JP2015081391A - Electrospinning device - Google Patents
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Abstract
Description
本発明は、電界紡糸を行うための電界紡糸装置に関する。 The present invention relates to an electrospinning apparatus for performing electrospinning.
近年、新素材に関する研究開発が盛んに行われており、その中でもナノサイズのファイバー（繊維）が注目されている。このナノサイズファイバーは主にナノサイズ効果、超比表面積効果、超分子配列効果を有しており、このような効果を利用して、例えば、エアフィルター、再生医療用の素材、二次電池の電極又は衣料品などに応用されている。 In recent years, research and development on new materials has been actively conducted, and nano-sized fibers (fibers) have attracted attention among them. This nano-sized fiber mainly has a nano-size effect, an ultra-specific surface area effect, and a supramolecular arrangement effect. For example, an air filter, a material for regenerative medicine, a secondary battery It is applied to electrodes or clothing.
このようなナノサイズのファイバー（繊維）を紡糸する方法して電界紡糸法（エレクトロスピニング法）が従来から知られている。電界紡糸法は、電界場が形成された雰囲気中に、高分子材料を含有する電界紡糸用溶液を供給することによりナノサイズのファイバーを形成する方法であり、主に針状ノズル方式と非ノズル方式との２種類の方法が一般的に知られている。針状ノズル方式は、シリンジに封入した電界紡糸用溶液を金属製の針状ノズルの先端から電界場が形成された雰囲気中に吐出する方法として知られている。また、非ノズル方式の電界紡糸法（エレクトロスピニング法）としては、主にドラム型エレクトロスピニング法やエレクトロバブルスピニング法が知られている。このうち、ドラム型エレクトロスピニング法は、回転するドラム型の電極を電界紡糸用溶液に部分的に浸漬させることにより電界紡糸を行う方法として知られており（例えば、エルマルコ社製ナノスパイダー：特許文献１参照）、また、エレクトロバブルスピニング法は、電界紡糸用溶液に連続的に発生した泡に高電圧を印加することにより電界紡糸を行なう方法として知られている（例えば、廣瀬製紙社製エレクトロスピニング法：特許文献２参照）。このように、種々の電界紡糸法が従来から知られている。 An electrospinning method (electrospinning method) is conventionally known as a method for spinning such nano-sized fibers (fibers). The electrospinning method is a method of forming nano-sized fibers by supplying a solution for electrospinning containing a polymer material into an atmosphere in which an electric field is formed. Two types of methods are generally known. The needle nozzle method is known as a method of discharging an electrospinning solution sealed in a syringe into an atmosphere in which an electric field is formed from the tip of a metal needle nozzle. As the non-nozzle type electrospinning method (electrospinning method), a drum-type electrospinning method and an electrobubble spinning method are mainly known. Among them, the drum-type electrospinning method is known as a method of performing electrospinning by partially immersing a rotating drum-type electrode in an electrospinning solution (for example, Nanospider manufactured by El Marco Co .: Patent Documents). 1), and the electrobubble spinning method is known as a method of performing electrospinning by applying a high voltage to bubbles continuously generated in a solution for electrospinning (for example, electrospinning manufactured by Hirose Paper Co., Ltd.). Law: see Patent Document 2). As described above, various electrospinning methods are conventionally known.
しかしながら、上記のような電界紡糸法において、針状ノズル方式では、大量に紡糸をする場合に多くの針状ノズルが必要になり、その結果、針状ノズルのメンテナンスに多くの費用及び時間を要するという問題がある。また、針状ノズルが細いので、目詰まりが生じやすいという問題もある。そのため、針状ノズル方式はファイバーの量産に適していないという問題がある。 However, in the electrospinning method as described above, in the needle-shaped nozzle method, many needle-shaped nozzles are required when spinning in a large amount, and as a result, much cost and time are required for maintenance of the needle-shaped nozzle. There is a problem. In addition, since the needle-like nozzle is thin, there is a problem that clogging is likely to occur. Therefore, there is a problem that the needle nozzle method is not suitable for mass production of fibers.
本発明は、上記問題を解決するためになされたものであって、ナノサイズのファイバーを好適に紡糸することができる電界紡糸装置の提供を目的とする。 The present invention has been made to solve the above problems, and an object of the present invention is to provide an electrospinning apparatus capable of suitably spinning nano-sized fibers.
本発明の上記目的は、導電性を有する複数の突起状の電極部材と、コレクターと、前記電極部材と前記コレクターとの間に電圧を印加する電源と、前記電極部材の先端表面に直接的又は間接的に電界紡糸用溶液を供給する供給手段と、を備える電界紡糸装置により達成される。 The object of the present invention is to provide a plurality of projecting electrode members having conductivity, a collector, a power source for applying a voltage between the electrode members and the collector, directly on the tip surface of the electrode member or It is achieved by an electrospinning apparatus comprising a supply means for indirectly supplying a solution for electrospinning.
上記構成によれば、突起状の電極部材の先端表面に電界紡糸用溶液を供給することにより電界紡糸できるので、各電極部材の目詰まりを起こすことなく、ナノサイズのファイバーを好適に紡糸することができる。また、各電極部材のメンテナンスも容易である。 According to the above configuration, since the electrospinning can be performed by supplying the electrospinning solution to the tip surface of the protruding electrode member, the nano-sized fiber can be suitably spun without causing clogging of each electrode member. Can do. In addition, maintenance of each electrode member is easy.
上記構成の電界紡糸装置において、前記複数の電極部材は、板状であり、板状の本体部を有し、前記複数の電極部材が前記本体部に対して櫛歯状、鋸歯状又は歯車状に設けられていることが好ましい。 In the electrospinning apparatus configured as described above, the plurality of electrode members are plate-shaped and have a plate-shaped main body, and the plurality of electrode members are comb-shaped, saw-toothed, or gear-shaped with respect to the main body. Is preferably provided.
また、前記本体部は、水平または傾斜して配置され、前記供給手段は、前記本体部上に電界紡糸用溶液を供給することが好ましい。 Moreover, it is preferable that the said main-body part is arrange | positioned horizontally or inclined, and the said supply means supplies the solution for electrospinning on the said main-body part.
また、前記複数の電極部材は、各電極部が幅中央位置が谷部となるように折り曲げられていることが好ましい。 In addition, it is preferable that the plurality of electrode members be bent so that each electrode portion has a trough portion at the width center position.
また、前記本体部は、垂直に配置され、前記供給手段は、前記複数の電極部材の先端上に電界紡糸用溶液を供給することが好ましい。 Moreover, it is preferable that the said main-body part is arrange | positioned perpendicularly, and the said supply means supplies the solution for electrospinning on the front-end | tip of these electrode members.
また、前記複数の電極部材は、頂面に開口を有し、内部に前記供給手段からの電界紡糸用溶液を貯留可能であり、前記開口から溢れる電界紡糸用溶液を流下させる周面を有する容器状の本体部の前記周面の下端部に設けられていることが好ましい。 In addition, the plurality of electrode members have an opening on the top surface, can store the electrospinning solution from the supply means inside, and have a peripheral surface for flowing down the electrospinning solution overflowing from the opening It is preferable that it is provided in the lower end part of the said surrounding surface of a main body part.
また、前記複数の電極部材は、錐状の本体部の底辺に沿って、先端が下方を向いて突き出るように設けられており、前記供給手段は、前記本体部上に電界紡糸用溶液を供給することが好ましい。 The plurality of electrode members are provided so that the tip protrudes downward along the bottom side of the cone-shaped main body, and the supply means supplies the electrospinning solution onto the main body. It is preferable to do.
また、前記複数の電極部材は、先端が下方を向いて突き出るようにして放射状に配置されており、前記供給手段は、放射状に広がる前記複数の電極部材の頂点上に電界紡糸用溶液を供給することが好ましい。 The plurality of electrode members are radially arranged such that the tips protrude downward, and the supply means supplies the electrospinning solution onto the vertices of the plurality of electrode members spreading radially. It is preferable.
また、前記複数の電極部材は、内部に前記供給手段からの電界紡糸用溶液を流通可能な筒状の本体部の周面の下端部に設けられており、前記本体部の周面には、内部の電界紡糸用溶液を前記複数の電極部材に供給する貫通孔が複数設けられていることが好ましい。 Further, the plurality of electrode members are provided at a lower end portion of a peripheral surface of a cylindrical main body portion through which an electrospinning solution from the supply means can be circulated, and on the peripheral surface of the main body portion, It is preferable that a plurality of through holes for supplying an internal electrospinning solution to the plurality of electrode members are provided.
また、前記複数の電極部材は、回転可能なロール状の本体部の表面に、先端が上方を向いて突き出るようにして設けられており、前記本体部が回転することで前記複数の電極部材が周回し、前記供給手段は、内部に電界紡糸用溶液を貯留する貯留槽からなり、周回する前記複数の電極部材が電界紡糸用溶液に浸漬可能なように前記本体部の下方に配置されていることが好ましい。 Further, the plurality of electrode members are provided on the surface of a rotatable roll-shaped main body portion so that the front ends protrude upward, and the plurality of electrode members are formed by rotating the main body portion. The supply means comprises a storage tank for storing the electrospinning solution therein, and is arranged below the main body so that the plurality of electrode members that circulate can be immersed in the electrospinning solution. It is preferable.
