CN110387588A - A method of preparing the micro nanometer fiber film of core-shell structure using Janus syringe needle electrostatic spinning arranged side by side - Google Patents
A method of preparing the micro nanometer fiber film of core-shell structure using Janus syringe needle electrostatic spinning arranged side by side Download PDFInfo
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- CN110387588A CN110387588A CN201910752517.9A CN201910752517A CN110387588A CN 110387588 A CN110387588 A CN 110387588A CN 201910752517 A CN201910752517 A CN 201910752517A CN 110387588 A CN110387588 A CN 110387588A
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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
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
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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
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
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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
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
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- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The present invention relates to a kind of methods of micro nanometer fiber film that core-shell structure is prepared using Janus syringe needle electrostatic spinning arranged side by side, this syringe needle latter end is made of binary channels, leading portion binary channels is merged into single channel, further obtains core-shell structure fiber to achieve the purpose that mix two kinds of solution.Electrostatic spinning process includes the following steps: in a solvent to stir macromolecule dissolution to being completely dissolved or heating melting obtains spinning precursor liquid；Extract the binary channels end that two kinds of different polymer solution or melt are connected to Janus syringe needle arranged side by side by emulsion tube respectively with syringe；The anode of high voltage power supply is connected to the single channel section of Janus syringe needle arranged side by side, and cathode is connected to reception device；Spinning parameter is set, is powered on, spinning for a period of time, obtains the nano fibrous membrane with core-shell structure.Preparation method of the present invention is simple, and core-shell structure is controllable, and cost is relatively low, can be used for filtering absorption, the fields such as drug supports, tissue engineering bracket.
Description
Technical field
The invention belongs to the preparation technical fields of electrostatic spinning micro nanometer fiber, and in particular to a kind of to utilize electrostatic spinning system
The method of the standby micro-nano electrospinning fibre with core-shell structure, in particular to it is a kind of to utilize Janus syringe needle electrostatic spinning system arranged side by side
The method of the standby micro nanometer fiber film with core-shell structure.
Background technique
High molecular material is since its is from a wealth of sources, and environmentally protective feature is developed rapidly in recent years, molecular weight
Range is larger, many kinds of, has the performance of multiplicity, can satisfy the needs of different occasions.In order to preferably utilize macromolecule
Material, scientists attempt the microstructure by controlling material to change material property, to obtain the height with new function
Molecular material.Electrostatic spinning technique is a kind of method for commonly preparing micro nanometer fiber, and principle is will using high-pressure electrostatic
Macromolecule melt or solution, which stretch, becomes superfine fibre.Typical electrostatic spinning apparatus is by high voltage power supply, propeller and receives dress
Set composition.Wherein, propeller releases solution or macromolecule melt with certain speed, and high voltage power supply generates electric field force and acts on
On charged drop, charged drop forms Taylor cone under the interaction such as electric field force and surface tension, is then drawn into fibre
Dimension falls within the nano fibrous membrane that non-woven fabric-like is formed on receiver.
