CN113512822B - Degradable non-woven fabric and preparation method thereof - Google Patents
Degradable non-woven fabric and preparation method thereof Download PDFInfo
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- CN113512822B CN113512822B CN202110369835.4A CN202110369835A CN113512822B CN 113512822 B CN113512822 B CN 113512822B CN 202110369835 A CN202110369835 A CN 202110369835A CN 113512822 B CN113512822 B CN 113512822B
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 116
- 229940070527 tourmaline Drugs 0.000 claims abstract description 89
- 229910052613 tourmaline Inorganic materials 0.000 claims abstract description 89
- 239000011032 tourmaline Substances 0.000 claims abstract description 89
- 229920000742 Cotton Polymers 0.000 claims abstract description 49
- 241000609240 Ambelania acida Species 0.000 claims abstract description 44
- 239000010905 bagasse Substances 0.000 claims abstract description 44
- 239000010902 straw Substances 0.000 claims abstract description 37
- 241000209140 Triticum Species 0.000 claims abstract description 35
- 235000021307 Triticum Nutrition 0.000 claims abstract description 35
- 239000000843 powder Substances 0.000 claims abstract description 24
- 230000000844 anti-bacterial effect Effects 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims description 60
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 45
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 239000002994 raw material Substances 0.000 claims description 28
- 238000005406 washing Methods 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 229920001661 Chitosan Polymers 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 19
- 239000008367 deionised water Substances 0.000 claims description 17
- 229910021641 deionized water Inorganic materials 0.000 claims description 17
- 239000002002 slurry Substances 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 10
- 238000000498 ball milling Methods 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 10
- 238000009987 spinning Methods 0.000 claims description 10
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 108090000526 Papain Proteins 0.000 claims description 7
- 239000004365 Protease Substances 0.000 claims description 7
- 229940055729 papain Drugs 0.000 claims description 7
- 235000019834 papain Nutrition 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 5
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 5
- 238000004061 bleaching Methods 0.000 claims description 5
- 239000001110 calcium chloride Substances 0.000 claims description 5
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 5
- 239000003599 detergent Substances 0.000 claims description 5
- 238000010041 electrostatic spinning Methods 0.000 claims description 5
- 238000006200 ethylation reaction Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 230000003301 hydrolyzing effect Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000001632 sodium acetate Substances 0.000 claims description 5
- 235000017281 sodium acetate Nutrition 0.000 claims description 5
- 239000000341 volatile oil Substances 0.000 claims description 5
- KAIPKTYOBMEXRR-UHFFFAOYSA-N 1-butyl-3-methyl-2h-imidazole Chemical class CCCCN1CN(C)C=C1 KAIPKTYOBMEXRR-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 14
- 150000002500 ions Chemical class 0.000 abstract description 3
- 230000010287 polarization Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 35
- 239000003570 air Substances 0.000 description 10
- 102000008186 Collagen Human genes 0.000 description 6
- 108010035532 Collagen Proteins 0.000 description 6
- 229920001436 collagen Polymers 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 230000003020 moisturizing effect Effects 0.000 description 5
- 239000011550 stock solution Substances 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 4
- IAZSXUOKBPGUMV-UHFFFAOYSA-N 1-butyl-3-methyl-1,2-dihydroimidazol-1-ium;chloride Chemical compound [Cl-].CCCC[NH+]1CN(C)C=C1 IAZSXUOKBPGUMV-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000000643 oven drying Methods 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 102000015636 Oligopeptides Human genes 0.000 description 1
- 108010038807 Oligopeptides Proteins 0.000 description 1
- 229920002385 Sodium hyaluronate Polymers 0.000 description 1
- 229940069521 aloe extract Drugs 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010634 clove oil Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229940119170 jojoba wax Drugs 0.000 description 1
- 229940010747 sodium hyaluronate Drugs 0.000 description 1
- YWIVKILSMZOHHF-QJZPQSOGSA-N sodium;(2s,3s,4s,5r,6r)-6-[(2s,3r,4r,5s,6r)-3-acetamido-2-[(2s,3s,4r,5r,6r)-6-[(2r,3r,4r,5s,6r)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2- Chemical compound [Na+].CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 YWIVKILSMZOHHF-QJZPQSOGSA-N 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Woven Fabrics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
The invention discloses a degradable non-woven fabric and a preparation method thereof, which relate to the technical field of non-woven fabrics and have the technical scheme that the degradable non-woven fabric comprises the following components in parts by weight: 22-28 parts of bagasse fiber, 38-46 parts of cotton fiber, 18-20 parts of wheat straw fiber and 12-16 parts of tourmaline fiber. The tourmaline powder in the tourmaline fiber has the electric polarization phenomenon by combining the bagasse fiber, the cotton fiber, the wheat straw fiber and the tourmaline fiber, and in combination with the bagasse fiber, the tourmaline fiber is in an unstable state that one end generates a positive electrode and the other end generates a negative electrode, so that negative ions are generated by ionizing moisture in the surrounding air after potential difference is generated, and the effect of remarkably improving the antibacterial function is realized by emitting far infrared rays.
