- CN114481632A CN114481632A CN202210188647.6A CN202210188647A CN114481632A CN 114481632 A CN114481632 A CN 114481632A CN 202210188647 A CN202210188647 A CN 202210188647A CN 114481632 A CN114481632 A CN 114481632A
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- Prior art keywords
- fabric
- antibacterial
- crepe
- carvacrol
- parts
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- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 64
- 229920000297 Rayon Polymers 0.000 title claims abstract description 57
- 239000002964 rayon Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000004744 fabric Substances 0.000 claims abstract description 130
- 229920002494 Zein Polymers 0.000 claims abstract description 89
- 239000005019 zein Substances 0.000 claims abstract description 89
- 229940093612 zein Drugs 0.000 claims abstract description 89
- RECUKUPTGUEGMW-UHFFFAOYSA-N carvacrol Chemical compound CC(C)C1=CC=C(C)C(O)=C1 RECUKUPTGUEGMW-UHFFFAOYSA-N 0.000 claims abstract description 76
- 235000007746 carvacrol Nutrition 0.000 claims abstract description 76
- HHTWOMMSBMNRKP-UHFFFAOYSA-N carvacrol Natural products CC(=C)C1=CC=C(C)C(O)=C1 HHTWOMMSBMNRKP-UHFFFAOYSA-N 0.000 claims abstract description 76
- WYXXLXHHWYNKJF-UHFFFAOYSA-N isocarvacrol Natural products CC(C)C1=CC=C(O)C(C)=C1 WYXXLXHHWYNKJF-UHFFFAOYSA-N 0.000 claims abstract description 76
- 229920000858 Cyclodextrin Polymers 0.000 claims abstract description 54
- 239000001116 FEMA 4028 Substances 0.000 claims abstract description 54
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims abstract description 54
- 235000011175 beta-cyclodextrine Nutrition 0.000 claims abstract description 54
- 229960004853 betadex Drugs 0.000 claims abstract description 54
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 37
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 36
- 239000000661 sodium alginate Substances 0.000 claims abstract description 36
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 36
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 28
- 239000004014 plasticizer Substances 0.000 claims abstract description 26
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 20
- 239000000243 solution Substances 0.000 claims description 49
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 45
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 34
- 238000003756 stirring Methods 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000002156 mixing Methods 0.000 claims description 23
- 239000003094 microcapsule Substances 0.000 claims description 21
- 238000001035 drying Methods 0.000 claims description 16
- 239000002202 Polyethylene glycol Substances 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 229920001223 polyethylene glycol Polymers 0.000 claims description 15
- FPQQSJJWHUJYPU-UHFFFAOYSA-N 3-(dimethylamino)propyliminomethylidene-ethylazanium;chloride Chemical compound Cl.CCN=C=NCCCN(C)C FPQQSJJWHUJYPU-UHFFFAOYSA-N 0.000 claims description 14
- 239000003431 cross linking reagent Substances 0.000 claims description 13
- 229910052708 sodium Inorganic materials 0.000 claims description 12
- 239000011734 sodium Substances 0.000 claims description 12
- 238000004043 dyeing Methods 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 10
- 239000007764 o/w emulsion Substances 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 8
- 238000004061 bleaching Methods 0.000 claims description 7
- 238000009835 boiling Methods 0.000 claims description 7
- 238000009990 desizing Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000004513 sizing Methods 0.000 claims description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000009941 weaving Methods 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 235000019441 ethanol Nutrition 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000009999 singeing Methods 0.000 claims description 2
- 238000009987 spinning Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 abstract description 24
- 241000894006 Bacteria Species 0.000 abstract description 6
- 108010055615 Zein Proteins 0.000 description 59
- 230000000052 comparative effect Effects 0.000 description 39
- 230000001954 sterilising effect Effects 0.000 description 26
- 238000004659 sterilization and disinfection Methods 0.000 description 26
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 24
- 230000000694 effects Effects 0.000 description 15
- 229910000029 sodium carbonate Inorganic materials 0.000 description 12
- 239000012153 distilled water Substances 0.000 description 10
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 10
- 229920000053 polysorbate 80 Polymers 0.000 description 10
- 108090000623 proteins and genes Proteins 0.000 description 8
- 102000004169 proteins and genes Human genes 0.000 description 8
- 229910019142 PO4 Inorganic materials 0.000 description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 7
- 239000010452 phosphate Substances 0.000 description 7
- 241000233866 Fungi Species 0.000 description 6
- 230000001476 alcoholic effect Effects 0.000 description 6
- IPCSVZSSVZVIGE-UHFFFAOYSA-N palmitic acid group Chemical group C(CCCCCCCCCCCCCCC)(=O)O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 5
- 239000002131 composite material Substances 0.000 description 4
- 235000021314 Palmitic acid Nutrition 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000005517 mercerization Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000009958 sewing Methods 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 238000000967 suction filtration Methods 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000003760 magnetic stirring Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229920001282 polysaccharide Polymers 0.000 description 2
- 239000005017 polysaccharide Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 241001052560 Thallis Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 229930003658 monoterpene Natural products 0.000 description 1
- -1 monoterpene phenol compound Chemical class 0.000 description 1
- 235000002577 monoterpenes Nutrition 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000037303 wrinkles Effects 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
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
- D06M23/12—Processes in which the treating agent is incorporated in microcapsules
-
- 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
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/144—Alcohols; Metal alcoholates
- D06M13/148—Polyalcohols, e.g. glycerol or glucose
-
- 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
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/152—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen having a hydroxy group bound to a carbon atom of a six-membered aromatic ring
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural macromolecular compounds or derivatives thereof
- D06M15/03—Polysaccharides or derivatives thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- D06M15/13—Alginic acid or derivatives thereof
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/01—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
- D06M15/15—Proteins or derivatives thereof
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- 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
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- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
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Abstract
The application relates to a long-acting biological antibacterial washable crepe made of rayon and a preparation method thereof, wherein the crepe comprises a cloth body and an antibacterial agent, and the antibacterial agent comprises the following components in parts by mass: 4-6 parts of carvacrol, 2-10 parts of beta-cyclodextrin, 74-76 parts of sodium alginate, 86-115 parts of zein, 10-12 parts of an emulsifier and 2-4 parts of a plasticizer. In the application, the carvacrol has an antibacterial effect, so that the antibacterial performance of the fabric can be improved, and the phenomenon that the fabric is corroded by bacteria is reduced; the addition of the plasticizer can improve the mechanical strength of the zein film, and after the fabric is covered by the film, the washing resistance of the fabric is improved.