In recent years, fiber made from single high molecular material is gradually unable to satisfy the demand of people, and people pass through two kinds
The compound performance to fiber of material is adjusted, wherein and core-shell structure is one of fiber composite process typical structure, this
Kind fiber coats another material by a kind of material, other than spinnability can be improved, assign the new performance of material, nucleocapsid
Shell Materials can protect stratum nucleare and not be damaged in structural fibers, and core layer material has the support of certain mechanical property to shell,
It is widely used in the fields such as filtering absorption, medicament slow release and organization bracket.Currently, preparing the main stream approach of core-shell structure fiber
It is by coaxial syringe needle electrostatic spinning, coaxial syringe needle is made of the different double needle of diameter, the injection of stratum nucleare spinning precursor liquid
The lesser syringe needle of diameter, shell spinning precursor liquid inject the syringe needle being relatively large in diameter, can be obtained nucleocapsid by adjusting spinning parameter
Structural fibers.But this syringe needle is due to its complicated internal structure, and processing and manufacturing process is complicated and cleaning is cumbersome, is easy
The residual polyalcohol in syringe needle influences the secondary use of syringe needle.In addition, having its shell of the fiber of core-shell structure and stratum nucleare component
The size-constrained size in needle diameter, it is desirable to the nuclear fibre for obtaining different-thickness needs replacing different syringe needles, production
Inefficiency.And Janus syringe needle is to put together two Medical injection needles side by side, leading portion is fixed on one with adhesive tape
It rises, easily manufactured, low in cost, when cleaning can disassemble two parts syringe needle cleans respectively, does not influence syringe needle
It is used for multiple times.But using Janus syringe needle spinning generally yield be two kinds of high molecular materials and column distribution fiber, can not
Prepare the fiber with nucleocapsid mechanism.Therefore, the present invention proposes on the basis of Janus syringe needle arranged side by side, adds in spinning head leading portion
One combined channel, two sides solution is mixed before spinning.Due to two kinds of solution surface tension differences, gravity it is different,
Surface energy distribution such as minimizes at many reasons, and a kind of solution can envelope another solution in spinning process, to be had
There is the fiber of core-shell structure.The present invention can change stratum nucleare in fiber by adjusting fltting speed, concentration of two kinds of components etc.
Thickness, so that the nanofiber of different-diameter, porosity, micro-structure is prepared, it is easy to operate, it is suitable for industrialized production.
Summary of the invention
In view of this, there is nucleocapsid using Janus syringe needle electrostatic spinning preparation arranged side by side the object of the present invention is to provide a kind of
The method of the micro nanometer fiber film of structure.The present invention is by being carried out two kinds of Polymer Solutions using a kind of Janus syringe needle arranged side by side
Electrospinning is mixed, using two kinds of Polymer Solution surface tension are different, gravity is different, surface energy is distributed minimization principle, preparation
Obtain the nanofiber with core-shell structure.
The purpose of the present invention is what is be achieved through the following technical solutions:
A method of there is the micro nanometer fiber film of core-shell structure, tool using Janus syringe needle electrostatic spinning preparation arranged side by side
Steps are as follows for body:
A, two kinds of different polymeric solids are separately added into stirring and dissolving in solvent, or are heated to molten condition and obtain two
The high molecular spinning precursor liquid of kind, two kinds of precursor liquid mass concentrations are all 1%~50%；
B, two kinds of spinning precursor liquids obtained in two syringe aspiration step A, then two syringes are fixed respectively
On different propulsion pumps, two syringes are connected with the binary channels section of Janus syringe needle arranged side by side with silicone tube, high voltage power supply
Anode is connected to the single channel section of syringe needle arranged side by side, and adjusting single channel section needle length is 15~40cm, and cathode is connected to reception dress
It sets；
C, 4 electrospinning parameters are set on the basis of step B.Voltage is 8~30kV, the corresponding aluminium of syringe
The distance of foil is 5~25cm, and promoting the fltting speed of pump 1 is 0.1~5mL/h, and promoting the fltting speed of pump 2 is 0.1~5mL/
h.Controlling environment temperature simultaneously is 10~30 DEG C, and humidity is 10%~80%, then powers on, tool can be collected on receiver
There is the core-shell electrospun fiber of different internal structure.
Wherein, the high molecular material is selected from polylactic acid, Kynoar, polyvinyl alcohol, polyacrylonitrile, poly- methyl-prop
E pioic acid methyl ester, polyurethane, polysulfones, polystyrene, polyvinylpyrrolidone, polypropylene, polyethylene, polyvinyl chloride, polyacrylic acid,
Polyvinyl butyral, polyarylate, butyl polyacrylate, polyethylene terephthalate or polybutylene terephthalate, fibre
One of dimension element and its derivative, hyaluronic acid, sodium alginate, gelatin, chitosan, chitin, lignin.
