CN104562233A - Collateral spinning head wrapped with Teflon and application thereof - Google Patents

Collateral spinning head wrapped with Teflon and application thereof Download PDF

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Publication number
CN104562233A
CN104562233A CN201510024790.1A CN201510024790A CN104562233A CN 104562233 A CN104562233 A CN 104562233A CN 201510024790 A CN201510024790 A CN 201510024790A CN 104562233 A CN104562233 A CN 104562233A
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teflon
syringe
arranged side
spinneret
metal capillary
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CN201510024790.1A
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CN104562233B (en
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余灯广
王霞
邹华
徐影
杨晨
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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Abstract

The invention discloses a collateral spinning head wrapped with Teflon and an application thereof. The collateral spinning head wrapped with the Teflon comprises an L-shaped metal capillary and a cross-line-shaped metal capillary which are both 0.5mm in inner diameter, a connector and a Teflon sleeve 2mm in inner diameter, wherein one edge of the L-shaped metal capillary and the cross-line-shaped metal capillary are parallel and abut against each other, outlet ends of the L-shaped metal capillary and the cross-line-shaped metal capillary are flush, the exteriors of the two metal capillaries with the outlet ends flush are jointed with an inlet end of the Teflon sleeve, an outlet end of the Teflon sleeve is stretched out of the outlet ends of the two metal capillaries with the outlet ends flush, the stretching length of the Teflon sleeve is 0.2mm, and an inlet end of the cross-line-shaped metal capillary is directly inserted into one end of the connector and jointed with the end of the connector. When a collateral electric spinning device with the collateral spinning head wrapped with the Teflon is used for electric spinning, a collateral nanometer fiber of an integrated structure can be prepared through a single step under a high voltage electric field.

Description

A kind of Teflon wraps up spinneret arranged side by side and application thereof
Technical field
The invention belongs to structure nano fiber material preparation field, particularly relate to a kind of Teflon and wrap up spinneret arranged side by side and application thereof.
Background technology
High-voltage electrostatic spinning technology is the nano-fabrication technique of one (top-down) from top to bottom, make every effort to overcome by extra electric field the surface tension of liquid and viscoelastic power that take the most advanced and sophisticated drop of shower nozzle and form jet, under electrostatic repulsion, Coulomb force and surface tension acting in conjunction, liquid jet after being atomized is by high frequency flexural, drawing, division, drafted thousands of times within a few tens of milliseconds, obtains nano-scale fiber through solvent evaporates or melt cooling at receiving terminal.This technical matters process is simple, manipulation is convenient, selection material is in extensive range, controllability is strong and can prepare the nanofiber with microstructure characteristic by sprinkler design, be considered to a kind of method most possibly realizing continuous nano-fibre suitability for industrialized production, apply this technology and prepare functional nano-fiber there is the expection of good prospect.
Applying high voltage electrospun nanofibers process is simple, but complicated mechanism.Affect many factors prepared by nanofiber, comprise the parameter (concentration, viscosity, surface tension, electric conductivity etc.) of spinning solution, electrospinning processes operating parameter (voltage, flow, fiber accept distance etc.) and environmental factor (humidity, temperature, vacuum etc.) (Agarwal S, Greiner A, Wendorff JH. Functional Materials by Electrospinning of Polymers. Prog. Poly. Sci. 2013,38,963-991.).Use electrospinning to prepare the nanofiber with architectural feature then more complicated, need to consider the compatibility between different fluid and the behavior under high voltage electric field.For electrospinning arranged side by side, because two fluids is with identical electric charge, is very easy to mutually repel and the nanofiber arranged side by side of structural integrity cannot be formed.This makes the thousands of section of report about core sheath nanofiber, and about document only more than ten sections of parallel construction nanofiber.
In document limited at present, for electrospinning arranged side by side, substantially be all that employing two metal capillary arranged side by side is as spinneret (Liu Z, Sun D D, Guo P, Leckie JO. An Efficient Bicomponent TiO2/SnO2 Nanofiber Photocatalyst Fabricated by Electrospinning with a Side-by-Side dual Spinneret Method. Nano Lett. 2007,7,1081-1085.).This traditional way, need two fluids all have good can spinning properties, and there is good compatibility each other, this strongly limits the extensive use of this basic structure.The present invention is just for the limitation of tradition electrospinning arranged side by side, invent a kind of spinneret arranged side by side that is brand-new, that meet fluid moving law under high voltage electric field, develop a kind of electrospinning processes arranged side by side newly, and apply the nanofiber arranged side by side that structural integrity is prepared in this invention.