Description
Technical Field
The application relates to the field of cloth, in particular to long-acting biological antibacterial washable rayon crepe and a preparation method thereof.
Background
The rayon is a fabric made of rayon as a raw material, viscose fiber is usually selected as the raw material, and the viscose fiber has good hygroscopicity; the crepe is a thin plain cotton fabric with uniform wrinkles on the surface in the longitudinal direction, and the rayon crepe is obtained by weaving the rayon and the crepe and has the characteristics of uneven cloth cover, light weight, softness, smoothness, novelty, easy dyeing and the like.
Chinese patent with publication number CN211138407U discloses a high-fastness twisted rayon crepe, which comprises a crepe layer, a memory fabric layer, a reinforcing layer and a base fabric layer, wherein the crepe layer, the memory fabric layer, the reinforcing layer and the base fabric layer are sequentially arranged from top to bottom and are connected with each other, the crepe layer is woven by warp yarns and weft yarns, the warp yarns and the weft yarns are formed by blending rayon and rayon, and an air cushion layer is arranged between the reinforcing layer and the base fabric layer and used for improving the softness and air permeability of the whole fabric. The fabric has good strength and toughness and lasting recovery, so that the service life and the experience effect of the fabric are improved, and the practicability is high.
In view of the above-mentioned related technologies, the inventor believes that the fabric is generally stored in a cool and shady place, and the fabric has good moisture absorption property, so that bacteria are easy to grow in the cool and shady place, and the water-washing resistance of the fabric is reduced after the fabric is washed for a long time, so that it is necessary to develop an antibacterial and water-washing resistant crepe made of rayon.
Disclosure of Invention
In order to improve the antibacterial and water-washing resistant performance of the rayon crepe, the application provides the long-acting biological antibacterial water-washing resistant rayon crepe and the preparation method thereof.
In a first aspect, the application provides a long-acting biological antibacterial washable crepe made of rayon, which adopts the following technical scheme:
the long-acting biological antibacterial washable rayon crepe comprises a cloth body and an antibacterial agent, wherein the antibacterial agent comprises the following components in parts by weight:
4-6 parts of carvacrol
2-10 parts of beta-cyclodextrin
74-76 parts of sodium alginate
86-115 parts of zein
10-12 parts of emulsifier
2-4 parts of a plasticizer.
Carvacrol is a monoterpene phenol compound, has antibacterial effect, can kill fungi or prevent the growth of fungi, and can inhibit the growth of most bacteria; after the beta-cyclodextrin is combined with the carvacrol, the carvacrol can be included, so that the stability of the carvacrol is improved, and the carvacrol has a slow release effect; the zein is assembled with the sodium alginate, distilled water, a phosphate solution and a calcium chloride solution are used as solvents, an emulsifier is used as an oil phase, the surface activity of the zein can be improved, the sodium alginate-zein emulsion microcapsule assembled by the sodium alginate-zein emulsion microcapsule is facilitated to further embed beta-cyclodextrin and carvacrol, so that the carvacrol is more stable, the carvacrol has a good long-acting slow release effect, and the long-term antibacterial performance of the fabric is improved; zein has unique film forming effect, is attached to the surface of the fabric, can improve the water washing resistance of the fabric, and the addition of the plasticizer further improves the mechanical strength of a zein film, so that the water washing resistance of the fabric is greatly improved.
Preferably, the mass ratio of the carvacrol to the beta-cyclodextrin is (0.5-1.5): 1.
the mass ratio of the carvacrol to the beta-cyclodextrin is controlled within the range, so that the inclusion rate of the beta-cyclodextrin to the carvacrol can be improved, and the carvacrol is more stable.
Preferably, the mass ratio of the sodium alginate to the zein is 1 (0.9-1.1).
The quality ratio of the sodium alginate to the zein is controlled within the range, so that the stability of the microcapsule can be improved.