また、前記本体部の表面には凹状の窪みが複数設けられており、前記複数の窪み内に前記複数の電極部材が設けられていることが好ましい。 Moreover, it is preferable that a plurality of concave depressions are provided on the surface of the main body, and the plurality of electrode members are provided in the plurality of depressions.
また、前記複数の電極部材は、無端状の帯状体からなる本体部の表面に、先端が上方を向いて突き出るようにして設けられており、前記本体部が回転することで前記複数の電極部材が周回し、前記供給手段は、内部に電界紡糸用溶液を貯留する貯留槽からなり、周回する前記複数の電極部材が電界紡糸用溶液に浸漬可能なように前記本体部の下方に配置されていることが好ましい。 Further, the plurality of electrode members are provided on the surface of the main body portion formed of an endless belt-like body so that the front ends protrude upward, and the plurality of electrode members are rotated by rotating the main body portion. And the supply means comprises a storage tank for storing the electrospinning solution therein, and is disposed below the main body so that the plurality of electrode members that circulate can be immersed in the electrospinning solution. Preferably it is.
また、前記本体部は絶縁性を有し、前記本体部内には、前記コレクターと対向する領域に、前記電源と接続される導電性を有する端子部材が設けられ、前記電極部材は前記コレクターと対向する際に前記端子部材と接するように前記本体部に設けられていることが好ましい。 In addition, the main body portion is insulative, and in the main body portion, a conductive terminal member connected to the power source is provided in a region facing the collector, and the electrode member faces the collector. It is preferable that the main body is provided so as to be in contact with the terminal member.
本発明の電界紡糸装置によれば、ナノサイズのファイバーを、各電極部材の目詰まりを起こすことなく、好適に紡糸することができる。また、各電極部材のメンテナンスも容易である。 According to the electrospinning apparatus of the present invention, nano-sized fibers can be suitably spun without causing clogging of each electrode member. In addition, maintenance of each electrode member is easy.
以下、本発明の実施形態について添付図面を参照して説明する。図１は、本発明の一実施形態に係る電界紡糸装置１の概略構成を示している。電界紡糸装置１は、電界紡糸法（エレクトロスピニング法）によりナノサイズのファイバーを紡糸するものであり、導電性を有する複数の突起状の電極部材２と、コレクター３と、電極部材２及びコレクター３の間に電圧を印加する電源４と、電極部材２の先端表面に直接的又は間接的に電界紡糸用溶液を供給する供給手段５と、を備えている。 Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a schematic configuration of an electrospinning apparatus 1 according to an embodiment of the present invention. The electrospinning apparatus 1 is for spinning nano-sized fibers by an electrospinning method (electrospinning method), and has a plurality of conductive electrode members 2, a collector 3, an electrode member 2, and a collector 3. And a supply means 5 for supplying a solution for electrospinning directly or indirectly to the tip surface of the electrode member 2.
電界紡糸法とは、電界場が形成された雰囲気中に電界紡糸用溶液を供給することによりナノサイズのファイバーを形成する方法であり、電界紡糸用溶液としては、高分子材料を溶媒に溶かしたものを用いることができる。また、高分子材料としては、特に限定されるものではないが、例えば、ポリビニルアルコール、ポリビニルピロリドンなどの水溶性の高分子材料、アクリル、ポリカーボネート、シクロオレフィンポリマー、ポリアクリロニトリルなどの有機溶剤に可溶な高分子材料、或いは、ポリ乳酸、キチンなどの生分解性の高分子材料などを用いることができる。また、溶媒としては、特に限定されるものではないが、例えば、水、エタノール、メタノール、アセトン、Ｎ，Ｎ−ジメチルホルムアミド、トルエン、キシレンなどを用いることができる。また、銀、シリカ、チタニアなどのナノ粒子を電界紡糸用溶液に添加してもよい。また、紡糸されたファイバーの太さは、約２０ｎｍ〜１０００ｎｍ程度となる。 The electrospinning method is a method of forming nano-sized fibers by supplying an electrospinning solution in an atmosphere in which an electric field is formed. As the electrospinning solution, a polymer material is dissolved in a solvent. Things can be used. The polymer material is not particularly limited, but is soluble in, for example, water-soluble polymer materials such as polyvinyl alcohol and polyvinyl pyrrolidone, and organic solvents such as acrylic, polycarbonate, cycloolefin polymer, and polyacrylonitrile. Or a biodegradable polymer material such as polylactic acid or chitin can be used. Further, the solvent is not particularly limited, and for example, water, ethanol, methanol, acetone, N, N-dimethylformamide, toluene, xylene and the like can be used. Further, nanoparticles such as silver, silica, and titania may be added to the electrospinning solution. Further, the thickness of the spun fiber is about 20 nm to 1000 nm.
複数の突起状の電極部材２は、導電性を有する材料からなり、材料としては特に限定されるものではないが、例えば、ステンレス、鉄などの金属を例示することができる。各電極部材２は、本実施形態では、板状であり、電極部材２と同材料からなり導電性を有する平板矩形状の本体部２０の一方の側縁に所定の間隔をあけて並列配置されている。各電極部材２の外形は、図２に示すように、先端が尖った三角形状であり、複数の電極部材２が本体部２０に対して鋸歯状に設けられている。なお、各電極部材２の外形は、必ずしも先端が尖っている必要はなく、先端に向けて幅が小さくなる先細り形状であればよく、図示は省略するが、台形状などであってもよい。また、各電極部材２の外形は、図３のように、矩形状とすることもでき、この場合には複数の電極部材２が本体部２０に対して櫛歯状に設けられている。各電極部材２が、図２のような先の尖った三角形状ではない場合には、各電極部材２の先端の幅（例えば図３では幅Ｗ）は、３ｍｍ以下であることが好ましい。詳細は後述するが、電極部材２の先端表面に供給された電界紡糸用溶液は、電極部材２とコレクター３との間に形成された電界場の作用により、先端から落下しながら細いファイバーとなってコレクター３に向けて飛散するが、この際に、電極部材２の先端の幅（例えば図３の幅Ｗ）が３ｍｍよりも大きいと、先端から落下する電界紡糸用溶液の液滴の大きさが大きくなり、しかも、液滴が細く引き延ばされた状態とならない結果、電極部材２とコレクター３との間に電圧を印加しても電界紡糸用溶液の液滴が電界紡糸されにくくなるからである。 The plurality of protruding electrode members 2 are made of a conductive material, and the material is not particularly limited, and examples thereof include metals such as stainless steel and iron. In the present embodiment, each electrode member 2 has a plate shape, and is arranged in parallel at a predetermined interval on one side edge of a plate rectangular main body portion 20 made of the same material as the electrode member 2 and having conductivity. ing. As shown in FIG. 2, the outer shape of each electrode member 2 has a triangular shape with a sharp tip, and a plurality of electrode members 2 are provided in a sawtooth shape with respect to the main body portion 20. Note that the outer shape of each electrode member 2 does not necessarily have a sharp tip, and may be a tapered shape with a width that decreases toward the tip. Moreover, the external shape of each electrode member 2 can also be made into a rectangular shape as shown in FIG. 3. In this case, a plurality of electrode members 2 are provided in a comb shape with respect to the main body portion 20. When each electrode member 2 is not a pointed triangular shape as shown in FIG. 2, the width (for example, width W in FIG. 3) of each electrode member 2 is preferably 3 mm or less. As will be described in detail later, the electrospinning solution supplied to the tip surface of the electrode member 2 becomes a thin fiber while falling from the tip due to the action of the electric field formed between the electrode member 2 and the collector 3. In this case, when the width of the tip of the electrode member 2 (for example, the width W in FIG. 3) is larger than 3 mm, the size of the droplet of the electrospinning solution falling from the tip is large. As a result, the droplets do not become thinly stretched. As a result, even when a voltage is applied between the electrode member 2 and the collector 3, the droplets of the electrospinning solution are not easily electrospun. It is.
電極部材２の長さＬは、特に限定されるものではないが、この実施形態では１ｍｍ〜５０ｍｍが好ましい。また、隣り合う電極部材２の間隔Ｄ（図２及び図３に示す）は、３ｍｍ〜２０ｍｍが好ましい。間隔Ｄが３ｍｍよりも小さいと、隣接する一方の電極部材２の先端表面に供給された電界紡糸用溶液と、他方の電極部材２の先端表面に供給された電界紡糸用溶液とが一体化し、その結果、電界紡糸用溶液の液滴が大きることで、上述した通り、電極部材２とコレクター３との間に電圧を印加しても電界紡糸用溶液の液滴が電界紡糸されにくくなるからである。 The length L of the electrode member 2 is not particularly limited, but is preferably 1 mm to 50 mm in this embodiment. Further, the distance D (shown in FIGS. 2 and 3) between the adjacent electrode members 2 is preferably 3 mm to 20 mm. When the distance D is smaller than 3 mm, the electrospinning solution supplied to the tip surface of one adjacent electrode member 2 and the electrospinning solution supplied to the tip surface of the other electrode member 2 are integrated, As a result, since the droplets of the electrospinning solution are large, as described above, even when a voltage is applied between the electrode member 2 and the collector 3, the droplets of the electrospinning solution are not easily electrospun. It is.
