WO2017188626A1

WO2017188626A1 - Nanofiber manufacturing device and manufacturing method

Info

Publication number: WO2017188626A1
Application number: PCT/KR2017/003896
Authority: WO
Inventors: 김철생; 박찬희; 김정인; 이준희; 황태인
Original assignee: 전북대학교산학협력단
Priority date: 2016-04-26
Filing date: 2017-04-11
Publication date: 2017-11-02
Also published as: KR101790992B1

Abstract

The present invention relates to a nanofiber manufacturing device and manufacturing method and, particularly, to a nanofiber manufacturing device and manufacturing method, which are capable of manufacturing a nanofiber aligned through electrospinning and manufacturing a nanofiber having a three-dimensional structure. The nanofiber manufacturing device of the present invention comprises: a nozzle part for electrospinning a nanofiber; and a collector arranged so as to be spaced from the nozzle part so as to collect the nanofiber electrospun in the nozzle part, wherein the collector comprises: a base member arranged so as to be spaced from the nozzle part; and a pin member made of a conductive material and coupled to the base member, wherein the pin member protrudes toward the nozzle part farther than the base member such that the nanofiber electrospun in the nozzle part toward the base member is coupled, before the base member, to an end of the pin member.

Description

Nanofiber manufacturing apparatus and manufacturing method

The present invention relates to a nanofiber manufacturing apparatus and a manufacturing method, and more particularly, to a nanofiber manufacturing apparatus and a method for manufacturing a nanofiber having a three-dimensional structure as well as nanofibers arranged through electrospinning.

Fiber nanomaterial (NT), a nano-structured fiber new material technology, is a new technology that overcomes the limitations of existing fiber technology, and can create new technologies and new materials for future convergence in high-tech industries such as IT, NT, ET, and BT industries. It is a promising convergence new material technology.

As nanofibers have unique characteristics such as ultra-high surface area effect, nano-size effect, and ultra-molecular array effect, they are emerging as next generation high-performance high-tech new materials. In many fields, their applications are widening day by day.

Therefore, development of manufacturing process of nanofibers with nano-diameter diameter, development of new nanofiber materials expressing new functions through precise nano-structure design controlled by nano-size on the inside, outside and surface of the fiber The development of high-performance nanofiber-based fusion nanofiber materials through the control of such nano-level particles or structures is required.

Methods of manufacturing nanofibers include drawing, template synthesis, phase separation, self assembly, electrospinning, and the like. Electrospinning is generally applied as a method that can be produced.

Electrospinning method is to apply a high voltage between the nozzle (+ voltage) and the integrated electrode plate (-voltage) for spinning the polymer solution so that when the electric field larger than the surface tension of the polymer solution is formed in the form of nanofibers through the nozzle will be.

Nanofibers produced by electrospinning method have properties of polymer solution, molecular structure, viscosity, elasticity, conductivity, dielectric property, material properties such as polarity and surface tension, electric field strength, distance between nozzle and integrated electrode, supply of polymer solution. It is greatly affected by radiation conditions such as speed and temperature.

In addition, the nanofibers manufactured by the conventional electrospinning apparatus are randomly distributed or network structure because the nanofibers radiated from the nozzle are irregularly sprayed.

If the nanofibers of the ordered structure can be obtained than the conventional nanofibers having an irregular structure, its utilization becomes much wider.

Therefore, recently, apparatuses for manufacturing aligned nanofibers have been developed, but the method is not easy to date.

In addition, the manufactured nanofibers have only a planar two-dimensional structure, which makes it difficult to use the three-dimensional structure.

The present invention is to solve the above-described problems, it is possible to easily produce aligned nanofibers using a relatively simple structure, the production of nanofibers that can also produce nanofibers having a three-dimensional structure as well as two-dimensional It is an object of the present invention to provide an apparatus and a manufacturing method.

In order to achieve the above object, the nanofiber manufacturing apparatus of the present invention comprises: a nozzle unit for electrospinning nanofibers, a collector disposed to be spaced apart from the nozzle unit to collect nanofibers electrospun from the nozzle unit; An apparatus for manufacturing a nanofiber, the collector comprising: a base member spaced apart from the nozzle unit; A pin member made of a conductive material coupled to the base member, wherein the pin member protrudes further in the direction of the nozzle portion than the base member, and the nanofibers are electrospun from the nozzle portion toward the base member. It is characterized in that coupled to the end of the pin member earlier than the base member.

