CN208472238U - A kind of electric field-assisted original position fixed point electrostatic spinning apparatus - Google Patents
A kind of electric field-assisted original position fixed point electrostatic spinning apparatus Download PDFInfo
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- CN208472238U CN208472238U CN201820802813.6U CN201820802813U CN208472238U CN 208472238 U CN208472238 U CN 208472238U CN 201820802813 U CN201820802813 U CN 201820802813U CN 208472238 U CN208472238 U CN 208472238U
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Abstract
The utility model relates to a kind of electric field-assisteds to pinpoint electrostatic spinning apparatus in situ, including syringe, collector, high voltage power supply, one end of the syringe is equipped with spinning syringe needle, the anode of spinning syringe needle one end and high voltage power supply connects, the spinning syringe needle other end is with mouth spray and towards collector, the spinning syringe needle is equipped with electric field constraint mechanism, the electric field constraint mechanism is the distribution of spinning syringe needle constrained electric field, electric field constraint mechanism, which encloses to set, is mounted on spinning syringe needle towards the periphery for collecting extreme direction, the cathode connection of the collector and high voltage power supply.The utility model utilizes electric field constraint mechanism, it will be in the distribution constraint to a certain range of electrostatic field, thus in the confined situation of electrostatic field, also become controllable by the deposition position and range of the spinning fibre of electric field force effect, fixed point deposition may be implemented, suitable for most of electrospinning devices and device using syringe needle spinning, improve its spinning effect, it is not necessary that device is transformed on a large scale, effect is obvious.
Description
Technical field
The utility model belongs to Electrospun nano-fibers preparation technical field, and it is quiet to be related to a kind of electric field-assisted original position fixed point
Electric spinning device.
Background technique
Electrostatic spinning technique (electrospinning) be it is a kind of by electrostatic field prepare micro nanometer fiber in the way of,
In many nanofiber preparation processes, electrostatic spinning technique is considered as that one kind is simple and effective, fairly large can be prepared equal
The method of even, continuous 1-dimention nano fiber is to prepare most popular one of the technology of nanofiber at present, with the letter of its process equipment
Single, many advantages, such as raw material sources are extensive, spinning technique is controllable, is prepared micro-nano by research and report extensively both at home and abroad
The diameter of fiber can be from several nanometers to several microns.
Electrostatic spinning technique is widely used, and the system such as antibacterial material, nano particle, medical medicine can be added in spinning solution
Standby functional composite fibres various out play huge effect in fields such as biomedicine, catalysis, filtering, the energy.But
In spinning process, electrospun fibers, which exist, to have a very wide distribution, and depositional area is big, pinpoints the disadvantage of deposition difference.
Currently, Chinese patent (CN205223420U) and Chinese patent (CN204939670U) assist electrospinning by air-flow
The mode defect excessive come the range of deposition that improves electrospun fibers, assisted by air-flow inevitably in original electricity
The feeders such as additional air pump, gas flow controller on the basis of spinning equipment, cause electric spinning equipment excessively complicated, using trouble.
And it is had not been reported both at home and abroad by way of electric field-assisted electrospun fibers fixed point deposition.
Utility model content
The purpose of the utility model is to overcome during the spinning process, there are distributions for electrospun fibers in the prior art
Extensively, depositional area is big, pinpoints the disadvantage of deposition difference, provides a kind of electric field-assisted original position fixed point electrostatic spinning apparatus.
To achieve the goals above, the technical solution of the utility model is:
A kind of electric field-assisted fixed point electrostatic spinning apparatus, including syringe, collector, high voltage power supply in situ, the injection
One end of device is equipped with spinning syringe needle, the anode connection of spinning syringe needle one end and high voltage power supply, and the spinning syringe needle other end has
Mouth spray and towards collector, the spinning syringe needle is equipped with electric field constraint mechanism, and the electric field constraint mechanism is spinning syringe needle
Constrained electric field distribution, electric field constraint mechanism enclose set is mounted on spinning syringe needle towards collect extreme direction periphery, the collector with
The cathode of high voltage power supply connects.