Summary of the invention
Object of the present invention is difficult to prepare the nanofiber with parallel construction feature technical problem in order to solve prior art is to provide a kind of Teflon and wraps up spinneret arranged side by side, utilizes the electric spinning equipment arranged side by side wrapping up spinneret arranged side by side with this Teflon can prepare the nanofiber with parallel construction feature.
Technical scheme of the present invention
A kind of Teflon wraps up spinneret arranged side by side, comprises two metal capillaries, a jointing, also comprises a Teflon sleeve pipe in addition; Teflon casing inner diameter is 2mm, and the internal diameter of two metal capillaries is 0.5mm;
In two metal capillaries, a metal capillary is L-type, and another root metal capillary is yi word pattern;
The metal capillary of L-type while parallelly with the metal capillary of yi word pattern to be close to, and the port of export of metal capillary of the parallel L-type be close to flushes with the port of export of the metal capillary of yi word pattern, the outside of two metal capillaries that the port of export flushes and the arrival end of Teflon sleeve pipe are socketed, the port of export of Teflon sleeve pipe reaches outside the port of export of two metal capillaries that the port of export flushes, and its extension elongation is 0.2mm;
One end that the arrival end of the metal capillary of yi word pattern directly inserts jointing is carried out cover and is connected.
A kind of electric spinning equipment arranged side by side wrapping up spinneret arranged side by side with above-mentioned Teflon, comprise the first axial flow syringe pump, the second axial flow syringe pump, the first syringe, the second syringe, silicone tube, Teflon wrap up spinneret arranged side by side, high pressure generator, fiber accepts plate and earthing or grounding means;
The entrance that Teflon wraps up the metal capillary of the L-type of spinneret arranged side by side is connected with the first syringe by silicone tube, second syringe directly inserts Teflon and wraps up in the other end of the jointing of spinneret arranged side by side, first syringe is arranged on the first axial flow syringe pump, and the second syringe is arranged on axial flow syringe pump;
First axial flow syringe pump, the second axial flow syringe pump regulates and controls the propelling speed of the first syringe and the second syringe respectively, and high pressure generator and Teflon wrap up spinneret arranged side by side and be directly connected to provide high-pressure electrostatic by wire;
Teflon wraps up in spinneret arranged side by side, and the port of export of Teflon sleeve pipe is relative with the center of fiber accepts plate, and distance is 20cm, and high pressure generator and fiber accepts plate are jointly by earthing or grounding means ground connection;
Described high pressure generator provides voltage to be 0 ~ 60kV;
The first described syringe and the second syringe are commercially available medical grade articles.
Described silicone tube internal diameter is 2mm, wall thickness 1mm.
Utilize the above-mentioned electric spinning equipment arranged side by side with decentralized casing spinneret arranged side by side to carry out to two fluids the method that electrospinning prepares parallel construction nanofiber, concrete steps are as follows:
In the first syringe, add the first spinning liquid, in the second syringe, add the second spinning liquid, by electric field action, the preparation of parallel construction nanofiber can be carried out;
For different spinning liquid in preparation process, adopt corresponding flow and voltage, the parallel construction nanofiber of different structural integrities can be prepared.
Beneficial effect of the present invention
Teflon of the present invention wraps up two metal capillaries arranged side by side that spinneret arranged side by side is compared traditional, has following advantage:
In traditional metal capillary spinneret arranged side by side, fluid only has a point to contact, and spinneret of the present invention has a face for fluid-phase contact, and on the time, teflon tube guarantees that the fluid on both sides of charging first is converged, and then out forms taylor cone arranged side by side together.
In traditional metal capillary spinneret arranged side by side, the charging of fluid is irregular shape, is unfavorable for that taylor cone is formed; And Teflon of the present invention to wrap up spinneret arranged side by side be unified round-shaped, be conducive to the formation of taylor cone.These advantages derive from Teflon of the present invention and wrap up spinning arranged side by side and meet the dirty bulk charging of high voltage electric field and moving law first watch.
Because teflon is a kind of electric insulation lubricious material, except ensureing two fluids well and not being separated because of electrostatic repulsion, the stretching action of inside pipe wall to fluid can be reduced, less acting in opposition is produced to electric field force, promote generation and the startup of electrospinning arranged side by side, and the mutual dispersal behavior that the length of 0.2mm can not cause two fluids to cause because of Long contact time.
