CN115652627A - Copper ion antibacterial hemp fiber and fabric preparation method - Google Patents
Copper ion antibacterial hemp fiber and fabric preparation method Download PDFInfo
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- CN115652627A CN115652627A CN202211357510.5A CN202211357510A CN115652627A CN 115652627 A CN115652627 A CN 115652627A CN 202211357510 A CN202211357510 A CN 202211357510A CN 115652627 A CN115652627 A CN 115652627A
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- 239000000835 fiber Substances 0.000 title claims abstract description 125
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 102
- 244000025254 Cannabis sativa Species 0.000 title claims abstract description 84
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 title claims abstract description 84
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 title claims abstract description 84
- 235000009120 camo Nutrition 0.000 title claims abstract description 84
- 235000005607 chanvre indien Nutrition 0.000 title claims abstract description 84
- 239000011487 hemp Substances 0.000 title claims abstract description 84
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 229910001431 copper ion Inorganic materials 0.000 title claims abstract description 60
- 239000004744 fabric Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 229920000768 polyamine Polymers 0.000 claims abstract description 35
- 238000002791 soaking Methods 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 239000000243 solution Substances 0.000 claims description 31
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 9
- 125000000524 functional group Chemical group 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 7
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 7
- 230000007935 neutral effect Effects 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- -1 C1-C9 alkyl Chemical group 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- 239000012670 alkaline solution Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 3
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 3
- OPQARKPSCNTWTJ-UHFFFAOYSA-L copper(ii) acetate Chemical compound [Cu+2].CC([O-])=O.CC([O-])=O OPQARKPSCNTWTJ-UHFFFAOYSA-L 0.000 claims description 3
- YRNNKGFMTBWUGL-UHFFFAOYSA-L copper(ii) perchlorate Chemical compound [Cu+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O YRNNKGFMTBWUGL-UHFFFAOYSA-L 0.000 claims description 3
- QBPPRVHXOZRESW-UHFFFAOYSA-N 1,4,7,10-tetraazacyclododecane Chemical compound C1CNCCNCCNCCN1 QBPPRVHXOZRESW-UHFFFAOYSA-N 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 230000000845 anti-microbial effect Effects 0.000 claims description 2
- 230000029219 regulation of pH Effects 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 230000001476 alcoholic effect Effects 0.000 claims 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims 1
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 12
- 239000004753 textile Substances 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 229920000728 polyester Polymers 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 2
- 229920002821 Modacrylic Polymers 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 239000013522 chelant Substances 0.000 description 2
- 230000009920 chelation Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001493 electron microscopy Methods 0.000 description 1
- CBOIHMRHGLHBPB-UHFFFAOYSA-N hydroxymethyl Chemical compound O[CH2] CBOIHMRHGLHBPB-UHFFFAOYSA-N 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Abstract
The invention discloses a copper ion antibacterial hemp fiber and a preparation method of a fabric thereof. Treating hemp fibers with a macrocyclic polyamine and a derivative thereof to obtain polyamine-treated hemp fibers by an inter-functional reaction; soaking the hemp fiber treated by polyamine in a copper ion solution to obtain copper ion antibacterial hemp fiber; and (3) blending the copper ion antibacterial hemp fiber with other fibers to prepare copper-containing blended fiber, and finally preparing the fabric from the copper-containing blended fiber. According to the invention, the antibacterial fiber and the fiber are blended according to the weight percentage, and finally the copper ion antibacterial fabric is woven, so that the preparation process is simple, convenient and efficient, green and pollution-free, the antibacterial duration of the fiber and the fabric is long, and the antibacterial effect reaches more than 99%.
Description
Technical Field
The invention relates to a preparation method of novel antibacterial fibers, in particular to a preparation method of copper ion antibacterial hemp fibers and fabrics.
Background
With the frequent public safety incidents, the pursuit for a safe and comfortable living environment is higher and higher, and the antimicrobial textile products are also more and more valued. The antibacterial function of the textile fabric is realized by 5 approaches: the antibacterial fabric is prepared from natural antibacterial fibers, regenerated antibacterial fibers, synthetic antibacterial fibers, modified antibacterial fibers and an antibacterial finishing agent. The regenerated antibacterial fiber and the synthetic antibacterial fiber need to be prepared from the fiber raw stock, the process is long, and the preparation process is not green enough.
Disclosure of Invention
In order to solve the problems in the background art and solve the problem that the prior art cannot ensure a lasting and effective antibacterial effect by adopting an antibacterial finishing agent, the invention provides a preparation method of copper ion antibacterial hemp fibers and fabrics.