上記構成の複数の電極部材２及び本体部２０（以下、「装置本体２１」という。）は、水平または傾斜して配置され、複数の電極部材２の先端と対向するように、コレクター３が配置されている。コレクター３は、板状の金属から構成されており、一方の板面が複数の電極部材２と対向することで、電界紡糸法により生じたファイバーが前記板面に捕集される。 The plurality of electrode members 2 and the main body portion 20 (hereinafter referred to as “device main body 21”) having the above-described configuration are disposed horizontally or inclined, and the collector 3 is disposed so as to face the tips of the plurality of electrode members 2. Has been. The collector 3 is comprised from the plate-shaped metal, and the fiber produced by the electrospinning method is collected on the said plate surface because one plate surface opposes the several electrode member 2. FIG.
電源４は、直流電源であり、コレクター３及び装置本体２１に接続され、コレクター３と複数の電極部材２との間に電圧を印加して電界場を形成する。コレクター３と複数の電極部材２との電位差は特に限定されるものではないが、例えば１ｋＶ〜１００ｋＶにすることができ、装置本体２１側を高電位にし、コレクター３側を低電位にしている。なお、高電位、低電位を逆に接続してもよい。また、図１では、電源４が装置本体２１の本体部２０と接続されているが、各電極部材２と接続されるように構成してもよい。この場合には、本体部２０は、非導電性（絶縁性）の材料、例えば、合成樹脂、ガラス、あるいはこれらの複合材料などで形成することができる。 The power source 4 is a DC power source, is connected to the collector 3 and the apparatus main body 21, and forms an electric field by applying a voltage between the collector 3 and the plurality of electrode members 2. The potential difference between the collector 3 and the plurality of electrode members 2 is not particularly limited. For example, the potential difference can be set to 1 kV to 100 kV, the apparatus main body 21 side is set to a high potential, and the collector 3 side is set to a low potential. Note that the high potential and the low potential may be connected in reverse. In FIG. 1, the power supply 4 is connected to the main body 20 of the apparatus main body 21, but may be configured to be connected to each electrode member 2. In this case, the main body 20 can be formed of a non-conductive (insulating) material, such as synthetic resin, glass, or a composite material thereof.
供給手段５は、電界紡糸用溶液を供給できるものであれば特に限定されず、例えば、電界紡糸用溶液を貯留するタンク５０から導入ライン５１を介してシリンジ５２の先端から電界紡糸用溶液を装置本体２１に供給することができる。本実施形態では、供給手段５からの電界紡糸用溶液が本体部２０上に供給されるようになっており、本体部２０上に供給された電界紡糸用溶液は、本体部２０から各電極部材２上に移動し、電極部材２上を伝って電極部材２の先端表面まで到達する。なお、本体部２０上に供給された電界紡糸用溶液のうち、各電極部材２の間から流れ落ちた電界紡糸用溶液は、回収容器（図示せず）により回収される。回収容器に回収された電解紡糸用溶液は、回収ライン（図示せず）を通じてタンク５０に送られる。 The supply means 5 is not particularly limited as long as it can supply the electrospinning solution. For example, the electrospinning solution is supplied from the tank 50 storing the electrospinning solution through the introduction line 51 from the tip of the syringe 52. The main body 21 can be supplied. In the present embodiment, the electrospinning solution from the supply means 5 is supplied onto the main body 20, and the electrospinning solution supplied onto the main body 20 is transferred from the main body 20 to each electrode member. 2, travels on the electrode member 2, and reaches the tip surface of the electrode member 2. Of the electrospinning solution supplied onto the main body 20, the electrospinning solution that has flowed down from between the electrode members 2 is collected by a collection container (not shown). The electrospinning solution collected in the collection container is sent to the tank 50 through a collection line (not shown).
装置本体２１が水平または傾斜して配置される図１の例では、図４及び図５に示すように、複数の電極部材２は、各電極部材が幅中央位置が谷部２２となるようにＶ字状に折り曲げられていてもよい。このように、各電極部材２が谷折りされて谷部２２を備えることで、本体部２０から各電極部材２上に移動した電界紡糸用溶液が電極部材２上を伝う際に、電極部材２上から流れ落ちることが防止され、電界紡糸用溶液を無駄なく先端表面まで伝達させることができる。また、本体部２０についても、各電極部材２の谷部２２と対応する位置に谷部２３が設けられるように、凸凹状に折り曲げることができる。これにより、本体部２０上に供給された電界紡糸用溶液は各谷部２３に供給されて、各谷部２３から各電極部材２の谷部２２を流れるので、本体部２０から複数の電極部材２上に電界紡糸用溶液を率先して供給できる。よって、供給手段５から供給される電界紡糸用溶液のうち、電界紡糸に供されずロスとなる電界紡糸用溶液の量を少なくすることができる。 In the example of FIG. 1 in which the apparatus main body 21 is arranged horizontally or inclined, as shown in FIGS. 4 and 5, the plurality of electrode members 2 are arranged so that each electrode member has a trough portion 22 at the center of the width. It may be bent in a V shape. Thus, when each electrode member 2 is valley-folded and includes the valley portion 22, when the electrospinning solution moved from the main body portion 20 onto each electrode member 2 travels on the electrode member 2, the electrode member 2. It is prevented from flowing down from above, and the electrospinning solution can be transmitted to the tip surface without waste. Further, the main body 20 can also be bent into an uneven shape so that a valley 23 is provided at a position corresponding to the valley 22 of each electrode member 2. Thereby, the electrospinning solution supplied on the main body 20 is supplied to each trough 23 and flows from each trough 23 to the trough 22 of each electrode member 2, so that the plurality of electrode members from the main body 20. The electrospinning solution can be proactively supplied onto 2. Therefore, among the electrospinning solution supplied from the supply means 5, the amount of the electrospinning solution that is not subjected to electrospinning and is lost can be reduced.
なお、複数の電極部材２及び本体部２０（装置本体２１）が、図６に示すように、水平面に対して垂直にして配置されるように構成してもよい。この図６の例では、供給手段５は、複数の電極部材２の先端上に電界紡糸用溶液を供給するように配置される。この図６の例では、供給手段５からの電界紡糸用溶液は、まず、上下方向に並べられた最上段の電極部材２の先端表面に供給され、この最上段の電極部材２の先端表面から落下する電界紡糸用溶液が一つ下段の電極部材２の先端表面に供給される。このように、供給手段５からの電界紡糸用溶液は、下段の電極部材２に順次供給され、最下段の電極部材２の先端表面から落下する電界紡糸用溶液が回収容器により回収されるため、供給手段５から供給される電界紡糸用溶液のうち、電界紡糸に供されずロスとなる電界紡糸用溶液の量を少なくすることができる。 In addition, you may comprise so that the several electrode member 2 and the main-body part 20 (apparatus main body 21) may be arrange | positioned perpendicularly | vertically with respect to a horizontal surface, as shown in FIG. In the example of FIG. 6, the supply means 5 is arranged so as to supply the electrospinning solution onto the tips of the plurality of electrode members 2. In the example of FIG. 6, the electrospinning solution from the supply means 5 is first supplied to the tip surface of the uppermost electrode member 2 arranged in the vertical direction, and from the tip surface of the uppermost electrode member 2. The dropping electrospinning solution is supplied to the tip surface of the electrode member 2 in the lower stage. Thus, the electrospinning solution from the supply means 5 is sequentially supplied to the lower electrode member 2, and the electrospinning solution falling from the tip surface of the lowermost electrode member 2 is recovered by the recovery container. Of the electrospinning solution supplied from the supply means 5, the amount of electrospinning solution that is not subjected to electrospinning and is lost can be reduced.
次に、上記構成の電界紡糸装置１により行う電界紡糸法について説明する。電界紡糸法により紡糸するときは、まず、電源４をオンにすることにより、複数の電極部材２とコレクター３との間に電圧を印加して電界場を形成する。次に、供給手段５から電解紡糸用溶液を、図１の例では本体部２０上に、図６の例では最上段の電極部材２の先端上に、それぞれ供給する。これにより、各電極部材２の先端表面に電界紡糸用溶液が供給され、各電極部材２の先端表面から電界紡糸用溶液の微小な液滴が落下する際に、電極部材２とコレクター３との間に形成された電界場の作用により、多数の細いファイバーとなってコレクター３に向けて飛散する。飛散したファイバーがコレクター３の板面に付着することで、電界紡糸法により多数の細いファイバーが生じ、コレクター３に捕集される。 Next, an electrospinning method performed by the electrospinning apparatus 1 having the above configuration will be described. When spinning by the electrospinning method, first, the power supply 4 is turned on to apply a voltage between the plurality of electrode members 2 and the collector 3 to form an electric field. Next, the electrospinning solution is supplied from the supply means 5 onto the main body 20 in the example of FIG. 1 and onto the tip of the uppermost electrode member 2 in the example of FIG. As a result, the electrospinning solution is supplied to the tip surface of each electrode member 2, and when a minute droplet of the electrospinning solution falls from the tip surface of each electrode member 2, the electrode member 2 and the collector 3 Due to the action of the electric field formed therebetween, a large number of thin fibers are scattered toward the collector 3. As the scattered fibers adhere to the plate surface of the collector 3, a large number of thin fibers are generated by the electrospinning method and collected by the collector 3.
