CN113481725A - Preparation method of medical antibacterial non-woven fabric - Google Patents
Preparation method of medical antibacterial non-woven fabric Download PDFInfo
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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
-
- 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
-
- 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
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- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
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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
- 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
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/207—Substituted carboxylic acids, e.g. by hydroxy or keto groups; Anhydrides, halides or salts 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
- 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
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
- D06M13/2246—Esters of unsaturated carboxylic acids
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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
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/368—Hydroxyalkylamines; Derivatives thereof, e.g. Kritchevsky bases
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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
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/18—Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/20—Polyalkenes, polymers or copolymers of compounds with alkenyl groups bonded to aromatic groups
Abstract
The invention discloses a preparation method of a medical antibacterial non-woven fabric, which comprises the following raw materials, by weight, 50-65 parts of polypropylene resin, 9-14 parts of 3, 4-dihydroxy-5-nitro-benzaldehyde, 7-11 parts of nano titanium dioxide, 10-16 parts of nano silver sol powder and 12-18 parts of polyethylene oxide. Extruding and melting at 180-185 ℃, performing stirring reaction for 1.5-3 h, performing spinning at the flow rate of 0.5-0.65 g/min, cooling to obtain fiber filaments, opening, carding and paving the fiber filaments into a fiber net, and then performing needling to obtain a non-woven fabric; adding chitosan, L-sodium lactate and dimethyl fumarate into deionized water, stirring to dissolve the chitosan, L-sodium lactate and dimethyl fumarate, immersing the non-woven fabric obtained in the step S1 into the liquid, shaking for 6-10 hours, taking out and drying, then immersing the non-woven fabric into clear water, adding O-carboxymethyl chitosan and dopamine, performing ultrasonic dissolution, adding a Tris-HCl buffer solution, adjusting the pH value, shaking for 2-4 hours, and performing vacuum drying to obtain the antibacterial non-woven fabric material.
Description
Technical Field
The invention belongs to the technical field of non-woven fabrics, and particularly relates to a preparation method of a medical antibacterial non-woven fabric.
Background
The non-woven fabric is a high-technology content in a flexible material production system, has wide market demand, relates to a wide-range modern material industry, develops at an astonishing speed, and is known as the 'sunward industry' in the textile industry. Although the non-woven fabrics produced by different processes have excellent effects in improving sanitary environment and facilitating use. However, human skin and clothes are places where bacteria grow, and the bacteria continuously propagate by taking human excrement such as urea in sweat as a nutrient source and simultaneously discharge ammonia with strong odor. Especially in hospitals, stations, markets, cinemas, public transport vehicles and other places, and living goods easy to breed bacteria, such as: rags, underwear, baby products, old people products, patient products and the like, and the common non-woven fabric can not effectively avoid the propagation infection and cross infection of bacteria. Nowadays, nonwoven fabrics have been used in various fields, particularly in the medical field, and therefore, new requirements for antimicrobial properties of nonwoven fabrics have been made.
Disclosure of Invention
The invention aims to provide a preparation method of medical antibacterial non-woven fabric, which comprises the following steps:
s1: uniformly mixing polypropylene resin, 3, 4-dihydroxy-5-nitro-benzaldehyde, nano titanium dioxide, nano silver sol powder and polyethylene oxide, then carrying out extrusion melting at 180-185 ℃, carrying out stirring reaction for 1.5-3 h, then carrying out spinning at the flow rate of 0.5-0.65 g/min, cooling to obtain fiber filaments, then opening, carding and laying the fiber filaments to obtain a fiber net, and then carrying out needling to obtain the non-woven fabric.
S2: adding chitosan, L-sodium lactate and dimethyl fumarate into deionized water, stirring to dissolve the chitosan, L-sodium lactate and dimethyl fumarate, immersing the non-woven fabric obtained in the step S1 into the liquid, shaking for 6-10 hours, taking out and drying, then immersing the non-woven fabric into clear water, adding O-carboxymethyl chitosan and dopamine, performing ultrasonic dissolution, adding a Tris-HCl buffer solution, adjusting the pH value, shaking for 2-4 hours, and performing vacuum drying to obtain the antibacterial non-woven fabric material.