In order to achieve the above object, the technical solution of the present invention comprises the steps of:
treating the hemp fiber with macrocyclic polyamine and derivatives thereof to form stable chemical bonds through reaction between functional groups to obtain polyamine-treated hemp fiber;
soaking the hemp fiber treated by polyamine in a copper ion solution to obtain copper ion antibacterial hemp fiber;
the copper-ion antibacterial hemp fiber is blended with other fibers to prepare copper-containing blended fiber, and finally the copper-containing blended fiber is prepared into fabric, so that the antibacterial effect reaches over 99.0 percent.
The invention forms stable chemical bond through the reaction between functional groups to obtain hemp fiber treated by polyamine, and then forms fiber with stable antibacterial ability by chelating with copper ions.
The polyamine-treated hemp fiber is characterized in that:
the hemp fiber is soaked in 1-6 wt% concentration macrocyclic polyamine solution at 20-60 deg.c for 2-12 hr, pH regulated to neutrality, and the soaked hemp fiber is washed in alcohol water solution and dried.
The macrocyclic polyamine and the derivatives thereof are specifically 1,4,7, 10-tetraazacyclododecane and derivatives thereof, and the structural formula is as follows:
wherein the functional group R is selected from hydrogen, C1-C9 alkyl, carboxyl, hydroxyl, C1-C4 carboxylic alkyl, C1-C4 alcohol alkyl CH 2 CH(OH)CH 3 C1-C4 alkyl phosphonic acid CH 2 PO(OH) 2 Etc.; CH (CH) 2 COOH,CH 2 PO(OH) 2, CH 2 CH(OH)CH 3, CH 2 CH2OH,CH 2 COOH, COOH is preferably selected from C1-C2 carboxyl, C1-C3 hydroxyl.
The functional group R' is selected from hydrogen, C1-C4 carboxylic acids, etc., preferably hydrogen H.
The alkali treatment is characterized in that:
dispersing hemp fiber, soaking in water, and squeezing for several times to remove impurities and soluble substances on the surface of the fiber;
naturally airing, soaking in an alkaline solution for 6 d-24 h at the temperature of 20-60 ℃, then washing with water until the pH is neutral, then completely cleaning in an ethanol aqueous solution of 1.
The alkaline solution comprises 1.0-10 wt.% of aqueous solution or ethanol solution of NaOH, KOH and the like; preferably 5% wt.% NaOH aqueous solution.
The macrocyclic polyamine solution is dissolved in dichloromethane according to weight fraction.
The regulator used in the pH regulation is sodium carbonate or sodium bicarbonate.
The ethanol water solution preferably has a volume fraction of 1.
The method for immersing the polyamine-treated hemp fiber in a copper ion solution, namely a copper ion chelation process, is characterized in that:
the copper ion solution is a divalent copper ion solution, and comprises copper perchlorate, copper chloride, copper nitrate, copper sulfate, copper acetate and the like.
The hemp fiber treated by polyamine is dipped in 1.0 to 10 weight percent of Cu (II) solution such as copper perchlorate, copper chloride, copper nitrate, copper sulfate, copper acetate and the like, the pH value is adjusted to 4.0 to 10.0, and the mixture is stirred for 2 to 12 hours.
Such other fibers include, but are not limited to, polyester, viscose, cotton, aramid, modacrylic, and the like.
And (2) blending the copper ion hemp fiber with other fibers such as but not limited to terylene, viscose fiber, cotton, aramid fiber, modacrylic and the like according to parts by weight, and weaving cloth to obtain the copper ion antibacterial fabric.
The preparation process of the copper-containing blend fiber comprises the following specific steps: the copper ion antibacterial hemp fiber and other fibers are blended according to the weight ratio of 30-90 to 70-10. Therefore, the antibacterial fiber and the fiber are blended according to the weight percentage, and the copper-containing blended fiber is woven into the copper ion antibacterial fabric, and the antibacterial effect reaches more than 99.0 percent.
The invention disperses hemp fiber, then carries on pretreatment in alkali liquor to remove impurity, soaks in macrocyclic polyamine solution after drying, uses a large amount of functional groups on hemp fiber surface to react with macrocyclic polyamine functional groups, then carries on chelation reaction with copper ion, forms copper ion antibiotic hemp fiber.
According to the invention, the hemp fibers with good antibacterial effect are chelated with the copper ions, so that the synergistic effect of the hemp fibers and the copper ions can be fully exerted, and good antibacterial property is achieved. The hemp is a cellulose fiber, contains a large amount of hydroxyl and carboxyl, macrocyclic polyamine is used as an intermediate adhesive to react with the hemp fiber and chelate copper ions, and the hemp fiber has a large amount of cavity structures, so that a large amount of macrocyclic polyamine and copper ion chelate are stored, the fiber has higher antibacterial property, the hemp fiber containing copper ions is blended with other fibers, and finally, the antibacterial fabric is prepared to meet the antibacterial requirement.