上記構成の電界紡糸装置１によれば、複数の突起状の電極部材２の先端表面に電界紡糸用溶液を供給することにより、ナノサイズのファイバーを連続的に紡糸することができる。よって、各電極部材２が目詰まりなどを起こすことなく、好適にナノサイズのファイバーを製造することができる。また、複数の突起状の電極部材２が鋸歯状又は櫛歯状であり、その先端が細くなっているため、各電極部材２の先端表面から落下する電界紡糸用溶液の液滴の大きさを小さく、かつ、細く引き延ばすことができる。これにより、電極部材２とコレクター３との間に電圧を印加したときに、ナノサイズのファイバーを生じさせやすくすることができるので、効率よくファイバーを紡糸することができる。したがって、ファイバーを量産することができる。また、複数の突起状の電極部材２が板状であるため、洗浄などの各電極部材２のメンテナンスも容易である。 According to the electrospinning apparatus 1 configured as described above, nanosized fibers can be continuously spun by supplying an electrospinning solution to the tip surfaces of the plurality of protruding electrode members 2. Therefore, it is possible to suitably manufacture nano-sized fibers without causing each electrode member 2 to be clogged. In addition, since the plurality of protruding electrode members 2 have a sawtooth shape or a comb shape, and the tips thereof are thin, the size of the droplets of the electrospinning solution falling from the tip surface of each electrode member 2 is reduced. It is small and can be stretched thinly. Thereby, when a voltage is applied between the electrode member 2 and the collector 3, it can be made easy to produce a nanosized fiber, Therefore A fiber can be spun efficiently. Therefore, the fiber can be mass-produced. In addition, since the plurality of protruding electrode members 2 are plate-shaped, maintenance of each electrode member 2 such as cleaning is easy.
以上、本発明の一実施形態について説明したが、本発明の具体的な態様は、上記実施形態に限定されるものではない。例えば、上記実施形態では、複数の電極部材２の形状は板状であるが、必ずしも板状である必要はなく、細長い棒状や先端が尖ったピン状などであっても、同様の効果を奏する。 As mentioned above, although one Embodiment of this invention was described, the specific aspect of this invention is not limited to the said embodiment. For example, in the above-described embodiment, the shape of the plurality of electrode members 2 is a plate shape. However, the electrode member 2 is not necessarily a plate shape, and the same effect can be obtained even if it is an elongated rod shape or a pin shape with a sharp tip. .
また、上記実施形態では、複数の電極部材２が平板矩形状の本体部２０の一つの側縁に間隔をあけて並列配置されているが、図７に示すように、板状の本体部２０の周縁に複数の電極部材２を所定の間隔をあけて配置するように構成してもよい。各電極部材２は、図７では、先端が尖った三角形状であり、複数の電極部材２が本体部２０に対して歯車状に設けられているが、必ずしも先端が尖っている必要はなく、台形状などの先端に向けて幅が小さくなる先細り形状のほか、矩形状とすることもできる。 Moreover, in the said embodiment, although the several electrode member 2 is arranged in parallel at one side edge of the flat rectangular main body part 20 at intervals, as shown in FIG. You may comprise so that the several electrode member 2 may be arrange | positioned at predetermined intervals in the periphery of this. In FIG. 7, each electrode member 2 has a triangular shape with a sharp tip, and a plurality of electrode members 2 are provided in a gear shape with respect to the main body 20, but the tip does not necessarily have a sharp point, In addition to a tapered shape whose width decreases toward the tip, such as a trapezoidal shape, a rectangular shape can also be used.
この図７の実施形態では、複数の電極部材２及び本体部２０（装置本体２１）を水平にして配置し、複数の電極部材２の先端と対向するように、装置本体２１の周囲に筒状のコレクター３を配置する。そして、供給手段５から本体部２０上に電界紡糸用溶液を供給するとともに、本体部２０を図示しない回転駆動手段により回転させる。これにより、本体部２０上に供給された電界紡糸用溶液は、本体部２０から各電極部材２上、さらには、各電極部材２の先端表面まで遠心力により供給され、各電極部材２の先端から微小な液滴として落下する際に多数の細いファイバーとなってコレクター３に向けて飛散し、コレクター３に捕集される。この図７の実施形態においても、各電極部材２の目詰まりなどを起こすことなく、好適にナノサイズのファイバーを量産することができるうえ、各電極部材２のメンテナンスも容易である。 In the embodiment of FIG. 7, the plurality of electrode members 2 and the main body portion 20 (device main body 21) are arranged horizontally, and are cylindrical around the device main body 21 so as to face the tips of the plurality of electrode members 2. The collector 3 is arranged. Then, the electrospinning solution is supplied from the supply means 5 onto the main body portion 20, and the main body portion 20 is rotated by a rotation driving means (not shown). Thereby, the electrospinning solution supplied onto the main body 20 is supplied by centrifugal force from the main body 20 onto each electrode member 2 and further to the tip surface of each electrode member 2. When the liquid drops as a small liquid droplet, it becomes a large number of thin fibers, scatters toward the collector 3 and is collected by the collector 3. In the embodiment of FIG. 7 as well, nano-sized fibers can be suitably mass-produced without causing clogging of each electrode member 2, and maintenance of each electrode member 2 is easy.
なお、図７の実施形態においても、図８に示すように、本体部２０の中心部と各電極部材２の先端とを結ぶ線Ｌ１において、本体部２０及び各電極部材２を谷折りし、本体部２０の中心部と隣り合う電極部材２の境界とを結ぶ線Ｌ２において、本体部２０及び各電極部材２を山折りすることで、本体部２０及び各電極部材２に谷部２３，２２が設けられるように構成してもよい。このように、本体部２０及び各電極部材２が谷部２３，２２を備えることで、上記実施形態と同様に、供給手段５から供給される電界紡糸用溶液のうち、電界紡糸に供されずロスとなる電界紡糸用溶液の量を少なくすることができる。 Also in the embodiment of FIG. 7, as shown in FIG. 8, the main body 20 and each electrode member 2 are valley-folded at a line L1 connecting the center of the main body 20 and the tip of each electrode member 2, The main body 20 and each electrode member 2 are folded in a line L2 connecting the center of the main body 20 and the boundary of the adjacent electrode member 2, so that valleys 23 and 22 are formed in the main body 20 and each electrode member 2. May be provided. As described above, the main body 20 and each electrode member 2 are provided with the valley portions 23 and 22, so that the electrospinning solution of the electrospinning solution supplied from the supply unit 5 is not subjected to electrospinning as in the above embodiment. The amount of electrospinning solution that causes loss can be reduced.
また、図９に示すように、本体部２０を錐状に形成し、複数の電極部材２を、錐状の本体部２の底辺に沿って一周に亘り設けるようにして、装置本体２１を構成してもよい。この場合、複数の電極部材２は、その先端が斜め下方に向けて本体部２０の底辺から突き出るようにして設けるのが好ましい。なお、各電極部材２は、図９では、板状でありかつ先端が尖った三角形状であるが、台形状などの先端に向けて幅が小さくなる先細り形状のほか、矩形状でもよい。また、複数の電極部材２は、必ずしも板状である必要はなく、細長い棒状や先端が尖ったピン状などであってもよい。本体部２０は、電極部材２と同材料からなり導電性を有していてもよいし、非導電性（絶縁性）の材料で形成されていてもよい。 Further, as shown in FIG. 9, the main body 20 is formed in a conical shape, and a plurality of electrode members 2 are provided along the bottom of the conical main body 2 to constitute the apparatus main body 21. May be. In this case, it is preferable that the plurality of electrode members 2 be provided such that the tips thereof protrude obliquely downward from the bottom side of the main body 20. In FIG. 9, each electrode member 2 has a plate shape and a triangular shape with a sharp tip, but may have a rectangular shape in addition to a tapered shape whose width decreases toward the tip, such as a trapezoidal shape. Further, the plurality of electrode members 2 do not necessarily have a plate shape, and may be a long rod shape or a pin shape with a sharp tip. The main body portion 20 may be made of the same material as the electrode member 2 and may be conductive, or may be formed of a non-conductive (insulating) material.
コレクター３は、複数の電極部材２の先端と対向するように、装置本体２１の下方に配置されているが、装置本体２１の直下にはコレクター３が存在せず、装置本体２１の直下から外側に外れた位置に配置するのが好ましい。図９では、リング状のコレクター３を装置本体２１の下方に配置しており、リング状のコレクター３の中央部の空洞上に、装置本体２１が位置している。なお、筒状のコレクターを、装置本体２１の周囲を囲むようにして配置してもよい。 The collector 3 is disposed below the apparatus main body 21 so as to face the tips of the plurality of electrode members 2. However, the collector 3 does not exist immediately below the apparatus main body 21, and the collector 3 does not exist immediately below the apparatus main body 21. It is preferable to arrange at a position deviating from the above. In FIG. 9, the ring-shaped collector 3 is disposed below the apparatus main body 21, and the apparatus main body 21 is located in the central cavity of the ring-shaped collector 3. A cylindrical collector may be disposed so as to surround the periphery of the apparatus main body 21.