Preferably, the spinning syringe needle is set on the central axis of electric field constraint mechanism.
Preferably, the electric field constraint mechanism is the auxiliary electrode of tubular structure, and one end of auxiliary electrode is located at spinning needle
On head and be connected to conduction, auxiliary electrode towards the end of collector be flaring structure.
Preferably, the auxiliary electrode is made of metal.
Preferably, the auxiliary electrode is conically shaped body structure, and the cone angle of the conically shaped body structure auxiliary electrode is
130 °~140 °, towards the open-ended for circle of collector.
Preferably, the cone angle of the auxiliary electrode is 130 °, and the diameter of rounded ends opening is 7cm.
Preferably, the auxiliary electrode is half sphere shape structure, and half sphere shape structure auxiliary electrode is towards the end of collector
Portion's radius is 2cm.
Preferably, the auxiliary electrode is semielliptical physique structure, and the long axis of semielliptical physique structure auxiliary electrode is
3cm, short axle 2cm.
Preferably, central axis of the spinning syringe needle through the auxiliary electrode.
Preferably, fixed point electrostatic spinning apparatus further includes promoting pump to the electric field-assisted in situ, and the syringe, which is located at, to be pushed away
Into on pump, the propulsion pump can push the piston core pin in injector syringe to move in injector syringe.
Fixed point electrostatic spinning apparatus, the high voltage power supply are additionally provided with high voltage power supply to a kind of electric field-assisted as described above in situ
Voltage display screen and high voltage power supply adjusting knob, the output voltage of the high voltage power supply are 0~30kV.
During electrostatic spinning, auxiliary electrode can constrain the distribution of high-voltage electrostatic field, prevent the diverging of electrostatic field, improve
The distribution density of electric field line.The Polymer Solution that spinning syringe needle projects stretches under the action of the high-voltage electrostatic field to suffer restraints,
Whip is dynamic, attenuates, becomes the fiber of micro-nano range, and deposition position, range of deposition are controllable, and it is in situ accurate heavy to be advantageously implemented
Product.
The utility model has the following beneficial effects:
(1) fixed point electrostatic spinning apparatus utilizes electric field constraint mechanism to the electric field-assisted of the utility model in situ, by electrostatic field
Distribution constraint to certain range in, thus in the confined situation of electrostatic field, the spinning fibre that is acted on by electric field force
Deposition position and range also become controllably, fixed point deposition to may be implemented.
(2) range of deposition of the constraint due to electric field constraint mechanism to electrostatic field, electrospun fibers becomes smaller, identical
Under spinning speed, certain thickness tunica fibrosa can be obtained faster in lesser range of deposition, thus spinning can be reduced
Time can obtain thicker tunica fibrosa in a short time, such as can prepare in 5 minutes with a thickness of 0.1mm's
Polyurethane micro nanometer fiber film.
(3) structure of the electric field constraint mechanism of the utility model is simple, and versatility is high, is not changing electrospinning device
Under the premise of main structure, electric field constraint mechanism is added at spinning syringe needle, so that it may improve fiber during electrostatic spinning
Range of deposition is excessive, the bad disadvantage of directionality, and the utilization rate of Polymer Solution can be improved, and avoids wastage of material.It can
Suitable for most of electrospinning devices and device using syringe needle spinning, improve its spinning effect, it is big without being carried out to device
The transformation of scale, effect are obvious.
(4) the electric field constraint mechanism structure of the utility model is simple, and main structure is the tubular knot made of conductive material
The auxiliary electrode of structure is adapted to the electrostatic spinning of a variety of solution or melt system, can be according to electrostatic during specifically used
The structure of spinning equipment carries out adjusting appropriate to obtain more preferably electrostatic field constrained effect, promotes and is easy.