Preferably, the preparation method of the antibacterial agent comprises the following steps:
s1: dissolving carvacrol in absolute ethyl alcohol, dissolving beta-cyclodextrin in water, mixing the carvacrol and the beta-cyclodextrin, stirring, filtering and drying to obtain clathrate compound powder;
s2, dissolving a part of zein in absolute ethyl alcohol, adding the clathrate compound powder, mixing to obtain a mixed solution, and fully stirring to obtain a carvacrol-zein solution;
s3: mixing sodium alginate, an emulsifier and a carvacrol-zein solution, stirring and shearing to obtain an oil-in-water emulsion, dropwise adding the oil-in-water emulsion into a calcium chloride solution, stirring, standing, filtering and drying to obtain carvacrol-sodium alginate-zein microcapsules;
s4: and mixing the plasticizer and the residual zein, adding the mixture into the carvacrol-sodium alginate-zein microcapsules, and uniformly stirring to obtain the antibacterial agent.
The beta-cyclodextrin includes carvacrol, so that the stability of the carvacrol is improved, the carvacrol has a slow release effect, after the zein is combined with the included carvacrol, the zein serving as a biomacromolecule can improve the characteristics of poor water solubility and easy decomposition of the carvacrol, the stability of the carvacrol is further improved, and the antibacterial effect of the carvacrol has a long-lasting effect; sodium alginate and zein are combined and assembled to form microcapsules, so that the included carvacrol is further embedded, the slow release effect of the carvacrol is improved, the long-acting antibacterial purpose is achieved, and the stability of the carvacrol is improved; the plasticizer is added into the antibacterial agent, so that the mechanical strength of the zein film is improved, and the water washing resistance of the fabric is improved.
Preferably, the emulsifier comprises the following components in parts by mass:
20-24 parts of glycerol
Tween-8014-16 parts;
the mass parts of the zein in the step S2 are 66-85 parts, and the mass parts of the zein in the step S4 are 20-30 parts.
The addition of the emulsifier can improve the surface activity of the zein, thereby promoting the formation of microcapsules.
Preferably, the plasticizer comprises the following components in parts by mass:
5-7 parts of polyethylene glycol
1.2-1.7 parts of a cross-linking agent.
After the polyethylene glycol is combined with the glycerol, the intramolecular acting force between protein polymers can be greatly reduced through the action of secondary bonds, so that the zein film can be stretched, the mechanical property of the zein film is improved, the strength of the film is improved, and after the film is covered on the surface of the fabric, the fibers of the fabric can be protected, so that the water washing resistance of the fabric is further improved.
Preferably, the crosslinking agent is one or more of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride, citric acid or epichlorohydrin.
The cross-linking agent forms cross-linking among zein molecules, so that the tensile strength of the zein film is remarkably improved, the mechanical strength of the zein film is improved, and the water washing resistance of the fabric is improved.
Preferably, the inclusion temperature of the beta-cyclodextrin and the carvacrol is 55-65 ℃.
The inclusion is carried out at the optimal temperature, so that the inclusion rate of the beta-cyclodextrin to the carvacrol can be improved.
Preferably, the inclusion time of the beta-cyclodextrin and the carvacrol is 120-140 min.
The inclusion is carried out in the optimal inclusion time, so that the inclusion rate of the beta-cyclodextrin to the carvacrol can be improved.
In a second aspect, the application provides a preparation method of a long-acting biological antibacterial washable crepe made of rayon, which adopts the following technical scheme:
a preparation method of long-acting biological antibacterial washable rayon crepe comprises the following steps:
spinning: selecting viscose fibers and crepe, sizing, and then performing blending weaving to obtain a rayon crepe fabric;
and (4) checking: according to the preparation process, the manufactured rayon crepe fabric is inspected, turned and sewn, and unqualified fabric is removed;
singeing: removing the fluff on the surface of the rayon crepe fabric at high temperature;
desizing: desizing the sizing agent on the human cotton crepe fabric;
boiling: boiling the crepe rayon fabric in high-temperature alkali liquor to remove residual impurities;
bleaching: bleaching at high temperature to further remove pulp and natural impurities;
mercerizing: under low temperature, the warp direction and the weft direction of the cloth are stressed and are treated by caustic soda solution;
dyeing: dyeing the fabric to obtain a fabric primary finished product;
and (3) antibacterial treatment: dissolving an antibacterial agent in an ethanol solution to obtain an antibacterial solution, soaking the fabric primary finished product in the antibacterial solution for 2-3h, and drying the fabric to obtain a prefabricated fabric;
finishing: and (4) inspecting the prefabricated fabric again according to the process requirements, removing the unqualified fabric, and then rolling and storing the fabric.