Further, the raw materials in the step S1 include, by weight, 50-65 parts of polypropylene resin, 9-14 parts of 3, 4-dihydroxy-5-nitro-benzaldehyde, 7-11 parts of nano titanium dioxide, 10-16 parts of nano silver sol powder, and 12-18 parts of polyethylene oxide.
Further, the nano silver sol is prepared by the following preparation method: dissolving silver nitrate in water to prepare a silver nitrate solution, adding polyvinylpyrrolidone, uniformly mixing, dropwise adding a sodium borohydride solution, continuously stirring for 1-2 hours to obtain a nano-silver sol, standing for 12-20 hours, freeze-drying by liquid nitrogen, and grinding for 10-30 min to obtain nano-silver sol powder; wherein the mass ratio of the silver nitrate, the polyvinylpyrrolidone and the sodium borohydride is 1 (1.2-1.5) to 0.1-0.5.
Furthermore, the mass ratio of the chitosan, the sodium L-lactate and the dimethyl fumarate is (1-2): (1.32-1.69): 1.22-1.84.
Furthermore, the mass ratio of the O-carboxymethyl chitosan to the dopamine is (0.96-1.44): (1.69-2.28).
Further, in the step S2, the pH value is adjusted to 10.6-11.8.
Compared with the prior art, the invention has the following beneficial effects: in the invention, raw materials of 50-65 parts of polypropylene resin, 9-14 parts of 3, 4-dihydroxy-5-nitro-benzaldehyde, 7-11 parts of nano titanium dioxide, 10-16 parts of nano silver sol powder and 12-18 parts of polyethylene oxide are adopted, a fiber net is prepared by spinning, opening, carding and paving, a non-woven fabric is prepared by needling, then chitosan, L-sodium lactate and dimethyl fumarate are added into deionized water, the non-woven fabric is immersed into the liquid, the non-woven fabric is shaken for 6-10 h and then fished out and dried, then the non-woven fabric is immersed into clear water, O-carboxymethyl chitosan and dopamine are added for ultrasonic dissolution, then Tris-HCl buffer solution is added, the pH value is adjusted, the shaking is carried out for 2-4 h, and vacuum drying is carried out to obtain the antibacterial non-woven fabric material, and the obtained antibacterial non-woven fabric material has excellent antibacterial effect, and the antibacterial effect is relatively durable, and the antibacterial agent also has good mechanical properties.
Detailed Description
The following embodiments of the present invention are described in detail, and the embodiments are implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Example 1
A preparation method of medical antibacterial non-woven fabric specifically comprises the following steps:
s1: uniformly mixing polypropylene resin, 3, 4-dihydroxy-5-nitro-benzaldehyde, nano titanium dioxide, nano silver sol powder and polyethylene oxide, then extruding and melting at 180 ℃, carrying out stirring reaction for 1.5h, then carrying out spinning at the flow rate of 0.5g/min, cooling to obtain fiber filaments, then opening, carding and laying the fiber filaments into a fiber net, and then carrying out needling to obtain a non-woven fabric; wherein the polypropylene resin comprises 50 parts of polypropylene resin, 9 parts of 3, 4-dihydroxy-5-nitro-benzaldehyde, 7 parts of nano titanium dioxide, 10 parts of nano silver sol powder and 12 parts of polyethylene oxide.
S2: adding chitosan, L-sodium lactate and dimethyl fumarate into deionized water, stirring to dissolve the chitosan, L-sodium lactate and dimethyl fumarate, immersing the non-woven fabric obtained in the step S1 into the liquid, shaking and shaking for 6 hours, taking out and drying, then immersing the non-woven fabric into clear water, adding O-carboxymethyl chitosan and dopamine, performing ultrasonic dissolution, adding Tris-HCl buffer solution, adjusting the pH value, shaking and shaking for 2 hours, and performing vacuum drying to obtain the antibacterial non-woven fabric material; wherein the mass ratio of the chitosan to the sodium L-lactate to the dimethyl fumarate is 1:1.32: 1.22; the mass ratio of the O-carboxymethyl chitosan to the dopamine is 0.96: 1.69; the pH was adjusted to 10.6.