Detailed description of the invention
Fig. 1 is that the electric field-assisted of the utility model pinpoints the structural schematic diagram of electrostatic spinning apparatus in situ.
Fig. 2 is the auxiliary electrode of embodiment 1 and the structural schematic diagram of spinning syringe needle.
Fig. 3 is the auxiliary electrode of embodiment 2 and the structural schematic diagram of spinning syringe needle.
Fig. 4 is the auxiliary electrode of embodiment 3 and the structural schematic diagram of spinning syringe needle.
Fig. 5 is the temperature rise effect figure of the polyurethane fiber of doped magnetic nano particle made from embodiment 4-6.
Fig. 6 is the tunica fibrosa schematic diagram of the polyurethane fiber of doped magnetic nano particle made from embodiment 4,7,8.
Wherein, 1-pump, 2-syringes, 3-spinning syringe needles, 4-auxiliary electrodes, 5-collectors, 6-high-voltage electricity are promoted
Source, 7-high-voltage power voltage display screens, 8-high voltage power supply tune voltage knobs.
Specific embodiment
According to following embodiments, the utility model may be better understood.However, those skilled in the art is easy reason
Solution, specific material proportion, process conditions and its result described in embodiment are merely to illustrate the utility model without should
The utility model described in detail in claims will not be limited.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of electric field-assisted fixed point electrostatic spinning apparatus, including syringe 2, collector 5, height in situ
Voltage source 6, one end of the syringe 2 are equipped with spinning syringe needle 3, and described 3 one end of spinning syringe needle and the positive of high voltage power supply 6 connect
It connects, for 3 other end of spinning syringe needle with mouth spray and towards collector 5, the spinning syringe needle 3 is equipped with electric field constraint mechanism, institute
Electric field constraint mechanism is stated as the distribution of 3 constrained electric field of spinning syringe needle, electric field constraint mechanism, which encloses to set, is mounted on spinning syringe needle 3 towards collection
The periphery of extreme direction, the spinning syringe needle are set on the central axis of electric field constraint mechanism, and the electric field constraint mechanism is tubular
The auxiliary electrode 4 of structure, one end of auxiliary electrode 4 are located on spinning syringe needle 3 and are connected to conduction, and auxiliary electrode 4 is towards collector
End be flaring structure, the auxiliary electrode is made of metal, and the collector 5 is connect with the cathode of high voltage power supply 6.
As shown in Fig. 2, the auxiliary electrode is conically shaped body structure.The cone angle of the conically shaped body structure auxiliary electrode is
130 °~140 °, towards the open-ended for circle of collector.In the present embodiment, the cone angle of the auxiliary electrode is
130 °, the diameter of circular open end is 7cm.
Fixed point electrostatic spinning apparatus further includes promoting pump 1 to the electric field-assisted in situ, and the syringe 2 is located at propulsion pump 1
On, the propulsion pump 1 can push the piston core pin in 2 syringe of syringe to move in 2 syringe of syringe.The syringe can be with
It is disposable syringe, is also possible to the syringe being recycled.
The spinning syringe needle is tack spinning syringe needle, and spinning needle tip diameter is 1mm.
The high voltage power supply is additionally provided with high-voltage power voltage display screen 7 and high voltage power supply adjusting knob 8, the high voltage power supply
Output voltage be 0~30kV.
In the present embodiment, the auxiliary electrode is made of metallic aluminium, the collection extremely aluminium foil collector.
