CN108993167A - A kind of preparation and application of the Electrospun nano-fibers air filting material of antibacterial - Google Patents
A kind of preparation and application of the Electrospun nano-fibers air filting material of antibacterial Download PDFInfo
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- CN108993167A CN108993167A CN201810913718.8A CN201810913718A CN108993167A CN 108993167 A CN108993167 A CN 108993167A CN 201810913718 A CN201810913718 A CN 201810913718A CN 108993167 A CN108993167 A CN 108993167A
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- polyvinyl alcohol
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
- A41D13/1153—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a hood
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1192—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with antimicrobial agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0006—Organic membrane manufacture by chemical reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/30—Cross-linking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/39—Electrospinning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/48—Antimicrobial properties
Abstract
The invention discloses the preparations and application of composite antibacterial Electrospun nano-fibers film, the present invention is used for mask antibacterial air-filtering material, the material uses polyvinyl alcohol, chitosan and vinyl amine-copolymerization -3- allyl -5,5- Dimethyl Hydan is raw material, preparation method is that polyvinyl alcohol and chitosan are uniformly mixed spinning as innermost layer and outermost layer nano fibrous membrane, plays the role of assisting antibacterial action and mechanical support.Middle layer is polyvinyl alcohol and vinyl amine-copolymerization -3- allyl -5,5- Dimethyl Hydan blend spinning, plays main antibacterial action.Three layers of nano fibrous membrane that spinning is completed are placed in glutaraldehyde steam and carry out crosslinking Treatment.Preparation method is simple by the present invention, and condition is controllable, and has excellent interception effect and bactericidal effect, there is important value and significance in antibacterial filtering material for mask field.
Description
Technical field
The invention belongs to biomedical materials fields, and in particular to the multi-layer nano fiber air with antibacterial functions filters
The preparation of material.
Background technique
Current rapid economic development, living standards of the people increasingly improve, but also bring serious environmental problem simultaneously.Air
Pollution is got worse, and a large amount of dust particle and bacterial virus are carried in dirty atmosphere, is propagated as air flows, to people's
Health causes very big puzzlement.
Electrostatic spinning technique is that polymer solution charges in high voltage electric field, overcomes Polymer Solution by electrostatic attraction
Surface tension, carry out injection stretch obtain the fiber of nanometer diameter.The larger, hole of nanofiber surface product that electrostatic spinning obtains
The features such as gap rate is low, diameter is small is a kind of extraordinary filtering material, to the filter efficiency of fine particle and bacterial virus compared with
Height has huge application prospect in field of medical materials.
Hydantoin derivative is novel halogen amine fungicide, this fungicide have be easy to regenerate, stability is good and efficiently, extensively
The characteristics of composing antibacterial.N- vinyl formamide-copolymerization -3- allyl -5,5- Dimethyl Hydan is the glycolylurea containing active amino
Derivative has anti-microbial property, can reach stronger bactericidal effect in a short time while having chlorination reproducing characteristic after chlorination.
Chitosan is a kind of natural polymer, cheap and easy to get, and biodegradability, biocompatibility are preferable, nothing
Poison, and there are antibacterial characteristics, it is used widely in field of medical materials.But chitosan is needed with the bacterium contact long period
Bacterium can be killed, to limit its scope of application, and chitosan spinnability is poor, usually with other materials co-blended spinning.
Polyvinyl alcohol (PVA) is a kind of water-soluble polymer, has good biological degradability, biocompatibility, chemistry
Stability, it is nontoxic, and there is good spinnability and film forming.The solvent of polyvinyl alcohol is water simultaneously, be can be avoided toxic molten
The use of agent is used widely as good bio-medical material.
Summary of the invention
The purpose of the present invention is for current mask antibacterial, filter effect it is bad in the case where, a kind of antibacterial is provided
The preparation method of electrostatic spinning nano fiber filtering material.The composite nano-fiber membrane of this method preparation has very the particle in air
High filter efficiency and antibacterial functions can be used for the leading filter layer of the air filters such as mask.