The preparation method of the nano silver sol comprises the following steps: dissolving silver nitrate in water to prepare a silver nitrate solution, then adding polyvinylpyrrolidone, uniformly mixing, dropwise adding a sodium borohydride solution, continuously stirring for 1h to obtain a nano-silver sol, standing for 12h, then freeze-drying by liquid nitrogen, and grinding for 10min to obtain nano-silver sol powder; wherein the mass ratio of the silver nitrate to the polyvinylpyrrolidone to the sodium borohydride is 1:1.2: 0.1.
Example 2
A preparation method of medical antibacterial non-woven fabric specifically comprises the following steps:
s1: uniformly mixing polypropylene resin, 3, 4-dihydroxy-5-nitro-benzaldehyde, nano titanium dioxide, nano silver sol powder and polyethylene oxide, then extruding and melting at 185 ℃, carrying out stirring reaction for 3 hours, then carrying out spinning at the flow rate of 0.65g/min, cooling to obtain fiber filaments, then opening, carding and laying the fiber filaments into a fiber net, and then carrying out needling to obtain a non-woven fabric; wherein 65 parts of polypropylene resin, 14 parts of 3, 4-dihydroxy-5-nitro-benzaldehyde, 11 parts of nano titanium dioxide, 16 parts of nano silver sol powder and 18 parts of polyethylene oxide.
S2: adding chitosan, L-sodium lactate and dimethyl fumarate into deionized water, stirring to dissolve the chitosan, L-sodium lactate and dimethyl fumarate, immersing the non-woven fabric obtained in the step S1 into the liquid, shaking for 10 hours, taking out and drying, then immersing the non-woven fabric into clear water, adding O-carboxymethyl chitosan and dopamine, performing ultrasonic dissolution, adding Tris-HCl buffer solution, adjusting the pH value, shaking for 4 hours, and performing vacuum drying to obtain the antibacterial non-woven fabric material; wherein the mass ratio of the chitosan to the sodium L-lactate to the dimethyl fumarate is 2:1.69: 1.84; the mass ratio of the O-carboxymethyl chitosan to the dopamine is 1.44: 2.28; the pH was adjusted to 11.8.
The preparation method of the nano silver sol comprises the following steps: dissolving silver nitrate in water to prepare a silver nitrate solution, then adding polyvinylpyrrolidone, uniformly mixing, dropwise adding a sodium borohydride solution, continuously stirring for 2 hours to obtain a nano-silver sol, standing for 20 hours, then freeze-drying by liquid nitrogen, and grinding for 30min to obtain nano-silver sol powder; wherein the mass ratio of the silver nitrate to the polyvinylpyrrolidone to the sodium borohydride is 1:1.5: 0.5.
Example 3
A preparation method of medical antibacterial non-woven fabric specifically comprises the following steps:
s1: uniformly mixing polypropylene resin, 3, 4-dihydroxy-5-nitro-benzaldehyde, nano titanium dioxide, nano silver sol powder and polyethylene oxide, then extruding and melting at 182 ℃, carrying out stirring reaction for 2 hours, then carrying out spinning at the flow rate of 0.55g/min, cooling to obtain fiber filaments, then opening, carding and laying the fiber filaments into a fiber net, and then carrying out needling to obtain a non-woven fabric; 55 parts of polypropylene resin, 11 parts of 3, 4-dihydroxy-5-nitro-benzaldehyde, 8 parts of nano titanium dioxide, 12 parts of nano silver sol powder and 14 parts of polyethylene oxide.
S2: adding chitosan, L-sodium lactate and dimethyl fumarate into deionized water, stirring to dissolve the chitosan, L-sodium lactate and dimethyl fumarate, immersing the non-woven fabric obtained in the step S1 into the liquid, shaking and shaking for 8 hours, taking out and drying, then immersing the non-woven fabric into clear water, adding O-carboxymethyl chitosan and dopamine, performing ultrasonic dissolution, adding a Tris-HCl buffer solution, adjusting the pH value, shaking and shaking for 3 hours, and performing vacuum drying to obtain the antibacterial non-woven fabric material; wherein the mass ratio of the chitosan to the sodium L-lactate to the dimethyl fumarate is 1.2:1.46: 1.49; the mass ratio of the O-carboxymethyl chitosan to the dopamine is 1.18: 1.96; the pH was adjusted to 10.9.