この図９の実施形態では、供給手段５から本体部２０上に電界紡糸用溶液を供給することにより、電界紡糸用溶液が本体部２０の周面、さらには、各電極部材２を流れ落ちることで、各電極部材２の先端表面まで供給される。その結果、電界紡糸用溶液が各電極部材２の先端から微小な液滴として落下する際に多数の細いファイバーとなってコレクター３に向けて飛散し、コレクター３に捕集される。この図９の実施形態においても、各電極部材２が目詰まりなどを起こすことなく、好適にナノサイズのファイバーを量産することができるうえ、各電極部材２のメンテナンスも容易である。また、装置本体２１を回転させる必要はないうえ、装置本体２１の直下位置にコレクター３が配置されないようにすることで、電界紡糸用溶液がコレクター３上に落下することを防止できる。なお、本体部２０は、図９では、円錐状に形成されているが、角錐状などであってもよい。 In the embodiment of FIG. 9, by supplying the electrospinning solution from the supply means 5 onto the main body 20, the electrospinning solution flows down the peripheral surface of the main body 20, and further on each electrode member 2. , And supplied to the tip surface of each electrode member 2. As a result, when the electrospinning solution falls as fine droplets from the tip of each electrode member 2, it becomes a large number of thin fibers, scatters toward the collector 3, and is collected by the collector 3. Also in the embodiment of FIG. 9, each electrode member 2 can be suitably mass-produced without causing clogging or the like, and maintenance of each electrode member 2 is easy. Further, it is not necessary to rotate the apparatus main body 21, and it is possible to prevent the electrospinning solution from falling on the collector 3 by preventing the collector 3 from being disposed immediately below the apparatus main body 21. In addition, although the main-body part 20 is formed in the cone shape in FIG. 9, a pyramid shape etc. may be sufficient.
また、図１０に示すように、本体部２０を容器状に形成し、本体部２０内に供給手段５（図示は省略）から供給される電界紡糸用溶液を貯留させるように構成してもよい。本体部２０は、電極部材２と同材料からなり導電性を有していてもよいし、非導電性（絶縁性）の材料で形成されていてもよい。この図１０の実施形態では、本体部２０は、水平方向に延びるように形成されており、周面２０Ａ及び側面２０Ｂを有しているとともに頂面に開口２０Ｃを有している。周面２０Ａは、開口２０Ｃの両側縁からそれぞれ斜め下方に向かって延びるＶ字状をなしており、開口２０Ｃから溢れた電界紡糸用溶液が周面２０Ａに沿って斜め下方へ流下するように構成されている。複数の電極部材２が、容器状の本体部２の周面２０Ａの下端部に垂下するようにして、前記水平方向に沿って設けられることで、装置本体２１が構成されている。なお、各電極部材２は、図１０では、板状でありかつ先端が尖った三角形状であるが、台形状などの先端に向けて幅が小さくなる先細り形状のほか、矩形状でもよい。また、複数の電極部材２は、必ずしも板状である必要はなく、細長い棒状や先端が尖ったピン状などであってもよい。コレクター３は、複数の電極部材２の側方に、各電極部材２の先端が一方の板面と対向するようにして配置されている。 Further, as shown in FIG. 10, the main body 20 may be formed in a container shape, and the electrospinning solution supplied from the supply means 5 (not shown) may be stored in the main body 20. . The main body portion 20 may be made of the same material as the electrode member 2 and may be conductive, or may be formed of a non-conductive (insulating) material. In the embodiment of FIG. 10, the main body 20 is formed to extend in the horizontal direction, and has a peripheral surface 20A and a side surface 20B and an opening 20C on the top surface. The peripheral surface 20A has a V shape extending obliquely downward from both side edges of the opening 20C, and is configured such that the electrospinning solution overflowing from the opening 20C flows downward obliquely along the peripheral surface 20A. Has been. A plurality of electrode members 2 are provided along the horizontal direction so as to hang down from the lower end portion of the peripheral surface 20A of the container-like main body portion 2, whereby the device main body 21 is configured. In FIG. 10, each electrode member 2 has a plate shape and a triangular shape with a sharp tip, but may have a rectangular shape in addition to a tapered shape whose width decreases toward the tip, such as a trapezoidal shape. Further, the plurality of electrode members 2 do not necessarily have a plate shape, and may be a long rod shape or a pin shape with a sharp tip. The collector 3 is arranged on the side of the plurality of electrode members 2 such that the tip of each electrode member 2 faces one plate surface.
この図１０の実施形態では、供給手段５から本体部２０内に供給された電界紡糸用溶液が開口２０Ｃから溢れ、周面２０Ａに沿って斜め下方に流れ落ちた後、各電極部材２に沿って流れ落ちることで、各電極部材２の先端表面に供給される。その結果、電界紡糸用溶液が各電極部材２の先端から微小な液滴として落下する際に多数の細いファイバーとなってコレクター３に向けて飛散し、コレクター３に捕集される。この図１０の実施形態においても、各電極部材２が目詰まりなどを起こすことなく、好適にナノサイズのファイバーを量産することができるうえ、各電極部材２のメンテナンスも容易である。なお、本体部２０の周面２０Ａが造る断面形状は、必ずしもＶ字状である必要はなく、半円形状や半楕円形状などであってもよい。 In the embodiment of FIG. 10, the electrospinning solution supplied from the supply means 5 into the main body 20 overflows from the opening 20 </ b> C and flows down obliquely along the peripheral surface 20 </ b> A, and then along each electrode member 2. By flowing down, it is supplied to the tip surface of each electrode member 2. As a result, when the electrospinning solution falls as fine droplets from the tip of each electrode member 2, it becomes a large number of thin fibers, scatters toward the collector 3, and is collected by the collector 3. Also in the embodiment of FIG. 10, each electrode member 2 can be suitably mass-produced without causing clogging or the like, and maintenance of each electrode member 2 is easy. The cross-sectional shape formed by the peripheral surface 20A of the main body 20 is not necessarily V-shaped, and may be a semicircular shape or a semi-elliptical shape.
また、図１１に示すように、本体部２０を筒状に形成し、本体部２０内に供給手段５から供給される電界紡糸用溶液を流通させるように構成してもよい。本体部２０は、電極部材２と同材料からなり導電性を有していてもよいし、非導電性（絶縁性）の材料で形成されていてもよい。この図１１の実施形態では、複数の電極部材２が、本体部２の周面の下端部に垂下するようにして、本体部２０の長さ方向に沿って設けられることで、装置本体２１が構成されている。なお、各電極部材２は、図１１では、板状でありかつ先端が尖った三角形状であるが、台形状などの先端に向けて幅が小さくなる先細り形状のほか、矩形状でもよい。また、複数の電極部材２は、必ずしも板状である必要はなく、細長い棒状や先端が尖ったピン状などであってもよい。また、本体部２０の周面には、内部の電界紡糸用溶液を複数の電極部材２に供給する貫通孔２０Ｄが複数設けられている。コレクター３は、複数の電極部材２の側方に、各電極部材２の先端が一方の板面と対向するようにして配置されている。 Further, as shown in FIG. 11, the main body 20 may be formed in a cylindrical shape, and the electrospinning solution supplied from the supply means 5 may be circulated in the main body 20. The main body portion 20 may be made of the same material as the electrode member 2 and may be conductive, or may be formed of a non-conductive (insulating) material. In the embodiment of FIG. 11, the plurality of electrode members 2 are provided along the length direction of the main body portion 20 so as to hang from the lower end portion of the peripheral surface of the main body portion 2. It is configured. Each electrode member 2 has a plate shape and a triangular shape with a sharp tip in FIG. 11, but may have a rectangular shape in addition to a tapered shape whose width decreases toward the tip, such as a trapezoidal shape. Further, the plurality of electrode members 2 do not necessarily have a plate shape, and may be a long rod shape or a pin shape with a sharp tip. In addition, a plurality of through holes 20 </ b> D that supply the internal electrospinning solution to the plurality of electrode members 2 are provided on the peripheral surface of the main body 20. The collector 3 is arranged on the side of the plurality of electrode members 2 such that the tip of each electrode member 2 faces one plate surface.
この図１１の実施形態では、供給手段５から本体部２０内に供給された電界紡糸用溶液が貫通孔２０Ｄから流出し、本体部２０の周面、さらに、各電極部材２に沿って流れ落ちることで、各電極部材２の先端表面に供給される。その結果、電界紡糸用溶液が各電極部材２の先端から微小な液滴として落下する際に多数の細いファイバーとなってコレクター３に向けて飛散し、コレクター３に捕集される。この図１１の実施形態においても、各電極部材２が目詰まりなどを起こすことなく、好適にナノサイズのファイバーを量産することができるうえ、各電極部材２のメンテナンスも容易である。なお、本体部２０の形状は、必ずしも円筒状である必要はなく、角筒状であってもよい。 In the embodiment of FIG. 11, the electrospinning solution supplied from the supply means 5 into the main body portion 20 flows out of the through-hole 20 </ b> D, and flows down along the peripheral surface of the main body portion 20 and the electrode members 2. Then, it is supplied to the tip surface of each electrode member 2. As a result, when the electrospinning solution falls as fine droplets from the tip of each electrode member 2, it becomes a large number of thin fibers, scatters toward the collector 3, and is collected by the collector 3. Also in the embodiment of FIG. 11, each electrode member 2 can be suitably mass-produced without causing clogging or the like, and maintenance of each electrode member 2 is easy. In addition, the shape of the main-body part 20 does not necessarily need to be a cylindrical shape, and may be a rectangular tube shape.
