KR101172266B1 - Electrospinning device comprising spinning tube with extruding holes - Google Patents
Electrospinning device comprising spinning tube with extruding holes Download PDFInfo
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- KR101172266B1 KR101172266B1 KR20100132233A KR20100132233A KR101172266B1 KR 101172266 B1 KR101172266 B1 KR 101172266B1 KR 20100132233 A KR20100132233 A KR 20100132233A KR 20100132233 A KR20100132233 A KR 20100132233A KR 101172266 B1 KR101172266 B1 KR 101172266B1
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- tube
- spinning
- discharge holes
- collector
- electrospinning apparatus
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0069—Electro-spinning characterised by the electro-spinning apparatus characterised by the spinning section, e.g. capillary tube, protrusion or pin
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The present invention relates to an electrospinning apparatus including a spinning tube having a plurality of discharge holes, which is a mechanism used for electrospinning the spinning liquid in the direction of the collector. It characterized in that to use.
According to the present invention, electrospinning is performed using a combination of electrostatic and centrifugal forces, thereby increasing the amount of discharge per unit polygonal tube per unit time, greatly improving productivity, and eliminating the need for nozzle replacement and cleaning compared to using a nozzle. Since the collector is located on the top of the spinning tube in which a plurality of discharge holes are formed, the nanofiber web is manufactured by preventing the spinning liquid from dropping onto the collector in a solution state rather than a fibrous state during electrospinning. It has the effect of improving quality.
Description
The present invention relates to an electrospinning apparatus including a spinning tube having a plurality of discharge holes, and more particularly, to a spinning liquid, and a spinning tube having a structure in which a plurality of discharge holes are formed instead of a conventional nozzle. It relates to an electrospinning apparatus.
Conventional electrospinning apparatuses have mainly adopted a nozzle (Nozzle) fixed as a mechanism for discharging the spinning liquid, as disclosed in Republic of Korea Patent No. 10-0420460.
However, since the conventional electrospinning apparatus electrospins the spinning liquid through a fixed nozzle, the electrospinning is performed only depending on the electrostatic force, so that the discharge amount per nozzle unit nozzle per unit time is very low to 0.01g, resulting in low productivity. Difficult problems, nozzle replacement and cleaning are very complicated and cumbersome.
In general, the production of nanofibers through electrospinning is in the order of 0.1-1 g per hour, and the solution discharge rate is very low, 1.0-5.0 mL per hour [D. H. H. Renecker et al., Nanptechnology 2006, VOl 17, 1123].
Another conventional electrospinning apparatus is an electrospinning apparatus for electrospinning the spinning liquid (polymethyl methacrylate solution dissolved in chlorobenzene) using only a centrifugal force by using a cylinder rotating at a high speed of 3,000 rpm or more. K. Kern et al., Published in Nano Letters (Nano Letters, 2008, Vol 8, No. 4, 1187-1191).
However, since the conventional electrospinning devices are electrospun using only centrifugal force without using electrostatic force, the yield decreases, and it is difficult to continuously supply the spinning liquid into the cylinder, which makes continuous production difficult.
In another conventional electrospinning apparatus, Jinyuan of Nanzhou University, electrospinning without nozzle using electrostatic force and centrifugal force by supplying polyvinylpyrilidone solution while applying high voltage to a conical container rotating at 50rpm Zhou et al. Are published in a small paper published in Small, 2010 (Small, 2010 Vol 6, 1612-1616).
However, the conventional electrospinning device can improve the output per unit time in the form of a nozzle by utilizing the centrifugal force and the electrostatic force, but it is difficult to continuously produce by supplying the spinning liquid in the conical container, and the lower portion of the conical container There is a problem that the collector is located and the spinning liquid falls into a solution state rather than a fiber form (hereinafter referred to as "drop generation phenomenon").
In addition, a method of electrospinning a system in which a large number of nozzles are arranged on a nozzle plate is well known [H. Y. Kim, WO2005073441, WO2007035011.
The disadvantage of the conventional electrospinning method is that the production of nanofibers per unit hole is very low, and there is a problem in that nozzle cleaning is cumbersome.
The problem of the present invention is to use a combination of electrostatic and centrifugal force to solve the above problems, a plurality of discharge holes are formed in place of the conventional nozzle and by electrospinning the spinning liquid with a spinning spinning tube per unit spinning tube per unit time The discharge amount is increased, the productivity is greatly improved, the trouble of nozzle replacement and cleaning can be eliminated, the drop occurrence phenomenon can be effectively prevented, and the spinning solution is supplied continuously to provide an electrospinning device capable of continuous production.