Description
Technical Field
The invention relates to the technical field of non-woven fabrics, in particular to a degradable non-woven fabric and a preparation method thereof.
Background
Tissues have been the most common sanitary products in life, and their level of safety and hygiene has been the focus of consumer care. In recent years, the paper towel products represented by all-cotton spunlaced non-woven fabric cotton soft towels are widely accepted in the market, and the paper towel products are manufactured by adopting an all-cotton spunlaced non-woven fabric process and then performing high-pressure steam sterilization treatment, so that the safety and sanitation level can basically meet the daily life requirements of consumers. However, once the cotton soft towel is unpacked, a large amount of bacteria can be bred in the air in the cotton soft towel left in the package before the cotton soft towel is completely used, especially when the cotton soft towel is put in a place where bacteria are easy to breed in a toilet, so that the safety and sanitary level of the cotton soft towel in the use process is reduced.
The Chinese patent application document with the publication number of CN109481348A discloses a moisturizing cotton soft towel and a preparation method thereof, wherein the moisturizing cotton soft towel comprises soft dry paper towels and collagen stock solution, the collagen stock solution is uniformly sprayed on the surfaces of the soft dry paper towels, and the collagen stock solution comprises the following components in parts by weight: 2-6 parts of jojoba oil, 1.5-3 parts of aloe extract, 50-65 parts of deionized water, 1-4 parts of glycerol, 0.3-0.6 part of oligopeptide, 1-3 parts of clove oil, 2-6 parts of collagen, 0.1-0.3 part of sodium hyaluronate and 2-4 parts of 1-3 propylene glycol; the preparation method of the moisturizing cotton soft towel comprises the following steps: s1: weighing and proportioning, S2: and (3) preparing a phase A raw material, and S3: b, preparing a phase B raw material, and S4: preparing collagen stock solution, S5: and (5) performing spraying treatment.
However, the moisturizing cotton soft towel cannot achieve an effective antibacterial effect only by spraying collagen stock solution on the surface of the soft dry paper towel, so that the safe use of the cotton soft towel is affected, and the moisturizing cotton soft towel needs to be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the first aim of the invention is to provide a degradable non-woven fabric which has the effect of obviously improving the antibacterial capacity.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the degradable non-woven fabric comprises the following components in parts by weight: 22-28 parts of bagasse fiber, 38-46 parts of cotton fiber, 18-20 parts of wheat straw fiber and 12-16 parts of tourmaline fiber.
The invention is further provided with: the bagasse fiber is obtained by sequentially crushing bagasse by a crusher, screening by a screen, washing, drying, and then putting the dried bagasse into a chlorinated 1-butyl-3-methylimidazole solution serving as a solvent medium to be covalently bonded with side chain groups of papain.
The invention is further provided with: the cotton fiber is obtained by sequentially crushing, washing and drying raw cotton by a crusher; the washing adopts essential oil and water with a weight ratio of 5:95 as a detergent.
