WO2015012418A1 - Dispositif d'électrofilage comprenant un tube polygonal - Google Patents

Dispositif d'électrofilage comprenant un tube polygonal Download PDF

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Publication number
WO2015012418A1
WO2015012418A1 PCT/KR2013/006475 KR2013006475W WO2015012418A1 WO 2015012418 A1 WO2015012418 A1 WO 2015012418A1 KR 2013006475 W KR2013006475 W KR 2013006475W WO 2015012418 A1 WO2015012418 A1 WO 2015012418A1
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WO
WIPO (PCT)
Prior art keywords
polygonal tube
tube
polygonal
electrospinning
spinning liquid
Prior art date
Application number
PCT/KR2013/006475
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English (en)
Korean (ko)
Inventor
김학용
남기택
백우일
라지쿠마르니르말라
펜츠헴라지
Original Assignee
전북대학교산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 전북대학교산학협력단 filed Critical 전북대학교산학협력단
Priority to PCT/KR2013/006475 priority Critical patent/WO2015012418A1/fr
Publication of WO2015012418A1 publication Critical patent/WO2015012418A1/fr

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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
    • D01D5/18—Formation of filaments, threads, or the like by means of rotating spinnerets
    • 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

Definitions

  • the present invention relates to an electrospinning apparatus comprising a polygonal tube, and more particularly, to an electrospinning apparatus including a polygonal tube rotating in place of a conventional nozzle as a mechanism for discharging the spinning liquid.
  • 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.
  • 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.
  • 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).
  • 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").
  • 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 improve the productivity by increasing the discharge amount per unit polygonal tube per unit time by electrospinning the spinning liquid with a polygonal tube instead of a conventional nozzle by using a combination of electrostatic and centrifugal force to solve these problems It is possible to eliminate the trouble of replacement and cleaning, to effectively prevent the occurrence of the drop, and to provide an electrospinning device capable of continuous production by continuously supplying spinning liquid.
  • the spinning liquid stored and stored in (i) the spinning liquid main tank (a), (ii) the spinning liquid main tank (b) for storing and storing the spinning liquid (tube block) d) and the spinning solution supply pump (c) and (iii) the spinning solution supplied to the polygonal tube (e) is supplied to the polygonal tube (e) while storing the spinning solution supplied from the spinning solution main tank (b), the high voltage is applied Tube blocks (d), (iv) polygonal tubes (e) arranged on the tube blocks (d) and rotating while electrospinning the spinning liquid in the collector direction, (v) in combination with the polygonal tubes (e) Polygon tube support (f), which is in the form of a cylindrical tube supporting the polygonal tube (e) while rotating on the tube block (d) (vi) is placed on top of the polygonal tube (e) while a high voltage is applied Collectors (i) that rotate at and accumulate nanofibers electrospun from polygonal tubes (
  • 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 top of the polygonal 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 a solution state rather than fibrous during electrospinning is achieved. have.
  • FIG. 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 polygonal tube (e) and polygonal tube support (f) arranged on the tube block (d) of FIG.
  • Figure 3 (A) to (E) is a cross-sectional view of the polygonal tube (e) constituting the electrospinning of the present invention.
  • FIG. 4 is an enlarged cross-sectional view of an example of a polygonal tube (e) having a rectangular cross section.
  • Example 5 is an electron micrograph of the nanofiber web prepared in Example 1.
  • FIG. 6 is an enlarged view of FIG. 5.
  • the spinning liquid is stored and stored in the spinning liquid main tank (a), (ii) the spinning liquid main tank (b) tube block for storing and storing the spinning liquid (d) and the spinning solution supply pump (c) for supplying the polygonal tube (e), (iii) the spinning solution supplied from the spinning solution main tank (b) is supplied to the polygonal tube (e) while storing a high voltage, (B) a polygonal tube (e) arranged on the tube block (d) and rotating while electrospinning the spinning liquid in the direction of the collector, (v) coupled to the polygonal tube (e) Low-voltage polygon tube support (f), (vi) is located on top of the polygonal tube (e) in the form of a cylindrical tube to support the polygonal tube (e) while rotating in a state arranged on the tube block (d) Collector (i), (vii) the tube, which rotates in the state and accumulates the nanofibers electrospun from the polygonal
  • FIG. 1 is a schematic view of the electrospinning apparatus according to the present invention, the polygonal tube support (f) is omitted without showing in detail the state connected to the power transmission mechanism (h).