In sum, Teflon of the present invention wrap up spinneret arranged side by side application simple, easy to operate, be easy to control, single step can prepare the nanofiber with parallel construction feature under high voltage electric field, and production can be amplified on a large scale by increasing spinneret quantity.
Accompanying drawing explanation
Fig. 1, Teflon wrap up spinneret monnolithic case schematic diagram arranged side by side
Teflon in Fig. 2, embodiment 1 wraps up the sectional view of spinneret arranged side by side;
Fig. 3, wrap up the structural representation of the electric spinning equipment arranged side by side of spinneret arranged side by side with Teflon described in embodiment 1;
The Teflon of Fig. 4, embodiment 1 wraps up spinneret arranged side by side and spinneret arranged side by side of the prior art at the dirty bulk charging of high voltage electric field and moving law key diagram, and wherein 1 is tradition spinneret side by side, and 2 is that the Teflon of embodiment 1 wraps up spinneret arranged side by side;
The transmission electron microscope picture of the PCL/PMMA parallel construction nanofiber of Fig. 5, Application Example 1 gained;
The scanning electron microscope (SEM) photograph of Fig. 6, application comparative examples 1 gained PVP/PMMA parallel construction nano fiber.
Detailed description of the invention
Also by reference to the accompanying drawings the present invention is set forth further below by specific embodiment, but do not limit the present invention.
Flied emission transmission electron microscope used in Application Example of the present invention is Tokyo JEOL Products, and model is 2100F;
Field emission electron ESEM is FEI Co. of import Holland product, Quanta 450 type.
embodiment 1
A kind of Teflon wraps up spinneret arranged side by side, and its structural representation as shown in Figure 1 and Figure 2, comprises metal capillary 1, metal capillary 2, jointing 4, also comprises a Teflon sleeve pipe 3 in addition; Teflon sleeve pipe 3 internal diameter is 2mm, and the internal diameter of metal capillary 1 and metal capillary 2 is 0.5mm;
Metal capillary 1 is L-type, and metal capillary 2 is yi word pattern;
The metal capillary 1 of L-type while parallelly with the metal capillary 2 of yi word pattern to be close to and spot-welded together, and the port of export of the metal capillary 1 of the parallel L-type be close to flushes with the port of export of the metal capillary 2 of yi word pattern, the outside of metal capillary 1,2 that the port of export flushes and the arrival end of Teflon sleeve pipe 3 are socketed, the port of export of Teflon sleeve pipe 3 reaches outside the port of export of the metal capillary 1,2 that the port of export flushes, and its extension elongation is 0.2mm;
One end that the arrival end of the metal capillary 1 of yi word pattern directly inserts jointing 4 is carried out cover and is connected.
embodiment 2
A kind of electric spinning equipment arranged side by side wrapping up spinneret arranged side by side with the Teflon described in embodiment 1, its structural representation as shown in Figure 3, comprise the first axial flow syringe pump 1, second axial flow syringe pump 2, first syringe 3, second syringe 4, silicone tube 5, Teflon wrap up spinneret 6 arranged side by side, high pressure generator 7, fiber accepts plate 8 and earthing or grounding means 9;
The entrance that Teflon wraps up the metal capillary of the L-type of spinneret 6 arranged side by side is connected with the first syringe 3 by silicone tube 5, second syringe 4 directly inserts Teflon and wraps up in the other end of the jointing of spinneret 6 arranged side by side, first syringe 3 is arranged on the first axial flow syringe pump 1, and the second syringe 4 is arranged on axial flow syringe pump 2;
First axial flow syringe pump 3, second axial flow syringe pump 4 regulates and controls the propelling speed of the first syringe 1 and the second syringe 2 respectively, and high pressure generator 7 and Teflon wrap up spinneret 6 arranged side by side and be directly connected to provide high-pressure electrostatic by wire;
Teflon wraps up in spinneret 6 arranged side by side, and the port of export of Teflon sleeve pipe 3 is relative with the center of fiber accepts plate 8, and distance is 20cm, and high pressure generator 7 and fiber accepts plate 8 are jointly by earthing or grounding means 9 ground connection;
Described high pressure generator 7 provides voltage to be 0 ~ 60kV;
The first described syringe 3 and the second syringe 4 are commercially available medical grade articles.