After the fabric is dyed, the fabric is in full contact with the antibacterial agent, and the antibacterial agent is attached to the surface of the fabric, so that the fabric has an excellent antibacterial effect, and the fabric is prevented from being corroded by fungi and the like; the plasticizer is added into the antibacterial agent, so that the water washing resistance of the fabric is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the carvacrol has antibacterial performance, can kill fungi or prevent fungi from growing, and can inhibit the growth of bacteria, and the antibacterial agent is attached to the surface of the fabric, so that the fabric has a good antibacterial effect; the beta-cyclodextrin inclusion of the carvacrol can improve the stability of the carvacrol, and can enable the carvacrol to be slowly released in the subsequent process so as to achieve the long-acting antibacterial effect and prolong the antibacterial aging of the cloth; the emulsifier can promote the assembly of zein and sodium alginate, and the zein and the sodium alginate form microcapsules after being assembled, so that the coated carvacrol is further embedded, the stability of the carvacrol is greatly improved, the slow release effect of the carvacrol is further improved, and the long-term antibacterial performance is achieved; the plasticizer is added into the antibacterial agent, so that the mechanical strength of the zein film can be improved, and the water washing resistance of the fabric is improved;
2. the plasticizer comprises polyethylene glycol and a cross-linking agent, and the polyethylene glycol and glycerol are combined to obtain the composite plasticizer, so that the molecular acting force between protein polymers can be reduced, and the protein film can be extended, so that the tensile strength of the protein film is improved, and the water washing resistance of the fabric is further improved; under the combined action of the cross-linking agent, the tensile strength and the mechanical strength of the zein can be improved, and the water washing resistance of the fabric is further improved.
Detailed Description
The embodiment of the application discloses long-acting biological antibacterial washable rayon crepe and a preparation method thereof.
Example 1
An antibacterial agent is prepared by weighing 4g of carvacrol, 2g of beta-cyclodextrin, 200mL of absolute ethyl alcohol, 86g of zein, 8g of sodium carbonate, 74g of sodium alginate, 50mL of distilled water, 200mL of 5mmol/L phosphate solution, 200mL of 5% (w/w) calcium chloride solution, 14g of Tween-80, 20g of glycerol, 5g of polyethylene glycol and 1.2g of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride.
Adding beta-cyclodextrin into 50mL of distilled water, and dissolving in water bath at 55 ℃ to obtain a beta-cyclodextrin water solution; dissolving carvacrol in 50mL of absolute ethyl alcohol, then adding a beta-cyclodextrin water solution, magnetically stirring for 140min at 55 ℃, placing in a refrigerator at 4 ℃ overnight, performing suction filtration, washing with absolute ethyl alcohol, and drying in a drying oven to obtain the clathrate compound powder.
Dissolving 66g of zein and the clathrate compound powder in 50mL of absolute ethyl alcohol, fully stirring for 2 hours to obtain a mixed solution, dissolving sodium carbonate in distilled water, adding 100mL of absolute ethyl alcohol, stirring to obtain a sodium carbonate alcoholic solution, adding the mixed solution into the sodium carbonate alcoholic solution, and stirring to obtain a carvacrol-zein solution.
Adding sodium alginate into 200mL of phosphate solution, fully stirring to completely dissolve the sodium alginate, mixing Tween-80 and glycerol to obtain an emulsifier, adding 10g of the emulsifier into the carvacrol-zein solution, shearing at the speed of 20000rpm to obtain an oil-in-water emulsion, slowly adding the oil-in-water emulsion into 200mL of calcium chloride solution, fully stirring for 2h, standing, filtering and drying to obtain the carvacrol-sodium alginate-zein microcapsule.
Selecting 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride as a cross-linking agent, mixing the 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride with polyethylene glycol to obtain a plasticizer, weighing 2g of the plasticizer, mixing with the rest 20g of zein, stirring, adding into the carvacrol-sodium alginate-zein microcapsule, and fully stirring to obtain the antibacterial agent.
A long-acting biological antibacterial washable rayon crepe is characterized by selecting viscose fibers and crepe, sizing, blending and weaving to obtain a rayon crepe fabric, inspecting the rayon crepe fabric according to a preparation process, turning the fabric and sewing, removing unqualified fabric, removing surface fluff of the qualified fabric by using high-temperature metal, desizing the pulp on the fabric, boiling in high-temperature alkali liquor, removing residual impurities, bleaching the fabric at high temperature, and further removing residual pulp and natural impurities; secondly, subjecting the fabric to stress in the warp direction and the weft direction at low temperature, carrying out mercerization by using a caustic soda solution, and then placing the fabric in a dyeing cylinder for dyeing to obtain a fabric primary finished product; adding an antibacterial agent into an ethanol solution to obtain an antibacterial solution with the concentration of 1%, soaking the primary fabric finished product into the antibacterial solution for 2-3h, then sending the fabric into an oven for drying to obtain a prefabricated fabric, performing secondary inspection on the prefabricated fabric, removing unqualified fabric, and rolling and storing the fabric to obtain the crepe rayon.
Example 2
An antibacterial agent is prepared by weighing 6g of carvacrol, 10g of beta-cyclodextrin, 300mL of absolute ethyl alcohol, 115g of zein, 10g of sodium carbonate, 76g of sodium alginate, 60mL of distilled water, 240mL of 5mmol/L phosphate solution, 240mL of 5% (w/w) calcium chloride solution, 16g of Tween-80, 24g of glycerol, 7g of polyethylene glycol and 1.7g of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride.
Adding beta-cyclodextrin into 60mL of distilled water, and dissolving the beta-cyclodextrin in water bath at 65 ℃ to obtain a beta-cyclodextrin water solution; dissolving carvacrol in 75mL of absolute ethyl alcohol, then adding a beta-cyclodextrin water solution, magnetically stirring for 120min at 65 ℃, putting the mixture in a refrigerator at 4 ℃ overnight, performing suction filtration, washing with absolute ethyl alcohol, and drying in a drying oven to obtain the clathrate compound powder.