In order to achieve the above object, in the present invention (i) the spinning liquid stored and stored in (i) the spinning liquid main tank (b), (ii) the spinning liquid main tank (b) for storing and storing the spinning liquid (tube block) d) and a spinning solution supply pump (c) for supplying a spinning tube (e) having a plurality of discharge holes (h) formed therein, (i) the spinning solution while storing the spinning solution supplied from the spinning solution main tank (b) e) and a plurality of discharge holes (h) are formed in the tube block (d), (i) under high voltage, and are arranged on the tube block (d) to rotate the discharge holes (h). Spinning tube (e) (i) which electrospins the spinning liquid in the direction of the collector through the spinning tube (e) while being coupled to the spinning tube (e) and arranged in a state arranged on the tube block (d) In the state in which a high voltage is applied while being placed on the top of the spinning tube support (f) and (i) the spinning tube (e) A collector (i) that rotates and accumulates nanofibers that are electrospun from the discharge holes (h) formed in the spinning tube (e), (iii) applying a high voltage to each of the tube block (d) and the collector (i) Radiation tube support consisting of a high voltage generator (a) and (iii) a motor (g) and a power transmission mechanism (p) selected from a gear and a belt connecting the motor (g) and the radiation tube support (f). It provides an electrospinning device consisting of electrospinning devices comprising a spinning tube formed with a plurality of discharge holes, characterized in that it consists of rotating devices.
According to the present invention, electrospinning is performed using a combination of electrostatic and centrifugal forces, thereby increasing the amount of discharge per unit spinning tube per unit time, greatly improving productivity, and eliminating the need for nozzle replacement and cleaning compared to using a nozzle. Since the collector is located on the top of the spinning tube, the effect of improving the quality of the nanofiber web produced by preventing the dropping (drop phenomenon) of the spinning liquid on the collector in the form of a solution rather than fibrous during electrospinning is achieved. have.
1 is a schematic view of the electrospinning apparatus according to the present invention.
FIG. 2 is an enlarged view of a portion of the spinning tube e and the spinning tube support f arranged in the tube block d in FIG.
3 to 9 are cross-sectional views showing an arrangement of discharge holes h formed on the spinning tube e constituting the electrospinning device of the present invention.
10 (a) to 10 (z) are enlarged cross-sectional views of one example of a cross-sectional shape of the discharge hole h formed on the spinning tube e.
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
First, as shown in FIG. 1, the present invention relates to (i) a spinning liquid main tank (b) and (ii) a spinning liquid main tank (b) that stores and stores the spinning liquid. (d) and a spinning solution supply pump (c) for supplying a spinning tube (e) having a plurality of discharge holes (h) formed therein, (i) the spinning solution while storing the spinning solution supplied from the spinning solution main tank (b) (e) a plurality of discharge holes (h) are formed in the tube block (d) and (i) which are supplied with high voltage, and are arranged on the tube block (d) to rotate the discharge holes (h). Spinning tube (e) for electrospinning the spinning liquid in the collector direction through the (e), (i) the spinning tube (e) while rotating in a state arranged on the tube block (d) in combination with the spinning tube (e) Spinning tube support (f) in the form of a supporting tube (f), which is located on the top of the spinning tube (e) while rotating under a high voltage applied , A collector (i) for integrating the nanofibers electrospun from the discharge holes (h) formed in the spinning tube (e), (iii) a high voltage generating a high voltage applied to each of the tube block (d) and the collector (i) Apparatus (a) and (iii) a spinning tube support rotating device comprising a motor (g) and one power transmission mechanism (p) selected from among gears and belts connecting the motor (g) and the spinning tube support (f). Electrospinning apparatus including a radiation tube formed with a plurality of discharge holes, characterized in that consisting of a.
1 is a schematic view of the electrospinning apparatus according to the present invention, the radiation tube support (f) is omitted without showing in detail the state connected to the power transmission mechanism (p).
The spinning tube support f is rotated by a spinning tube support rotating device consisting of a motor g and a power transmission mechanism p, whereby the spinning tube e coupled with the spinning tube support f is also rotated. Done.
The rotation speed of the spinning tube (e) is generally 50 rpm or more.