The technical solution adopted by the invention is as follows:
(1) 80 DEG C of heating water bath polyethylene dissolving alcohol prepares certain density polyvinyl alcohol water solution, while preparing certain
Chitosan and polyvinyl alcohol are carried out mixing 1h according to a certain percentage, and are added by the chitosan acetic acid solution of concentration
Enter in syringe, using aluminium foil as matrix is collected, spinning obtains nano fibrous membrane under suitable conditions.
(2) copolymer sample for weighing certain mass is dissolved in the polyvinyl alcohol water solution of step (1) configuration, mixes at room temperature
Stirring 2h is closed, clear solution is obtained, the nano fibrous membrane obtained using step (1) spinning is as matrix is collected, in appropraite condition
Lower spinning obtains two layers of nano fibrous membrane.
(3) nano fibrous membrane obtained using step (2) is carried out spinning, obtains three layers of nanofiber as matrix is collected
Film.
(4) nano fibrous membrane for obtaining above-mentioned steps is placed in drier, carries out crosslinking Treatment using glutaraldehyde steam.
(5) using with the 300 sodium chloride aerosol particle test gas permeabilities to 500nm diameter and the interception effect to particle
Rate.Using the antibiotic property of Escherichia coli and the Combined Electrostatic spinning nanometer fiber membrane of staphylococcus aureus test preparation.
Preferably, polyvinyl alcohol water solution mass concentration is 8%-10%, and concentration is too low, and solution viscosity is too small and leads
Cause that electrostatic spinning machine ejects is drop, can not EFI at silk.Then solution viscosity is excessive for excessive concentration, and solution is difficult in syringe needle
Tip forms centrum, can not wire vent.
Preferably, chitosan acetic acid solution concentration is 1%-3%, and acetic acid concentration 1%, chitosan is insoluble in water, molten
In acetic acid diluted, acetic acid concentration is excessively high, will lead to chitosan decomposition.Chitosan concentration is excessively high, then viscosity is larger, it is difficult to spinning, and
Chitosan itself is difficult to spinning.
Preferably, the mass concentration ratio of polyvinyl alcohol water solution and chitosan acetic acid solution is 1:1,2:1,3:1.Poly- second
Enol ratio is difficult to spinning when smaller, because of the more difficult spinning of chitosan itself.Polyvinyl alcohol water solution and copolymer sample mass ratio
For 1:1,2:1,3:1.
Preferably, EFI environment temperature is 10-50 DEG C, and high voltage power supply output voltage is 15-30KV, reception device and spray
The distance between silk mouth is 5-15cm, flow velocity 0.3-0.5mL/h.
Preferably, use sodium chloride aerosol particle diameter for 300-500nm, it is big for carrying out the microorganism of antibacterial test
Enterobacteria and staphylococcus aureus.
The application of Combined Electrostatic spinning nanometer fiber membrane, it is molten using sodium chloride gas as mask antibacterial air-filtering material
Glue particle test gas permeability and intercepting efficiency to particle, while its pressure drop can also be tested.Using Escherichia coli and golden yellow Portugal
The antibiotic property of the Combined Electrostatic spinning nanometer fiber membrane of grape coccus test preparation.
Three layers of electrostatic spinning nano fiber film of the invention are as antibacterial filtering material for mask, with document report phase before
Than having the advantages that
(1) preparation method is simple by the present invention, and condition is controllable, low in cost.
(2) antibacterial nanofiber membrane middle layer of the invention is the blend spinning film of polymer antibacterial agent and polyvinyl alcohol,
Play leading antibacterial action.Innermost layer and outermost layer are chitosan acetic acid solution and polyvinyl alcohol water solution blend spinning film, are risen
To auxiliary antibacterial action, after crosslinking, there are also mechanical supports to act on.The thickness of the diameter of three layers of nano fibrous membrane and film can be with simultaneously
Artificial control, the composite membrane in ultra-fine air particle and bacterium play interception function, and the bacterium intercepted can be by
Glycolylurea copolymer sample and chitosan on tunica fibrosa are killed.