Dissolving 85g of zein and the clathrate compound powder in 75mL of absolute ethyl alcohol, fully stirring for 2 hours to obtain a mixed solution, dissolving sodium carbonate in distilled water, adding 150mL of absolute ethyl alcohol, stirring to obtain a sodium carbonate alcoholic solution, adding the mixed solution into the sodium carbonate alcoholic solution, and stirring to obtain a carvacrol-zein solution.
Adding sodium alginate into 240mL of phosphate solution, fully stirring to completely dissolve the sodium alginate, mixing Tween-80 and glycerol to obtain an emulsifier, adding 12g of the emulsifier into the carvacrol-zein solution, shearing at the speed of 20000rpm to obtain an oil-in-water emulsion, slowly adding the oil-in-water emulsion into 240mL of calcium chloride solution, fully stirring for 2h, standing, filtering and drying to obtain the carvacrol-sodium alginate-zein microcapsule.
Selecting 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride as a cross-linking agent, mixing the 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride with polyethylene glycol to obtain a plasticizer, weighing 7g of the plasticizer, mixing with the rest 30g of zein, stirring, adding into the carvacrol-sodium alginate-zein microcapsule, and fully stirring to obtain the antibacterial agent.
A long-acting biological antibacterial washable rayon crepe is characterized by selecting viscose fibers and crepe, sizing, blending and weaving to obtain a rayon crepe fabric, inspecting the rayon crepe fabric according to a preparation process, turning the fabric and sewing, removing unqualified fabric, removing surface fluff of the qualified fabric by using high-temperature metal, desizing the pulp on the fabric, boiling in high-temperature alkali liquor, removing residual impurities, bleaching the fabric at high temperature, and further removing residual pulp and natural impurities; secondly, subjecting the cloth to stress in the warp direction and the weft direction at a low temperature, carrying out mercerization by using a caustic soda solution, and then placing the cloth in a dyeing cylinder for dyeing to obtain a fabric primary finished product; adding an antibacterial agent into an ethanol solution to obtain an antibacterial solution with the concentration of 1%, soaking the primary finished fabric product into the antibacterial solution for 2-3h, then sending the fabric into an oven to be dried to obtain a prefabricated fabric, carrying out secondary inspection on the prefabricated fabric, removing unqualified fabric, and rolling and storing the fabric to obtain the rayon crepe.
Example 3
An antibacterial agent is prepared by weighing 6g of carvacrol, 6g of beta-cyclodextrin, 150mL of absolute ethyl alcohol, 100g of zein, 9g of sodium carbonate, 75g of sodium alginate, 55mL of distilled water, 220mL of 5mmol/L phosphate solution, 220mL of 5% (w/w) calcium chloride solution, 15g of Tween-80, 22g of glycerol, 6g of polyethylene glycol and 1.5g of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride.
Adding beta-cyclodextrin into 55mL of distilled water, and dissolving the beta-cyclodextrin in water bath at 60 ℃ to obtain a beta-cyclodextrin water solution; dissolving carvacrol in 75mL of absolute ethyl alcohol, then adding a beta-cyclodextrin water solution, magnetically stirring for 130min at 60 ℃, placing in a refrigerator at 4 ℃ overnight, performing suction filtration, washing with absolute ethyl alcohol, and drying in a drying oven to obtain the clathrate compound powder.
Dissolving 75g of zein and the clathrate compound powder in 75mL of absolute ethyl alcohol, fully stirring for 2 hours to obtain a mixed solution, dissolving sodium carbonate in distilled water, adding 100mL of absolute ethyl alcohol, stirring to obtain a sodium carbonate alcoholic solution, adding the mixed solution into the sodium carbonate alcoholic solution, and stirring to obtain a carvacrol-zein solution.
Adding sodium alginate into 220mL of phosphate solution, fully stirring to completely dissolve the sodium alginate, mixing Tween-80 and glycerol to obtain an emulsifier, adding 11g of the emulsifier into the carvacrol-zein solution, shearing at the speed of 20000rpm to obtain an oil-in-water emulsion, slowly adding the oil-in-water emulsion into 220mL of calcium chloride solution, fully stirring for 2h, standing, filtering and drying to obtain the carvacrol-sodium alginate-zein microcapsule.
Selecting 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride as a cross-linking agent, mixing the 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride with polyethylene glycol to obtain a plasticizer, weighing 6g of the plasticizer, mixing with the rest 25g of zein, stirring, adding into the carvacrol-sodium alginate-zein microcapsule, and fully stirring to obtain the antibacterial agent.
A long-acting biological antibacterial washable rayon crepe is characterized by selecting viscose fibers and crepe, sizing, blending and weaving to obtain a rayon crepe fabric, inspecting the rayon crepe fabric according to a preparation process, turning the fabric and sewing, removing unqualified fabric, removing surface fluff of the qualified fabric by using high-temperature metal, desizing the pulp on the fabric, boiling in high-temperature alkali liquor, removing residual impurities, bleaching the fabric at high temperature, and further removing residual pulp and natural impurities; secondly, subjecting the cloth to stress in the warp direction and the weft direction at a low temperature, carrying out mercerization by using a caustic soda solution, and then placing the cloth in a dyeing cylinder for dyeing to obtain a fabric primary finished product; adding an antibacterial agent into an ethanol solution to obtain an antibacterial solution with the concentration of 1%, soaking the primary finished fabric product into the antibacterial solution for 2-3h, then sending the fabric into an oven to be dried to obtain a prefabricated fabric, carrying out secondary inspection on the prefabricated fabric, removing unqualified fabric, and rolling and storing the fabric to obtain the rayon crepe.