The invention is further provided with: the wheat straw fiber is obtained by sequentially cutting, screening and washing wheat straw, drying, pre-hydrolyzing under the pressure of 1.2-1.4MPa, the temperature of 145-160 ℃ and the liquid ratio of 1:5, and washing and bleaching the hydrolyzed wheat straw.
The invention is further provided with: the tourmaline fiber is obtained by adopting the following components in parts by weight: 12, dissolving chitosan in acetic acid solution with the mass fraction of 10% to decalcify, then defoaming and filtering the acetic acid solution, adding the filtered chitosan into sodium hydroxide solution to deproteinize, and controlling the concentration of sodium hydroxide to be 0.1mol/L; finally, the deproteinized chitosan is subjected to de-ethylation in the cleaning of acetic acid solution to form spinning solution in sodium acetate, and the modified tourmaline powder is put into the spinning solution and solidified into filaments by adopting calcium chloride to obtain the modified tourmaline powder.
The invention is further provided with: the preparation method of the modified tourmaline powder comprises the steps of crushing and ball milling tourmaline raw materials to 400 meshes, drying, air flow crushing and air flow classification sequentially by a crusher, wherein the particle size of the modified tourmaline powder is 20-160 mu m.
The invention is further provided with: the drying is divided into primary drying, secondary drying and tertiary drying, wherein the primary drying is to put the tourmaline raw material subjected to ball milling into alcohol, take out, and dry for 10min at 220 ℃; the secondary drying is to put the tourmaline raw material which is dried once into deionized water, take out, and dry for 15min at 260 ℃; the three times of drying are to put the twice-dried tourmaline raw material into dimethylaminoethyl methacrylate, take out, and dry for 6min at 280 ℃.
The second object of the present invention is to provide a method for preparing a degradable nonwoven fabric, comprising the steps of:
Step 1, adding 22-28 parts of bagasse fibers, 38-46 parts of cotton fibers, 18-20 parts of wheat straw fibers and 12-16 parts of tourmaline fibers into deionized water according to parts by weight to form fiber slurry;
And step 2, adding polyvinyl alcohol into the fiber slurry, adopting an electrostatic spinning process to obtain a non-woven fabric primary material, and then carrying out line pressing treatment and cutting to obtain the antibacterial degradable soft towel.
The invention is further provided with: in the step 1, tourmaline fibers and bagasse fibers are firstly added into deionized water, and cotton fibers and wheat straw fibers are sequentially added after uniform stirring so as to form fiber slurry.
The invention is further provided with: in the step 2, the weight part ratio of the added polyvinyl alcohol to the fiber slurry is 3-8:90-110.
In summary, the invention has the following beneficial effects:
1. Through combining bagasse fiber, cotton fiber, wheat straw fiber and tourmaline fiber, tourmaline powder in the tourmaline fiber has an electric polarization phenomenon, so that the tourmaline fiber is in an unstable state that one end generates a positive electrode and the other end generates a negative electrode, thereby generating negative ions by ionizing moisture in ambient air after potential difference, and realizing the effect of remarkably improving a bacteriostasis function by emitting far infrared rays;
2. the thermal stability of the degradable non-woven fabric is obviously improved by covalent bonds in bagasse fibers and papain, and the bagasse is mainly used for manufacturing, so that the degradable non-woven fabric has the characteristic of oil absorption, and the combination stability is obviously improved when the degradable non-woven fabric is combined with cotton fibers, wheat straw fibers and tourmaline fibers, and meanwhile, the reaction efficiency is obviously improved and the preparation period of the degradable non-woven fabric is shortened by using a chlorinated 1-butyl-3-methylimidazole solution as a solvent medium;
3. Through the combination of chitosan and modified tourmaline powder in the tourmaline fiber, the structural strength of the tourmaline fiber is improved, the influence on the environment is effectively avoided by the treatment process of the chitosan, the effects of sustainable development and simple process are achieved, and meanwhile, the chitosan has the effects of strong bacteriostasis and adsorption capacity, so that the non-woven fabric has the effect of effectively combining bagasse fiber, cotton fiber and straw fiber;
4. Through drying the tourmaline raw material for a plurality of times, and adopting alcohol, deionized water and dimethylaminoethyl methacrylate in the drying for a plurality of times respectively, the temperature of each time is gradually increased so as to achieve the effect of quick drying, and when the alcohol is attached to the surface and the inner side of the tourmaline raw material, the effect of further cleaning the tourmaline surface is formed through drying, so that the retention of impurities is avoided; the deionized water is used for cleaning the interior of the tourmaline raw material, so that alcohol retention is avoided; after being dried, the dimethylaminoethyl methacrylate is combined with bagasse fibers, cotton fibers and wheat straw fibers to further improve the hydrophilicity, the adhesiveness and the thermosetting property of the degradable non-woven fabric.