(3) contain polymer antibacterial agent in nano fibrous membrane of the invention, can be avoided antibacterial agent in use
It is detached from, to increase the stability of filtering material.
(4) mask that antibacterial nano fiber filtering material of the invention is made into not only has good gas permeability, Er Qieneng
Effectively intercept sodium chloride aerosol particle.
Detailed description of the invention
Fig. 1 is electrostatic spinning easy device figure of the present invention；
Fig. 2 is the scanning electron microscope (SEM) photograph of composite spun fiber film prepared by the present invention；
Fig. 3 is the scanning electron microscope (SEM) photograph after composite spun fiber film prepared by the present invention immersion；
Fig. 4 is that the TGA of composite spun fiber film prepared by the present invention schemes.
Specific embodiment
Embodiment 1
8% polyvinyl alcohol water solution, 1% chitosan acetic acid solution are prepared, by it with mass fraction than the ratio for 1:1
Example is added in syringe after being uniformly mixed, the output voltage of high voltage power supply is 20KV, syringe needle and reception device distance are
10cm, flow velocity using electrostatic spinning machine spinning obtain first layer nano fibrous membrane under conditions of being 0.3mL/h.
Copolymer sample is dissolved in 8% polyvinyl alcohol water solution with the ratio of 1:1, the fiber obtained with above-mentioned steps
Film is to collect matrix progress electrostatic spinning to obtain two layers of tunica fibrosa.
With the preparation method of first layer spinning film spinning solution, using two layers obtained of tunica fibrosa in above-mentioned steps as collection
Matrix, spinning obtain three layers of tunica fibrosa.
Three layers of nano fibrous membrane that above-mentioned steps spinning is obtained are placed in drier, are steamed using 50% glutaraldehyde
Vapour crosslinking.
Embodiment 2
9% polyvinyl alcohol water solution, 2% chitosan acetic acid solution are prepared, by it with mass fraction than the ratio for 2:1
Example is added in syringe after being uniformly mixed, the output voltage of high voltage power supply is 25KV, syringe needle and reception device distance are
15cm, flow velocity using electrostatic spinning machine spinning obtain first layer nano fibrous membrane under conditions of being 0.4mL/h.
Copolymer sample is dissolved in 9% polyvinyl alcohol water solution with the ratio of 2:1, the fiber obtained with above-mentioned steps
Film is to collect matrix progress electrostatic spinning to obtain two layers of tunica fibrosa.
With the preparation method of first layer spinning film spinning solution, using two layers obtained of tunica fibrosa among the above as collection base
Body, spinning obtain three layers of tunica fibrosa.
Three layers of nano fibrous membrane that above-mentioned steps spinning is obtained are placed in drier, are steamed using 50% glutaraldehyde
Vapour crosslinking.
Embodiment 3
10% polyvinyl alcohol water solution, 3% chitosan acetic acid solution are prepared, by it with mass fraction than for 3:1's
Ratio is added in syringe after being uniformly mixed, and is 15KV, syringe needle and reception device distance in the output voltage of high voltage power supply
First layer nano fibrous membrane is obtained using electrostatic spinning machine spinning under conditions of being 0.5mL/h for 5cm, flow velocity.
Copolymer sample is dissolved in 10% polyvinyl alcohol water solution with the ratio of 3:1, the fibre obtained with above-mentioned steps
Dimension film is to collect matrix progress electrostatic spinning to obtain two layers of tunica fibrosa.
With the preparation method of first layer spinning film spinning solution, using two layers obtained of tunica fibrosa among the above as collection base
Body, spinning obtain three layers of tunica fibrosa.
Three layers of nano fibrous membrane that above-mentioned steps spinning is obtained are placed in drier, are steamed using 50% glutaraldehyde
Vapour crosslinking.