Described silicone tube internal diameter is 2mm, wall thickness 1mm;
Fiber accepts plate 8 is adopt one piece of hardboard of aluminium foil parcel to make;
First axial flow syringe pump 1, second axial flow syringe pump 2 is import U.S. product, KDS100 type, U.S. Cole-Parmer ?company produces;
High pressure generator 7 is Shanghai Su Te Products, ZGF2000 type.
Above-mentioned Teflon used wraps up spinneret arranged side by side and spinneret arranged side by side of the prior art at the dirty bulk charging of high voltage electric field and moving law key diagram as shown in Figure 4, wherein 1 is tradition spinneret side by side, 2 wrap up spinneret arranged side by side for the Teflon of the embodiment of the present invention 1, as can be seen from figure 1, tradition side by side spinneret is that one " point " carries out fluid contact, an irregular charging face; As can be seen from figure 2, it is " face " fluid contact that Teflon of the present invention wraps up spinneret arranged side by side, a regular charging face, outlet Teflon surface is little to fluid drag force, Teflon is a kind of insulating materials simultaneously, be conducive to preventing high-pressure electrostatic can scattering and more concentrate on flow out the mouth of pipe fluid on, therefore Teflon wraps up the effect that spinneret arranged side by side is conducive to playing electric field, forms a complete taylor cone to promote startup and the generation of electrospinning arranged side by side.
Namely Teflon of the present invention wraps up spinneret arranged side by side can effectively to prevent just because of the contact in " face " two strand from having the fluid of identical charges separated from one another because of mutually repelling, and is conducive to the formation of the nanofiber arranged side by side of complete structure.Simultaneously Teflon of the present invention wraps up spinneret arranged side by side provides a complete circle charging face, stops scattering and disappearing of electric energy, is conducive to the effect playing electric field, forms a complete taylor cone to promote startup and the generation of electrospinning arranged side by side.
application Example 1
Utilize the electric spinning equipment arranged side by side wrapping up spinneret arranged side by side with Teflon described in embodiment 2 to carry out electrospinning to two fluids, to prepare ε-polycaprolactone/plexiglass parallel construction nanofiber, step is as follows:
(1), the preparation of spinning solution
First spinning solution, mass percent concentration is ε-polycaprolactone (hereinafter referred to as the PCL) solution of 8%, and its compound method is as follows:
Molecular weight by 8g is 130, the PCL of 000 joins chloroform and the N of 92g, in the mixed liquor of dinethylformamide composition, stir and obtain the PCL solution that mass percent concentration is 8%, in the mixed liquor that described chloroform and DMF form, calculate by volume, chloroform: DMF is 8:2;
Second spinning solution, mass percent concentration is plexiglass (hereinafter referred to as the PMMA) solution of 7%, and its compound method is as follows:
Molecular weight by 7g is 900, the plexiglass of 000 joins carrene and the N of 93g, in the mixed liquor of N-dimethylacetylamide composition, stir and obtain the plexiglass solution that mass percent concentration is 7%, in the mixed liquor that described carrene and DMA form, calculate by volume, i.e. carrene: DMA is 90:10;
(2), by the first spinning solution of step (1) gained and the second spinning solution join respectively in the first syringe 3 and the second syringe 4, then open the first axial flow syringe pump 1 and the second axial flow syringe pump 2;
(3) flow, controlling the first spinning solution in the first syringe 3 and the second syringe 4 and the second spinning solution is 1ml/h, open high pressure generator 7, voltage is upgraded to 10kV, starts electrospinning arranged side by side, obtain ε-polycaprolactone/plexiglass parallel construction nanofiber.
ε-polycaprolactone/plexiglass parallel construction the nanofiber of Flied emission transmission electron microscope to above-mentioned gained is adopted to carry out high-resolution-ration transmission electric-lens observation, the transmission electron microscope picture of gained as shown in Figure 5, as can be seen from Figure 5, the ε-polycaprolactone/plexiglass parallel construction nanofiber of gained has obvious bilateral structure.Wherein gray scale large while be plexiglass, be of a size of 220 nanometers; Gray scale little while be ε-polycaprolactone, be of a size of 340nm, whole ε-polycaprolactone/plexiglass parallel construction nanofiber diameter is 560 nanometers.