Embodiment 2
As shown in Figure 1, Figure 3, a kind of electric field-assisted fixed point electrostatic spinning apparatus, including syringe 2, collector 5, height in situ
Voltage source 6, one end of the syringe 2 are equipped with spinning syringe needle 3, and described 3 one end of spinning syringe needle and the positive of high voltage power supply 6 connect
It connects, for 3 other end of spinning syringe needle with mouth spray and towards collector 5, the spinning syringe needle 3 is equipped with electric field constraint mechanism, institute
Electric field constraint mechanism is stated as the distribution of 3 constrained electric field of spinning syringe needle, electric field constraint mechanism, which encloses to set, is mounted on spinning syringe needle 3 towards collection
The periphery of extreme direction, the spinning syringe needle are set on the central axis of electric field constraint mechanism, and the electric field constraint mechanism is tubular
The auxiliary electrode 4 of structure, one end of auxiliary electrode 4 are located on spinning syringe needle 3 and are connected to conduction, and auxiliary electrode 4 is towards collector
End be flaring structure, the auxiliary electrode is made of metal, and the collector 5 is connect with the cathode of high voltage power supply 6.
As shown in figure 3, the auxiliary electrode is hemisphere body structure.The half sphere shape structure auxiliary electrode direction is collected
Open-ended, the end radius 2cm of pole.
Fixed point electrostatic spinning apparatus further includes promoting pump 1 to the electric field-assisted in situ, and the syringe 2 is located at propulsion pump 1
On, the propulsion pump 1 can push the piston core pin in 2 syringe of syringe to move in 2 syringe of syringe.The syringe can be with
It is disposable syringe, is also possible to the syringe being recycled.
The spinning syringe needle is tack spinning syringe needle, and spinning needle tip diameter is 1mm.
The high voltage power supply is additionally provided with high-voltage power voltage display screen 7 and high voltage power supply adjusting knob 8, the high voltage power supply
Output voltage be 0~30kV.
In the present embodiment, the auxiliary electrode is made of metallic aluminium, the collection extremely aluminium foil collector.
Embodiment 3
As Figure 1 and Figure 4, a kind of electric field-assisted fixed point electrostatic spinning apparatus, including syringe 2, collector 5, height in situ
Voltage source 6, one end of the syringe 2 are equipped with spinning syringe needle 3, and described 3 one end of spinning syringe needle and the positive of high voltage power supply 6 connect
It connects, for 3 other end of spinning syringe needle with mouth spray and towards collector 5, the spinning syringe needle 3 is equipped with electric field constraint mechanism, institute
Electric field constraint mechanism is stated as the distribution of 3 constrained electric field of spinning syringe needle, electric field constraint mechanism, which encloses to set, is mounted on spinning syringe needle 3 towards collection
The periphery of extreme direction, the spinning syringe needle are set on the central axis of electric field constraint mechanism, and the electric field constraint mechanism is tubular
The auxiliary electrode 4 of structure, one end of auxiliary electrode 4 are located on spinning syringe needle 3 and are connected to conduction, and auxiliary electrode 4 is towards collector
End be flaring structure, the auxiliary electrode is made of metal, and the collector 5 is connect with the cathode of high voltage power supply 6.
As shown in figure 4, the auxiliary electrode is semielliptical physique structure, the long axis of semielliptical physique structure auxiliary electrode is
3cm, short axle 2cm, semielliptical physique structure auxiliary electrode is towards the open-ended of collector.
Fixed point electrostatic spinning apparatus further includes promoting pump 1 to the electric field-assisted in situ, and the syringe 2 is located at propulsion pump 1
On, the propulsion pump 1 can push the piston core pin in 2 syringe of syringe to move in 2 syringe of syringe.The syringe can be with
It is disposable syringe, is also possible to the syringe being recycled.
The spinning syringe needle is tack spinning syringe needle, and spinning needle tip diameter is 1mm.
The high voltage power supply is additionally provided with high-voltage power voltage display screen 7 and high voltage power supply adjusting knob 8, the high voltage power supply
Output voltage be 0~30kV.
In the present embodiment, the auxiliary electrode is made of metallic aluminium, the collection extremely aluminium foil collector.
It should be noted that the spinning syringe needle of the utility model and auxiliary electrode can be sealed connection, it is also possible to non-
It is tightly connected.The spinning syringe needle of the utility model can not also be connected to conduction with auxiliary electrode, and auxiliary electrode is by high voltage power supply list
Voltage is solely provided.