If the rotation speed is too low, the centrifugal force is low, the nanofiber forming ability is lowered. If the rotation speed is too high, a drop phenomenon occurs in which the spinning solution is injected into the solution itself, not nanofibers, in the discharge hole (h) formed in the spinning tube (e). Not preferred.
However, since the appropriate number of rotations of the spinning tube (e) depends on the diameter, number, number of array rows, and arrangement of the discharge holes (h) formed in the spinning tube (e), in the present invention, the number of rotations is limited to a specific range. It is not.
Specifically, the spinning tube supports f rotate in connection with the motor g by a power transmission mechanism p, which is a gear or a belt.
As a specific embodiment, each of the radiating tube supports f is provided with gears, which are power transmission mechanisms p, engaged with each other, as shown in FIG. 2, and one of the gears is connected to the motor g. Rotate in engagement with another connected gear.
FIG. 2 is a detailed enlarged view of the portion of the spinning tube e and the spinning tube support f arranged on the tube block d in FIG. 1.
As shown in FIG. 2, a bearing k is attached to each of the radiation tube supports f.
The bearing (k) is preferably made of ceramics, metals or high-performance polymers, etc., depending on the corrosiveness of the solvent used to produce the spinning solution.
In another specific embodiment, each of the polygonal tube supports f is rotated in connection with the motor g by a belt which is a power transmission mechanism p.
The radiation tube (e) may be integrally fixed to the radiation tube supporter (f) in a non-separable manner, or may be secured to be detachable in a one-touch manner, but it may be detachably fixed. It is preferable because it is easy to clean and replace parts.
The spinning tube support f is preferably a cylindrical tube, having a diameter of 3 mm or more, but is not necessarily cylindrical.
In the spinning tube e, a plurality of discharge holes h are arranged on the spinning tube e as exemplarily shown in FIGS. 3 to 9.
Specifically, the discharge holes (h) formed in the spinning tube (e) are arranged in the circumferential direction or diagonal direction on the spinning tube (e).
3 to 9 are cross-sectional schematic diagrams illustrating the arrangement method of the discharge holes h and the cross-sectional shape of the discharge holes h formed on the spinning tube e.
Specifically, as shown in FIG. 3, the discharge holes h having a slit shape may be arranged in the form of alternately changing the long axis / short axis direction on the same concentric circle along the circumferential direction on the radiation tube e.
In addition, as illustrated in FIG. 4, the slit-shaped discharge holes h may be arranged along the circumferential direction on the radiation tube e in the long axis / short axis direction on the same concentric circle.
In addition, as shown in FIG. 5, the discharge holes h having a slit shape may be arranged on the radiating tube e in a manner of changing the long axis / short axis direction by different concentric circles along the circumferential direction.
In addition, as shown in FIG. 6, the discharge holes h in the form of arrow marks may be arranged on the radiation tube e in the same direction in the discharge holes h facing each other in all concentric circles along the circumferential direction. As illustrated in FIG. 7, the discharge holes h in the form of arrow marks may be arranged in different directions on the radiating tube e to face each other in different concentric circles along the circumferential direction. .
Also, as shown in FIG. 8, different shapes, for example, a slit shape and an asterisk shape, may be arranged alternately on the same concentric circle along the circumferential direction on the radiation tube e, as shown in FIG. 9. Likewise, discharge holes h of the same shape are arranged on the inner concentric circle along the circumferential direction on the radiation tube e, for example, asterisk, and different from the discharge holes arranged on the inner concentric circle on the outer concentric circle, eg For example, the slit discharge holes h may be arranged.
Since the size of the discharge holes h and the distance between the discharge holes h vary depending on the shape and arrangement method of the discharge holes h, the present invention is not particularly limited thereto.
In other words, the cross-sectional shape of the discharge hole (h) formed in the spinning tube (e) has a circular, slit-shaped, two or more angles as exemplarily shown in Figure 10 (a) to Figure 10 (z). Polygons, Hangul consonant forms, Hangul vowel forms, English alphabet forms, numeric forms such as 1, 2, Greek numeral forms, Greek character forms, various marker forms such as arrows, and the like, and are illustrated by way of example in FIGS. 8 to 9. As described above, two or more discharge holes h having different shapes may be arranged together on the same radiation tube e.
As the collector i, an endless belt, a drum or a roller is used.
If the collector (i) is an endless belt, a nanofiber web is produced, and in the case of a drum or a roller, a nanofiber filament is produced.
In this case, the electrospun nanofibers are arranged in the direction of rotation of the collector (i) in the form of a drum or roller, and the nanofiber filaments are manufactured by concentrating the arranged nanofibers.
