CN107723815A - A kind of oriented nanofibers and preparation method thereof - Google Patents
A kind of oriented nanofibers and preparation method thereof Download PDFInfo
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- CN107723815A CN107723815A CN201710946203.3A CN201710946203A CN107723815A CN 107723815 A CN107723815 A CN 107723815A CN 201710946203 A CN201710946203 A CN 201710946203A CN 107723815 A CN107723815 A CN 107723815A
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- oriented nanofibers
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- spinning
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- 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
- D01D5/12—Stretch-spinning methods
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- 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
Abstract
The invention discloses a kind of oriented nanofibers and preparation method thereof.The present invention combines by using rotor spinning and magnetic field force, controls the movement locus of spinning solution jet, realizes the production of oriented nanofibers.The present invention simple economy, avoids electrostatic pollution and potential danger caused by high-pressure electrostatic again without high-voltage electrostatic generator, spinning process is more safe and stable, multiple jetses can be produced simultaneously, greatly improve spinning fluency and production efficiency, suitable for industrialized production oriented nanofibers.
Description
Technical field
The present invention relates to the preparation method of nanofiber, and in particular to a kind of oriented nanofibers and preparation method thereof.
Background technology
A diameter of 10nm~1000nm polymer fiber has many special properties, and this kind of polymer fibres layers have
Very high filter efficiency, it can be used as the filtering of gas and liquid, retain the barrier material of submicron particles, bacterium and chemicals；
As battery separator, composite reinforcement；It is used as pharmaceutical carrier and tissue implants carriers in field of medicaments；Nanowire
The high-specific surface area of dimension determines that it has special adsorption property, such as the purposes of the carrier of catalyst.
Nanofiber by the polymer of wide scope, blend polymer and can be gathered by polymer solution processing technology
The blend of compound and low molecule additive is made, and because solution viscosity is relatively low, can be obtained by solution process less straight
The fiber in footpath.Coulomb force of the solution processing technology in the mechanical force using flowing gaseous medium or electrostatic field, can be divided into
Rotor spinning and the class of electrostatic spinning two.
At present, the method and apparatus of rotor spinning have been widely used for the preparation of nanofiber.Polymer solution is noted
Enter the spinning head to ring section, then, by means of the mechanism of the air-flow in the ring delivered inside make the solution into
Type, producing has 200 nanometers to 3, the fiber of 000 nanometer diameter.
Electrostatic spinning is another common method for preparing nanofiber.Polymer solution is assigned to the milli of internal diameter 0.5
Rice is into 1.5 millimeters of cylindrical spinning-nozzle, and these nozzles are connected to direct voltage source, and effluent solvent is by means of quiet
Electric power is attracted to electrode, and this is typically grounded to electrode, while filament is shaped to by means of this power, its
Therefore it is split into the fiber of corresponding small diameter.Spinning is from a nozzle either a series of static or mobile nozzle
Carry out, so as to improve the production capacity of device.
However, the method and production efficiency ratio of above-mentioned production nanofiber are relatively low, can only produce within a certain period of time seldom
The polymeric material of the processing of amount.The diameter of nanofiber prepared by rotor spinning depends particularly on air quality and flows through spinneret
The ratio of the polymer solution of head；Electrostatic spinning then must form so-called Taylor cone, process conditions in the throat of spinning head
It is it is required that higher.The maximum adjustable intensity of electrostatic field is limited by air insulation intensity, and when being higher than the limit, electrode it
Between discharge, potential safety hazard in production process be present.In view of the foregoing and accessible polymer solution spun concentration,
The polymer of about 0.1 gram to 1 gram of processing was possible in a spinning head in one hour, while spinning process needs are higher
Voltage, produce nanofiber during the problems such as yield is relatively low, and safety coefficient is not high be present.On the other hand, the above method
The nanofiber being prepared mostly random alignment, in unordered shape.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of oriented nanofibers and preparation method thereof,
Combined by rotor spinning and magnetic field force, control the movement locus of jet, improve nanofiber order；This method need not height
Electrostatic generator is pressed, simple economy, spinning process is more safe and stable, and production efficiency is higher, is taken suitable for industrialized production
To nanofiber.