The invention has the beneficial effects that:
1) The method for preparing the copper ion antibacterial hemp fiber is simple and efficient, has safe process, and is obviously superior to the method for performing antibacterial modification from virgin pulp fiber;
2) After being chelated with the macrocyclic polyamine, the copper ions can be stored in a large amount in the cavity of the hemp fiber, and the antibacterial effect is improved;
3) The antibacterial fiber and the fiber are blended according to the weight percentage, and finally the copper ion antibacterial fabric is woven, so that the copper ion addition amount is small, the antibacterial duration of the fabric is long, the antibacterial effect reaches more than 99.0 percent, and the requirement is met.
Compared with the prior art, the preparation process is simple, convenient and efficient, green and pollution-free, and the antibacterial duration of the fiber and the fabric is long.
Drawings
Fig. 1 is an electron microscope image of copper ion hemp fiber of the present invention at different microscopic sizes.
Detailed Description
The test methods used in the following examples are all conventional methods unless otherwise specified.
Materials, reagents and the like described in the following examples are commercially available unless otherwise specified. Parts are calculated as mass ratios unless otherwise specified.
The examples of the invention are as follows:
example 1:
dispersing hemp fiber, soaking in water, and extruding for several times to remove impurities and soluble substances on the fiber surface. Then, the mixture was naturally dried, soaked in a 5-percent NaOH solution at 40 ℃ for 12 hours, and then washed with pure water to neutrality. Immersing hemp fibers in a 3% solution of a macrocyclic polyamine in methylene chloride, the macrocyclic polyamine having the formula:
after stirring at 40 ℃ for 6h, naHCO was used 3 Adjusting the pH value of the system to be neutral, then completely washing in an ethanol water solution with the volume fraction of 1. Soaking polyamine-treated hemp fiber in 5% copper chloride solutionAnd adjusting the pH value to 6.0-7.0, and stirring for 6h to obtain the copper ion antibacterial hemp fiber. The product results are shown in FIG. 1 by electron microscopy at various microscopic dimensions.
The antibacterial effect of the copper ion antibacterial hemp fiber is determined by referring to the evaluation standard of the antibacterial performance of GB/T20944.2-2007 textile, and the test result shows that the antibacterial rate is more than 99%, and the antibacterial hemp fiber has a good antibacterial effect. The antibacterial effect was determined again after multiple washes, still >99%. 25 parts of copper ion antibacterial hemp fiber and 75 parts of polyester fiber are blended to prepare a blended fabric, the antibacterial effect of the copper ion antibacterial hemp fiber is measured according to the evaluation standard of the antibacterial performance of GB/T20944.2-2007 textiles, and the test result shows that the antibacterial rate is more than 99%, and the blended fabric has a good antibacterial effect.
Example 2:
dispersing hemp fiber, soaking in water, and squeezing for several times to remove impurities and soluble substances on the fiber surface. Then, the mixture was naturally dried, soaked in a 5-percent NaOH solution at 40 ℃ for 12 hours, and then washed with pure water to neutrality. Immersing hemp fibers in a 1% solution of a macrocyclic polyamine in methylene chloride, the macrocyclic polyamine having the formula:
after stirring at 40 ℃ for 6h, naHCO was used 3 Adjusting the pH value of the system to be neutral, then completely cleaning the system in ethanol water solution with the volume fraction of 1. And soaking the hemp fiber treated by polyamine in a 5% copper chloride solution, adjusting the pH value to 6.0-7.0, and stirring for 6h to obtain the copper ion antibacterial hemp fiber.
The antibacterial effect of the copper ion antibacterial hemp fiber is determined by referring to the evaluation standard of the antibacterial performance of GB/T20944.2-2007 textiles, and the test result shows that the antibacterial rate is 99%, and the antibacterial hemp fiber has a good antibacterial effect. The antibacterial effect was measured again after washing many times and was still 99%. 30 parts of copper ion antibacterial hemp fibers and 70 parts of polyester fibers are blended to prepare blended fabric, the antibacterial effect of the copper ion antibacterial hemp fibers is measured according to the evaluation standard of the antibacterial performance of GB/T20944.2-2007 textiles, and the test result shows that the antibacterial rate is more than 99%, and the blended fabric has a good antibacterial effect.
Example 3:
dispersing hemp fiber, soaking in water, and squeezing for several times to remove impurities and soluble substances on the fiber surface. Then, the mixture was naturally dried, soaked in a 5-percent NaOH solution at 40 ℃ for 12 hours, and then washed with pure water to neutrality. Immersing hemp fibers in a 6% solution of a macrocyclic polyamine in methylene chloride, the macrocyclic polyamine having the formula:
after stirring at 40 ℃ for 6h, naHCO was used 3 Adjusting the pH value of the system to be neutral, then completely washing in an ethanol water solution with the volume fraction of 1. And soaking the hemp fiber treated by polyamine in a 5% copper chloride solution, adjusting the pH value to 6.0-7.0, and stirring for 6h to obtain the copper ion antibacterial hemp fiber.
