CN103215658A - Novel static electrospinning method - Google Patents
Novel static electrospinning method Download PDFInfo
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- CN103215658A CN103215658A CN2012100197951A CN201210019795A CN103215658A CN 103215658 A CN103215658 A CN 103215658A CN 2012100197951 A CN2012100197951 A CN 2012100197951A CN 201210019795 A CN201210019795 A CN 201210019795A CN 103215658 A CN103215658 A CN 103215658A
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- electrospinning
- linear pattern
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- pattern gap
- gap nozzle
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Abstract
The invention provides a novel static electrospinning method, wherein a high voltage power supply, a liquid supply device, an electrospinning sprayer and a receiving device are used. The liquid supply device supplies an electrospinning liquid to the electrospinning sprayer. The nozzle of the electrospinning sprayer is a linear slit nozzle. The linear slit of the linear slit nozzle is greater than or equal to 0.1mm wide, and is greater than or equal to 4mm long, and the length-width ratio is greater than or equal to 10. The high voltage power supply forms a high voltage electric field between the linear slit nozzle and the receiving device. Static electrospinning is performed by the electrospinning liquid through the linear slit nozzle. The electrospinning sprayer provided with the plurality of linear slit nozzles is preferably parallely arranged or radially arranged (converged and communicated in radiation center). The width of the linear slit of the linear slit nozzle is preferably 0.2-2mm. An assistant electrode can be arranged between the linear slit nozzle and the receiving device. According to the method provided by the invention, the static electrospinning efficiency is high, and continuous and homogeneous ultra-thin film-like substances or coatings can be spinned.
Description
One, technical field
The present invention relates to static electrospinning method, particularly a kind of novel static electrospinning method belongs to static and uses and static spinning technique field.
Two, background technology
Because electrostatic spinning can spin nanofiber, therefore risen the research boom of electrostatic spinning in recent years both at home and abroad.But the static electrospinning all adopts circular hole nozzle or injection needle nozzle to carry out so far, because spray orifice is very little, so electrospinning production efficiency is very low, and such as adopting single-hole nozzle or single needle nozzle electrospinning, common spinning liquid efficient is only about 1 milliliter/hour.In order to improve electrospinning efficient, prior art have to arranging multiplayer circular hole nozzle or pinhole nozzle on the electrospinning shower nozzle, often be difficult to occur jet but be in the nozzle electrospinning liquid of core during electrospinning owing to be subjected to the electrostatic interaction of nozzle electrospinning liquid on every side, therefore the mode of arranging multiplayer circular hole nozzle or pinhole nozzle in fact often can not improve electrospinning efficient well and guarantee the electrospinning quality on the electrospinning shower nozzle.Particularly, prior art all is to adopt circular hole nozzle or pinhole nozzle, so electrospinning can only obtain fiber and fiber web, can not obtain the electrospinning membranoid substance or the electrospinning coating of continuous homogeneous.
Three, summary of the invention
The purpose of this invention is to provide a kind of new and effective method of static electrospinning spinning fibre and the method that the static electrospinning spins continuous homogeneous membranoid substance.
The technical solution that realizes the object of the invention is: a kind of novel static electrospinning method, comprise high voltage source, liquid feed device, electrospinning shower nozzle and receiving system, liquid feed device is supplied with electrospinning liquid to the electrospinning shower nozzle, the nozzle of electrospinning shower nozzle is the linear pattern gap nozzle, linear pattern slit width 〉=0.1 of linear pattern gap nozzle millimeter, length 〉=4 millimeter and length-width ratio 〉=10, the linear pattern gap nozzle is communicated with the high-field electrode of high voltage source, the earth electrode of high voltage source is connected with receiving system, form high voltage electric field between linear pattern gap nozzle and receiving system, electrospinning liquid carries out the static electrospinning by the linear pattern gap nozzle.
For novel electrostatic electrospinning method of the present invention, on 1 electrospinning shower nozzle 1 linear pattern gap nozzle can only be arranged, the linear pattern gap nozzle of (promptly more than 2 or 2) more than 1 also can be arranged.
For the situation that the linear pattern gap nozzle more than 2 or 2 is arranged on 1 electrospinning shower nozzle, all linear pattern gap nozzles are arranged as preferable to be the mode that is arranged in parallel on the electrospinning shower nozzle.