application comparative examples 1
Teflon in electric spinning equipment arranged side by side in embodiment 2 being wrapped up spinneret arranged side by side, to change the parallel metal capillary arranged side by side all adopted in electrospinning arranged side by side in prior art into be spinneret, high pressure generator 7 directly connects to provide high-pressure electrostatic by wire with parallel metal capillary arranged side by side, the port of export of parallel metal capillary arranged side by side and the center of fiber accepts plate 8 just right, distance is 20cm, then this device is utilized to carry out electrospinning to two fluids, to prepare ε-polycaprolactone/plexiglass parallel construction nanofiber, step is as follows:
(1), the preparation of spinning solution
First spinning solution, mass percent concentration is ε-polycaprolactone (hereinafter referred to as the PCL) solution of 8%, and its compound method is as follows:
Molecular weight by 8g is 130, the PCL of 000 joins chloroform and the N of 92g, in the mixed liquor of dinethylformamide composition, stir and obtain the PCL solution that mass percent concentration is 8%, in the mixed liquor that described chloroform and DMF form, calculate by volume, chloroform: DMF is 8:2;
Second spinning solution, mass percent concentration is plexiglass (hereinafter referred to as the PMMA) solution of 7%, and its compound method is as follows:
Molecular weight by 7g is 900, the plexiglass of 000 joins carrene and the N of 93g, in the mixed liquor of N-dimethylacetylamide composition, stir and obtain the plexiglass solution that mass percent concentration is 7%, in the mixed liquor that described carrene and DMA form, calculate by volume, i.e. carrene: DMA is 90:10;
(2), by the first spinning solution of step (1) gained and the second spinning solution join respectively in the first syringe 3 and the second syringe 4, then open the first axial flow syringe pump 1 and the second axial flow syringe pump 2;
(3) flow, controlling the first spinning solution in the first syringe 3 and the second syringe 4 and the second spinning solution is 1ml/h, open high pressure generator 7, voltage is upgraded to 10kV, starts electrospinning arranged side by side, obtain ε-polycaprolactone/plexiglass parallel construction nanofiber.
ε-polycaprolactone/plexiglass parallel construction the nanofiber of field emission scanning electron microscope to above-mentioned gained is adopted to carry out high-resolution-ration transmission electric-lens observation, the scanning electron microscope (SEM) photograph of gained as shown in Figure 6, as can be seen from Figure 6, although the ε-polycaprolactone of gained/plexiglass parallel construction nanofiber has some collateral fibers, but there is a lot of bifurcated, fibre diameter size is uneven simultaneously, and many small diameter fibers cause due to the fully nonlinear water wave on collateral fiber both sides.
Carry out contrast by above-mentioned Fig. 5 and Fig. 6 can find out, adopt Teflon of the present invention to wrap up spinneret arranged side by side and be prepared ε-polycaprolactone/plexiglass parallel construction nanofiber, the ε-polycaprolactone/plexiglass parallel construction nanofibrous structures of gained is complete clear.
The above is only the citing of embodiments of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement, these improvement also should be considered as protection scope of the present invention.

Claims (5)

1. Teflon wraps up a spinneret arranged side by side, it is characterized in that described Teflon wraps up spinneret arranged side by side and comprises two metal capillaries, a jointing, also comprises a Teflon sleeve pipe in addition;
Teflon casing inner diameter is 2mm, and the internal diameter of two metal capillaries is 0.5mm;
In two metal capillaries, a metal capillary is L-type, and another root metal capillary is yi word pattern;
The metal capillary of L-type while parallelly with the metal capillary of yi word pattern to be close to, and the port of export of metal capillary of the parallel L-type be close to flushes with the port of export of the metal capillary of yi word pattern, the outside of two metal capillaries that the port of export flushes and the arrival end of Teflon sleeve pipe are socketed, the port of export of Teflon sleeve pipe reaches outside the port of export of two metal capillaries that the port of export flushes, and its extension elongation is 0.2mm;
One end that the arrival end of the metal capillary of yi word pattern directly inserts jointing is carried out cover and is connected.