また、図１２に示すように、複数の電極部材２を、先端が斜め下方に向けて突き出るようにして放射状に配置することで、装置本体２１を構成してもよい。この場合、各電極部材２は、板状のほか、細長い棒状や先端が尖ったピン状などであってもよい。また、板状の場合には、先端が尖った三角形状、台形状などの先端に向けて幅が小さくなる先細り形状のほか、矩形状でもよい。また、コレクター３は、複数の電極部材２の先端と対向するように、図９の実施形態と同様に、装置本体２１の直下位置から外側に外れた位置に配置するのが好ましい。なお、筒状のコレクターを、装置本体２１を囲むようにして配置してもよい。 Moreover, as shown in FIG. 12, the apparatus main body 21 may be comprised by arrange | positioning the some electrode member 2 radially so that the front-end | tip protrudes diagonally downward. In this case, each electrode member 2 may have a plate shape, a long rod shape, or a pin shape with a sharp tip. Further, in the case of a plate shape, a rectangular shape may be used in addition to a tapered shape having a sharp tip, a tapered shape having a width that decreases toward the tip, and the like. Further, the collector 3 is preferably disposed at a position outside the apparatus main body 21 so as to face the front ends of the plurality of electrode members 2, as in the embodiment of FIG. 9. A cylindrical collector may be arranged so as to surround the apparatus main body 21.
この図１２の実施形態では、放射状に広がる複数の電極部材２の頂点Ｔ上に供給手段５から電界紡糸用溶液を供給することにより、電界紡糸用溶液が斜め下方に向けて突き出る各電極部材２に沿って流れ落ちることで、各電極部材２の先端表面に供給される。その結果、電界紡糸用溶液が各電極部材２の先端から微小な液滴として落下する際に多数の細いファイバーとなってコレクター３に向けて飛散し、コレクター３に捕集される。この図１２の実施形態においても、各電極部材２の目詰まりなどを起こすことなく、好適にナノサイズのファイバーを量産することができるうえ、各電極部材２のメンテナンスも容易である。また、装置本体２１の直下位置にコレクター３が配置されないようにすることで、装置本体２１に供給された電界紡糸用溶液がコレクター３上に落下することを防止できる。 In the embodiment of FIG. 12, by supplying the electrospinning solution from the supply means 5 onto the vertices T of the plurality of electrode members 2 spreading radially, the electrode spinning solution protrudes obliquely downward. Is supplied to the tip surface of each electrode member 2. As a result, when the electrospinning solution falls as fine droplets from the tip of each electrode member 2, it becomes a large number of thin fibers, scatters toward the collector 3, and is collected by the collector 3. Also in the embodiment of FIG. 12, nano-sized fibers can be suitably mass-produced without causing clogging of each electrode member 2, and maintenance of each electrode member 2 is easy. In addition, by preventing the collector 3 from being disposed immediately below the apparatus main body 21, it is possible to prevent the electrospinning solution supplied to the apparatus main body 21 from falling on the collector 3.
また、図１３に示すように、本体部２０をロール状に形成し、ロール状の本体部２０の表面に、複数の電極部材２を先端が上方を向くようにして、本体部２０の長さ方向に沿って設けることで装置本体２１を構成してもよい。本体部２０は、電極部材２と同材料からなって導電性を有し、図示しない回転駆動手段により回転可能となっている。本体部２０の下方には、内部に電界紡糸用溶液を貯留する貯留槽５５が設けられている。この貯留槽５５は、供給手段５を構成し、本体部２０が回転することにより周回する複数の電極部材２が電界紡糸用溶液に浸漬可能なように、その高さ位置が設定されている。なお、各電極部材２は、図１３では、板状でありかつ先端が尖った三角形状であるが、台形状などの先端に向けて幅が小さくなる先細り形状のほか、矩形状でもよい。また、複数の電極部材２は、必ずしも板状である必要はなく、細長い棒状や先端が尖ったピン状などであってもよい。コレクター３は、例えば本体部２０の上方に配置され、各電極部材２が周回する際にコレクター３と対向する。 Further, as shown in FIG. 13, the main body portion 20 is formed in a roll shape, and the length of the main body portion 20 is such that a plurality of electrode members 2 are directed upward on the surface of the roll-shaped main body portion 20. The apparatus main body 21 may be configured by being provided along the direction. The main body portion 20 is made of the same material as the electrode member 2 and has conductivity, and can be rotated by a rotation driving means (not shown). A storage tank 55 that stores an electrospinning solution is provided below the main body 20. The storage tank 55 constitutes the supply means 5, and the height position thereof is set so that the plurality of electrode members 2 that circulate when the main body 20 rotates can be immersed in the electrospinning solution. Each electrode member 2 has a plate shape and a triangular shape with a sharp tip in FIG. 13, but may have a rectangular shape in addition to a tapered shape whose width decreases toward the tip, such as a trapezoidal shape. Further, the plurality of electrode members 2 do not necessarily have a plate shape, and may be a long rod shape or a pin shape with a sharp tip. The collector 3 is disposed, for example, above the main body portion 20 and faces the collector 3 when each electrode member 2 goes around.
この図１３の実施形態では、複数の電極部材２と本体部２０とで、電界紡糸用溶液に対する濡れ性が異なるように表面処理が施されている。つまりは、電極部材２の表面は、電界紡糸用溶液が濡れやすい（つまりは、付着しやすい）ような表面処理がなされており、本体部２０の表面は、電界紡糸用溶液が濡れにくい（つまりは、はじきやすくて付着しにくい）ような表面処理がなされている。このような電極部材２及び本体部２０の表面に親水性と疎水性とを付与して、電界紡糸用溶液に対する濡れ性を異なるようにするための表面処理には、種々の方法を用いることができるが、例えば、電極部材２の表面に酸化チタンなどの親水性材料をコーティングすることで、親水性化することができる一方で、本体部２０の表面にフッ素やシリコン、ダイヤモンドライクカーボンなどの疎水性（撥水性）材料をコーティングすることで、疎水性化することができる。また、電極部材２及び本体部２０の表面にメッキ処理を施すことによっても、電極部材２及び本体部２０の表面に親水性と疎水性との差をつけることができる。また、電極部材２及び本体部２０の表面に研磨処理やサンドブラスト処理などを施し、表面を滑らかにしたり、微細な凹凸形状として粗くしたりすることによっても、電極部材２及び本体部２０の表面に親水性と疎水性との差をつけることができる。本体部２０の表面の表面粗さを小さくすることで疎水性が向上し、電極部材２の表面の表面粗さを大きくすることで、電極部材２の表面と液との接触面積が大きくなるので、親水性が向上する。これにより、本体部２０の回転により複数の電極部材２が周回し、貯留槽５５内の電界紡糸用溶液に浸漬した際、本体部２０と各電極部材２との間で液が切れ、電界紡糸用溶液が濡れやすい部分である各電極部材２の先端表面に効果的に付着する。そして、更なる本体部２０の回転により複数の電極部材２が周回して、コレクター３と対向することで、各電極部材２の先端表面に付着した電界紡糸用溶液の微小な液滴が多数の細いファイバーとなってコレクター３に向けて飛散し、コレクター３に捕集される。この図１２の実施形態においても、各電極部材２の目詰まりなどを起こすことなく、好適にナノサイズのファイバーを量産することができるうえ、各電極部材２のメンテナンスも容易である。また、本体部２０は、電界紡糸用溶液に対して濡れにくくなっているので、複数の電極部材２以外の領域で紡糸されるのを防ぐことができる。 In the embodiment of FIG. 13, the surface treatment is performed so that the plurality of electrode members 2 and the main body portion 20 have different wettability with respect to the electrospinning solution. That is, the surface of the electrode member 2 is subjected to a surface treatment so that the electrospinning solution is easily wetted (that is, easily attached), and the surface of the main body portion 20 is not easily wetted by the electrospinning solution (that is, The surface treatment is easy to repel and is difficult to adhere. Various methods may be used for the surface treatment for imparting hydrophilicity and hydrophobicity to the surfaces of the electrode member 2 and the main body portion 20 to make the wettability with respect to the electrospinning solution different. For example, the surface of the electrode member 2 can be made hydrophilic by coating the surface of the electrode member 2 with a hydrophilic material such as titanium oxide. On the other hand, the surface of the main body 20 can be made hydrophobic such as fluorine, silicon, or diamond-like carbon. Hydrophobicity can be achieved by coating a water-repellent material. Also, the surface of the electrode member 2 and the main body 20 can be made to have a difference between hydrophilicity and hydrophobicity by plating the surfaces of the electrode member 2 and the main body 20. Further, the surface of the electrode member 2 and the main body portion 20 can also be polished or sandblasted to make the surface smooth or rough as a fine uneven shape. A difference between hydrophilicity and hydrophobicity can be made. Since the hydrophobicity is improved by reducing the surface roughness of the surface of the main body 20, and the surface roughness of the surface of the electrode member 2 is increased, the contact area between the surface of the electrode member 2 and the liquid is increased. , Hydrophilicity is improved. Thereby, when the plurality of electrode members 2 circulate by the rotation of the main body portion 20 and are immersed in the electrospinning solution in the storage tank 55, the liquid is cut between the main body portion 20 and each electrode member 2, and the electrospinning is performed. It effectively adheres to the tip surface of each electrode member 2, which is a portion where the preparation solution is easily wetted. Further, the plurality of electrode members 2 circulate by further rotation of the main body portion 20 and face the collector 3, so that a large number of minute droplets of the electrospinning solution attached to the tip surface of each electrode member 2 are obtained. It becomes a thin fiber, scatters toward the collector 3, and is collected by the collector 3. Also in the embodiment of FIG. 12, nano-sized fibers can be suitably mass-produced without causing clogging of each electrode member 2, and maintenance of each electrode member 2 is easy. Moreover, since the main-body part 20 becomes difficult to get wet with respect to the electrospinning solution, it can prevent spinning in areas other than the plurality of electrode members 2.