For the situation that the linear pattern gap nozzle more than 3 or 3 is arranged on 1 electrospinning shower nozzle, the arrangement of all linear pattern gap nozzles on the electrospinning shower nozzle preferably, all linear pattern gap nozzles radially mode arrange or all linear pattern gap nozzles radially mode arrange and converge connection at radiation center.
For novel electrostatic electrospinning method of the present invention, the linear pattern slit width of linear pattern gap nozzle is 0.2～2 millimeter scope preferably.
For novel electrostatic electrospinning method of the present invention, the linear pattern slit length of linear pattern gap nozzle is best 〉=and 10 millimeters.
For novel electrostatic electrospinning method of the present invention, around the linear pattern gap nozzle walled thickness best≤0.3 millimeter or linear pattern gap nozzle around chamfering be acute angle.
For novel electrostatic electrospinning method of the present invention, between linear pattern gap nozzle and receiving system, can be provided with auxiliary electrode.
Compared with prior art, the present invention has significant advantage.The present invention adopts the linear pattern gap nozzle to carry out the static electrospinning, static electrospinning efficient improves greatly, and overcome the problem that the nozzle that is in core when adopting multilayer circular hole nozzle or needle nozzle is difficult to occur jet, broken through prior art and improved the bottleneck difficult problem that electrospinning efficient is difficult to overcome.Particularly, the present invention adopts the linear pattern gap nozzle to carry out membranoid substance or coating that the static electrospinning can spin continuous homogeneous.
Four, description of drawings
Fig. 1 is the static electric spinning equipment schematic diagram that adopts the linear pattern gap nozzle
Fig. 2 is the linear pattern slit schematic diagram () of linear pattern gap nozzle
Fig. 3 is the linear pattern slit schematic diagram (two) of linear pattern gap nozzle
Fig. 4 is the linear pattern slit schematic diagram (three) of linear pattern gap nozzle
Fig. 5 is the linear pattern slit schematic diagram (four) of linear pattern gap nozzle
Fig. 6 is the schematic diagram that a plurality of linear pattern gap nozzles are arranged with parallel arrangement mode on the electrospinning shower nozzle
Fig. 7 is a plurality of linear pattern gap nozzles schematic diagrames () of arranging of mode radially on the electrospinning shower nozzle
Fig. 8 is a plurality of linear pattern gap nozzles schematic diagrames (two) of arranging of mode radially on the electrospinning shower nozzle
Fig. 9 is the schematic diagram that (metal) thin slice surrounds the linear pattern gap nozzle
Figure 10 is the schematic diagram of acute angle chamfering around the linear pattern gap nozzle place
Five, the specific embodiment
Novel electrostatic electrospinning method of the present invention, comprise high voltage source, liquid feed device, electrospinning shower nozzle and receiving system, liquid feed device is supplied with electrospinning liquid to the electrospinning shower nozzle, the nozzle of electrospinning shower nozzle is the linear pattern gap nozzle, linear pattern slit width 〉=0.1 of linear pattern gap nozzle millimeter, length 〉=4 millimeter and length-width ratio 〉=10, the linear pattern gap nozzle is communicated with the high-field electrode of high voltage source, the earth electrode of high voltage source is connected with receiving system, form high voltage electric field between linear pattern gap nozzle and receiving system, electrospinning liquid carries out the static electrospinning by the linear pattern gap nozzle.
Accompanying drawing 1 is a kind of layout schematic diagram of the present invention's static electric spinning equipment of adopting the linear pattern gap nozzle.1 is high voltage source in the accompanying drawing 1, and 2 is the electrospinning shower nozzle, and 3 is liquid feed device, and 4 is receiving system.Certainly, to adopt the static electric spinning equipment of linear pattern gap nozzle can be other suitable arrangement modes in the present invention.