Detailed Description
Example 1
The degradable non-woven fabric comprises the following components in parts by weight: 22 parts of bagasse fiber, 38 parts of cotton fiber, 18 parts of wheat straw fiber and 12 parts of tourmaline fiber.
Wherein:
The bagasse fiber is obtained by sequentially crushing bagasse by a crusher, screening by a screen, washing, drying, and then putting the dried bagasse into a solution of 1-butyl-3-methylimidazole chloride serving as a solvent medium to be covalently bonded with side chain groups of papain.
The cotton fiber is obtained by sequentially crushing raw cotton by a crusher, washing and drying; and the washing adopts essential oil and water with the weight ratio of 5:95 as a detergent.
The wheat straw fiber is obtained through cutting wheat straw, sieving, washing with water, drying, pre-hydrolyzing at 145 deg.c and 1 to 5 liquid ratio under 1.2MPa pressure, washing and bleaching.
The tourmaline fiber is obtained by adopting the following components in parts by weight: 12, dissolving chitosan in acetic acid solution with the mass fraction of 10% to decalcify, then defoaming and filtering the acetic acid solution, adding the filtered chitosan into sodium hydroxide solution to deproteinize, and controlling the concentration of sodium hydroxide to be 0.1mol/L; finally, the deproteinized chitosan is subjected to de-ethylation in the cleaning of acetic acid solution to form spinning solution in sodium acetate, and the modified tourmaline powder is put into the spinning solution and solidified into filaments by adopting calcium chloride to obtain the modified tourmaline powder.
It should be noted that the modified tourmaline powder is prepared by crushing tourmaline raw materials sequentially by a crusher, ball milling to 400 mesh, oven drying, air flow pulverizing, and air flow classifying, and has an average particle diameter of 35 μm. In the preparation method of the modified tourmaline powder, the adopted drying process is divided into primary drying, secondary drying and tertiary drying, wherein the primary drying is to put the tourmaline raw material processed by ball milling into alcohol and take out, and then dry for 10min at 220 ℃; the secondary drying is to put the tourmaline raw material which is dried once into deionized water, take out, and dry for 15min at 260 ℃; the third drying is to put the twice dried tourmaline raw material into dimethylaminoethyl methacrylate, take out, and dry for 6min at 280 ℃.
The invention also provides a preparation method of the degradable non-woven fabric, which comprises the following steps:
Step 1, taking 22 parts of bagasse fibers, 38 parts of cotton fibers, 18 parts of wheat straw fibers and 12 parts of tourmaline fibers according to parts by weight, firstly adding the tourmaline fibers and the bagasse fibers into deionized water, uniformly stirring, then sequentially adding the cotton fibers and the wheat straw fibers, and uniformly stirring to form fiber slurry;
step 2, adding polyvinyl alcohol into the fiber slurry, wherein the weight part ratio of the added polyvinyl alcohol to the fiber slurry is 1:30, adopting an electrostatic spinning process to obtain a non-woven fabric primary material, and then obtaining the antibacterial degradable soft towel after line pressing treatment and cutting.
Example two
The degradable non-woven fabric comprises the following components in parts by weight: 25 parts of bagasse fiber, 42 parts of cotton fiber, 19 parts of wheat straw fiber and 14 parts of tourmaline fiber.