Embodiment 4
A kind of preparation method for the polyurethane fiber pinpointing electrostatic spinning apparatus in situ based on the electric field-assisted, including
Following steps:
(1) 1.8g polyurethane is weighed, is added in conical flask, pours into 7.5g DMF, 7.5g tetrahydrofuran, in 30~40 DEG C of water
Magnetic stirrer 3h is used under conditions of bath heating, after polyurethane dissolution, adds the γ-that 0.54g partial size is 20nm
Fe2O3Magnetic nanoparticle (Aladdin) is stirred 20 minutes using mechanical agitator, solution is then placed in ultrasonator
Middle ultrasonic vibration 2h, is uniformly mixed magnetic nanoparticle in the solution, and spinning precursor solution is made；
(2) the prepared spinning precursor solution of step (1) is poured into electric field-assisted and pinpoints electrostatic spinning apparatus in situ
In disposable syringe, tack spinning needle tip diameter is 1mm, and the auxiliary electrode of conically shaped body structure is set to spinning syringe needle
The one end being connect with high voltage power supply, and conduction is connected to spinning syringe needle, spinning syringe needle is set on the central axis of auxiliary electrode, is spun
End of the silk syringe needle with mouth spray is parallel with the same side end of auxiliary electrode；
(3) distance for adjusting spinning syringe needle to aluminium foil collector is 10cm, spinning voltage 15kV, promotes the propulsion rate of pump
For 2mL/h, electrostatic spinning is carried out, is collected by aluminium foil collector, continued spinning 5 minutes, that is, doped magnetic is prepared
The polyurethane fiber of nano particle.
Embodiment 5
A kind of preparation method for the polyurethane fiber pinpointing electrostatic spinning apparatus in situ based on the electric field-assisted, including
Following steps:
(1) 1.8g polyurethane is weighed, is added in conical flask, pours into 7.5g DMF, 7.5g tetrahydrofuran, in 30~40 DEG C of water
Magnetic stirrer 3h is used under conditions of bath heating, after polyurethane dissolution, adds the γ-that 0.54g partial size is 20nm
Fe2O3Magnetic nanoparticle (Aladdin) is stirred 20 minutes using mechanical agitator, solution is then placed in ultrasonator
Middle ultrasonic vibration 2h, is uniformly mixed magnetic nanoparticle in the solution, and spinning precursor solution is made；
(2) the prepared spinning precursor solution of step (1) is poured into electric field-assisted and pinpoints electrostatic spinning apparatus in situ
In disposable syringe, tack spinning needle tip diameter is 1mm, and the auxiliary electrode of conically shaped body structure is set to spinning syringe needle
The one end being connect with high voltage power supply, and conduction is connected to spinning syringe needle, spinning syringe needle is set on the central axis of auxiliary electrode, is spun
End of the silk syringe needle with mouth spray is parallel with the same side end of auxiliary electrode；
(3) distance for adjusting spinning syringe needle to aluminium foil collector is 10cm, spinning voltage 15kV, promotes the propulsion rate of pump
For 2mL/h, electrostatic spinning is carried out, is collected by aluminium foil collector, continued spinning 10 minutes, that is, doping magnetic is prepared
The polyurethane fiber of property nano particle.