Example 4
Example 4 is based on example 3, and example 4 differs from example 3 only in that: in example 4, the mass ratio of carvacrol to beta-cyclodextrin is 2: 1.
Example 5
Example 5 is based on example 3, and example 5 differs from example 3 only in that: in example 5, the mass ratio of carvacrol to beta-cyclodextrin is 0.5: 2.
Example 6
Example 6 is based on example 3, and example 6 differs from example 3 only in that: the mass ratio of sodium alginate to zein in example 6 was 1: 0.7.
Example 7
Example 7 is based on example 3, and example 7 differs from example 3 only in that: the mass ratio of sodium alginate to zein in example 7 was 1: 1.3.
Comparative example 1
Comparative example 1 is based on example 3, and comparative example 1 differs from example 3 only in that: the polyethylene glycol in comparative example 1 was replaced with palmitic acid.
Comparative example 2
Comparative example 2 is based on example 3, which comparative example 2 differs from example 3 only in that: the 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride in comparative example 2 was replaced by glutaraldehyde.
Comparative example 3
Comparative example 3 is based on example 3, which differs from example 3 only in that: the magnetic stirring temperature of carvacrol and beta-cyclodextrin in comparative example 3 was 70 ℃.
Comparative example 4
Comparative example 4 is based on example 3, comparative example 4 differing from example 3 only in that: in comparative example 4 the magnetic stirring time of carvacrol and beta-cyclodextrin was 150 min.
Comparative example 5
Comparative example 5 is based on example 3, and comparative example 5 differs from example 3 only in that: in comparative example 5 no glycerol was added.
Performance test
The crepe rayon made of the crepes made of the rayon in examples 1 to 7 and comparative examples 1 to 4 was sampled, and the samples were subjected to a mold resistance test and a water washing resistance test.
(1) Selecting GB/T20944.2-2007 evaluation of antibacterial performance of textiles as a standard, taking 3 samples, washing each size (10cm x 10cm), implanting thalli, culturing the samples for 28 days, detecting, taking an average value after detection, and filling test results into table 1.
(2) Selecting GBT 12490-.
TABLE 1
And (3) analysis of detection data:
as shown in Table 1, the sterilization rate of the fabric prepared in the examples 1 to 3 is more than 99%, so that the fabric prepared in the application has a good antibacterial effect; the color fastness grades of examples 1-3 were 5 grades, so that it can be seen that the fabrics prepared in this application have good washing fastness.
As can be seen from table 1, example 3 differs from example 4 in that: the mass ratio of carvacrol to beta-cyclodextrin in example 3 is 1:1, the mass ratio of carvacrol to beta-cyclodextrin in example 4 is 2:1, the sterilization rate in example 3 is more than 99%, the sterilization rate in example 4 is less than 99%, and the antibacterial effect of example 4 is reduced compared with example 3 because carvacrol is not completely included after the mass ratio of beta-cyclodextrin is reduced, so that the inclusion rate is reduced, and carvacrol which is free outside is weak in stability and is volatile; after a certain period of time, the antibacterial component in the composition is reduced, and the antibacterial effect on fungi is weakened, so that the sterilization rate is reduced.
As can be seen from table 1, example 3 differs from example 5 in that: the mass ratio of carvacrol to beta-cyclodextrin in example 3 is 1:1, the mass ratio of carvacrol to beta-cyclodextrin in example 5 is 0.5:2, the sterilization rate in example 3 is more than 99%, the sterilization rate in example 5 is less than 99%, and the antibacterial effect of example 5 is reduced compared with example 3 because the beta-cyclodextrin is too much, the beta-cyclodextrin drug loading amount is small, the content of included carvacrol is low, the inclusion rate is reduced, the proportion of antibacterial components is reduced, the inhibition effect on bacteria is reduced, and the antibacterial components in the components are difficult to sterilize the bacteria greatly after a period of time, so the sterilization rate is reduced.
As can be seen from table 1, example 3 differs from example 6 in that: the mass ratio of the sodium alginate to the zein in example 3 is 1:1, the mass ratio of the sodium alginate to the zein in example 6 is 1:0.7, the sterilization rate in example 3 is more than 99%, the sterilization rate in example 6 is less than 99%, and the sterilization rate in example 6 is reduced compared with example 3, probably because the sodium alginate is a long-chain polysaccharide with a large molecular weight, when the sodium alginate is assembled with the zein, the polysaccharide molecules rotate, a large volume is needed, so that the sugar molecules are easy to collide with other molecules, the mechanical structure of the whole is damaged due to excessive addition of the sodium alginate, the stability between the sodium alginate and the zein is reduced, the carvacrol loaded in the microcapsule becomes unstable, the carvacrol is released from the microcapsule, and the volatilization of antibacterial components is accelerated, after a period of time, the sterilization rate decreases.