Wherein:
The bagasse fiber is obtained by sequentially crushing bagasse by a crusher, screening by a screen, washing, drying, and then putting the dried bagasse into a solution of 1-butyl-3-methylimidazole chloride serving as a solvent medium to be covalently bonded with side chain groups of papain.
The cotton fiber is obtained by sequentially crushing raw cotton by a crusher, washing and drying; and the washing adopts essential oil and water with the weight ratio of 5:95 as a detergent.
The wheat straw fiber is obtained through cutting wheat straw, sieving, washing with water, drying, pre-hydrolyzing at 151 deg.c and 1 to 5 liquid ratio under pressure of 1.3MPa, washing and bleaching.
The tourmaline fiber is obtained by adopting the following components in parts by weight: 6, dissolving chitosan in acetic acid solution with the mass fraction of 10% to decalcify, then defoaming and filtering the acetic acid solution, adding the filtered chitosan into sodium hydroxide solution to deproteinize, and controlling the concentration of sodium hydroxide to be 0.1mol/L; finally, the deproteinized chitosan is subjected to de-ethylation in the cleaning of acetic acid solution to form spinning solution in sodium acetate, and the modified tourmaline powder is put into the spinning solution and solidified into filaments by adopting calcium chloride to obtain the modified tourmaline powder.
It should be noted that the modified tourmaline powder is prepared by crushing tourmaline raw materials sequentially by a crusher, ball milling to 400 mesh, oven drying, air flow pulverizing, and air flow classifying, and has an average particle diameter of 79 μm. In the preparation method of the modified tourmaline powder, the adopted drying process is divided into primary drying, secondary drying and tertiary drying, wherein the primary drying is to put the tourmaline raw material processed by ball milling into alcohol and take out, and then dry for 10min at 220 ℃; the secondary drying is to put the tourmaline raw material which is dried once into deionized water, take out, and dry for 15min at 260 ℃; the third drying is to put the twice dried tourmaline raw material into dimethylaminoethyl methacrylate, take out, and dry for 6min at 280 ℃.
The invention also provides a preparation method of the degradable non-woven fabric, which comprises the following steps:
Step 1, taking 25 parts of bagasse fibers, 42 parts of cotton fibers, 19 parts of wheat straw fibers and 14 parts of tourmaline fibers according to parts by weight, firstly adding the tourmaline fibers and the bagasse fibers into deionized water, uniformly stirring, then sequentially adding the cotton fibers and the wheat straw fibers, and uniformly stirring to form fiber slurry;
Step 2, adding polyvinyl alcohol into the fiber slurry, wherein the weight part ratio of the added polyvinyl alcohol to the fiber slurry is 1:20, adopting an electrostatic spinning process to obtain a non-woven fabric primary material, and then obtaining the antibacterial degradable soft towel after line pressing treatment and cutting.
Example III
The degradable non-woven fabric comprises the following components in parts by weight: 28 parts of bagasse fiber, 46 parts of cotton fiber, 20 parts of wheat straw fiber and 16 parts of tourmaline fiber.
Wherein:
The bagasse fiber is obtained by sequentially crushing bagasse by a crusher, screening by a screen, washing, drying, and then putting the dried bagasse into a solution of 1-butyl-3-methylimidazole chloride serving as a solvent medium to be covalently bonded with side chain groups of papain.
The cotton fiber is obtained by sequentially crushing raw cotton by a crusher, washing and drying; and the washing adopts essential oil and water with the weight ratio of 5:95 as a detergent.
The wheat straw fiber is obtained through cutting wheat straw, sieving, washing with water, drying, pre-hydrolyzing at 160 deg.c and liquid ratio of 1 to 5 under pressure of 1.4MPa, washing and bleaching.
The tourmaline fiber is obtained by adopting the following components in parts by weight: 4, dissolving chitosan in acetic acid solution with the mass fraction of 10% to decalcify, then defoaming and filtering the acetic acid solution, adding the filtered chitosan into sodium hydroxide solution to deproteinize, and controlling the concentration of sodium hydroxide to be 0.1mol/L; finally, the deproteinized chitosan is subjected to de-ethylation in the cleaning of acetic acid solution to form spinning solution in sodium acetate, and the modified tourmaline powder is put into the spinning solution and solidified into filaments by adopting calcium chloride to obtain the modified tourmaline powder.