なお、図１３の実施形態において、ロール状の本体部２０の表面に、図１４（Ａ）及び（Ｂ）に示すように、凹状の微小な窪み２４を複数設け、各窪み２４内に電極部材２を設けるように構成してもよい。電極部材２は窪み２４の中心部に設けることが好ましい。窪み２４の深さは、電極部材２の長さとほぼ同じか小さいことが好ましい。この図１４の実施形態では、本体部２０が図示しない回転駆動手段により回転すると、複数の窪み２４及び電極部材２が周回し、貯留槽５５内の電界紡糸用溶液に浸漬する。その後、本体部２０の表面に付着した液を、例えばドクターブレードなどのゴム製のブレード部を有する掻き取り板（図示せず）で払拭して本体部２０の表面から落下させることで、複数の窪み２４内にだけに電界紡糸用溶液を供給する。そして、更なる本体部２０の回転により複数の窪み２４及び電極部材２が周回して、コレクター３と対向することで、各窪み２４内の電界紡糸用溶液が各電極部材２の先端表面から多数の細いファイバーとなってコレクター３に向けて飛散し、コレクター３に捕集される。この図１４の実施形態においても、各電極部材２の目詰まりなどを起こすことなく、好適にナノサイズのファイバーを量産することができるうえ、各電極部材２のメンテナンスも容易である。また、本体部２０の表面に付着した電界紡糸用溶液は掻き取られ、各窪み２４内に電界紡糸用溶液が貯留されるので、図１３の実施形態のように、複数の電極部材２と本体部２０とで、電界紡糸用溶液に対する濡れ性が異なるように表面処理を施す必要はなく、複数の電極部材２以外の領域で紡糸されるのを防ぐことができる。 In the embodiment of FIG. 13, a plurality of concave minute recesses 24 are provided on the surface of the roll-shaped main body 20 as shown in FIGS. 14A and 14B, and the electrode member is provided in each recess 24. 2 may be provided. The electrode member 2 is preferably provided at the center of the recess 24. The depth of the recess 24 is preferably substantially the same as or smaller than the length of the electrode member 2. In the embodiment of FIG. 14, when the main body portion 20 is rotated by a rotation driving means (not shown), the plurality of depressions 24 and the electrode member 2 circulate and are immersed in the electrospinning solution in the storage tank 55. Thereafter, the liquid adhering to the surface of the main body portion 20 is wiped off with a scraping plate (not shown) having a rubber blade portion such as a doctor blade and dropped from the surface of the main body portion 20, so that a plurality of The electrospinning solution is supplied only into the recess 24. Further, the plurality of depressions 24 and the electrode member 2 circulate by further rotation of the main body portion 20 and face the collector 3. It becomes a thin fiber of and scatters toward the collector 3 and is collected by the collector 3. In the embodiment of FIG. 14 as well, nano-sized fibers can be suitably mass-produced without causing clogging of each electrode member 2, and maintenance of each electrode member 2 is easy. Further, since the electrospinning solution attached to the surface of the main body 20 is scraped off and the electrospinning solution is stored in each recess 24, the plurality of electrode members 2 and the main body 2 and the main body are stored as in the embodiment of FIG. It is not necessary to perform surface treatment so that the wettability with respect to the electrospinning solution is different between the portions 20 and it is possible to prevent spinning in a region other than the plurality of electrode members 2.
また、図１５に示すように、本体部２０を、一対のプーリ２５，２５に掛け渡された無端状の帯状体（ベルト）で形成し、帯状の本体部２０の表面に、複数の電極部材２を先端が上方を向くようにして、本体部２０の長さ方向に沿って設けることで装置本体２１を構成してもよい。本体部２０は、電極部材２と同材料からなって導電性を有し、各プーリ２５が図示しない回転駆動手段により回転することで、回転可能となっている。本体部２０の下方には、図１３の実施形態と同様に、内部に電界紡糸用溶液を貯留する貯留槽５５が設けられており、貯留槽５５は、本体部２０が回転することにより周回する複数の電極部材２が電界紡糸用溶液に浸漬可能なように、その高さ位置が設定されている。なお、各電極部材２は、図１５では、板状でありかつ先端が尖った三角形状であるが、台形状などの先端に向けて幅が小さくなる先細り形状のほか、矩形状でもよい。また、複数の電極部材２は、必ずしも板状である必要はなく、細長い棒状や先端が尖ったピン状などであってもよい。コレクター３は、例えば本体部２０の側方に配置され、各電極部材２が周回する際にコレクター３と対向する。 Further, as shown in FIG. 15, the main body portion 20 is formed by an endless belt (belt) spanned between a pair of pulleys 25, 25, and a plurality of electrode members are formed on the surface of the belt-shaped main body 20. The apparatus main body 21 may be configured by providing 2 along the length direction of the main body portion 20 with the tip thereof facing upward. The main body 20 is made of the same material as that of the electrode member 2 and has conductivity, and can be rotated by rotating each pulley 25 by a rotation driving means (not shown). Similar to the embodiment of FIG. 13, a storage tank 55 for storing the electrospinning solution is provided inside the main body 20, and the storage tank 55 circulates as the main body 20 rotates. The height position is set so that the plurality of electrode members 2 can be immersed in the electrospinning solution. In FIG. 15, each electrode member 2 has a plate shape and a triangular shape with a sharp tip, but may have a rectangular shape in addition to a tapered shape whose width decreases toward the tip, such as a trapezoidal shape. Further, the plurality of electrode members 2 do not necessarily have a plate shape, and may be a long rod shape or a pin shape with a sharp tip. The collector 3 is arrange | positioned at the side of the main-body part 20, for example, and opposes the collector 3 when each electrode member 2 circulates.
この図１５の実施形態においても、図１３の実施形態と同様に、複数の電極部材２と本体部２０とで、電界紡糸用溶液に対する濡れ性が異なるように表面処理を施すことが好ましい。これにより、本体部２０の複数の電極部材２以外の領域で紡糸されるのを防ぐことができる。この図１５の実施形態では、本体部２０の回転により複数の電極部材２が周回し、貯留槽５５内の電界紡糸用溶液に浸漬した際、電界紡糸用溶液が各電極部材２の先端表面に微小な液滴として付着する。そして、更なる本体部２０の回転により複数の電極部材２が周回して、コレクター３と対向することで、各電極部材２の先端表面に付着した電界紡糸用溶液の微小な液滴が多数の細いファイバーとなってコレクター３に向けて飛散し、コレクター３に捕集される。この図１５の実施形態においても、各電極部材２の目詰まりなどを起こすことなく、好適にナノサイズのファイバーを量産することができるうえ、各電極部材２のメンテナンスも容易である。 In the embodiment of FIG. 15 as well, like the embodiment of FIG. 13, it is preferable that the plurality of electrode members 2 and the main body portion 20 are subjected to surface treatment so that the wettability with respect to the electrospinning solution is different. Thereby, it can prevent spinning in the area | regions other than the some electrode member 2 of the main-body part 20. FIG. In the embodiment of FIG. 15, when the plurality of electrode members 2 circulate by the rotation of the main body portion 20 and are immersed in the electrospinning solution in the storage tank 55, the electrospinning solution is applied to the tip surface of each electrode member 2. It adheres as a fine droplet. Further, the plurality of electrode members 2 circulate by further rotation of the main body portion 20 and face the collector 3, so that a large number of minute droplets of the electrospinning solution attached to the tip surface of each electrode member 2 are obtained. It becomes a thin fiber, scatters toward the collector 3, and is collected by the collector 3. Also in the embodiment of FIG. 15, nano-sized fibers can be suitably mass-produced without causing clogging of each electrode member 2, and maintenance of each electrode member 2 is easy.
なお、図１５の実施形態においては、本体部２０が導電性の材料で形成されているが、合成樹脂などの非導電性（絶縁性）の材料で形成し、その表面に、複数の導電性の電極部材２を別途設置するように構成してもよい。この場合には、図１６に示すように、複数の電極部材２は、帯状の本体部２０の厚み方向に貫通するようにして、本体部２０に設置される。また、本体部２０内には、コレクター３と対向する領域に、電源４と接続される導電性を有する材料からなる端子部材２６が複数設けられ、複数の電極部材２は、コレクター３と対向する際に各端子部材２６と接するように本体部２０に設けられている。 In the embodiment of FIG. 15, the main body portion 20 is formed of a conductive material. However, the main body portion 20 is formed of a nonconductive (insulating) material such as a synthetic resin and has a plurality of conductive surfaces on its surface. The electrode member 2 may be separately installed. In this case, as shown in FIG. 16, the plurality of electrode members 2 are installed in the main body 20 so as to penetrate in the thickness direction of the band-shaped main body 20. In the main body 20, a plurality of terminal members 26 made of a conductive material connected to the power source 4 are provided in a region facing the collector 3, and the plurality of electrode members 2 face the collector 3. The main body 20 is provided so as to be in contact with each terminal member 26.