Embodiment 4
10% polyvinyl alcohol water solution, 3% chitosan acetic acid solution are prepared, by it with mass fraction than for 1:1's
Ratio is added in syringe after being uniformly mixed, and is 15KV, syringe needle and reception device distance in the output voltage of high voltage power supply
First layer nano fibrous membrane is obtained using electrostatic spinning machine spinning under conditions of being 0.3mL/h for 10cm, flow velocity.
Copolymer sample is dissolved in 10% polyvinyl alcohol water solution with the ratio of 1:1, the fibre obtained with above-mentioned steps
Dimension film is to collect matrix progress electrostatic spinning to obtain two layers of tunica fibrosa.
With the preparation method of first layer spinning film spinning solution, using two layers obtained of tunica fibrosa among the above as collection base
Body, spinning obtain three layers of tunica fibrosa.
Three layers of nano fibrous membrane that above-mentioned steps spinning is obtained are placed in drier, are steamed using 50% glutaraldehyde
Vapour crosslinking.
Embodiment 5
10% polyvinyl alcohol water solution, 3% chitosan acetic acid solution are prepared, the ratio that its mass ratio is 2:1 is stirred
Mix and be added in syringe after mixing, the output voltage of high voltage power supply be 20KV, syringe needle and reception device distance be 15cm,
Flow velocity using electrostatic spinning machine spinning obtains first layer nano fibrous membrane under conditions of being 0.4mL/h.
Copolymer sample is dissolved in 10% polyvinyl alcohol water solution with the ratio of 2:1, the fibre obtained with above-mentioned steps
Dimension film is to collect matrix progress electrostatic spinning to obtain two layers of tunica fibrosa.
With the preparation method of first layer spinning film spinning solution, using two layers obtained of tunica fibrosa among the above as collection base
Body, spinning obtain three layers of tunica fibrosa.
Three layers of nano fibrous membrane that above-mentioned steps spinning is obtained are placed in drier, are steamed using 50% glutaraldehyde
Vapour crosslinking.
Embodiment 6
10% polyvinyl alcohol water solution, 3% chitosan acetic acid solution are prepared, by it with mass fraction than for 3:1's
Ratio is added in syringe after being uniformly mixed, and is 25KV, syringe needle and reception device distance in the output voltage of high voltage power supply
First layer nano fibrous membrane is obtained using electrostatic spinning machine spinning under conditions of being 0.5mL/h for 15cm, flow velocity.
Copolymer sample mass fraction is dissolved in 10% polyvinyl alcohol water solution than the ratio for 3:1, with above-mentioned step
Suddenly the tunica fibrosa obtained is to collect matrix progress electrostatic spinning to obtain two layers of tunica fibrosa.
With the preparation method of first layer spinning film spinning solution, using two layers obtained of tunica fibrosa among the above as collection base
Body, spinning obtain three layers of tunica fibrosa.
Three layers of nano fibrous membrane that above-mentioned steps spinning is obtained are placed in drier, are steamed using 50% glutaraldehyde
Vapour crosslinking.
Embodiment 7
10% polyvinyl alcohol water solution, 3% chitosan acetic acid solution are prepared, by it with mass fraction than for 3:1's
Ratio is added in syringe after being uniformly mixed, and is 20KV, syringe needle and reception device distance in the output voltage of high voltage power supply
First layer nano fibrous membrane is obtained using electrostatic spinning machine spinning under conditions of being 0.5mL/h for 15cm, flow velocity.
Copolymer sample is dissolved in 10% polyvinyl alcohol water solution with mass fraction than the ratio for 1:1, with above-mentioned
The tunica fibrosa that step obtains is to collect matrix progress electrostatic spinning to obtain two layers of tunica fibrosa.
With the preparation method of first layer spinning film spinning solution, using two layers obtained of tunica fibrosa among the above as collection base
Body, spinning obtain three layers of tunica fibrosa.
Three layers of nano fibrous membrane that above-mentioned steps spinning is obtained are placed in drier, are steamed using 50% glutaraldehyde
Vapour crosslinking.