To achieve the above object, the technical scheme that the present invention takes is as follows：
A kind of preparation method of oriented nanofibers, it is characterised in that comprise the following steps：
(1) spinning solution is prepared：Magnetic nanoparticle is scattered in macromolecule polymer solution, forms spinning solution；
(2) oriented nanofibers are prepared：Spinning solution made from step (1) is placed in externally-applied magnetic field, to spinning solution
Gas is injected, disturbance spinning solution makes it produce jet, jet stretcher strain, is finally formed by curing oriented nanofibers.
Combined in above-mentioned technical proposal by rotor spinning and magnetic field force, control the movement locus of jet, improve Nanowire
Tie up order；It is more safe and stable without high-voltage electrostatic generator, simple economy, spinning process, multiply can be produced simultaneously
Jet, production efficiency is higher, suitable for industrialized production oriented nanofibers.
As the preferred embodiment of the preparation method of oriented nanofibers of the present invention, the magnetic nanoparticle
For γ-Fe2O3、Fe3O4, cobalt, at least one of nickel magnetic nanoparticle.
As the preferred embodiment of the preparation method of oriented nanofibers of the present invention, the magnetic nanoparticle
Mass fraction in spinning solution is 5%.
As the preferred embodiment of the preparation method of oriented nanofibers of the present invention, the flow velocity of the gas is
10~200m/s.
As the preferred embodiment of the preparation method of oriented nanofibers of the present invention, the high molecular polymer
For PLA, polycaprolactone, poly (glycolide-lactide) or sodium alginate.
As the preferred embodiment of the preparation method of oriented nanofibers of the present invention, the high molecular polymer
The concentration of high molecular polymer is 4~15w/v% in solution.
As the preferred embodiment of the preparation method of oriented nanofibers of the present invention, the high molecular polymer
Solvent be dichloromethane, dimethyl sulfoxide (DMSO), trifluoroethanol, chloroform or trifluoroacetic acid.
The present invention also provides a kind of oriented nanofibers made from technical scheme in accordance with the above.
Compared with prior art, beneficial effects of the present invention are：
Combined in technical solution of the present invention by rotor spinning and magnetic field force, control the movement locus of jet, improve nanometer
Fiber order；For the present invention without high-voltage electrostatic generator, simple economy, spinning process is more safe and stable, can produce simultaneously
Raw multiple jetses, greatly improve spinning fluency and production efficiency, suitable for industrialized production oriented nanofibers.
Brief description of the drawings
Fig. 1 is oriented nanofibers scanning electron microscope (SEM) photograph prepared by embodiment 1.
Fig. 2 is oriented nanofibers orientation result prepared by embodiment 1.
Fig. 3 is oriented nanofibers scanning electron microscope (SEM) photograph prepared by embodiment 4.
Fig. 4 is oriented nanofibers orientation result prepared by embodiment 4.
Embodiment
For the object, technical solutions and advantages of the present invention are better described, below in conjunction with the drawings and specific embodiments pair
The present invention further illustrates.It will be appreciated by those skilled in the art that specific embodiment described herein is only explaining this hair
It is bright, it is not intended to limit the present invention.
Embodiment 1
A kind of embodiment of the preparation method of oriented nanofibers of the present invention, the system of oriented nanofibers described in the present embodiment
Preparation Method is：
PLA is dissolved in dichloromethane, PLA concentration is 4w/v% in gained PLA solution；By Fe3O4Nanometer
Grain is added in the PLA solution for preparing, using high-shear homogenizer by Fe3O4It is dispersed in PLA solution, is formed and spun
Silk solution, Fe3O4Nano particle is 5% in the mass fraction of spinning solution；Spinning solution is placed in externally-applied magnetic field, and spun
Gas is injected in silk solution, the flow velocity of gas is 10m/s, and disturbance spinning solution makes it produce bubble, in externally-applied magnetic field, bubble
Rupture and produce jet, jet stretcher strain, the dichloromethane volatilization of residual, be formed by curing oriented nanofibers；Vacuum drying
48h obtains final oriented nanofibers.