The preparation method of the nano silver sol comprises the following steps: dissolving silver nitrate in water to prepare a silver nitrate solution, then adding polyvinylpyrrolidone, uniformly mixing, dropwise adding a sodium borohydride solution, continuously stirring for 1.5h to obtain a nano-silver sol, standing for 15h, freeze-drying by liquid nitrogen, and grinding for 20min to obtain nano-silver sol powder; wherein the mass ratio of the silver nitrate to the polyvinylpyrrolidone to the sodium borohydride is 1:1.3: 0.3.
Example 4
A preparation method of medical antibacterial non-woven fabric specifically comprises the following steps:
s1: uniformly mixing polypropylene resin, 3, 4-dihydroxy-5-nitro-benzaldehyde, nano titanium dioxide, nano silver sol powder and polyethylene oxide, then extruding and melting at 184 ℃, carrying out stirring reaction for 2.5 hours, then carrying out spinning at the flow rate of 0.6g/min, cooling to obtain fiber filaments, then opening, carding and laying the fiber filaments into a fiber net, and then carrying out needling to obtain a non-woven fabric; wherein the polypropylene resin comprises 60 parts of polypropylene resin, 13 parts of 3, 4-dihydroxy-5-nitro-benzaldehyde, 10 parts of nano titanium dioxide, 14 parts of nano silver sol powder and 16 parts of polyethylene oxide.
S2: adding chitosan, L-sodium lactate and dimethyl fumarate into deionized water, stirring to dissolve the chitosan, L-sodium lactate and dimethyl fumarate, immersing the non-woven fabric obtained in the step S1 into the liquid, shaking and shaking for 9 hours, taking out and drying, then immersing the non-woven fabric into clear water, adding O-carboxymethyl chitosan and dopamine, performing ultrasonic dissolution, adding a Tris-HCl buffer solution, adjusting the pH value, shaking and shaking for 3 hours, and performing vacuum drying to obtain the antibacterial non-woven fabric material; wherein the mass ratio of the chitosan to the sodium L-lactate to the dimethyl fumarate is 1.6:1.58: 1.73; the mass ratio of the O-carboxymethyl chitosan to the dopamine is 1.36: 2.06; the pH was adjusted to 11.5.
The preparation method of the nano silver sol comprises the following steps: dissolving silver nitrate in water to prepare a silver nitrate solution, then adding polyvinylpyrrolidone, uniformly mixing, dropwise adding a sodium borohydride solution, continuously stirring for 2 hours to obtain a nano-silver sol, standing for 18 hours, then freeze-drying by liquid nitrogen, and grinding for 25min to obtain nano-silver sol powder; wherein the mass ratio of the silver nitrate to the polyvinylpyrrolidone to the sodium borohydride is 1:1.4: 0.42.
Comparative example 1
Commercially available polypropylene resin is used as a raw material for the nonwoven fabric.
Performance testing: (1) the antibacterial performance detection takes staphylococcus aureus as a test microorganism, the antibacterial performance detection is respectively carried out on the non-woven fabrics obtained in the embodiments 1-4 and the comparative example 1 according to GB/T20944.3, the non-woven fabric in the comparative example 1 is taken as a blank control, the antibacterial performance of each group is calculated, the non-woven fabrics are washed for 3 times, the antibacterial performance of the non-woven fabrics is detected, the antibacterial rate is (the viable bacteria concentration after the blank control group is contacted with the bacteria for culturing for 18 h-the viable bacteria concentration after the non-woven fabrics are contacted with the bacterial colony for culturing for 18 h)/the viable bacteria concentration after the blank control group is contacted with the bacteria for culturing for 18h is multiplied by 100%, and the test results are shown in Table 1,
table 1. test results:
as can be seen from table 1, the antibacterial nonwoven fabrics prepared in examples 1 to 4 of the present invention have excellent antibacterial effects, and the antibacterial rates after three times of washing are all 96.1% or more.
(2) The results of mechanical strength tests of the nonwoven fabric materials prepared in examples 1 to 4 are shown in Table 2,
table 2. test results:
as can be seen from Table 2, the nonwoven fabrics prepared in examples 1 to 4 have good mechanical strength.