The solvent is selected from water, ethyl alcohol, acetone, chloroform, methylene chloride, ethyl alcohol, DMAC N,N' dimethyl acetamide, four chlorinations
Carbon, n-hexane, tetrahydrofuran, in pyridine, toluene, dimethylbenzene, methyl ethyl ketone, paraformaldehyde, dimethyl sulfoxide, tetrahydro difluoro,
Dimethylformamide, lithium chloride, dimethyl acetamide, sodium hydroxide, urea, ionic liquid, 3 methylimidazole villaumite of 1- butyl, ammonia
One or more of based compound salt, potassium rhodanide, sodium sulfocyanate, lithium rhodanate.
The nanofiber with core-shell structure is successfully prepared using Janus syringe needle electrostatic spinning technique arranged side by side.Static Spinning
Silk device is made of high voltage power supply, propeller and reception device.Wherein, propeller releases solution with certain speed, high-voltage electricity
Source generates electric field force and simultaneously acts on charged drop, and charged drop is formed under the interaction of electric field force and surface tension etc.
Taylor cone is then drawn into fiber and falls within the nano fibrous membrane for forming non-woven fabric-like on receiver.
The present invention uses Janus syringe needle electrostatic spinning apparatus arranged side by side, and used Janus syringe needle arranged side by side is by two parts
Composition, leading portion are made of binary channels, and two sides passage length is all 15~40mm, and internal diameter is all 0.03~1.7mm, and outer diameter is all
0.1~2mm, latter end binary channels are merged into a single channel, and single channel length is 15~40mm, channel internal diameter 0.06 after merging
~3.5mm, outer diameter are 0.19~4mm.When spinning, two solution channels are injected separately into different Polymer Solutions, at syringe needle
It is mixed, due to two kinds of Polymer Solution surface tension are different, gravity is different, surface energy is distributed minimum etc., one
Kind solution can be coated on the outer layer of another solution.Mixed solution forms jet stream under conditions of high voltage power supply, blend solution
Solvent cures are deposited on receiver board, and deposition a period of time can be obtained the tunica fibrosa with core-shell structure.In the present invention, pass through
Adjust the fltting speed of Polymer Solution, thus it is possible to vary the diameter and shell thickness of gained nuclear fibre, to obtain having not
With the electrospinning fibre of core-shell structure, when a kind of Polymer Solution fltting speed 0.5mL/h, another Polymer Solution fltting speed
When for 0.3mL/h, continuous electro-spinning fiber can be obtained, and the core-shell structure fibre diameter is most carefully 332nm.
Compared with prior art, the invention has the benefit that
1, the present invention is successfully prepared the micro-nano fibre with core-shell structure by Janus syringe needle electrostatic spinning technique arranged side by side
Tie up film.
2, nuclear fibre preparation method proposed by the present invention is simple, structure-controllable, used Janus syringe needle processing arranged side by side
Simply, it is convenient to clean and repairs, raw materials used from a wealth of sources, production cost is low, can be used for industrialized production.
3, the present invention can obtain having in difference by adjusting concentration, fltting speed, the needle length of Polymer Solution
The nanofiber of portion's micro-structure is suitable for unused application places.
Since process flow is simple, technological parameter is easily adjusted, and the quality of materials of preparation is light, and diameter is small, and large specific surface area is being inhaled
Attached filtering, drug supports, field of tissue engineering technology has a wide range of applications.
Detailed description of the invention
Fig. 1 a- Fig. 1 b is the composite nano fiber appearance structure picture that the embodiment of the present invention 1 obtains；
Fig. 2 a- Fig. 2 b is the composite nano fiber appearance structure picture that the embodiment of the present invention 2 obtains；
Fig. 3 a- Fig. 3 b is the composite nano fiber appearance structure picture that the embodiment of the present invention 3 obtains；
Fig. 4 a- Fig. 4 b is the composite nano fiber appearance structure picture that the embodiment of the present invention 4 obtains；
Fig. 5 a- Fig. 5 b is the composite nano fiber appearance structure picture that the embodiment of the present invention 5 obtains；
Fig. 6 is the schematic diagram of the two-in-one syringe needle arranged side by side of the present invention.