In above-described embodiment, the ratio of polymer in spinning solution, the concentration of polymer, electrostatic can be adjusted according to experimental implementation
Spinning parameter prepares composite nano-fiber membrane, makes it have optimum filtration efficiency.It should be pointed out that above embodiments are the present invention
Not limiting example, the present invention is not limited to the above embodiments, can also there are many adjustment, can be adjusted derived from the present invention
It is whole to be accordingly to be regarded as protection scope of the present invention.
Claims (7)
1. the preparation of the Electrospun nano-fibers air filting material of antibacterial, it is characterised in that the method includes following steps
It is rapid:
(1) 80 DEG C of heating water bath polyethylene dissolving alcohol, prepares certain density polyvinyl alcohol water solution, while preparing a certain concentration
Chitosan acetic acid solution, chitosan and polyvinyl alcohol are subjected to mixing 1h according to a certain percentage, and be added into note
In emitter, using aluminium foil as matrix is collected, spinning obtains nano fibrous membrane under suitable conditions；
(2) copolymer sample for weighing certain mass is dissolved in the polyvinyl alcohol water solution of step (1) configuration, and mixing is stirred at room temperature
2h is mixed, clear solution is obtained, nano fibrous membrane of the spinning obtained using step (1) on aluminium foil is as matrix is collected, suitable
Under the conditions of spinning obtain two layers of nano fibrous membrane；
(3) nano fibrous membrane obtained using step (2) is carried out spinning, obtains three layers of nano fibrous membrane as matrix is collected；
(4) three layers of composite nano-fiber membrane are placed in drier, are put later using glutaraldehyde vapor crosslinking processing crosslinking Treatment
It is dried in vacuum oven, is subsequently placed in progress chlorination processing in 0.10% liquor natrii hypochloritis.
2. preparation method according to claim 1, it is characterised in that: copolymer sample is that one kind glycolylurea containing active amino spreads out
Biopolymers material (N- vinyl formamide-copolymerization -3- allyl -5,5- Dimethyl Hydan), it is characterized in that structural formula is as follows:
3. preparation method according to claim 1, it is characterised in that: the mass fraction of polyvinyl alcohol water solution is 8%-
10%, chitosan acetic acid solution mass fraction is 1%-3%.
4. preparation method according to claim 1, it is characterised in that: spinning environment temperature is 10-50 DEG C, and high voltage power supply is defeated
Voltage is 15-30KV out, and the distance between reception device and spinning nozzle are 5-15cm, flow velocity 0.3-0.5mL/h.
5. preparation method according to claim 1, it is characterised in that: polyvinyl alcohol water solution and chitosan acetic acid solution
Mass fraction ratio is 1:1,2:1,3:1, and polyvinyl alcohol water solution and copolymer sample mass fraction ratio are 1:1,2:1,3:1.
6. preparation method according to claim 1, it is characterised in that: as antibacterial filtering material for mask, using having
300 to the sodium chloride aerosol particle test gas permeability of 500nm diameter and to the intercepting efficiency of particle, and filter efficiency is reachable
95%-99%, pressure drop 25-300Pa, better than N90 on the market, N95 mask.
7. preparation method according to claim 1, it is characterised in that: tested using Escherichia coli and staphylococcus aureus
The antibiotic property of the Combined Electrostatic spinning nanometer fiber membrane of preparation, can reach 100% bacteriostasis rate in 30min.