The pin member is coupled to the base member to be movable in the front-rear direction in which the nozzle unit is disposed.

The adhesion of the base member to the nanofibers is higher than the adhesion of the end of the pin member.

It further comprises a pin driving unit for moving the pin member in the front and rear direction.

The pin drive unit, the support; It is coupled to the support and disposed behind the collector, the pressing member for moving the end in the direction of the pin member; comprising, wherein the pin member by the front and rear movement of the pressing member in the front and rear direction with respect to the base member Is moved to.

The support includes a vertical support; And a horizontal support movably coupled to the vertical support in a vertical direction, wherein the pressing member is movably coupled to the horizontal support in a horizontal direction.

The base member is formed with a through hole through which the pin member penetrates, and a locking jaw is formed on the outer circumferential surface of the pin member so that the moving distance is limited to the base member when the pin member moves forward.

The base member, the front member facing the nozzle portion, made of an insulator material; Is coupled to the rear of the front member and made of a rear member made of a conductive material, the ground member is connected to the rear member.

The base member is made of an insulator material, and a ground part may be connected to the pin member.

In addition, the nanofiber manufacturing method of the present invention in order to achieve the above object, an arrangement step of disposing a nozzle member for electrospinning the nanofibers, the base member spaced from the nozzle portion coupled to the pin member; A pin protrusion step of disposing the pin member coupled to the base member to protrude more toward the nozzle portion than the base member; An electrospinning step of electrospinning the nanofibers through the nozzle unit; wherein the pin member is made of a conductor, and the nanofibers electrospun toward the base member from the nozzle unit in the electrospinning step is It is characterized in that it is first coupled to the end of the pin member protruding more than the base member.

The pin member is composed of a plurality, the nanofibers electrospun in the electrospinning step interconnects the pin members disposed adjacent to each other, the nanofiber between the pin members disposed closest to the plurality of pin members The most densely connected at.

The pin member is coupled to the base member so as to be movable in the front-rear direction. In the pin protrusion step, the pin member is pushed forward to the nozzle unit so that the end of the pin member protrudes more than the base member.

After the electrospinning step, the retracting step of retracting the pin member to the rear in the opposite direction of the nozzle portion; further comprising, the nano-coupled to the pin member by the retraction of the pin member in the retraction step Fiber is attached to the base member.

After the retraction step, the pin protrusion step, the electrospinning step and the retraction step are repeated to form a three-dimensional nanofibers on the base member.

According to the nanofiber manufacturing apparatus and method of the present invention as described above has the following effects.

The present invention can not only manufacture nanofibers of various shapes according to the arrangement of the pin member, the nanofibers can be easily formed by connecting while forming the connection between the pin member and the pin member can be easily produced aligned nanofibers. In addition, by moving the pin member in the front-rear direction, a nanofiber having a three-dimensional structure as well as a two-dimensional structure can be manufactured.

1 is a one-way perspective view of a nanofiber manufacturing apparatus according to an embodiment of the present invention,

Figure 2 is a perspective view of the other direction of the nanofiber manufacturing apparatus according to an embodiment of the present invention,

3 is a front view of the nanofiber manufacturing apparatus according to the embodiment of the present invention,

Figure 4 is a view showing a pin protrusion step in the method for producing nanofibers by the nanofiber manufacturing apparatus according to an embodiment of the present invention,

5 is a diagram illustrating an electrospinning step of electrospinning nanofibers through a nozzle unit in FIG. 4;

6 is a view showing a retraction step of retreating the pin member in FIG.

FIG. 7 is a view illustrating a pin protrusion step in which the pin member is advanced again in FIG. 6;

Figure 8 is an exemplary view showing a nanofiber coupled according to the arrangement of the pin member in the nanofiber manufacturing apparatus and method according to an embodiment of the present invention.