We call nozzle at the outlet of the time ejection electrospinning liquid the static electrospinning.The outlet of ejection electrospinning liquid was the nozzle of linear pattern slit when the linear pattern gap nozzle was meant the static electrospinning.Linear pattern slit of the present invention is meant on the length direction that two limits are straight line and the slit that is parallel to each other, it can be complete regular rectangular slot (as shown in Figure 2), also can be that four jiaos in rectangle is the class rectangular slot (as shown in Figure 3) of circular arc, perhaps two ends are the linear pattern slit (as shown in Figure 4) that circular arc connects, and can also be that two ends are the linear pattern slit that taper connection (as shown in Figure 5) or two ends connect for other shapes certainly.
In accompanying drawing 2, accompanying drawing 3, accompanying drawing 4 and accompanying drawing 5, a is the linear pattern slit length of linear pattern gap nozzle, and b is the linear pattern slit width of linear pattern gap nozzle.For novel electrostatic electrospinning method of the present invention, the linear pattern slit width b of linear pattern gap nozzle can not be less than 0.1 millimeter, otherwise be difficult to carry out smoothly electrospinning, the linear pattern slit length a of linear pattern gap nozzle is not less than 4 millimeters and a/b 〉=10 simultaneously, otherwise improving static electrospinning efficient improves not obvious, the electrospinning effect is undesirable, can not realize the object of the invention.When the linear pattern slit be two ends be circular arc or taper or other shapes connect the linear pattern slit time, two limits are that straight line and the partial-length that is parallel to each other are not less than 2/3 of whole slit length on the length direction, and the c/a as shown in accompanying drawing 3, accompanying drawing 4 and accompanying drawing 5 should 〉=2/3.
For novel electrostatic electrospinning method of the present invention, on 1 electrospinning shower nozzle 1 linear pattern gap nozzle can only be arranged, but the linear pattern gap nozzle of (promptly more than 2 or 2) more than 1 is preferably arranged.
For the situation that the linear pattern gap nozzle more than 2 or 2 is arranged on 1 electrospinning shower nozzle, although the arrangement of all linear pattern gap nozzles on the electrospinning shower nozzle can have various arrangements, but, preferable arrangement is that all linear pattern gap nozzles are the mode that is arranged in parallel fully and arrange, as shown in Figure 6.The plate electrospinning shower nozzle of in the accompanying drawing 61 representative, 2 representatives are arranged in the linear pattern gap nozzle on the plate electrospinning shower nozzle, and accompanying drawing 6 has illustrated 6 linear pattern gap nozzles to be the situation that parallel arrangement mode is arranged fully on the electrospinning shower nozzle.
For the situation that the linear pattern gap nozzle more than 3 or 3 is arranged on 1 electrospinning shower nozzle, the arrangement of all linear pattern gap nozzles on the electrospinning shower nozzle preferably, all linear pattern gap nozzles radially mode arrange or all linear pattern gap nozzles radially mode arrange and converge connection at radiation center.Accompanying drawing 7 has been illustrated the mode that all linear pattern gap nozzles are arranged radially.The plate electrospinning shower nozzle of in the accompanying drawing 71 representative, 2 representatives are arranged in the linear pattern gap nozzle on the plate electrospinning shower nozzle, and accompanying drawing 7 has been illustrated 8 linear pattern gap nozzles mode situation of arranging radially on the electrospinning shower nozzle.Accompanying drawing 8 illustrated all (8) linear pattern gap nozzles on the electrospinning shower nozzle radially mode arrange and converge a kind of situation of connection at radiation center, certainly converge connection at radiation center in other mode.The plate electrospinning shower nozzle of in the accompanying drawing 81 representative, 2 representatives are arranged in the linear pattern gap nozzle on the plate electrospinning shower nozzle.
For novel electrostatic electrospinning method of the present invention, the linear pattern slit width of linear pattern gap nozzle is too little and too mostly be unfavorable for the static electrospinning, and in order to carry out electrospinning well, the linear pattern slit width is 0.2～2 millimeter scope preferably.
For novel electrostatic electrospinning method of the present invention, the linear pattern slit length of linear pattern gap nozzle is best 〉=and 10 millimeters, the characteristics of linear pattern slit and effect just can show like this.