Embodiment 6
A kind of preparation method for the polyurethane fiber pinpointing electrostatic spinning apparatus in situ based on the electric field-assisted, including
Following steps:
(1) 1.8g polyurethane is weighed, is added in conical flask, pours into 7.5g DMF, 7.5g tetrahydrofuran, in 30~40 DEG C of water
Magnetic stirrer 3h is used under conditions of bath heating, after polyurethane dissolution, adds the γ-that 0.54g partial size is 20nm
Fe2O3Magnetic nanoparticle (Aladdin) is stirred 20 minutes using mechanical agitator, solution is then placed in ultrasonator
Middle ultrasonic vibration 2h, is uniformly mixed magnetic nanoparticle in the solution, and spinning precursor solution is made；
(2) the prepared spinning precursor solution of step (1) is poured into electric field-assisted and pinpoints electrostatic spinning apparatus in situ
In disposable syringe, tack spinning needle tip diameter is 1mm, and the auxiliary electrode of conically shaped body structure is set to spinning syringe needle
The one end being connect with high voltage power supply, and conduction is connected to spinning syringe needle, spinning syringe needle is set on the central axis of auxiliary electrode, is spun
End of the silk syringe needle with mouth spray is parallel with the same side end of auxiliary electrode；
(3) distance for adjusting spinning syringe needle to aluminium foil collector is 10cm, spinning voltage 15kV, promotes the propulsion rate of pump
For 2mL/h, electrostatic spinning is carried out, is collected by aluminium foil collector, continued spinning 15 minutes, that is, doping magnetic is prepared
The polyurethane fiber of property nano particle.
Fig. 5 is three kinds of different-thickness that embodiment 4-6 is obtained after 5 minutes, 10 minutes, 15 minutes spinning time respectively
Doped magnetic nano particle polyurethane fiber temperature rise effect figure, the magnetic fibre obtained after 10 minutes spinning processes
Film can be warming up to 46 DEG C in 153kHz high-frequency alternating magnetic field.
Embodiment 7
A kind of preparation method for the polyurethane fiber pinpointing electrostatic spinning apparatus in situ based on the electric field-assisted, including
Following steps:
(1) 1.8g polyurethane is weighed, is added in conical flask, pours into 7.5g DMF, 7.5g tetrahydrofuran, in 30~40 DEG C of water
Magnetic stirrer 3h is used under conditions of bath heating, after polyurethane dissolution, adds the γ-that 0.54g partial size is 20nm
Fe2O3Magnetic nanoparticle (Aladdin) is stirred 20 minutes using mechanical agitator, solution is then placed in ultrasonator
Middle ultrasonic vibration 2h, is uniformly mixed magnetic nanoparticle in the solution, and spinning precursor solution is made；
(2) the prepared spinning precursor solution of step (1) is poured into electric field-assisted and pinpoints electrostatic spinning apparatus in situ
In disposable syringe, tack spinning needle tip diameter is 1mm, and the auxiliary electrode of conically shaped body structure is set to spinning syringe needle
The one end being connect with high voltage power supply, and conduction is connected to spinning syringe needle, spinning syringe needle is set on the central axis of auxiliary electrode, is spun
End of the silk syringe needle with mouth spray is parallel with the same side end of auxiliary electrode；
(3) distance for adjusting spinning syringe needle to aluminium foil collector is 15cm, spinning voltage 15kV, promotes the propulsion rate of pump
For 2mL/h, electrostatic spinning is carried out, is collected by aluminium foil collector, continued spinning 5 minutes, that is, doped magnetic is prepared
The polyurethane fiber of nano particle.
Embodiment 8
A kind of preparation method for the polyurethane fiber pinpointing electrostatic spinning apparatus in situ based on the electric field-assisted, including
Following steps:
(1) 1.8g polyurethane is weighed, is added in conical flask, pours into 7.5g DMF, 7.5g tetrahydrofuran, in 30~40 DEG C of water
Magnetic stirrer 3h is used under conditions of bath heating, after polyurethane dissolution, adds the γ-that 0.54g partial size is 20nm
Fe2O3Magnetic nanoparticle (Aladdin) is stirred 20 minutes using mechanical agitator, solution is then placed in ultrasonator
Middle ultrasonic vibration 2h, is uniformly mixed magnetic nanoparticle in the solution, and spinning precursor solution is made；
(2) the prepared spinning precursor solution of step (1) is poured into electric field-assisted and pinpoints electrostatic spinning apparatus in situ
In disposable syringe, tack spinning needle tip diameter is 1mm, and the auxiliary electrode of conically shaped body structure is set to spinning syringe needle
The one end being connect with high voltage power supply, and conduction is connected to spinning syringe needle, spinning syringe needle is set on the central axis of auxiliary electrode, is spun
End of the silk syringe needle with mouth spray is parallel with the same side end of auxiliary electrode；
(3) distance for adjusting spinning syringe needle to aluminium foil collector is 20cm, spinning voltage 15kV, promotes the propulsion rate of pump
For 2mL/h, electrostatic spinning is carried out, is collected by aluminium foil collector, continued spinning 5 minutes, that is, doped magnetic is prepared
The polyurethane fiber of nano particle.