Claims (6)
1. The preparation method of the medical antibacterial non-woven fabric is characterized by comprising the following steps:
s1: uniformly mixing polypropylene resin, 3, 4-dihydroxy-5-nitro-benzaldehyde, nano titanium dioxide, nano silver sol powder and polyethylene oxide, then carrying out extrusion melting at 180-185 ℃, carrying out stirring reaction for 1.5-3 h, then carrying out spinning at the flow rate of 0.5-0.65 g/min, cooling to obtain fiber filaments, then opening, carding and laying the fiber filaments to obtain a fiber net, and then carrying out needling to obtain a non-woven fabric;
s2: adding chitosan, L-sodium lactate and dimethyl fumarate into deionized water, stirring to dissolve the chitosan, L-sodium lactate and dimethyl fumarate, immersing the non-woven fabric obtained in the step S1 into the liquid, shaking for 6-10 hours, taking out and drying, then immersing the non-woven fabric into clear water, adding O-carboxymethyl chitosan and dopamine, performing ultrasonic dissolution, adding a Tris-HCl buffer solution, adjusting the pH value, shaking for 2-4 hours, and performing vacuum drying to obtain the antibacterial non-woven fabric material.
2. The method for preparing the medical antibacterial non-woven fabric according to claim 1, wherein the raw materials in the step S1 comprise, by weight, 50-65 parts of polypropylene resin, 9-14 parts of 3, 4-dihydroxy-5-nitro-benzaldehyde, 7-11 parts of nano titanium dioxide, 10-16 parts of nano silver sol powder and 12-18 parts of polyethylene oxide.
3. The method for preparing the medical antibacterial non-woven fabric according to claim 1, wherein the nano silver sol is prepared by the following steps: dissolving silver nitrate in water to prepare a silver nitrate solution, adding polyvinylpyrrolidone, uniformly mixing, dropwise adding a sodium borohydride solution, continuously stirring for 1-2 hours to obtain a nano-silver sol, standing for 12-20 hours, freeze-drying by liquid nitrogen, and grinding for 10-30 min to obtain nano-silver sol powder; wherein the mass ratio of the silver nitrate, the polyvinylpyrrolidone and the sodium borohydride is 1 (1.2-1.5) to 0.1-0.5.
4. The method for preparing the medical antibacterial non-woven fabric according to claim 1, wherein the mass ratio of the chitosan to the sodium L-lactate to the dimethyl fumarate is (1-2) to (1.32-1.69) to (1.22-1.84).
5. The method for preparing the medical antibacterial non-woven fabric according to claim 1, wherein the mass ratio of the O-carboxymethyl chitosan to the dopamine is (0.96-1.44) to (1.69-2.28).
6. The method for preparing the medical antibacterial non-woven fabric according to claim 1, wherein the pH value is adjusted to 10.6-11.8 in the step S2.
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| CN112680877A (en) * | 2020-11-27 | 2021-04-20 | 浙江雅宝无纺布制品有限公司 | Antibacterial non-woven fabric and preparation process thereof |
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2021
- 2021-07-23 CN CN202110840956.2A patent/CN113481725A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101731272A (en) * | 2009-12-24 | 2010-06-16 | 中国人民解放军军事医学科学院基础医学研究所 | Method for preparing antibacterial nanometer silver colloid |
| CN102268784A (en) * | 2011-06-17 | 2011-12-07 | 北京化工大学常州先进材料研究院 | Preparation of porous natural polymer nanofiber non-woven fabric |
| CN106729943A (en) * | 2016-11-24 | 2017-05-31 | 阜阳市汇康医疗器械有限公司 | A kind of medical cotton stick of long acting antibiotic analgesia promoting healing |
| CN109023967A (en) * | 2018-07-13 | 2018-12-18 | 合肥洁诺医疗用品有限公司 | A kind of preparation method for the non-woven fabrics coating antibacterial film |
| CN112680877A (en) * | 2020-11-27 | 2021-04-20 | 浙江雅宝无纺布制品有限公司 | Antibacterial non-woven fabric and preparation process thereof |
| CN112587734A (en) * | 2020-12-15 | 2021-04-02 | 济南金泉生物科技有限公司 | Multifunctional coating based on bionic dopamine and preparation method and application thereof |
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