The color fastness grade of example 3 is 5 grade, the color fastness grade of example 6 is 3 grade, and the color fastness grade of example 6 is reduced compared with that of example 3, which is probably because the excessive sodium alginate destroys the mechanical structure, so that the stability of the zein film is reduced, the mechanical strength of the film is reduced, the tensile strength is reduced, the washing resistance of the fabric is reduced, and the color fastness grade is reduced.
From table 1, it can be seen that example 3 differs from example 7 in that: the mass ratio of the sodium alginate to the zein in example 3 is 1:1, the mass ratio of the sodium alginate to the zein in example 7 is 1:1.3, the sterilization rate in example 3 is more than 99%, the sterilization rate in example 6 is less than 99%, and the sterilization rate in example 7 is reduced compared with example 3, which is probably because the balance between the zein and the sodium alginate is broken after the zein is continuously added, and the film forming properties of the zein and the sodium alginate play a leading role, so the balance performance is reduced, and the carvacrol in the microcapsule has low stability and is easy to volatilize; after a period of time, the antimicrobial components volatilize and the sterilization rate decreases.
The color fastness grade in example 3 is 5 grade, the color fastness grade in example 7 is 3 grade, and the color fastness grade in example 7 is reduced compared with example 3, which is probably because the addition of too much zein leads the film forming properties of sodium alginate and zein to play a leading role, the balance between the sodium alginate and the zein is damaged, the stability is reduced, the mechanical strength of the zein film is reduced, the washing resistance of the fabric is reduced, and the color fastness grade is reduced.
As can be seen from table 1, example 3 differs from comparative example 1 in that: the plasticizer in example 3 is selected from polyethylene glycol, the plasticizer in comparative example 1 is replaced by palmitic acid, the color fastness grade in example 3 is 5 grade, the color fastness grade in comparative example 1 is 4 grade, and the color fastness grade in comparative example 1 is reduced compared with example 3, because palmitic acid and glycerol are not mutually influenced, the intramolecular acting force between protein polymers is difficult to reduce, the ductility improving range of the protein film is small, the strength improving degree of the protein film is small, the mechanical performance improving range of the protein film is weak, the washing resistance effect of the fabric is small, and the color fastness grade is reduced.
As can be seen from table 1, example 3 differs from comparative example 2 in that: the cross-linking agent in example 3 is 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride, the cross-linking agent in comparative example 2 is glutaraldehyde, and the color fastness of comparative example 2 is reduced compared with that of example 3, which is probably because the temperature is slightly increased when the 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride is cross-linked with the zein, and the zein film is enhanced probably depending on the temperature, so that the mechanical strength of the zein film in example 3 is greatly improved; after the glutaraldehyde and the zein are crosslinked, the temperature change is not obvious, and the mechanical strength improvement strength of the zein polymeric membrane is weaker, so that the tensile strength of the membrane is improved weaker, and the water washing resistance of the fabric is weaker; the glutaraldehyde has an antibacterial effect, and after the glutaraldehyde is selected as a cross-linking agent, antibacterial components in the antibacterial agent are increased, so that the sterilization rate is slightly improved.
As can be seen from table 1, example 3 differs from comparative example 3 in that: the inclusion temperature between carvacrol and beta-cyclodextrin in example 3 is 60 ℃, the inclusion temperature between carvacrol and beta-cyclodextrin in comparative example 3 is 70 ℃, the sterilization rate in example 3 is more than 99%, and the sterilization rate in comparative example 3 is less than 99%, because carvacrol is an active antibacterial ingredient, and the carvacrol is easily oxidized and decomposed due to overhigh temperature, so that the antibacterial active ingredient is reduced, the sterilization performance is also reduced, and the sterilization rate is reduced.
As can be seen from table 1, example 3 differs from comparative example 4 in that: the inclusion time between carvacrol and beta-cyclodextrin in example 3 is 130min, the inclusion time between carvacrol and beta-cyclodextrin in comparative example 4 is 150min, the sterilization rate in example 3 is more than 99%, and the sterilization rate in comparative example 4 is less than 99%, because the inclusion process is that carvacrol enters a hydrophobic cavity of beta-cyclodextrin to form a hydrophobic bond, and after the reaction is too long, carvacrol can be separated from the beta-cyclodextrin, so that part of carvacrol is dissociated outside, the stability of carvacrol is difficult to be improved and easy to volatilize, and after a period of time, part of antibacterial components volatilize, the antibacterial effect is reduced, and the sterilization rate is reduced.
As can be seen from table 1, example 3 differs from comparative example 5 in that: the emulsifier in the embodiment 3 is tween-80 and glycerol, the emulsifier in the comparative example 5 is only tween-80, the sterilization rate in the embodiment 3 is more than 99%, and the sterilization rate in the comparative example 5 is less than 99%, because the glycerol and tween-80 are used as the emulsifier, the surface activity of zein can be improved, so that the formation of the microcapsule of zein and sodium alginate is promoted, the assembly effect of the microcapsule is reduced to some extent by using only tween-80 as a single emulsifier, the stability is reduced, the embedding effect on carvacrol and beta-cyclodextrin is weakened, carvacrol and beta-cyclodextrin are partially dissociated outside, the antibacterial component is volatile, the antibacterial effect is reduced after a period of time, and the sterilization rate is reduced.