  • the polygonal tube support (f) is rotated by a polygonal tube support rotating device consisting of a motor (g) and a power transmission mechanism (h), thereby rotating the polygonal tube (e) coupled with the polygonal tube support (f). Done.
  • the rotation speed of the polygonal tube (e) is generally set to 50 rpm or more.
  • the rotational speed is too low, the centrifugal force is low, the nanofiber forming ability is lowered. If the rotational speed is too high, the drop phenomenon that the spinning solution is injected into the solution itself rather than nanofibers in the polygonal tube (e) is not preferable.
  • the appropriate rotational speed of the polygonal tube (e) depends on the shape and diameter of the polygonal tube (e), so the rotational speed of the polygonal tube (e) is not limited to a specific range.
  • the polygonal tube supports f are connected to and rotate with the motor g by a power transmission mechanism h, which is a gear or a belt.
  • each of the polygonal tube supports f is provided with gears, which are power transmission mechanisms h, 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 a portion of the polygonal tube e and the polygonal tube support f arranged on the tube block d in FIG. 1.
  • a bearing k is attached to each of the polygonal 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.
  • each of the polygonal tube supports f is connected to and rotates with the motor g by a belt which is a power transmission mechanism h.
  • the polygonal tube (e) may be integrally fixed to the polygonal tube supporter (f) in a non-separable manner, or may be secured to be detachable by a one-touch method, but it may be detachably fixed. It is preferable because it is easy to clean and replace parts.
  • the polygonal tube support f has a cylindrical tube shape and preferably has a diameter of 3 mm or more.
  • the shape of the Taylor cone formed during the electrospinning cannot be generated in a large amount at the corners of the polygonal tube e, and thus the discharge amount cannot be increased.
  • the polygonal tube (e) is preferably a polygonal shape having a cross-sectional shape having three or more angles (edges) as exemplarily shown in FIGS. 3 (A) to (E).
  • 3A to 3E are cross-sectional views of the polygonal tube e.
  • the point at which the spinning liquid is electrospun is not uniform, and fewer Taylor cones are generated.
  • the spinning liquid is mainly spun at the end (corner) of the polygon having a large specific surface area. Therefore, it is desirable to form the shape of the end portion (corner portion) of the polygon in which the nanofibers are formed to keep the specific surface area as wide as possible, and to form as many Taylor cones as possible, increase the discharge amount as much as possible, and improve the radioactivity.
  • the polygonal tube supports (f) are arranged in a straight or diagonal direction on the tube block (d), so that more polygonal tube supports (f) can be arranged on the tube block (d) to increase productivity per unit time Increase and the device is simplified.
  • 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 metering pump (c).
  • the spinning solution supplied to the tube block (d) is attached to the polygonal tube support (f) on the tube block (d) is located above the polygonal tube (e) through the rotating polygonal tube (e) while high voltage
  • the nanofibers are integrated on the collector (i) by electrospinning toward the rotating collector (i) in the jammed state to produce a nanofiber web.
  • the nanofiber web is manufactured as described above, electrospinning is performed by using both electrostatic and centrifugal forces to increase the discharge amount per polygonal tube per unit time, thereby greatly improving productivity.
  • the operation can be omitted, the collector (i) is located on the top of the polygonal tube (e) to prevent the drop phenomenon to improve the quality of the nanofiber web.
  • polyvinyl alcohol (Aldrich, USA) was dissolved in distilled water by 10% by weight to prepare a spinning solution.
  • a high voltage is applied to a predetermined amount of the spinning liquid stored in the spinning liquid main tank (b) through the metering pump (c), and the rectangular tube (e) and the square tube support (f) are connected. It supplied to the tube block (d) arrange
  • a voltage of 45 kV was applied to the tube block d.
  • the discharge amount per unit time per square tube (e) was 10g / min.
  • the width of the collector (i) was 2,2m
  • the distance between the collector (i) and the rectangular tube (e) was adjusted to 27cm.
  • the inner radius (r) of the square tube (e) was 15mm
  • the distance (F L ) from the center of the inner circle of the square tube to the corner portion was adjusted to 20mm.
  • the square tube (e) was connected to the motor by a belt which is a power transmission mechanism was rotated at 150rpm.
  • Electron micrographs of the nanofiber web prepared as described above were as shown in Figs.
  • the average diameter of the nanofibers was 250 nm and the weight of the nanofiber webs was 43 g / m 2.
  • the diameters of the nanofibers constituting the nanofiber web were very uniform, and no drop phenomenon occurred.
  • the present invention is used for electrospinning high quality nanofibers with high productivity.

