CN107699965A - Right-angled intersection stacks nanofiber array preparation method - Google Patents
Right-angled intersection stacks nanofiber array preparation method Download PDFInfo
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- CN107699965A CN107699965A CN201710801174.1A CN201710801174A CN107699965A CN 107699965 A CN107699965 A CN 107699965A CN 201710801174 A CN201710801174 A CN 201710801174A CN 107699965 A CN107699965 A CN 107699965A
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- spinning
- electrodes
- nanofiber
- angled intersection
- stacks
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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
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0092—Electro-spinning characterised by the electro-spinning apparatus characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
Abstract
The invention discloses a kind of right-angled intersection to stack nanofiber array preparation method.This method realizes the preparation of the oriented nanofiber array of two dimension with reference to special spinning substrate by electrostatic spinning apparatus spraying polymer solution.By changing the direction of an electric field of substrate, the direction of every layer of nanofiber array can be controlled, nanofiber is stacked so as to prepare right-angled intersection；By the adjustment to solution parameter and operating parameter, the diameter of nanofiber and the density of every layer of nanofiber can be controlled.
Description
Technical field
The present invention relates to electrostatic spinning field, more particularly, to a kind of preparation side of right-angled intersection stacking nanofiber array
Method.
Background technology
In recent years, nanofiber has been to be concerned by more and more people, and nanofiber has that specific surface area is big, in light weight, machine
The features such as tool performance is good, before there is wide application in fields such as filtering material, protective materials, biomedicine, micro-nano sensors
Scape.The method for preparing nanofiber is varied, and method of electrostatic spinning, which prepares nanofiber, has that controllability is good, continuity is strong, can
Prepare continuous nanofiber, the advantages that required equipment is simple, favored by numerous researchers, be to prepare nanofiber at present
Most efficient method.
Want to realize the industrial applications of Electrospun nano-fibers, it has to be possible to rapidly, continuously prepare uniform, desirable
To the nanofiber of arrangement, but electrostatic spinning is typically only capable to obtain random direction bending, the continuous nonwoven mat structure of fiber, and
Generally existing Beads；It is not of uniform size to spin fibre diameter simultaneously；It must be mixed in the solution for non-polar polymer solution
Miscellaneous conducting nanoparticles.In recent years, some researchs are by changing receiver architecture, so as to change Electric Field Distribution to obtain partial zones
The directional fiber in domain, but its directional fiber preparative capacibility is still very limited, it is difficult to micro-nano is prepared between specific location point
Fiber.
The content of the invention
It is an object of the invention to provide the preparation method that a kind of right-angled intersection stacks nanofiber array.Utilize Static Spinning
Silk and special spinning reception device, by changing direction of an electric field, realization quickly and efficiently prepares right-angled intersection and stacks nanofiber
Array, by the adjustment to solution parameter and operating parameter, the diameter of nanofiber can be more accurately controlled.
To achieve the above object, the present invention provides following technical scheme：
The present invention discloses a kind of right-angled intersection and stacks nanofiber array preparation method, the specific steps of this method first
It is as follows：
1) at room temperature, polymer is added in the solvent prepared, is stirred to obtain spinning solution；
2) special spinning is received into substrate to be arranged on electrostatic spinning apparatus, described special spinning receive substrate by
PCB substrate, two pairs of electrodes composition, two pairs of electrodes is arranged in PCB substrate and two pairs of electrodes is located at horizontal and vertical two respectively
Direction；And be grounded two electrodes of horizontal direction, two electrodes of vertical direction connect high voltage power supply；Then spinning nozzle is pacified
Make the electrode of vertical some ground connection of face in its front end loaded on the height of spinning nozzle and position on support, is adjusted, after spinning nozzle
End is connected by conduit with syringe pump, spinning nozzle conductive part tap high-voltage DC power supply；
3) spinning solution is fed by syringe pump, adjusts high-voltage DC power supply voltage, start spinning in the horizontal direction；
4) after horizontal direction spinning terminates, then two electrodes ground connection by vertical direction, two electrodes of horizontal direction
High voltage power supply is connect, then repeat step 3), in vertical direction spinning.
5) repeat step 3) and 4), it is final to can obtain right-angled intersection stacking nanofiber array.