It should be noted that the modified tourmaline powder is prepared by crushing tourmaline raw materials sequentially by a crusher, ball milling to 400 mesh, oven drying, air flow pulverizing, and air flow classifying, and has an average particle diameter of 149 μm. In the preparation method of the modified tourmaline powder, the adopted drying process is divided into primary drying, secondary drying and tertiary drying, wherein the primary drying is to put the tourmaline raw material processed by ball milling into alcohol and take out, and then dry for 10min at 220 ℃; the secondary drying is to put the tourmaline raw material which is dried once into deionized water, take out, and dry for 15min at 260 ℃; the third drying is to put the twice dried tourmaline raw material into dimethylaminoethyl methacrylate, take out, and dry for 6min at 280 ℃.
The invention also provides a preparation method of the degradable non-woven fabric, which comprises the following steps:
Step 1, taking 28 parts of bagasse fibers, 46 parts of cotton fibers, 20 parts of wheat straw fibers and 16 parts of tourmaline fibers according to parts by weight, firstly adding the tourmaline fibers and the bagasse fibers into deionized water, uniformly stirring, then sequentially adding the cotton fibers and the wheat straw fibers, and uniformly stirring to form fiber slurry;
Step 2, adding polyvinyl alcohol into the fiber slurry, wherein the weight ratio of the added polyvinyl alcohol to the fiber slurry is 4:55, obtaining a non-woven fabric primary material by adopting an electrostatic spinning process, and obtaining the antibacterial degradable soft towel after line pressing treatment and cutting.
Comparative example 1
In comparison with example 2, no bagasse fiber was added in comparative example 1.
Comparative example 2
Compared with example 2, no tourmaline fiber was added in comparative example 2.
Performance tests were performed on the degradable nonwovens of examples 1-3 and comparative examples 1-2, with the following test results:
Table I shows the results of the performance tests of examples 1-3 and comparative examples 1-2
In summary, as shown in table one, the tourmaline powder in the tourmaline fiber itself has the phenomenon of electric polarization by combining the bagasse fiber, the cotton fiber, the wheat straw fiber and the tourmaline fiber, so that the tourmaline fiber is in an unstable state that one end generates a positive electrode and the other end generates a negative electrode, thereby generating negative ions by ionizing moisture in the surrounding air after generating potential difference, and realizing the effect of remarkably improving the antibacterial function by emitting far infrared rays; the thermal stability of the degradable non-woven fabric is obviously improved by covalent bonds in bagasse fibers and papain, and the bagasse is mainly used for manufacturing, so that the degradable non-woven fabric has the characteristic of oil absorption, and the combination stability is obviously improved when the degradable non-woven fabric is combined with cotton fibers, wheat straw fibers and tourmaline fibers, and meanwhile, the reaction efficiency is obviously improved and the preparation period of the degradable non-woven fabric is shortened by using a chlorinated 1-butyl-3-methylimidazole solution as a solvent medium; through the combination of chitosan and modified tourmaline powder in the tourmaline fiber, the structural strength of the tourmaline fiber is improved, the influence on the environment is effectively avoided by the treatment process of the chitosan, the effects of sustainable development and simple process are achieved, and meanwhile, the chitosan has the effects of strong bacteriostasis and adsorption capacity, so that the non-woven fabric has the effect of effectively combining bagasse fiber, cotton fiber and straw fiber; meanwhile, through drying the tourmaline raw material for a plurality of times, and adopting alcohol, deionized water and dimethylaminoethyl methacrylate in the drying for a plurality of times, the temperature of each time is gradually increased so as to achieve the effect of quick drying, and when the alcohol is attached to the surface and the inner side of the tourmaline raw material, the effect of further cleaning the tourmaline surface is formed through drying, so that the retention of impurities is avoided; the deionized water is used for cleaning the interior of the tourmaline raw material, so that alcohol retention is avoided; after being dried, the dimethylaminoethyl methacrylate is combined with bagasse fibers, cotton fibers and wheat straw fibers to further improve the hydrophilicity, the adhesiveness and the thermosetting property of the degradable non-woven fabric.