Specific embodiment
The specific embodiment of the invention is as follows, as to further explanation of the invention:
By the present invention in that having the fiber of core-shell structure with syringe needle arranged side by side preparation, i.e., add a merging in syringe needle leading portion arranged side by side
Channel, two sides solution is mixed before spinning, utilizes that two kinds of solution surface tension differences, gravity are different, surface energy
The many reasons such as amount distribution minimum make a kind of solution envelope another solution, to obtain the fibre with core-shell structure
Dimension.The present invention can change the diameter and shell thickness of fiber by adjusting the fltting speed of two kinds of components, and controllable preparation is different
The nanofiber of diameter, porosity, micro-structure, it is easy to operate, it is suitable for industrialized production.
Embodiment 1
A1, it weighs 1~10g lithium chloride and is put into beaker 1, add 1~10g dimethyl acetamide.In magnetic stirring apparatus
Upper stirring 2 hours, is clarified and uniform cosolvent；Cellulose powder is added into uniformly mixed cosolvent, by beaker 1
It is put into 90 DEG C of oil bath pan and stirs 72 hours, obtain uniformly mixed cellulose solution；
A2, it measures in 1~10mL acetone addition beaker 2, adds 1~10mL dimethylformamide.In magnetic stirring apparatus
Upper stirring 2 hours, is clarified and uniform cosolvent；It is solid that 1~10g Kynoar is added into uniformly mixed cosolvent
Beaker 2 is put into 60 DEG C of oil bath pan and stirs 1 hour by body, is clarified and uniform Kynoar solution；
B, the solution in 2mL~3mL step A1 in beaker 1 is measured, which is injected into syringe 1；Measurement 4mL~
Solution in 5mL step A2 in beaker 2, which is injected into syringe 2；Two syringes are separately fixed at difference again
Propulsion pump on, two syringe needles are connected with the binary channels section of Janus syringe needle arranged side by side respectively with silicone tube, adjust simultaneously
Column syringe needle single channel section passage length is 25mm, and high-voltage power cathode is connected to the single channel section of Janus syringe needle arranged side by side, and cathode connects
It connects on the reception device；
C, the electrospinning parameters of 4 high voltage power supplies are set on the basis of step B.High-voltage power voltage is 15kV, syringe
The distance of corresponding aluminium foil is 15cm, and promoting the fltting speed of pump 1 is 0.3mL/h, and the fltting speed of propulsion pump 2 is
0.5mL/h.Controlling environment temperature simultaneously is 10~30 DEG C, and humidity is 10%~80%, is then powered on, meeting in reception device
The electrospinning fibre with core-shell structure is received, the pattern and diameter for obtaining fiber are distributed as shown in Fig. 1 a- Fig. 1 b.
Embodiment 2
A1, it weighs 1~10g lithium chloride and is put into beaker 1, add 1~10g dimethyl acetamide.In magnetic stirring apparatus
Upper stirring 2 hours, is clarified and uniform cosolvent；Cellulose powder is added into uniformly mixed cosolvent, by beaker 1
It is put into 90 DEG C of oil bath pan and stirs 72 hours, obtain uniformly mixed cellulose solution；
A2, it measures in 1~10mL acetone addition beaker 2, adds 1~10mL dimethylformamide.In magnetic stirring apparatus
Upper stirring 2 hours, is clarified and uniform cosolvent；It is solid that 1~10g Kynoar is added into uniformly mixed cosolvent
Beaker 2 is put into 60 DEG C of oil bath pan and stirs 1 hour by body, is clarified and uniform Kynoar solution；
B, the solution in 2mL~3mL step A1 in beaker 1 is measured, which is injected into syringe 1；Measurement 4mL~
Solution in 5mL step A2 in beaker 2, which is injected into syringe 2；Two syringes are separately fixed at difference again
Propulsion pump on, two syringe needles are connected with the binary channels section of Janus syringe needle arranged side by side respectively with silicone tube, adjust simultaneously
Column syringe needle single channel section passage length is 25mm, and high-voltage power cathode is connected to the single channel section of Janus syringe needle arranged side by side, and cathode connects
It connects on the reception device；
C, the electrospinning parameters of 4 high voltage power supplies are set on the basis of step B.High-voltage power voltage is 15kV, syringe
The distance of corresponding aluminium foil is 15cm, and promoting the fltting speed of pump 1 is 0.3mL/h, and the fltting speed of propulsion pump 2 is
0.3mL/h.Controlling environment temperature simultaneously is 10~30 DEG C, and humidity is 10%~80%, is then powered on, meeting in reception device
The electrospinning fibre with core-shell structure is received, the pattern and diameter for obtaining fiber are distributed as shown in Fig. 2 a- Fig. 2 b.