Preferably, the polymer requirement described in described polymer solute is uniformly dissolved at room temperature, has certain glue
Degree, such as polyoxyethylene (PEO), nylon (PA), polyurethane (PU), PLA (PLLA), polystyrene (PS), polyvinyl alcohol
(PVA), Poly(D,L-lactide-co-glycolide (PLGA), polylactide (PLA), polycaprolactone (PCL), Kynoar
(PVDF), polymethyl methacrylate (PMMA), polyvinylpyrrolidone (PVP) etc., can be used according to functional requirement single poly-
Compound or mixed polymer, it can also use natural polymer or inorganic matter.
Preferably, the viscosity of described spinning solution is 0.1~2.0Pas.
Preferably, described spinning process is specially：Spinning receives a pair of electrodes ground connection in substrate, perpendicular direction
Another pair electrode connect high potential, electric field induction fiber only ground connection this motion electrode and this electrode formed with
To array.
Solvent requirement of the present invention can dissolve selected polymer solute, preferable to require easily quick at normal temperatures
Volatilization.Dimethylformamide (DMF), tetrahydrofuran (THF) organic solvent can such as be selected.
Described step 3) and 4) in, pass through the parameter (viscosity, surface tension, electric conductivity etc.) to spinning solution and behaviour
Make parameter (voltage, the spacing of shower nozzle and collecting board, spinning solution feed speed), control the diameter and every layer of nanofiber of fiber
Density.
The invention also discloses the right-angled intersection that a kind of methods described is prepared to stack nanofiber array.
Beneficial effects of the present invention are as follows：
(1) present invention can realize that nano level criss-cross construction stacks the preparation of nanofiber array, using cross
Intersect stacking and form regular array, the new material with ordered micro-configuration can be prepared；
(2) equipment therefor of the present invention is simple and realizes automation, can at a high speed, continuously prepare right-angled intersection and stack nanometer
Fiber array；
(3) structural parameters controllability of the present invention is good, can control the diameter of fiber and the density of every layer of nanofiber, prepares
The material of difference in functionality.
Brief description of the drawings
Fig. 1 is that right-angled intersection stacks nanofiber array structural representation.
Fig. 2 is electrostatic spinning apparatus structural representation.
Fig. 3 is special spinning reception device structural representation.
In figure：1st, nanofiber, 2, copper electrode, 3, PCB substrate, 4, spinning nozzle, 5, high-voltage DC power supply.
Fig. 4 is that right-angled intersection stacks nanofiber array preparation process schematic diagram.
Embodiment
The embodiment explanation present invention is named, but the present invention is not limited to following embodiments.
Referring to the drawings 1, right-angled intersection is prepared using the inventive method and stacks nanofiber array, is comprised the following steps that：
1) present invention realizes that right-angled intersection stacks nanofiber array by solution injection and special spinning reception device
Prepare.As shown in Fig. 2 solution injection apparatus is made up of spinning nozzle 4, high-voltage DC power supply 5；As shown in figure 3, spinning receives dress
Put and be made up of copper electrode 2, PCB substrate 3, two pairs of copper electrode vertical distributions are in PCB substrate；
2) at room temperature, polymer is added in the solvent prepared, is stirred to obtain spinning solution；
3) it is as shown in Figure 4 to stack nanofiber array preparation process for right-angled intersection.Two electrodes of horizontal direction are grounded,
Two electrodes of vertical direction meet high potential U；Then spinning nozzle is installed on support, adjusts height and the position of spinning nozzle
Putting makes the electrode of the vertical face left side ground in its front end, and spinning nozzle rear end is connected by conduit with syringe pump, and spinning nozzle is led
Electric part connects high-voltage DC power supply 5.
4) adjust high-voltage DC power supply voltage and high-voltage potential is provided, produce the electrode surface by pointing to ground connection by spinning nozzle
Electric field；Then spinning solution is fed to spinning nozzle by syringe pump, and take at spinning nozzle electric charge along electric field line to
The right electrodes movement of ground connection, meanwhile, constantly volatilization causes solute to solidify to solvent in the air, obtains powered nanofiber,
Nanofiber moves to the moment of right electrodes, and because nanofiber is powered, the electrode moment contacted with nanofiber is powered,
So that electric field deflects, nanofiber is caused to move to the left；And so on, you can form water between the electrode of left and right two
Flat nanofiber array.