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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

L'invention concerne un dispositif d'électrofilage comprenant un tube polygonal caractérisé en ce que, en tant que mécanisme d'électrofilage de liquide de filage dans la direction du collecteur, un tube polygonal rotatif est utilisé à la place d'une buse classique. La présente invention est avantageuse en ce que, en pratiquant l'électrofilage en utilisant à la fois la force électrostatique et la force centrifuge, la quantité de débit par unité de tube polygonal par unité de temps augmente, ce qui améliore ainsi grandement la productivité ; en comparaison avec l'utilisation d'une buse, le désagrément du remplacement et du nettoyage de la buse est éliminé, ce qui simplifie ainsi le processus de production ; et le positionnement du collecteur sur la partie supérieure du tube polygonal empêche le liquide de filage de couler goutte-à-goutte sur le collecteur à l'état de solution, et non en phase fibreuse, pendant l'électrofilage (phénomène de la "goutte"), ce qui améliore ainsi la qualité des voiles de nanofibres produits.
PCT/KR2013/006475 2013-07-24 2013-07-24 Dispositif d'électrofilage comprenant un tube polygonal WO2015012418A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2013/006475 WO2015012418A1 (fr) 2013-07-24 2013-07-24 Dispositif d'électrofilage comprenant un tube polygonal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2013/006475 WO2015012418A1 (fr) 2013-07-24 2013-07-24 Dispositif d'électrofilage comprenant un tube polygonal

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107653498A (zh) * 2017-11-10 2018-02-02 安徽翰联纺织有限公司 静电纺丝制备掺杂抗菌颗粒纤维的方法、静电纺丝机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100743502B1 (ko) * 2006-08-23 2007-07-27 전북대학교산학협력단 전기방사를 이용한 나노입자의 제조방법
US20090189318A1 (en) * 2004-01-30 2009-07-30 Kim Hak-Yong Bottom-up electrospinning devices, and nanofibers prepared by using the same
KR20100019173A (ko) * 2008-08-08 2010-02-18 코오롱패션머티리얼 (주) 나노섬유 웹의 제조방법
KR20120064385A (ko) * 2010-12-09 2012-06-19 전북대학교산학협력단 다각형 튜브를 포함하는 전기방사장치
KR20120070780A (ko) * 2010-12-22 2012-07-02 전북대학교산학협력단 다수개의 토출홀들이 형성된 방사 튜브를 포함하는 전기방사장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090189318A1 (en) * 2004-01-30 2009-07-30 Kim Hak-Yong Bottom-up electrospinning devices, and nanofibers prepared by using the same
KR100743502B1 (ko) * 2006-08-23 2007-07-27 전북대학교산학협력단 전기방사를 이용한 나노입자의 제조방법
KR20100019173A (ko) * 2008-08-08 2010-02-18 코오롱패션머티리얼 (주) 나노섬유 웹의 제조방법
KR20120064385A (ko) * 2010-12-09 2012-06-19 전북대학교산학협력단 다각형 튜브를 포함하는 전기방사장치
KR20120070780A (ko) * 2010-12-22 2012-07-02 전북대학교산학협력단 다수개의 토출홀들이 형성된 방사 튜브를 포함하는 전기방사장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107653498A (zh) * 2017-11-10 2018-02-02 安徽翰联纺织有限公司 静电纺丝制备掺杂抗菌颗粒纤维的方法、静电纺丝机

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