Figure 9 is a front view of the collector in the nanofiber manufacturing apparatus according to another embodiment of the present invention.

10 is a photograph of the nanofibers produced by the nanofiber manufacturing method according to an embodiment of the present invention.

1 is a perspective view of one direction of a nanofiber production apparatus according to an embodiment of the present invention, Figure 2 is a perspective view of the other direction of the nanofiber production apparatus according to an embodiment of the present invention, Figure 3 is a nano according to an embodiment of the present invention Figure 4 is a front view of the fiber manufacturing apparatus, Figure 4 is a view showing a pin protrusion step in the method for producing nanofibers by the nanofiber manufacturing apparatus according to an embodiment of the present invention, Figure 5 is a nanofiber through the nozzle portion in Figure 4 6 is a diagram illustrating an electrospinning step of electrospinning, FIG. 6 is a diagram illustrating a retreat step in which the pin member is retracted in FIG. 5, and FIG. 7 is a diagram showing a pin protrusion step in which the pin member is advanced again in FIG. 8 is an exemplary view illustrating nanofibers coupled according to an arrangement of pin members in a nanofiber manufacturing apparatus and a manufacturing method according to an embodiment of the present invention, and FIG. 9 is a view illustrating another embodiment of the present invention. Nano Island A front view of the collector in the production apparatus, Figure 10 is a photograph of the nanofiber produced by the nanofiber production method according to an embodiment of the invention.

1 to 3, the nanofiber manufacturing apparatus of the present invention comprises a nozzle unit 10 and the collector 20.

The nozzle unit 10 electrospins the nanofibers 40 made of a liquid polymer or the like.

The nozzle unit 10 is sufficient to use a conventional known.

In the drawing of the present embodiment, the nozzle unit 10 is installed to be movable in the left and right directions, but the nozzle unit 10 may be installed to be movable not only in the left and right directions but also in the front and rear directions and in the vertical direction.

The collector 20 is spaced apart from the nozzle unit 10 to collect the nanofibers 40 electrospun from the nozzle unit 10.

In the drawing of this embodiment, the collector 20 is installed to be movable in the front-rear direction, but the collector 20 may be installed to be movable in the left-right direction and the vertical direction as well as the front-rear direction.

The collector 20 includes a base member 21 and a pin member 25.

The base member 21 is formed in a flat plate shape and is spaced apart from the nozzle unit 10.

The base member 21 may be formed in various shapes as well as a flat plate shape.

In the present embodiment, the base member 21, the front member 22 facing the nozzle portion 10 and made of an insulator material, and the rear member (combined to the rear surface of the front member 22 and made of a conductor material) 23).

A ground part is connected to the rear member 23 made of a conductive material.

On the other hand, the base member 21 is made of an insulator material as shown in Figure 9, the rear of the pin member 25 made of a conductor material may be directly connected to the ground.

The pin member 25 is made of a conductor material, and a plurality of pin members 25 are coupled to the base member 21.

The pin member 25 protrudes further in the direction of the nozzle portion 10 than the base member 21. Therefore, when the electrospinning is performed in the direction of the base member 21 from the nozzle portion 10, Nanofiber 40 is bonded to the end of the pin member 25 than the base member 21.

As described above, the pin member 25 to which the nanofibers 40 are coupled may be fixedly coupled to the base member 21, but moves in the front-rear direction in which the nozzle unit 10 is disposed as in the present embodiment. It is preferable to be coupled to the base member 21 as possible.

That is, the pin member 25 is mounted to be movable in the front-rear direction in which the nozzle unit 10 is disposed with respect to the base member 21.

To this end, the base member 10 has a through hole 24 through which the pin member 25 penetrates.

In addition, the attachment force of the front member 22 is higher than the attachment force of the end of the pin member 25 in more detail than the attachment force of the base member 21 to the nanofiber 40.

Therefore, when the pin member 25 is retracted while the nanofiber 40 is coupled to the end of the pin member 25, the nanofiber 40 is attached to the base member 21, After the pin member 25 is advanced, the nanofibers 40 attached to the base member 21 may be maintained in the attached state.

The pin member 25 may be manually moved back and forth by the operator, but it is preferable to move the pin member 25 in the front and rear directions using the pin driver 30 as in the present embodiment.