Fig. 6 a, b, c are respectively the poly- of the doped magnetic nano particle that embodiment 4,7,8 is obtained in different spinning distances respectively
The fibre morphology schematic diagram of urethane fiber, as can be seen that being obtained when needle point and aluminium foil collector are at a distance of 10cm from two figures
Polyurethane fiber film is in intermediate cone high, surrounding is low.When needle point and aluminium foil collector are at a distance of 15cm, obtained polyurethane
Tunica fibrosa is the circle of uniform thickness.When needle point and aluminium foil collector are at a distance of 20cm or more, obtained polyurethane fiber film
It is consistent with the case where auxiliary electrode is not added, form the tunica fibrosa being distributed on a large scale.
The polyurethane fiber of the doped magnetic nano particle can be used for the micro nanometer fiber film of magnetic thermotherapy.Extremely with spinning head
The change of the distance of aluminium foil collector, the deposition pattern of tunica fibrosa show different situations.The spinning time is different, obtains difference
The magnetic fibre film of thickness.
Embodiment 9
A kind of preparation method for the polycaprolactone fiber pinpointing electrostatic spinning apparatus in situ based on the electric field-assisted, packet
Include following steps:
(1) 1.5g polycaprolactone is weighed, is added in conical flask, 8.5g acetone is poured into, under conditions of 30 DEG C of heating water baths
75mg silver nano-grain is added, magnetic stirrer 20 is used after polycaprolactone dissolution with magnetic stirrer 3h
Minute, solution is then placed in ultrasonator ultrasonic vibration 2 hours, is uniformly mixed silver nano-grain in the solution, is made
At spinning precursor solution；
(2) the prepared spinning precursor solution of step (1) is poured into electric field-assisted and pinpoints electrostatic spinning apparatus in situ
In disposable syringe, tack spinning needle tip diameter is 1mm, and the auxiliary electrode of conically shaped body structure is set to spinning syringe needle
The one end being connect with high voltage power supply, and conduction is connected to spinning syringe needle, spinning syringe needle is set on the central axis of auxiliary electrode, is spun
End of the silk syringe needle with mouth spray is parallel with the same side end of auxiliary electrode；
(3) distance for adjusting spinneret syringe needle to aluminium foil collector is 10~20cm, and spinning voltage 15kV promotes the propulsion of pump
Rate is 2mL/h, carries out electrostatic spinning, is collected by aluminium foil collector, polycaprolactone fiber is prepared.
The preparation-obtained polycaprolactone fiber of the present embodiment has antibacterial action, and the wound that can be used as micro/nano level applies
Material, using the electric field-assisted of the utility model to pinpoint electrostatic spinning apparatus in situ can be with accurate in situ in wound site in the short time
Rapidly it is prepared.
Embodiment 4-9 is all made of electric field-assisted described in embodiment 1, and fixed point electrostatic spinning apparatus carries out fixed point in situ in situ
Electrostatic spinning.
Embodiment of above is only to illustrate the technical ideas and features of the present invention, and its object is to allow be familiar with this skill
The people of art understands the content of the present invention and is implemented, and does not limit the protection scope of the present invention, all bases
The equivalent change or modification that the spirit of the present invention is substantially done, should all contain in the lid protection scope of the utility model.