Embodiment 2
A kind of embodiment of the preparation method of oriented nanofibers of the present invention, the system of oriented nanofibers described in the present embodiment
Preparation Method is：
Polycaprolactone is dissolved in dimethyl sulfoxide (DMSO), polycaprolactone concentration is 8w/v% in gained polycaprolactone solution；By γ-
Fe2O3Nano particle is added in the polycaprolactone solution for preparing, using high-shear homogenizer by γ-Fe2O3Nano particle uniformly divides
Dissipate in polycaprolactone solution, form spinning solution, γ-Fe2O3Nano particle is 5% in the mass fraction of spinning solution；It will spin
Silk solution is placed in externally-applied magnetic field, and gas is injected in spinning solution, and the flow velocity of gas is 50m/s, and disturbance spinning solution makes
It produces bubble, in externally-applied magnetic field, bubbles burst and produces jet, jet stretcher strain, the dimethyl sulfoxide (DMSO) volatilization of residual,
It is formed by curing oriented nanofibers；Vacuum drying 48h obtains final oriented nanofibers.
Embodiment 3
A kind of embodiment of the preparation method of oriented nanofibers of the present invention, the system of oriented nanofibers described in the present embodiment
Preparation Method is：
Poly (glycolide-lactide) is dissolved in trifluoroethanol, poly (glycolide-lactide) concentration is 12w/v% in gained poly (glycolide-lactide) solution；
Nano nickel particles are added in the poly (glycolide-lactide) solution prepared, uniformly divided nickel magnetic nanoparticle using high-shear homogenizer
Dissipate in poly (glycolide-lactide) solution, form spinning solution, nickel magnetic nanoparticle is 5% in the mass fraction of spinning solution；Will
Spinning solution is placed in externally-applied magnetic field, and gas is injected in spinning solution, and the flow velocity of gas is 100m/s, disturbs spinning solution
It is set to produce bubble, in externally-applied magnetic field, bubbles burst and produce jet, jet stretcher strain, the trifluoroethanol volatilization of residual,
It is formed by curing oriented nanofibers；Vacuum drying 48h obtains final oriented nanofibers.
Embodiment 4
A kind of embodiment of the preparation method of oriented nanofibers of the present invention, the system of oriented nanofibers described in the present embodiment
Preparation Method is：
Sodium alginate is dissolved in chloroform, sodium alginate concentration is 4w/v% in gained sodium alginate soln；Cobalt magnetic is received
Rice grain is added in the sodium alginate soln prepared in spinning solution, is being spun cobalt magnetic nanoparticle using high-shear homogenizer
Silk solution is dispersed in sodium alginate soln, forms spinning solution, quality point of the cobalt magnetic nanoparticle in spinning solution
Number is 5%；Spinning solution is placed in externally-applied magnetic field, and gas is injected in spinning solution, the flow velocity of gas is 150m/s, is disturbed
Dynamic spinning solution makes it produce bubble, in externally-applied magnetic field, bubbles burst and produce jet, jet stretcher strain, the chlorine of residual
Imitative volatilization, is formed by curing oriented nanofibers；Vacuum drying 48h obtains final oriented nanofibers.
Embodiment 5
A kind of embodiment of the preparation method of oriented nanofibers of the present invention, the system of oriented nanofibers described in the present embodiment
Preparation Method is：
PLA is dissolved in trifluoroacetic acid, PLA concentration is 15w/v% in gained PLA solution；Cobalt nickel magnetic is received
Rice grain is added in the PLA solution prepared, and cobalt nickel magnetic nanoparticle is dispersed in into poly- breast using high-shear homogenizer
In acid solution, spinning solution is formed, cobalt nickel magnetic nanoparticle is 5% in the mass fraction of spinning solution；Spinning solution is put
In externally-applied magnetic field, and gas is injected in spinning solution, the flow velocity of gas is 200m/s, and disturbance spinning solution makes it produce gas
Bubble, in externally-applied magnetic field, bubbles burst and produce jet, jet stretcher strain, residual trifluoroacetic acid volatilization, be formed by curing and take
To nanofiber；Vacuum drying 48h obtains final oriented nanofibers.
Oriented nanofibers prepared by embodiment 1 and embodiment 4 are scanned with electron microscopic observation and degree of orientation test.Figure
1 and Fig. 2 is respectively the scanning electron microscopic picture and degree of orientation result of the oriented nanofibers prepared by embodiment 1, and embodiment 1 is made
Standby oriented nanofibers surface is smooth, arranges very well ordered, is arranged mainly along the axial direction of fiber.Fig. 3 and Fig. 4 is respectively real
The scanning electron microscopic picture and degree of orientation result of the oriented nanofibers prepared by example 4 are applied, the nanofiber tool prepared by embodiment 4
There is certain orientation.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected
The limitation of scope is protected, although being explained in detail with reference to preferred embodiment to the present invention, one of ordinary skill in the art should
Understand, technical scheme can be modified or equivalent substitution, without departing from the essence of technical solution of the present invention
And scope.