Embodiment 3
A1, it weighs 1~10g lithium chloride and is put into beaker 1, add 1~10g dimethyl acetamide.In magnetic stirring apparatus
Upper stirring 2 hours, is clarified and uniform cosolvent；Cellulose powder is added into uniformly mixed cosolvent, by beaker 1
It is put into 90 DEG C of oil bath pan and stirs 72 hours, obtain uniformly mixed cellulose solution；
A2, it measures in 1~10mL acetone addition beaker 2, adds 1~10mL dimethylformamide.In magnetic stirring apparatus
Upper stirring 2 hours, is clarified and uniform cosolvent；It is solid that 1~10g Kynoar is added into uniformly mixed cosolvent
Beaker 2 is put into 60 DEG C of oil bath pan and stirs 1 hour by body, is clarified and uniform Kynoar solution；
B, the solution in 2mL~3mL step A1 in beaker 1 is measured, which is injected into syringe 1；Measurement 4mL~
Solution in 5mL step A2 in beaker 2, which is injected into syringe 2；Two syringes are separately fixed at difference again
Propulsion pump on, two syringe needles are connected with the binary channels section of Janus syringe needle arranged side by side respectively with silicone tube, adjust simultaneously
Column syringe needle single channel section passage length is 25mm, and high-voltage power cathode is connected to the single channel section of Janus syringe needle arranged side by side, and cathode connects
It connects on the reception device；
C, the electrospinning parameters of 4 high voltage power supplies are set on the basis of step B.High-voltage power voltage is 15kV, syringe
The distance of corresponding aluminium foil is 15cm, and promoting the fltting speed of pump 1 is 0.3mL/h, and the fltting speed of propulsion pump 2 is
0.4mL/h.Controlling environment temperature simultaneously is 10~30 DEG C, and humidity is 10%~80%, is then powered on, meeting in reception device
The electrospinning fibre with core-shell structure is received, the pattern and diameter for obtaining fiber are distributed as shown in Fig. 3 a- Fig. 3 b.
Embodiment 4
A1, it weighs 1~10g lithium chloride and is put into beaker 1, add 1~10g dimethyl acetamide.In magnetic stirring apparatus
Upper stirring 2 hours, is clarified and uniform cosolvent；Cellulose powder is added into uniformly mixed cosolvent, by beaker 1
It is put into 90 DEG C of oil bath pan and stirs 72 hours, obtain uniformly mixed cellulose solution；
A2, it measures in 1~10mL acetone addition beaker 2, adds 1~10mL dimethylformamide.In magnetic stirring apparatus
Upper stirring 2 hours, is clarified and uniform cosolvent；It is solid that 1~10g Kynoar is added into uniformly mixed cosolvent
Beaker 2 is put into 60 DEG C of oil bath pan and stirs 1 hour by body, is clarified and uniform Kynoar solution；
B, the solution in 2mL~3mL step A1 in beaker 1 is measured, which is injected into syringe 1；Measurement 4mL~
Solution in 5mL step A2 in beaker 2, which is injected into syringe 2；Two syringes are separately fixed at difference again
Propulsion pump on, two syringe needles are connected with the binary channels section of Janus syringe needle arranged side by side respectively with silicone tube, adjust simultaneously
Column syringe needle single channel section passage length is 25mm, and high-voltage power cathode is connected to the single channel section of Janus syringe needle arranged side by side, and cathode connects
It connects on the reception device；
C, the electrospinning parameters of 4 high voltage power supplies are set on the basis of step B.High-voltage power voltage is 15kV, syringe
The distance of corresponding aluminium foil is 15cm, and promoting the fltting speed of pump 1 is 0.3mL/h, and the fltting speed of propulsion pump 2 is
0.6mL/h.Controlling environment temperature simultaneously is 10~30 DEG C, and humidity is 10%~80%, is then powered on, meeting in reception device
The electrospinning fibre with core-shell structure is received, the pattern for obtaining fiber and diameter distribution are as shown in Figs. 4 a-b.