For novel electrostatic electrospinning method of the present invention, the linear pattern gap nozzle can surround with (metal) thin slice, and at this moment (metal) thin slice surrounds the base that body and fixing (metal) thin slice surround body and can be collectively referred to as the electrospinning shower nozzle.Be beneficial to electrospinning for the charge density that makes linear pattern gap nozzle place is higher, around the linear pattern gap nozzle place that surrounds with sheet metal walled thickness with≤0.3 millimeter for good, Bao Yuehao more, as shown in Figure 9.In the accompanying drawing 9 a be shown in the linear pattern slit length of linear pattern gap nozzle, b be shown in the linear pattern slit width of linear pattern gap nozzle, d is a walled thickness around the linear pattern gap nozzle, the arrow direction is (opposite with the electrospinning flow direction, electrospinning liquid flows to linear pattern gap nozzle and last ejection linear pattern gap nozzle to the opposite direction of arrow indication) be electrospinning shower nozzle base direction, m and n are respectively length and the width toward the slit conduit in base direction somewhere, m can equal a also can be not equal to a, and n can equal b also can be not equal to b.Perhaps higher and be beneficial to electrospinning for the charge density that makes linear pattern gap nozzle place, chamfering (plane ABCD as shown in Figure 10 and the angle between the ABMN of plane) is preferably less than the acute angles of 90 degree (at this moment thickness d is the equal of zero around the linear pattern gap nozzle around the linear pattern gap nozzle, as shown in Figure 10), the angle of chamfering is the smaller the better all around.
For novel electrostatic electrospinning method of the present invention, can on plate shape base plate, offer the linear pattern slit, this moment, the linear pattern slit on the base plate plate face of electrospinning receiving system was the linear pattern gap nozzle (because electrospinning liquid is from this linear pattern slit ejection, therefore be called nozzle), offer the plate shape base plate and the linear pattern gap nozzle of linear pattern gap nozzle and form the electrospinning shower nozzle jointly.In order to make linear pattern gap nozzle place charge density higher and be beneficial to electrospinning, linear pattern gap nozzle best protruding plate shape base plate this moment (as can be), and chamfering acute angle preferably around the linear pattern gap nozzle with the form protruding plate shape base plate shown in accompanying drawing 9 and the accompanying drawing 10.
For novel electrostatic electrospinning method of the present invention,, can between linear pattern gap nozzle and receiving system, auxiliary electrode be set in order to control static electrospinning process and effect.
Embodiment: adopt linear pattern gap nozzle as shown in Figure 10, its linear pattern slit length is that 15 millimeters, width are 0.5 millimeter, the polystyrene toluene solution (polystyrene: the mass ratio of dioctyl phthalate is 19: 1) that employing contains dioctyl phthalate is an electrospinning liquid, spinning voltage is 40,000 volts, distance is 15 centimetres between linear pattern gap nozzle and the metal dash receiver, obtains about 3～5 microns plasticising styroflex of average diameter by the electrospinning spinning.
In addition, we adopt the linear pattern slit length is that 20 millimeters, width are 0.8 millimeter linear pattern gap nozzle, adopts multiple polymers solution to carry out the micron order film that electrospinning all can obtain the continuous homogeneous of phase emergencing copolymer.
Claims (10)
1. novel static electrospinning method, comprise high voltage source, liquid feed device, electrospinning shower nozzle and receiving system, liquid feed device is supplied with electrospinning liquid to the electrospinning shower nozzle, it is characterized in that: the nozzle of electrospinning shower nozzle is the linear pattern gap nozzle, the slit width of linear pattern gap nozzle 〉=0.1 millimeter, length 〉=4 millimeter and length-width ratio 〉=10, the linear pattern gap nozzle is communicated with the high-field electrode of high voltage source, the earth electrode of high voltage source is connected with receiving system, form high voltage electric field between linear pattern gap nozzle and receiving system, electrospinning liquid carries out the static electrospinning by the linear pattern gap nozzle.
2. according to the described novel electrostatic electrospinning of claim 1 method, it is characterized in that: the linear pattern gap nozzle more than 1 or 1 is arranged on 1 electrospinning shower nozzle.
3. according to the described novel electrostatic electrospinning of claim 2 method, it is characterized in that: the linear pattern gap nozzle more than 2 or 2 is arranged on 1 electrospinning shower nozzle, and all linear pattern gap nozzles are the mode that is arranged in parallel and arrange.