The spinning tube supports (f) are arranged in a straight or diagonal direction on the tube block (d), thereby allowing more spinning tube supports (f) to be arranged on the tube block (d) to increase productivity per unit time. Increase and the device is simplified.
Next, with reference to Figure 1 looks at an example of a method for producing a nanofiber web with an electrospinning apparatus according to the present invention.
After dissolving in a polymer solvent, a predetermined amount of spinning liquid stored in the spinning liquid main tank (b) is supplied to the tube block (d) through which a high voltage is applied through a supply pump (c). In this way, the spinning liquid supplied to the tube block d is attached to the spinning tube support f on the tube block d through the discharge holes h formed in the spinning tube e, which rotates. The nanofibers are fabricated by integrating the nanofibers onto the collectors i by electrospinning toward the rotating collectors i while being placed at the top and a high voltage is applied thereto.
When the nanofiber web is manufactured as described above, electrospinning is performed by using both electrostatic and centrifugal forces to increase the discharge amount per spinning tube per unit time, thereby greatly improving productivity, and the cumbersome nozzle replacement and cleaning due to the conventional nozzle. The operation can be omitted, and the collector (i) is located on the top of the spinning tube (e) to prevent the drop phenomenon to improve the quality of the nanofiber web.
Hereinafter, the present invention will be described in more detail with reference to Examples.
However, the present invention is not limited by the following examples.
Example One
First, polyvinyl alcohol (Aldrich, USA) was dissolved in distilled water by 10% by weight to prepare a spinning solution.
Next, as shown in FIG. 1, a high voltage is applied to a predetermined amount of the spinning liquid stored in the spinning liquid main tank b through the supply pump c, and the discharge holes h of the slit type are arranged and formed as shown in FIG. 4. The spinning tube (e) and the spinning tube support (f) were fed to the tube block (d) arranged in a closed state.
The slit-shaped discharge hole h has a width of 0.5 mm, a length of 3 mm, and the radiation tube e has a diameter of 50 mm, and the eighteen concentric circles are arranged along the circumferential direction of the radiation tube e. The discharge holes h are arranged, and 36 discharge holes are arranged in the outer concentric circles, and 54 discharge holes are arranged as a whole.
A voltage of 45 kV was applied to the tube block d.
Subsequently, the spinning liquid supplied to the tube block d is arranged in the spinning tube e as described above, and is discharged in the direction of the collector i located above the spinning tube e through the discharge holes h formed. Nanofibers formed by spinning were integrated on the collector (i) to prepare a nanofiber web.
At this time, the discharge amount per unit time per spinning tube (e) was 18g / min.
At this time, a voltage of 45 kV was applied to the collector i and the collector was rotated at a rotation speed of 3.6 m / min.
In addition, the width of the collector (i) was 2,2m, the distance between the collector (i) and the spinning tube (e) was adjusted to 27cm.
In addition, the spinning tube (e) was rotated at 150rpm by connecting to the motor by a belt which is a power transmission mechanism.
Thus, the average diameter of the nanofibers was 220 nm, and the weight of the nanofiber webs was 41.5 g / m 2.
The diameters of the nanofibers constituting the nanofiber web were very uniform, and no drop phenomenon occurred.
a: high voltage generator b: spinning liquid main tank
c: spinning liquid supply pump d: tube block
e: spinning tube f: spinning tube support
h: discharge hole formed on the spinning tube
g: motor p: power train
i: collector k: bearing
Claims (10)
(Ii) a spinning liquid supply pump (c) for supplying spinning liquid stored and stored in the spinning liquid main tank (b) to a spinning tube (e) in which a tube block (d) and a plurality of discharge holes (h) are formed;
(Iii) a tube block (d) for supplying to the spinning tube (e) while storing the spinning liquid supplied from the spinning liquid main tank (b),
(Iv) a plurality of discharge holes h are formed, which are arranged on the tube block d and rotate to electrospin the spinning liquid in the collector direction through the discharge holes h;
(Iii) a spinning tube support (f) in the form of a tube that supports the spinning tube (e) while rotating while being arranged on the tube block (d) in a state coupled with the spinning tube (e);
(Iii) a collector (i) which is located on the top of the spinning tube (e) and rotates under a high voltage and collects nanofibers electrospun from the discharge holes (h) formed in the spinning tube (e).