The references to "first," "second," "third," "fourth," etc. (if present) are used to distinguish similar objects from each other and are not necessarily used to describe a particular order or sequence. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, or apparatus.
It should be noted that the description of "first", "second", etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implying an indication of the number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
The principles and embodiments of the present application have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present application and the core ideas thereof; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (7)
1. The degradable non-woven fabric is characterized by comprising the following components in parts by weight: 22-28 parts of bagasse fiber, 38-46 parts of cotton fiber, 18-20 parts of wheat straw fiber and 12-16 parts of tourmaline fiber; wherein:
The bagasse fiber is obtained by sequentially crushing bagasse by a crusher, screening by a screen, washing, drying, putting the dried bagasse into a chlorinated 1-butyl-3-methylimidazole solution serving as a solvent medium, and carrying out covalent bond combination with a side chain group of papain;
The tourmaline fiber is obtained by adopting the following components in parts by weight: 12, dissolving chitosan in acetic acid solution with the mass fraction of 10% to decalcify, then defoaming and filtering the acetic acid solution, adding the filtered chitosan into sodium hydroxide solution to deproteinize, and controlling the concentration of sodium hydroxide to be 0.1mol/L; finally, the deproteinized chitosan is subjected to de-ethylation in the cleaning of acetic acid solution to form spinning solution in sodium acetate, and the modified tourmaline powder is put into the spinning solution and solidified into filaments by adopting calcium chloride to obtain the modified tourmaline powder; the modified tourmaline powder is prepared by crushing tourmaline raw materials sequentially by a crusher, ball milling to 400 meshes, drying, air flow crushing and air flow classification, and has a particle size of 20-160 μm.
2. The degradable nonwoven fabric of claim 1, wherein: the cotton fiber is obtained by sequentially crushing, washing and drying raw cotton by a crusher; the washing adopts essential oil and water with a weight ratio of 5:95 as a detergent.
3. The degradable nonwoven fabric of claim 1, wherein: the wheat straw fiber is obtained by sequentially cutting, screening and washing wheat straw, drying, pre-hydrolyzing under the pressure of 1.2-1.4MPa, the temperature of 145-160 ℃ and the liquid ratio of 1:5, and washing and bleaching the hydrolyzed wheat straw.
4. The degradable nonwoven fabric of claim 1, wherein: the drying is divided into primary drying, secondary drying and tertiary drying, wherein the primary drying is to put the tourmaline raw material subjected to ball milling into alcohol, take out, and dry for 10min at 220 ℃; the secondary drying is to put the tourmaline raw material which is dried once into deionized water, take out, and dry for 15min at 260 ℃; the three times of drying are to put the twice-dried tourmaline raw material into dimethylaminoethyl methacrylate, take out, and dry for 6min at 280 ℃.
5. A process for preparing the degradable nonwoven fabric according to any one of claims 1-4, characterized by comprising the steps of:
Step 1, adding 22-28 parts of bagasse fibers, 38-46 parts of cotton fibers, 18-20 parts of wheat straw fibers and 12-16 parts of tourmaline fibers into deionized water according to parts by weight to form fiber slurry;
And step 2, adding polyvinyl alcohol into the fiber slurry, adopting an electrostatic spinning process to obtain a non-woven fabric primary material, and then carrying out line pressing treatment and cutting to obtain the antibacterial degradable soft towel.
6. The method for preparing the degradable non-woven fabric according to claim 5, wherein: in the step 1, tourmaline fibers and bagasse fibers are firstly added into deionized water, and cotton fibers and wheat straw fibers are sequentially added after uniform stirring so as to form fiber slurry.
7. The method for preparing the degradable non-woven fabric according to claim 5, wherein: in the step 2, the weight part ratio of the added polyvinyl alcohol to the fiber slurry is 3-8:90-110.
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