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| CN201810913718.8A CN108993167B (en) | 2018-08-13 | 2018-08-13 | Preparation and application of antibacterial electrostatic spinning nanofiber air filtering material |
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| CN201810913718.8A CN108993167B (en) | 2018-08-13 | 2018-08-13 | Preparation and application of antibacterial electrostatic spinning nanofiber air filtering material |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111235691A (en) * | 2020-02-03 | 2020-06-05 | 珠海睿展生物材料有限公司 | Nanofiltration antibacterial material, preparation method and application thereof |
| CN112957347A (en) * | 2021-02-03 | 2021-06-15 | 北京市创伤骨科研究所 | Skin layer-by-layer gradient slow-release nursing film |
| CN113332484A (en) * | 2021-05-08 | 2021-09-03 | 海南大学 | Preparation method of photo-thermal antibacterial nanofiber membrane |
| CN113529274A (en) * | 2021-08-19 | 2021-10-22 | 澜海生态农业(杭州)有限公司 | Nanofiber membrane and application thereof, nanofiber membrane sterilization liquid and application method thereof |
| CN113638073A (en) * | 2021-07-22 | 2021-11-12 | 绍兴市柯桥区东纺纺织产业创新研究院 | Preparation method of antibacterial nanofiber |
| CN113731197A (en) * | 2021-09-17 | 2021-12-03 | 山东省科学院新材料研究所 | Preparation method of high-permeability antibacterial polyimide/chitosan composite nanofiber air filtering membrane, product and application thereof |
| CN114438665A (en) * | 2022-01-28 | 2022-05-06 | 广东粤港澳大湾区国家纳米科技创新研究院 | Antibacterial non-woven fabric and preparation method thereof |
| CN114763628A (en) * | 2021-01-13 | 2022-07-19 | 生纳科技(上海)有限公司 | Antiviral nanofiber and preparation method thereof |
| CN114892342A (en) * | 2022-04-26 | 2022-08-12 | 自然资源部第三海洋研究所 | Preparation method and application of antibacterial nanofiber membrane |
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| CN111235691A (en) * | 2020-02-03 | 2020-06-05 | 珠海睿展生物材料有限公司 | Nanofiltration antibacterial material, preparation method and application thereof |
| CN114763628A (en) * | 2021-01-13 | 2022-07-19 | 生纳科技(上海)有限公司 | Antiviral nanofiber and preparation method thereof |
| CN112957347A (en) * | 2021-02-03 | 2021-06-15 | 北京市创伤骨科研究所 | Skin layer-by-layer gradient slow-release nursing film |
| CN113332484B (en) * | 2021-05-08 | 2022-06-21 | 海南大学 | Preparation method of photo-thermal antibacterial nanofiber membrane |
| CN113332484A (en) * | 2021-05-08 | 2021-09-03 | 海南大学 | Preparation method of photo-thermal antibacterial nanofiber membrane |
| CN113638073A (en) * | 2021-07-22 | 2021-11-12 | 绍兴市柯桥区东纺纺织产业创新研究院 | Preparation method of antibacterial nanofiber |
| CN113529274A (en) * | 2021-08-19 | 2021-10-22 | 澜海生态农业(杭州)有限公司 | Nanofiber membrane and application thereof, nanofiber membrane sterilization liquid and application method thereof |
| CN113731197B (en) * | 2021-09-17 | 2022-05-20 | 山东省科学院新材料研究所 | Preparation method of high-permeability antibacterial polyimide/chitosan composite nanofiber air filtering membrane, product and application thereof |
| CN113731197A (en) * | 2021-09-17 | 2021-12-03 | 山东省科学院新材料研究所 | Preparation method of high-permeability antibacterial polyimide/chitosan composite nanofiber air filtering membrane, product and application thereof |
| WO2023083394A1 (en) * | 2021-11-14 | 2023-05-19 | Olejar Lubomir | Filter material |
| CN114438665A (en) * | 2022-01-28 | 2022-05-06 | 广东粤港澳大湾区国家纳米科技创新研究院 | Antibacterial non-woven fabric and preparation method thereof |
| CN114892342A (en) * | 2022-04-26 | 2022-08-12 | 自然资源部第三海洋研究所 | Preparation method and application of antibacterial nanofiber membrane |
| CN115387116A (en) * | 2022-09-02 | 2022-11-25 | 浙江技立新材料股份有限公司 | Biological antibacterial dyeing nanofiber membrane and preparation method thereof |
| CN115387116B (en) * | 2022-09-02 | 2023-08-22 | 浙江技立新材料股份有限公司 | Biological antibacterial dyed nanofiber membrane and preparation method thereof |
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