4. according to the described novel electrostatic electrospinning of claim 2 method, it is characterized in that: the linear pattern gap nozzle more than 3 or 3 is arranged on 1 electrospinning shower nozzle, and all linear pattern gap nozzles mode are radially arranged.
5. according to the described novel electrostatic electrospinning of claim 4 method, it is characterized in that: the linear pattern gap nozzle more than 3 or 3 is arranged on 1 electrospinning shower nozzle, and all linear pattern gap nozzles mode are radially arranged and are converged connection at radiation center.
6. according to each described novel electrostatic electrospinning method of claim 1～5, it is characterized in that: the linear pattern slit width of linear pattern gap nozzle is 0.2～2 millimeter.
7. according to each described novel electrostatic electrospinning method of claim 1～6, it is characterized in that: linear pattern slit length 〉=10 of linear pattern gap nozzle millimeter.
8. according to each described novel electrostatic electrospinning method of claim 1～7, it is characterized in that: walled thickness≤0.3 millimeter around the linear pattern gap nozzle.
9. according to each described novel electrostatic electrospinning method of claim 1～8, it is characterized in that: chamfering is an acute angle around the linear pattern gap nozzle.
10. according to each described novel electrostatic electrospinning method of claim 1～9, it is characterized in that: between linear pattern gap nozzle and receiving system, be provided with auxiliary electrode.
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| CN2012100197951A CN103215658A (en) | 2012-01-21 | 2012-01-21 | Novel static electrospinning method |
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| CN2012100197951A CN103215658A (en) | 2012-01-21 | 2012-01-21 | Novel static electrospinning method |
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Citations (7)
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|---|---|---|---|---|
| US20030228350A1 (en) * | 2001-05-16 | 2003-12-11 | The Research Foundation At State University Of New York | Biodegradable and/or bioabsorbable fibrous articles and methods for using the articles for medical applications |
| WO2006131081A1 (en) * | 2005-06-07 | 2006-12-14 | Elmarco, S.R.O. | A method and device for production of nanofibres from the polymeric solution through electrostatic spinning |
| CN201358360Y (en) * | 2009-02-19 | 2009-12-09 | 浙江大学 | Multi-nozzle spherical surface film-formation electrostatic spinning film-making device of hollow circular-ring pipelines |
| CN101880916A (en) * | 2010-06-04 | 2010-11-10 | 殷雪琰 | Method for mass production and preparation of nano-fiber |
| CN102071484A (en) * | 2011-02-22 | 2011-05-25 | 张靓 | High-voltage electrostatic shuttle nano spinning device |
| CN201924106U (en) * | 2010-11-22 | 2011-08-10 | 北京化工大学 | Device adopting electrostatic spinning for continuous preparation of non-woven fabric products |
| CN102268747A (en) * | 2011-08-01 | 2011-12-07 | 王策 | High-voltage electrostatic electron shuttle nano-spinning device |
-
2012
- 2012-01-21 CN CN2012100197951A patent/CN103215658A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030228350A1 (en) * | 2001-05-16 | 2003-12-11 | The Research Foundation At State University Of New York | Biodegradable and/or bioabsorbable fibrous articles and methods for using the articles for medical applications |
| WO2006131081A1 (en) * | 2005-06-07 | 2006-12-14 | Elmarco, S.R.O. | A method and device for production of nanofibres from the polymeric solution through electrostatic spinning |
| CN201358360Y (en) * | 2009-02-19 | 2009-12-09 | 浙江大学 | Multi-nozzle spherical surface film-formation electrostatic spinning film-making device of hollow circular-ring pipelines |
| CN101880916A (en) * | 2010-06-04 | 2010-11-10 | 殷雪琰 | Method for mass production and preparation of nano-fiber |
| CN201924106U (en) * | 2010-11-22 | 2011-08-10 | 北京化工大学 | Device adopting electrostatic spinning for continuous preparation of non-woven fabric products |
| CN102071484A (en) * | 2011-02-22 | 2011-05-25 | 张靓 | High-voltage electrostatic shuttle nano spinning device |
| CN102268747A (en) * | 2011-08-01 | 2011-12-07 | 王策 | High-voltage electrostatic electron shuttle nano-spinning device |
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Application publication date: 20130724 |