The antibacterial effect of the copper ion antibacterial hemp fiber is determined by referring to the evaluation standard of the antibacterial performance of GB/T20944.2-2007 textile, and the test result shows that the antibacterial rate is more than 99%, and the antibacterial hemp fiber has a good antibacterial effect. The antibacterial effect was determined again after multiple washes, still >99%. 20 parts of copper ion antibacterial hemp fibers and 80 parts of polyester fibers are blended to prepare blended fabric, the antibacterial effect of the copper ion antibacterial hemp fibers is measured according to the evaluation standard of the antibacterial performance of GB/T20944.2-2007 textiles, and the test result shows that the antibacterial rate is more than 99%, and the blended fabric has a good antibacterial effect.
Comparative example 1:
dispersing hemp fiber, soaking in water, and squeezing for several times to remove impurities and soluble substances on the fiber surface. Then, the mixture was naturally dried, soaked in a 5-percent NaOH solution at 40 ℃ for 12 hours, and then washed to neutrality with pure water and dried. Soaking the alkali-treated hemp fiber in 5% copper chloride solution, adjusting the pH value to 6.0-7.0, and stirring for 6h to obtain the hemp fiber soaked by copper ions. The antibacterial effect of the hemp fiber soaked in the copper ion is determined by referring to the evaluation standard of the antibacterial performance of GB/T20944.2-2007 textile, and the test result shows that the antibacterial rate is 98%, and the antibacterial effect is achieved. After multiple water washes, the antibacterial effect was determined to be only 90%.
Claims (9)
1. A preparation method of copper ion antibacterial hemp fiber is characterized in that:
treating hemp fibers with a macrocyclic polyamine and a derivative thereof to obtain polyamine-treated hemp fibers by an inter-functional reaction;
and (3) soaking the hemp fiber treated by polyamine in a copper ion solution to obtain the copper ion antibacterial hemp fiber.
2. The method for preparing copper ion antibacterial hemp fiber according to claim 1, characterized in that:
obtaining polyamine-treated hemp fibres, in particular
The hemp fiber is soaked in macrocyclic polyamine solution with the concentration of 1-6% by weight after alkali treatment in advance, and after stirring for 2-12 h at the temperature of 20-60 ℃, the pH value is adjusted to be neutral, and then the hemp fiber is completely cleaned in ethanol water solution and dried.
3. The method for preparing copper ion antibacterial hemp fiber according to claim 1 or 2, characterized in that:
the macrocyclic polyamine and the derivatives thereof are specifically 1,4,7, 10-tetraazacyclododecane and derivatives thereof, and the structural formula is as follows:
wherein the functional group R is selected from hydrogen, C1-C9 alkyl, carboxyl, hydroxyl, C1-C4 carboxylic alkyl, C1-C4 alcohol alkyl CH 2 CH(OH)CH 3 C1-C4 alkyl phosphonic acid CH 2 PO(OH) 2 Etc.;
the functional group R' is selected from hydrogen, C1-C4 carboxylic acid and the like.
4. The method for preparing copper ion antibacterial hemp fiber according to claim 2, characterized in that:
the alkali treatment specifically comprises the following steps:
dispersing hemp fiber, soaking in water, and squeezing for several times to remove impurities and soluble substances on the surface of the fiber;
naturally airing, soaking in an alkaline solution for 6 d-24 h at the temperature of 20-60 ℃, then washing with water until the pH is neutral, then completely cleaning in an ethanol aqueous solution of 1.
5. The method for preparing copper ion antibacterial hemp fiber according to claim 4, characterized in that:
the alkaline solution comprises 1.0-10 wt.% aqueous or alcoholic solution of NaOH, KOH, etc.
6. The method for preparing copper ion antibacterial hemp fiber according to claim 2, characterized in that:
the regulator used in the pH regulation is sodium carbonate or sodium bicarbonate.
7. The method for preparing copper ion antibacterial hemp fiber according to claim 2, characterized in that:
the method comprises the following steps of (1) soaking the hemp fiber treated by polyamine in a copper ion solution:
immersing hemp fiber treated by polyamine in 1.0-10 wt.% Cu (II) solution such as copper perchlorate, copper chloride, copper nitrate, copper sulfate and copper acetate, adjusting pH to 4.0-10.0, and stirring for 2-12 h.
8. The copper ion antibacterial hemp fiber is characterized in that:
the preparation process according to any one of claims 1 to 7.
9. A copper ion antibacterial hemp fabric is characterized in that:
blending the copper ion antimicrobial hemp fiber of claim 8 with other fibers to produce a copper-containing blend fiber, and finally forming a fabric from the copper-containing blend fiber.
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