5) after horizontal direction spinning terminates.Two electrodes of vertical direction are grounded again, two electrodes of horizontal direction
High potential U is met, then repeat step 4), in vertical direction spinning.
6) repeat step 4) and 5), it is final to can obtain right-angled intersection stacking nanofiber array.
Embodiment 1：
1) at room temperature, by dimethylformamide (DMF) and tetrahydrofuran (THF) with mass ratio 1：1 mixing is used as solvent, so
Polyurethane (PU) particle, which is added in solvent, afterwards makes its mass fraction be 20%-30%, then is obtained within 2 hours with magnetic stirrer
To spinning solution；
2) adjusting the height of spinning nozzle and position makes the electrode of the vertical face left side ground in its front end, spinning nozzle rear end
It is connected by conduit with syringe pump, spinning nozzle conductive part tap high-voltage DC power supply 5；Then by two electrodes of horizontal direction
Ground connection, two electrodes of vertical direction meet high potential U, about 1-3KV,
3) it is 10-15KV or so to adjust high-voltage DC power supply, is then fed by syringe pump with 0.2-0.8ml/h speed
Spinning solution, solution take electric charge at spinning nozzle and moved along electric field line to the right electrodes of ground connection, meanwhile, solvent is in the air
Constantly volatilization causes solute to solidify, and obtains powered nanofiber, the moment of right electrodes is moved in nanofiber, due to
Nanofiber is powered, and the electrode moment contacted with nanofiber is powered so that electric field deflects, and causes nanofiber to the left
It is mobile；
4) after every layer of spinning 1min, direction of an electric field is switched：Two electrodes of vertical direction are grounded, two of horizontal direction
Electrode meets high potential U, and spinning is carried out in vertical direction.
5) repeat step (4) and (5), 120 layers are superimposed, obtain the polyurethane nanofiber array of right-angled intersection stacking, institute
The diameter of fiber is about 1um, the spacing between fiber is 5-10um.
Embodiment 2：
1) at room temperature, by dimethylformamide (DMF) and tetrahydrofuran (THF) with mass ratio 1：1 mixing is used as solvent, so
Poly(D,L-lactide-co-glycolide (PLGA), which is added in solvent, afterwards makes its mass fraction be 25%-35%, then uses electromagnetic agitation
Device stirs 2 hours and obtains spinning solution；
2) adjusting the height of spinning nozzle and position makes the electrode of the vertical face left side ground in its front end, spinning nozzle rear end
It is connected by conduit with syringe pump, spinning nozzle conductive part tap high-voltage DC power supply 5；Then by two electrodes of horizontal direction
Ground connection, two electrodes of vertical direction meet high potential U, about 1-3KV,
3) it is 10-15KV or so to adjust high-voltage DC power supply, is then fed by syringe pump with 0.2-0.8ml/h speed
Spinning solution, solution take electric charge at spinning nozzle and moved along electric field line to the right electrodes of ground connection, meanwhile, solvent is in the air
Constantly volatilization causes solute to solidify, and obtains powered nanofiber, the moment of right electrodes is moved in nanofiber, due to
Nanofiber is powered, and the electrode moment contacted with nanofiber is powered so that electric field deflects, and causes nanofiber to the left
It is mobile；
4) after every layer of spinning 2min, direction of an electric field is switched：Two electrodes of vertical direction are grounded, two of horizontal direction
Electrode meets high potential U, and spinning is carried out in vertical direction.
5) repeat step 4) and 5), be superimposed 120 layers, obtain right-angled intersection and stack nanofiber array, gained fiber it is straight
Footpath is about 2um, and the spacing between fiber is 2-6um.