Embodiment 5
A1, it weighs 1~10g lithium chloride and is put into beaker 1, add 1~10g dimethyl acetamide.In magnetic stirring apparatus
Upper stirring 2 hours, is clarified and uniform cosolvent；Cellulose powder is added into uniformly mixed cosolvent, by beaker 1
It is put into 90 DEG C of oil bath pan and stirs 72 hours, obtain uniformly mixed cellulose solution；
A2, it measures in 1~10mL acetone addition beaker 2, adds 1~10mL dimethylformamide.In magnetic stirring apparatus
Upper stirring 2 hours, is clarified and uniform cosolvent；It is solid that 1~10g Kynoar is added into uniformly mixed cosolvent
Beaker 2 is put into 60 DEG C of oil bath pan and stirs 1 hour by body, is clarified and uniform Kynoar solution；
B, the solution in 2mL~3mL step A1 in beaker 1 is measured, which is injected into syringe 1；Measurement 4mL~
Solution in 5mL step A2 in beaker 2, which is injected into syringe 2；Two syringes are separately fixed at difference again
Propulsion pump on, two syringe needles are connected with the binary channels section of Janus syringe needle arranged side by side respectively with silicone tube, adjust simultaneously
Column syringe needle single channel section passage length is 25mm, and high-voltage power cathode is connected to the single channel section of Janus syringe needle arranged side by side, and cathode connects
It connects on the reception device；
C, the electrospinning parameters of 4 high voltage power supplies are set on the basis of step B.High-voltage power voltage is 15kV, syringe
The distance of corresponding aluminium foil is 20cm, and promoting the fltting speed of pump 1 is 0.3mL/h, and the fltting speed of propulsion pump 2 is
0.8mL/h.Controlling environment temperature simultaneously is 10~30 DEG C, and humidity is 10%~80%, is then powered on, meeting in reception device
The electrospinning fibre with core-shell structure is received, the pattern and diameter for obtaining fiber are distributed as shown in Fig. 5 a- Fig. 5 b.
Claims (5)
1. a kind of method for the micro nanometer fiber film for being prepared core-shell structure using Janus syringe needle electrostatic spinning arranged side by side, feature are existed
In, comprising the following steps:
A, two kinds of different polymeric solids are separately added into stirring and dissolving in solvent, or are heated to molten condition and obtain two kinds of height
The spinning precursor liquid of molecule, two kinds of precursor liquid mass concentrations are all 1%~50%；
B, two kinds of spinning precursor liquids obtained in two syringe aspiration step A, then two syringes are separately fixed at not
On same propulsion pump, two syringes are connected with the binary channels section of Janus syringe needle arranged side by side with silicone tube, high-voltage power cathode
It is connected to the single channel section of syringe needle arranged side by side, adjusting single channel section needle length is 15~40cm, and cathode connects on the reception device；
C, 4 electrospinning parameters are set on the basis of step B；Voltage is 8~30kV, the corresponding aluminium foil of syringe
Distance is 5~25cm, and promoting the fltting speed of pump 1 is 0.1~5mL/h, and promoting the fltting speed of pump 2 is 0.1~5mL/h；Together
When, control environment temperature is 10~30 DEG C, and humidity is 10%~80%, is then powered on, and high voltage power supply generates electric field force simultaneously
It acts on charged drop, charged drop forms Taylor cone under the interaction of electric field force and surface tension etc., then quilt
It is drawn into fiber and falls within the micro nanometer fiber film for being formed on receiver and there are different core-shell structures.