In the present embodiment, the pin driving unit 30 includes a support 31 and a pressing member 34.

The support 31 is disposed at the rear of the base member 21 and moves forward and backward with the base member 21.

The support 31 includes a vertical support 32 mounted in the vertical direction, and a horizontal support 33 disposed in the horizontal direction and coupled to the vertical support 32 so as to be movable in the vertical direction.

The pressing member 34 is coupled to the support 31 in detail so as to be movable in the horizontal direction in the horizontal support 33.

In addition, the pressing member 34 is disposed behind the pin member 25 in detail behind the collector 20, and an end thereof is installed to be movable in the direction of the pin member 25.

By the forward and backward movement of the pressing member 34, the pin member 25 is moved in the front-rear direction with respect to the base member 21.

The structure in which the pressing member 34 moves in the front-back direction is sufficient to use various conventionally known structures, for example, a solenoid method and a magnet method.

That is, the pressing member 34 may move in the front-rear direction so that the pin member 25 may move in the front-rear direction with respect to the base member 21.

On the outer circumferential surface of the pin member 25, a locking step 26 is formed to be caught by the base member 21 when the pin member 25 moves forward to limit the moving distance.

Hereinafter, look at the nanofiber manufacturing method using the present invention made of the above-described configuration.

The nanofiber manufacturing method of the present invention comprises a batch step, a pin protrusion step, an electrospinning step, and a retraction step.

As shown in FIG. 3, the base member, which is spaced apart from the nozzle part 10 and the pin member 25, is coupled to the nozzle part 10 for electrospinning the nanofibers 40, as shown in FIG. 3. It is a step 21 to arrange.

In the pin protrusion step, as shown in FIG. 4, the pin member 25 coupled to the base member 21 is disposed to protrude more toward the nozzle unit 10 than the base member 21. to be.

As described above, the pin member 25 is pushed forward from the rear side by using the pin driving unit 30 to push the pin member 25 toward the front where the nozzle unit 10 is disposed. The end of the 25 is to protrude more than the base member (21).

At this time, the advance of the pin member 25, by adjusting the number of the pin member 25 according to the shape of the nanofibers to be produced, etc. to advance.

The electrospinning step is a step of electrospinning the nanofibers 40 through the nozzle unit 10, as shown in FIG.

When the electrospinning is made, the nanofiber 40 electrospun from the nozzle unit 10 toward the base member 21 is at the end of the pin member 25 which protrudes more than the base member 21. You will join first.

In addition, the electrospun nanofibers 40 interconnect the pin members 25 disposed adjacent to each other, and the nanofibers 40 are the pin members disposed closest to the plurality of pin members 25. The highest density is connected between 25.

In the retraction step, as shown in FIG. 6, after the electrospinning step, the pin member 25 is retracted to the rear side opposite to the nozzle part 10 by using the pressing member 34.

The nanofibers 40 that are coupled to the pin member 25 by the retraction of the pin member 25 in the retraction step is attached to the base member 21.

After the retraction step, as shown in FIG. 7, when the pin protruding step, the electrospinning step and the retreating step are repeated while protruding the pin member 25 using the pressing member 34, the base It is possible to form a three-dimensional nanofibers 40 having a thickness on the member 21.

At this time, since the adhesion of the base member 21 to the nanofiber 40 is higher than the adhesion of the pin member 25, the nanofiber 40 does not move when the pin member 25 advances. The state attached to the base member 21 can be maintained as it is.

The nanofibers 40 coupled to the pin member 25 may be formed in various shapes as shown in FIG. 8 according to the arrangement of the pin member 25.

The nanofibers 40 produced by the nanofiber manufacturing method of the present invention as described above is as shown in Figure 10.

As described above, the present invention may not only manufacture nanofibers 40 having various shapes according to the arrangement of the pin members 25, but the nanofibers 40 may be the pin members 25 and the pin members 25. The nanofibers 40 can be easily manufactured by being formed while connecting the nanofibers 40, and the pin member 25 is moved forward and backward so that the nanofibers 40 having a three-dimensional structure as well as a two-dimensional structure are moved. ) Can be prepared.