Claims (9)
1. a kind of electric field-assisted fixed point electrostatic spinning apparatus in situ, which is characterized in that including syringe, collector, high voltage power supply,
One end of the syringe is equipped with spinning syringe needle, and spinning syringe needle one end and the positive of high voltage power supply connect, and spinning syringe needle is another
One end is with mouth spray and towards collector, and the spinning syringe needle is equipped with electric field constraint mechanism, and the electric field constraint mechanism is
The distribution of spinning syringe needle constrained electric field, electric field constraint mechanism, which encloses to set, is mounted on the periphery that spinning syringe needle direction collects extreme direction, described
Collector and the cathode of high voltage power supply connect.
2. a kind of electric field-assisted as described in claim 1 pinpoints electrostatic spinning apparatus in situ, which is characterized in that the spinning needle
Head is set on the central axis of electric field constraint mechanism.
3. a kind of electric field-assisted as described in claim 1 pinpoints electrostatic spinning apparatus in situ, which is characterized in that the electric field is about
Beam mechanism is the auxiliary electrode of tubular structure, and one end of auxiliary electrode is located on spinning syringe needle and is connected to conduction, auxiliary electrode court
It is flaring structure to the end of collector.
4. a kind of electric field-assisted as claimed in claim 3 pinpoints electrostatic spinning apparatus in situ, which is characterized in that the auxiliary electricity
Pole is made of metal.
5. a kind of electric field-assisted as claimed in claim 3 pinpoints electrostatic spinning apparatus in situ, which is characterized in that the auxiliary electricity
Extremely conically shaped body structure, the cone angle of the conically shaped body structure auxiliary electrode is 130 °~140 °, towards the end of collector
Portion's opening is circle.
6. a kind of electric field-assisted as claimed in claim 5 pinpoints electrostatic spinning apparatus in situ, which is characterized in that the auxiliary electricity
The diameter of the rounded ends opening of pole is 7cm.
7. a kind of electric field-assisted as claimed in claim 3 pinpoints electrostatic spinning apparatus in situ, which is characterized in that the auxiliary electricity
Extremely half sphere shape structure, the end radius of half sphere shape structure auxiliary electrode towards collector are 2cm.
8. a kind of electric field-assisted as claimed in claim 3 pinpoints electrostatic spinning apparatus in situ, which is characterized in that the auxiliary electricity
Extremely semielliptical physique structure, the long axis of semielliptical physique structure auxiliary electrode are 3cm, short axle 2cm.
9. a kind of electric field-assisted as described in claim 1 pinpoints electrostatic spinning apparatus in situ, which is characterized in that further include promoting
Pump, the syringe are located on propulsion pump, and the propulsion pump can push the piston core pin in injector syringe in injector syringe
Interior movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820802813.6U CN208472238U (en) | 2018-05-28 | 2018-05-28 | A kind of electric field-assisted original position fixed point electrostatic spinning apparatus |
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| CN201820802813.6U CN208472238U (en) | 2018-05-28 | 2018-05-28 | A kind of electric field-assisted original position fixed point electrostatic spinning apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763178A (en) * | 2019-03-15 | 2019-05-17 | 东华大学 | A kind of combination auxiliary electrode for inner conical surface electrostatic spinning nozzle |
| CN110886023A (en) * | 2019-10-31 | 2020-03-17 | 东华大学 | Disc type porous spinning assembly for electrostatic spinning |
-
2018
- 2018-05-28 CN CN201820802813.6U patent/CN208472238U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763178A (en) * | 2019-03-15 | 2019-05-17 | 东华大学 | A kind of combination auxiliary electrode for inner conical surface electrostatic spinning nozzle |
| CN110886023A (en) * | 2019-10-31 | 2020-03-17 | 东华大学 | Disc type porous spinning assembly for electrostatic spinning |
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