2. one kind is wrapped up the electric spinning equipment arranged side by side of spinneret arranged side by side with Teflon as claimed in claim 1, comprise the first axial flow syringe pump, the second axial flow syringe pump, first syringe, the second syringe, silicone tube, high pressure generator, fiber accepts plate and earthing or grounding means, characterized by further comprising Teflon and wrap up spinneret arranged side by side;
The entrance that Teflon wraps up the metal capillary of the L-type of spinneret arranged side by side is connected with the first syringe by silicone tube, second syringe directly inserts Teflon and wraps up in the other end of the jointing of spinneret arranged side by side, first syringe is arranged on the first axial flow syringe pump, and the second syringe is arranged on axial flow syringe pump;
First axial flow syringe pump, the second axial flow syringe pump regulates and controls the propelling speed of the first syringe and the second syringe respectively, and high pressure generator and Teflon wrap up spinneret arranged side by side and be directly connected to provide high-pressure electrostatic by wire;
Teflon wraps up in spinneret arranged side by side, and the port of export of Teflon sleeve pipe is relative with the center of fiber accepts plate, and distance is 20cm, and high pressure generator and fiber accepts plate are jointly by earthing or grounding means ground connection;
Described high pressure generator provides voltage to be 0 ~ 60kV;
The first described syringe and the second syringe are commercially available medical grade articles;
Described silicone tube internal diameter is 2mm, wall thickness 1mm.
3. a kind of electric spinning equipment arranged side by side wrapping up spinneret arranged side by side with Teflon as claimed in claim 2, is characterized in that fiber accepts plate is adopt one piece of hardboard of aluminium foil parcel to make;
First axial flow syringe pump, the second axial flow syringe pump are import U.S. product, KDS100 type, U.S. Cole-Parmer ?company produces;
High pressure generator is Shanghai Su Te Products, ZGF2000 type.
4. utilize and as claimed in claim 2 or claim 3 with the electric spinning equipment arranged side by side of decentralized casing spinneret arranged side by side, the method that electrospinning prepares parallel construction nanofiber carried out to two fluids, it is characterized in that concrete steps are as follows:
In the first syringe, add the first spinning liquid, in the second syringe, add the second spinning liquid, by electric field action, the preparation of parallel construction nanofiber can be carried out;
For different spinning liquid in preparation process, adopt corresponding flow and voltage, the parallel construction nanofiber of different structural integrities can be prepared.
5. utilize and as claimed in claim 2 or claim 3 with the electric spinning equipment arranged side by side of decentralized casing spinneret arranged side by side, the method that electrospinning prepares ε-polycaprolactone/plexiglass parallel construction nanofiber carried out to two fluids, it is characterized in that concrete steps are as follows:
(1), the preparation of spinning solution
First spinning solution, mass percent concentration is the ε-polycaprolactone solution of 8%, and its compound method is as follows:
Molecular weight by 8g is 130, ε-the polycaprolactone of 000 joins chloroform and the N of 92g, in the mixed liquor of dinethylformamide composition, stir and obtain ε-polycaprolactone solution that mass percent concentration is 8%, in the mixed liquor that described chloroform and DMF form, calculate by volume, chloroform: DMF is 8:2;
Second spinning solution, mass percent concentration is the plexiglass solution of 7%, and its compound method is as follows:
Molecular weight by 7g is 900, the plexiglass of 000 joins carrene and the N of 93g, in the mixed liquor of N-dimethylacetylamide composition, stir and obtain the plexiglass solution that mass percent concentration is 7%, in the mixed liquor that described carrene and DMA form, calculate by volume, i.e. carrene: DMA is 90:10;
(2), by the first spinning solution of step (1) gained and the second spinning solution join respectively in the first syringe and the second syringe, then open the first axial flow syringe pump and the second axial flow syringe pump;
(3) flow, controlling the first spinning solution in the first syringe and the second syringe and the second spinning solution is 1ml/h, open high pressure generator, voltage is upgraded to 10kV, starts electrospinning arranged side by side, obtain ε-polycaprolactone/plexiglass parallel construction nanofiber.
CN201510024790.1A 2015-01-19 2015-01-19 Collateral spinning head wrapped with Teflon and application thereof Expired - Fee Related CN104562233B (en)

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CN106283221A (en) * 2016-11-15 2017-01-04 上海理工大学 An a kind of sheath twin-core microfluidic control shower nozzle, device for spinning and spinning process
CN106283221B (en) * 2016-11-15 2018-12-14 上海理工大学 One sheath twin-core microfluidic control spray head of one kind, device for spinning and spinning process
WO2019146726A1 (en) * 2018-01-24 2019-08-01 旭化成株式会社 Composite long-fiber non-woven fabric using eccentric sheath/core composite fibers at one or both surfaces
JPWO2019146726A1 (en) * 2018-01-24 2020-11-19 旭化成株式会社 Composite long fiber non-woven fabric using eccentric sheath core type composite fiber on at least one side

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