The color fastness grade in example 3 is grade 5, the color fastness grade in comparative example 5 is grade 3, and the color fastness grade in comparative example 5 is reduced compared with example 3, because the glycerol and the polyethylene glycol can be used as composite plasticizers, the improvement capability of the composite plasticizers on the mechanical strength of the zein film is good, and the color fastness grade in comparative example 5 is reduced because the polyethylene glycol is only used as a single plasticizer, and the improvement capability of the composite plasticizers on the mechanical strength of the zein is weak.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The long-acting biological antibacterial washable rayon crepe is characterized in that: the antibacterial fabric comprises a fabric body and an antibacterial agent, wherein the antibacterial agent comprises the following components in parts by weight:
4-6 parts of carvacrol
2-10 parts of beta-cyclodextrin
74-76 parts of sodium alginate
86-115 parts of zein
10-12 parts of emulsifier
2-4 parts of a plasticizer.
2. The long-acting biological antibacterial washable crepe rayon as set forth in claim 1, wherein: the mass ratio of carvacrol to beta-cyclodextrin is (0.5-1.5): 1.
3. the long-acting biological antibacterial washable crepe rayon as set forth in claim 1, wherein: the mass ratio of the sodium alginate to the zein is 1 (0.9-1.1).
4. The long-acting biological antibacterial washable crepe rayon as set forth in claim 1, wherein: the preparation method of the antibacterial agent comprises the following steps:
s1: dissolving carvacrol in absolute ethyl alcohol, dissolving beta-cyclodextrin in water, mixing the carvacrol and the beta-cyclodextrin, stirring, filtering and drying to obtain clathrate compound powder;
s2, dissolving a part of zein in absolute ethyl alcohol, adding the clathrate compound powder, mixing to obtain a mixed solution, and fully stirring to obtain a carvacrol-zein solution;
s3: mixing sodium alginate, an emulsifier and a carvacrol-zein solution, stirring and shearing to obtain an oil-in-water emulsion, dropwise adding the oil-in-water emulsion into a calcium chloride solution, stirring, standing, filtering and drying to obtain carvacrol-sodium alginate-zein microcapsules;
s4: and (3) mixing the plasticizer and the residual zein, adding the mixture into the carvacrol-sodium alginate-zein microcapsule, and uniformly stirring to obtain the antibacterial agent.
5. The long-acting biological antibacterial water-washable crepe cotton as described in claim 4, wherein: the emulsifier comprises the following components in parts by mass:
20-24 parts of glycerol
Tween-8014-16 parts;
the mass parts of the zein in the step S2 are 66-85 parts, and the mass parts of the zein in the step S4 are 20-30 parts.
6. The long-acting bio-antibacterial washable crepe rayon as set forth in claim 4, wherein: the plasticizer comprises the following components in parts by weight:
5-7 parts of polyethylene glycol
1.2-1.7 parts of a cross-linking agent.
7. The long-acting biological antibacterial washable crepe rayon as set forth in claim 5, wherein: the cross-linking agent is one or more of 1- (3-dimethylaminopropyl) -3-ethylcarbodiimide hydrochloride, citric acid or epichlorohydrin.
8. The long-acting bio-antibacterial washable crepe rayon as set forth in claim 4, wherein: the inclusion temperature of the beta-cyclodextrin and the carvacrol is 55-65 ℃.
9. The long-acting bio-antibacterial washable crepe rayon as set forth in claim 4, wherein: the inclusion time of the beta-cyclodextrin and the carvacrol is 120-140 min.
10. A method for preparing the long-acting biological antibacterial washable crepe rayon as claimed in claim 1, characterized in that: the method comprises the following steps:
spinning: selecting viscose fibers and crepe, sizing, and then performing blending weaving to obtain a rayon crepe fabric;
and (4) checking: according to the preparation process, the manufactured rayon crepe fabric is inspected, turned and sewn, and unqualified fabric is removed;
singeing: removing the fluff on the surface of the rayon crepe fabric at high temperature;
desizing: desizing the sizing agent on the human cotton crepe fabric;
boiling: boiling the crepe rayon fabric in high-temperature alkali liquor to remove residual impurities;
bleaching: bleaching at high temperature to further remove pulp and natural impurities;
mercerizing: under low temperature, the warp direction and the weft direction of the cloth are stressed and are treated by caustic soda solution;
dyeing: dyeing the fabric to obtain a fabric primary finished product;
and (3) antibacterial treatment: dissolving an antibacterial agent in an ethanol solution to obtain an antibacterial solution, soaking the fabric primary finished product in the antibacterial solution for 2-3h, and drying the fabric to obtain a prefabricated fabric;
finishing: and (4) inspecting the prefabricated fabric again according to the process requirements, removing the unqualified fabric, and then rolling and storing the fabric.
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| CN116065391A (en) * | 2023-02-14 | 2023-05-05 | 罗莱生活科技股份有限公司 | Modified soybean protein fiber and antibacterial composite fabric as well as preparation and application thereof |
| CN116219568A (en) * | 2023-02-15 | 2023-06-06 | 泰州市广源化纺有限公司 | Antibacterial polypropylene filament and preparation method thereof |
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