Claims (5)
1. a kind of right-angled intersection stacks nanofiber array preparation method, this method comprises the following steps that：
1) at room temperature, polymer is added in the solvent prepared, is stirred to obtain spinning solution；
2) special spinning is received into substrate to be arranged on electrostatic spinning apparatus, described special spinning receives substrate by PCB
Substrate, two pairs of electrodes composition, two pairs of electrodes is arranged in PCB substrate and two pairs of electrodes is located at horizontal and vertical two sides respectively
To；And be grounded two electrodes of horizontal direction, two electrodes of vertical direction connect high voltage power supply；Then spinning nozzle is installed
Make the electrode of vertical some ground connection of face in its front end, spinning nozzle rear end on support, adjusting the height of spinning nozzle and position
It is connected by conduit with syringe pump, spinning nozzle conductive part tap high-voltage DC power supply；
3) spinning solution is fed by syringe pump, adjusts high-voltage DC power supply voltage, start spinning in the horizontal direction；
4) after horizontal direction spinning terminates, then two electrodes ground connection by vertical direction, two electrodes of horizontal direction connect height
Voltage source, then repeat step 3), in vertical direction spinning.
5) repeat step 3) and 4), it is final to can obtain right-angled intersection stacking nanofiber array.
2. right-angled intersection according to claim 1 stacks nanofiber array preparation method, it is characterised in that：Described is poly-
Compound solute is polyoxyethylene, nylon, polyurethane, PLA, polystyrene, polyvinyl alcohol, poly lactic-co-glycolic acid copolymerization
One kind or more in thing, polylactide, polycaprolactone, Kynoar, polymethyl methacrylate, polyvinylpyrrolidone
Kind.
3. right-angled intersection according to claim 1 stacks nanofiber array preparation method, it is characterised in that：Described spinning
The viscosity of silk solution is 0.1~2.0Pas.
4. right-angled intersection according to claim 1 stacks nanofiber array preparation method, it is characterised in that：Described spinning
Silk process be specially：Spinning receives a pair of electrodes ground connection in substrate, and another pair electrode in perpendicular direction connects high potential, electricity
Induction fiber only ground connection this electrode motion and at this forming oriented array electrode.
5. the right-angled intersection that any one of claim 1-4 methods described is prepared stacks nanofiber array.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449357A (en) * | 2018-11-06 | 2019-03-08 | 苏州华骞时代新能源科技有限公司 | A kind of lithium battery diaphragm, preparation method and electrostatic spinning apparatus |
| CN111041566A (en) * | 2019-03-22 | 2020-04-21 | 大连民族大学 | Combined electrostatic spinning experimental device based on gravity stepped electric field |
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| EP2045375B1 (en) * | 2007-10-02 | 2011-03-16 | Stem Cell Technology Company | Apparatus and method for electrospinning 2D- or 3D-structures of micro- or nano-fibrous materials |
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| US20100327494A1 (en) * | 2009-06-22 | 2010-12-30 | University Of South Carolina | Electrospun Fibrous Three-Dimensional Scaffolds with Well-Defined Pore Geometry |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109449357A (en) * | 2018-11-06 | 2019-03-08 | 苏州华骞时代新能源科技有限公司 | A kind of lithium battery diaphragm, preparation method and electrostatic spinning apparatus |
| CN111041566A (en) * | 2019-03-22 | 2020-04-21 | 大连民族大学 | Combined electrostatic spinning experimental device based on gravity stepped electric field |
| CN111041566B (en) * | 2019-03-22 | 2021-11-02 | 大连民族大学 | Combined electrostatic spinning experimental device based on gravity stepped electric field |
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Effective date of registration: 20230330 Address after: Room 202, Building 20, Northwest District, Suzhou Nano City, No. 99, Jinjihu Avenue, Suzhou Industrial Park, Jiangsu Province, 215000 Patentee after: Suzhou guonasi New Material Technology Co.,Ltd. Address before: 310058 Yuhang Tang Road, Xihu District, Hangzhou, Zhejiang 866 Patentee before: ZHEJIANG University |
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Effective date of registration: 20230706 Address after: Room 411, Building B, Yingying Building, No. 99 Tuanjie Road, Nanjing Pilot Free Trade Zone, Jiangsu Province, 211000 Patentee after: Nanjing Beier Times Technology Co.,Ltd. Address before: Room 202, Building 20, Northwest District, Suzhou Nano City, No. 99, Jinjihu Avenue, Suzhou Industrial Park, Jiangsu Province, 215000 Patentee before: Suzhou guonasi New Material Technology Co.,Ltd. |