Claims (8)
1. a kind of preparation method of oriented nanofibers, it is characterised in that comprise the following steps：
(1) spinning solution is prepared：Magnetic nanoparticle is scattered in macromolecule polymer solution, forms spinning solution；
(2) oriented nanofibers are prepared：Spinning solution made from step (1) is placed in externally-applied magnetic field, injected to spinning solution
Gas, disturbance spinning solution make it produce jet, jet stretcher strain, are finally formed by curing oriented nanofibers.
2. the preparation method of oriented nanofibers according to claim 1, it is characterised in that the magnetic nanoparticle is
γ-Fe2O3、Fe3O4, cobalt, at least one of nickel magnetic nanoparticle.
3. the preparation method of oriented nanofibers according to claim 1, it is characterised in that the magnetic nanoparticle exists
Mass fraction in spinning solution is 5%.
4. the preparation method of oriented nanofibers according to claim 1, it is characterised in that the flow velocity of the gas is 10
~200m/s.
5. the preparation method of oriented nanofibers according to claim 1, it is characterised in that the high molecular polymer is
PLA, polycaprolactone, poly (glycolide-lactide) or sodium alginate.
6. the preparation method of oriented nanofibers according to claim 1, it is characterised in that the high molecular polymer is molten
The concentration of high molecular polymer is 4~15w/v% in liquid.
7. the preparation method of oriented nanofibers according to claim 1, it is characterised in that the high molecular polymer
Solvent is dichloromethane, dimethyl sulfoxide (DMSO), trifluoroethanol, chloroform or trifluoroacetic acid.
8. oriented nanofibers made from the preparation method of the oriented nanofibers according to any one of claim 1~7.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110656402A (en) * | 2019-01-21 | 2020-01-07 | 深圳维度新材料有限公司 | Preparation method and equipment of inorganic nano-fiber |
| CN112369661A (en) * | 2020-01-16 | 2021-02-19 | 湖北中烟工业有限责任公司 | Cooling filter rod and low-temperature cigarette with same |
| CN114959924A (en) * | 2022-06-28 | 2022-08-30 | 衢州学院 | High-intensity magnetic field system for orientation arrangement of nano chitin fibers |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102965744A (en) * | 2012-12-17 | 2013-03-13 | 苏州大学 | Composite bubble electrostatic spinning device |
| CN104862799A (en) * | 2015-05-26 | 2015-08-26 | 青岛大学 | Method for preparing graphene/polymer orderly micro-nanometer composite fiber through magnetic spinning |
| CN104878455A (en) * | 2015-05-26 | 2015-09-02 | 青岛大学 | Melt magnetism spinning device and micro-nanofiber preparing method by utilizing melt magnetism spinning device |
| CN105350088A (en) * | 2015-11-13 | 2016-02-24 | 广东工业大学 | Ultrasonic porous bubble electro-spinning equipment |
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2017
- 2017-10-11 CN CN201710946203.3A patent/CN107723815A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102965744A (en) * | 2012-12-17 | 2013-03-13 | 苏州大学 | Composite bubble electrostatic spinning device |
| CN104862799A (en) * | 2015-05-26 | 2015-08-26 | 青岛大学 | Method for preparing graphene/polymer orderly micro-nanometer composite fiber through magnetic spinning |
| CN104878455A (en) * | 2015-05-26 | 2015-09-02 | 青岛大学 | Melt magnetism spinning device and micro-nanofiber preparing method by utilizing melt magnetism spinning device |
| CN105350088A (en) * | 2015-11-13 | 2016-02-24 | 广东工业大学 | Ultrasonic porous bubble electro-spinning equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110656402A (en) * | 2019-01-21 | 2020-01-07 | 深圳维度新材料有限公司 | Preparation method and equipment of inorganic nano-fiber |
| CN112369661A (en) * | 2020-01-16 | 2021-02-19 | 湖北中烟工业有限责任公司 | Cooling filter rod and low-temperature cigarette with same |
| CN114959924A (en) * | 2022-06-28 | 2022-08-30 | 衢州学院 | High-intensity magnetic field system for orientation arrangement of nano chitin fibers |
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Application publication date: 20180223 |