Nanofiber manufacturing apparatus and method of the present invention is not limited to the above-described embodiment, it can be carried out in a variety of modifications within the scope of the technical idea of the present invention.

The nanofibers can be manufactured not only in two dimensions but also in three dimensions, and can be applied to various fields using nanofibers as well as bio and medical fields.

Claims

A nanofiber manufacturing apparatus comprising: a nozzle unit for electrospinning nanofibers and a collector spaced apart from the nozzle unit to collect nanofibers electrospun from the nozzle unit;

The collector,

A base member spaced apart from the nozzle unit;

It comprises a; pin member of the conductor material coupled to the base member;

The pin member is further protruded in the direction of the nozzle portion than the base member, the nanofibers electrospun in the direction of the base member from the nozzle unit is coupled to the end of the pin member than the base member nano Textile manufacturing equipment.
The method according to claim 1,

The pin member is a nanofiber manufacturing apparatus, characterized in that coupled to the base member to be movable in the front and rear direction in which the nozzle portion is disposed.
The method according to claim 2,

The attachment force of the base member to the nanofiber is nanofiber manufacturing apparatus, characterized in that higher than the adhesion of the end of the pin member.
The method according to claim 2,

Nanofiber manufacturing apparatus characterized in that it further comprises a pin driving unit for moving the pin member in the front and rear direction.
The method according to claim 4,

The pin drive unit,

A support;

Is coupled to the support is disposed in the rear of the collector, the end of the pressing member to move in the direction of the pin member;

The pin member is moved back and forth with respect to the base member by the front and rear movement of the pressing member nanofiber manufacturing apparatus.
The method according to claim 5,

The support is,

Vertical support;

It comprises a; horizontal support coupled to be movable in the vertical direction with respect to the vertical support;

The pressing member is a nanofiber manufacturing apparatus, characterized in that coupled to the horizontal support so as to move in the horizontal direction.
The method according to claim 2,

The base member is formed with a through hole through which the pin member penetrates,

Nanofiber manufacturing apparatus, characterized in that the locking jaw is formed on the outer peripheral surface of the pin member so that the moving distance is limited to the base member when the pin member moves forward.
The method according to claim 2,

The base member,

A front member facing the nozzle unit and made of an insulator material;

Is coupled to the rear of the front member and made of a rear member made of a conductive material,

Nanofiber manufacturing apparatus, characterized in that the ground member is connected to the rear member.
The method according to claim 2,

The base member is made of an insulator material,

Nanofiber manufacturing apparatus, characterized in that the ground portion is connected to the pin member.
An arrangement step of disposing a nozzle unit for electrospinning the nanofibers, and a base member spaced from the nozzle unit and having a fin member coupled thereto;

A pin protrusion step of disposing the pin member coupled to the base member to protrude more toward the nozzle portion than the base member;

Electrospinning step of electrospinning the nanofibers through the nozzle unit;

The pin member is made of a conductor,

In the electrospinning step, the nanofibers electrospun toward the base member from the nozzle unit is characterized in that the first nano-fiber manufacturing method characterized in that coupled to the end of the pin member protruding more than the base member.
The method according to claim 10,

The pin member is made of a plurality,

The nanofibers electrospun in the electrospinning step are connected to the pin member disposed adjacent to each other,

The nanofiber is a method of manufacturing a nanofiber, characterized in that the most densely connected between the pin members disposed closest to the plurality of pin members.
The method according to claim 10,

The pin member is coupled to be movable in the front and rear direction with respect to the base member,

In the pin protrusion step, the pin member is pushed toward the front of the nozzle unit is disposed so that the end of the pin member protrudes more than the base member.
The method according to claim 12,

After the electrospinning step, the retracting step of retracting the pin member to the rear in the opposite direction of the nozzle portion;

The method of manufacturing a nanofiber, characterized in that the nanofibers that are coupled to the pin member by the retraction of the pin member in the retraction step.
The method according to claim 13,

Repeating the pin protrusion, electrospinning step and the retraction step after the retreat step, to form a nanofiber of the three-dimensional shape on the base member.