(Iii) a high voltage generator (a) for applying a high voltage to each of the tube block (d) and the collector (i);
(Iii) consisting of a spinning tube support rotating device consisting of a motor (g) and a gear and belt connecting said motor (g) and said spinning tube support (f) with one kind of power transmission mechanism (p) selected. Electrospinning apparatus comprising a radiation tube formed with a plurality of discharge holes characterized in that.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20100132233A KR101172266B1 (en) | 2010-12-22 | 2010-12-22 | Electrospinning device comprising spinning tube with extruding holes |
| PCT/KR2011/009935 WO2012087025A2 (en) | 2010-12-22 | 2011-12-21 | Electrospinning apparatus comprising a spinning tube having a plurality of spounting holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20100132233A KR101172266B1 (en) | 2010-12-22 | 2010-12-22 | Electrospinning device comprising spinning tube with extruding holes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20120070780A KR20120070780A (en) | 2012-07-02 |
| KR101172266B1 true KR101172266B1 (en) | 2012-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR20100132233A KR101172266B1 (en) | 2010-12-22 | 2010-12-22 | Electrospinning device comprising spinning tube with extruding holes |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101172266B1 (en) |
| WO (1) | WO2012087025A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015008882A1 (en) * | 2013-07-19 | 2015-01-22 | 전북대학교산학협력단 | Electrospinning apparatus comprising spinning tubes having plurality of discharge holes |
| KR20150129874A (en) * | 2014-05-12 | 2015-11-23 | 주식회사 우리나노 | Electrospining tube system for manfacturing nanofiber |
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| KR101354511B1 (en) * | 2012-09-03 | 2014-01-23 | 주식회사 우리나노 | Spinning tube for manufacturing nanofiber and method of manufacturing nanofiber by thereby |
| KR101406117B1 (en) * | 2013-04-15 | 2014-06-16 | 전북대학교산학협력단 | Method of manufacturing nanofiber via centrifugal forces and air current |
| CN103334166B (en) * | 2013-06-18 | 2015-11-25 | 清华大学 | Electrospinning liquid filament forming device and electrostatic spinning machine |
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| WO2015012418A1 (en) * | 2013-07-24 | 2015-01-29 | 전북대학교산학협력단 | Electrospinning device comprising polygonal tube |
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| CN108034995B (en) * | 2018-01-12 | 2023-09-26 | 华南协同创新研究院 | Solid needle electrostatic spinning equipment |
| CN112575393A (en) * | 2020-12-15 | 2021-03-30 | 苏州大学 | Sawtooth groove-gear rolling type electrostatic spinning device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100780346B1 (en) | 2006-09-19 | 2007-11-30 | 주식회사 아모메디 | An electro-centrifugal spinning apparatus and a method for mass production of nano-fibers using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070047872A (en) * | 2005-11-03 | 2007-05-08 | 김학용 | Method of manufacturing multi-layer textile comprising nanofiber layer |
| KR100843269B1 (en) * | 2007-05-07 | 2008-07-02 | 박종철 | Spinning nozzle block for electrospinning |
| KR20100019169A (en) * | 2008-08-08 | 2010-02-18 | 코오롱패션머티리얼 (주) | Method of manufacturing nanofiber web |
| KR101158553B1 (en) * | 2008-12-30 | 2012-06-20 | (주)엔티시 | electric spinning apparatus |
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2010
- 2010-12-22 KR KR20100132233A patent/KR101172266B1/en active IP Right Grant
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2011
- 2011-12-21 WO PCT/KR2011/009935 patent/WO2012087025A2/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100780346B1 (en) | 2006-09-19 | 2007-11-30 | 주식회사 아모메디 | An electro-centrifugal spinning apparatus and a method for mass production of nano-fibers using the same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015008882A1 (en) * | 2013-07-19 | 2015-01-22 | 전북대학교산학협력단 | Electrospinning apparatus comprising spinning tubes having plurality of discharge holes |
| KR20150129874A (en) * | 2014-05-12 | 2015-11-23 | 주식회사 우리나노 | Electrospining tube system for manfacturing nanofiber |
| KR101602350B1 (en) | 2014-05-12 | 2016-03-11 | 전북대학교산학협력단 | Electrospining tube system for manfacturing nanofiber |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20120070780A (en) | 2012-07-02 |
| WO2012087025A3 (en) | 2012-10-18 |
| WO2012087025A2 (en) | 2012-06-28 |
| WO2012087025A9 (en) | 2012-11-22 |
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