2. a kind of micro-nano fibre for preparing core-shell structure using Janus syringe needle electrostatic spinning arranged side by side according to claim 1
The method for tieing up film, it is characterised in that: the Janus syringe needle arranged side by side consists of two parts, and latter end is made of binary channels, two wing passages
Length is all 15~40mm, and internal diameter is all 0.03~1.7mm, and outer diameter is all 0.1~2mm, and leading portion binary channels is merged into a list
Channel, single channel length is 15~40mm after merging, and channel internal diameter is 0.06~3.5mm, and outer diameter is 0.19~4mm.
3. a kind of micro-nano fibre for preparing core-shell structure using Janus syringe needle electrostatic spinning arranged side by side according to claim 1
The method for tieing up film, it is characterised in that: the solvent is selected from water, ethyl alcohol, acetone, chloroform, toluene, dimethylbenzene, methyl ethyl ketone, poly
Formaldehyde, dimethyl sulfoxide, tetrahydro difluoro, dimethylformamide, lithium chloride, dimethyl acetamide, sodium hydroxide, urea, ion
One of liquid, 3 methylimidazole villaumite of 1- butyl, amino-compound salt, potassium rhodanide, sodium sulfocyanate, lithium rhodanate are several
Kind.
4. a kind of micro-nano fibre for preparing core-shell structure using Janus syringe needle electrostatic spinning arranged side by side according to claim 1
The method for tieing up film, it is characterised in that: the high molecular material is selected from polylactic acid, Kynoar, polyvinyl alcohol, polypropylene
Nitrile, polymethyl methacrylate, polyurethane, polysulfones, polystyrene, polyvinylpyrrolidone, polypropylene, polyethylene, polychlorostyrene second
Alkene, polyacrylic acid, polyvinyl butyral, polyarylate, butyl polyacrylate, polyethylene terephthalate, poly- terephthaldehyde
One of sour fourth diester, cellulose and its derivates, hyaluronic acid, sodium alginate, gelatin, chitosan, chitin, lignin
Or it is several.
5. a kind of micro-nano fibre for preparing core-shell structure using Janus syringe needle electrostatic spinning arranged side by side according to claim 1
The method for tieing up film, it is characterised in that: described two Polymer Solution fltting speeds are respectively 0.5mL/h and 0.3mL/h.
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|---|---|---|---|---|
| CN112391736A (en) * | 2020-11-03 | 2021-02-23 | 吉林大学 | Hierarchical fiber membrane with three-branched surface morphology and preparation method and application thereof |
| CN112919967A (en) * | 2021-03-02 | 2021-06-08 | 青海高原地沣肥业有限公司 | Method for preparing organic fertilizer from municipal sludge |
| CN114351355A (en) * | 2021-12-09 | 2022-04-15 | 南方科技大学 | Method for preparing composite film with gradient wetting surface |
| CN114481364A (en) * | 2021-12-31 | 2022-05-13 | 江苏大学 | Janus type electromagnetic coupling microwave absorbent and preparation method thereof |
| CN114672889A (en) * | 2022-03-22 | 2022-06-28 | 温州大学 | Core-shell structure piezoelectric fiber force-control coaxial electrostatic spinning process |
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| CN112391736A (en) * | 2020-11-03 | 2021-02-23 | 吉林大学 | Hierarchical fiber membrane with three-branched surface morphology and preparation method and application thereof |
| CN112919967A (en) * | 2021-03-02 | 2021-06-08 | 青海高原地沣肥业有限公司 | Method for preparing organic fertilizer from municipal sludge |
| CN112919967B (en) * | 2021-03-02 | 2023-06-13 | 青海高原地沣肥业有限公司 | Method for preparing organic fertilizer from municipal sludge |
| CN114351355A (en) * | 2021-12-09 | 2022-04-15 | 南方科技大学 | Method for preparing composite film with gradient wetting surface |
| CN114481364A (en) * | 2021-12-31 | 2022-05-13 | 江苏大学 | Janus type electromagnetic coupling microwave absorbent and preparation method thereof |
| CN114672889A (en) * | 2022-03-22 | 2022-06-28 | 温州大学 | Core-shell structure piezoelectric fiber force-control coaxial electrostatic spinning process |
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