この図１６の実施形態では、本体部２０の回転により複数の電極部材２が周回し、貯留槽５５内の電界紡糸用溶液に浸漬した際、電界紡糸用溶液が各電極部材２の先端表面に付着する。そして、更なる本体部２０の回転により複数の電極部材２が周回して、コレクター３と対向する。この際、複数の電極部材２が各端子部材２６と接することで、各電極部材２とコレクター３との間に電界場が形成され、電界場の作用により、各電極部材２の先端表面に付着した電界紡糸用溶液の微小な液滴が多数の細いファイバーとなってコレクター３に向けて飛散し、コレクター３に捕集される。この図１５の実施形態においても、各電極部材２の目詰まりなどを起こすことなく、好適にナノサイズのファイバーを量産することができるうえ、各電極部材２のメンテナンスも容易である。さらに、複数の電極部材２だけに電圧印加され、本体部２０も含めた装置本体２１全体に電圧印加されないので、エネルギー効率よく紡糸することができる。 In the embodiment of FIG. 16, when the plurality of electrode members 2 circulate by the rotation of the main body portion 20 and are immersed in the electrospinning solution in the storage tank 55, the electrospinning solution is applied to the tip surface of each electrode member 2. Adhere to. Further, the plurality of electrode members 2 circulate by the further rotation of the main body portion 20 and face the collector 3. At this time, an electric field is formed between each electrode member 2 and the collector 3 by the plurality of electrode members 2 being in contact with each terminal member 26, and adheres to the tip surface of each electrode member 2 by the action of the electric field. The fine droplets of the electrospinning solution are scattered into the collector 3 as a large number of thin fibers, and are collected by the collector 3. Also in the embodiment of FIG. 15, nano-sized fibers can be suitably mass-produced without causing clogging of each electrode member 2, and maintenance of each electrode member 2 is easy. Further, since voltage is applied only to the plurality of electrode members 2 and not applied to the entire apparatus main body 21 including the main body portion 20, spinning can be performed with energy efficiency.
以下、実施例を用いて本発明を更に説明する。ただし、本発明が本実施例に限定されるものではない。実施例として、本発明の図１の実施形態及び図６の実施形態に係る電界紡糸装置を用いて電界紡糸を行った。 The present invention will be further described below using examples. However, the present invention is not limited to this embodiment. As an example, electrospinning was performed using the electrospinning apparatus according to the embodiment of FIG. 1 and the embodiment of FIG. 6 of the present invention.
実施例１，２では、複数の板状の電極部材を板状の本体部に対して鋸歯状に設け、実施例１では、電極部材の長さＬを１０ｍｍとし、隣り合う電極部材の間隔Ｄを５ｍｍとし、実施例２では、電極部材の長さＬを１０ｍｍとし、隣り合う電極部材の間隔Ｄを１０ｍｍとした（図２を参照）。また、実施例３，４では、複数の板状の電極部材を板状の本体部に対して櫛歯状に設け、実施例３では、電極部材の突出長さＬを１０ｍｍとし、隣り合う電極部材の間隔Ｄを４ｍｍとし、実施例４では、電極部材の突出長さＬを１０ｍｍとし、隣り合う電極部材の間隔Ｄを９ｍｍとした（図３を参照）。 In the first and second embodiments, a plurality of plate-like electrode members are provided in a sawtooth shape with respect to the plate-like main body. In the first embodiment, the length L of the electrode members is 10 mm, and the distance D between adjacent electrode members is D. In Example 2, the length L of the electrode member was 10 mm, and the distance D between adjacent electrode members was 10 mm (see FIG. 2). Also, in Examples 3 and 4, a plurality of plate-like electrode members are provided in a comb-like shape with respect to the plate-like main body, and in Example 3, the protruding length L of the electrode members is 10 mm, and adjacent electrodes The distance D between the members was 4 mm, and in Example 4, the protruding length L of the electrode members was 10 mm, and the distance D between adjacent electrode members was 9 mm (see FIG. 3).
実施例１〜４のいずれについても、コレクターとして、１００μｍの厚みを有するＰＥＴフィルムの表面にアルミニウムテープを貼り付けたものを用いた。また、電界紡糸用溶液として、ポリビニルアルコール（積水化学工業社製のSelvol 350）を水に溶解して、濃度が７ｗｔ％の水溶液とし、この水溶液に、濃度が１５ｗｔ％のナノシリカ分散液（ＣＩＫナノテック社製）を加え、固形分中のシリカの濃度が１０ｗｔ％になるように調整したものを用いた。また、各電極部材からコレクターまでの距離を１５ｃｍとした。この状態で、シリンジポンプによって、５ｍｌ／ｈで電界紡糸用溶液を供給しながら、各電極部材とコレクター３との間に電圧を印加した。電圧は１５ｋＶとした。 In any of Examples 1 to 4, a collector obtained by attaching an aluminum tape to the surface of a PET film having a thickness of 100 μm was used. In addition, as a solution for electrospinning, polyvinyl alcohol (Selvol 350 manufactured by Sekisui Chemical Co., Ltd.) is dissolved in water to obtain an aqueous solution having a concentration of 7 wt%. In this aqueous solution, a nanosilica dispersion liquid (CIK Nanotech) having a concentration of 15 wt% is used. (Manufactured by Kogyo Co., Ltd.) was used and the silica was adjusted so that the concentration of silica in the solid content was 10 wt%. The distance from each electrode member to the collector was 15 cm. In this state, a voltage was applied between each electrode member and the collector 3 while supplying the electrospinning solution at 5 ml / h with a syringe pump. The voltage was 15 kV.
そして、実施例１〜４の電界紡糸装置を連続運転して、紡糸の可否を目視で観察したところ、いずれの実施例１〜４においても、目詰まりなくファイバーを連続的に紡糸できることを確認できた。また、実施例１〜４について電界紡糸を５分間連続的に行った後、ファイバーのサンプリングを５分間行い、サンプリングしたファイバーの平均径を求めた。いずれの実施例１〜４においても、ファイバー径は５００ｎｍよりも小さく、良好な細さのファイバーを製造できることを確認できた。よって、本発明の電界紡糸装置によれば、電極部材の目詰まりが生じず、好適にファイバーを連続的に紡糸できることを確認できた。 And when the electrospinning apparatus of Examples 1 to 4 was continuously operated and the possibility of spinning was visually observed, it was confirmed that in any of Examples 1 to 4, the fiber could be continuously spun without clogging. It was. Moreover, after performing electrospinning about Examples 1-4 continuously for 5 minutes, fiber sampling was performed for 5 minutes and the average diameter of the sampled fiber was calculated | required. In any of Examples 1 to 4, the fiber diameter was smaller than 500 nm, and it was confirmed that a fine fiber could be produced. Therefore, according to the electrospinning apparatus of the present invention, it has been confirmed that the electrode member is not clogged and that the fiber can be preferably continuously spun.
１ 電界紡糸装置
２ 電極部材
３ コレクター
４ 電源
５ 供給手段
２０ 本体部
２０Ａ 周面
２０Ｃ 開口
２０Ｄ 貫通孔
２２ 谷部
２６ 端子部材
５５ 貯留槽
DESCRIPTION OF SYMBOLS 1 Electrospinning apparatus 2 Electrode member 3 Collector 4 Power supply 5 Supply means 20 Main body part 20A Peripheral surface 20C Opening 20D Through-hole 22 Valley part 26 Terminal member 55 Storage tank
Claims (13)
コレクターと、
前記電極部材と前記コレクターとの間に電圧を印加する電源と、
前記電極部材の先端表面に直接的又は間接的に電界紡糸用溶液を供給する供給手段と、を備える電界紡糸装置。 A plurality of projecting electrode members having electrical conductivity;
A collector,
A power source for applying a voltage between the electrode member and the collector;
An electrospinning apparatus comprising: a supply means for supplying an electrospinning solution directly or indirectly to a tip surface of the electrode member.
板状の本体部を有し、前記複数の電極部材が前記本体部に対して櫛歯状、鋸歯状又は歯車状に設けられている請求項１に記載の電界紡糸装置。 The plurality of electrode members are plate-shaped,
2. The electrospinning apparatus according to claim 1, further comprising a plate-like main body portion, wherein the plurality of electrode members are provided in a comb-tooth shape, a saw-tooth shape, or a gear shape with respect to the main body portion.
前記供給手段は、前記本体部上に電界紡糸用溶液を供給する請求項２に記載の電界紡糸装置。 The main body is arranged horizontally,
The electrospinning apparatus according to claim 2, wherein the supply unit supplies an electrospinning solution onto the main body.
前記供給手段は、前記複数の電極部材の先端上に電界紡糸用溶液を供給する請求項２に記載の電界紡糸装置。 The main body is arranged vertically,
The electrospinning apparatus according to claim 2, wherein the supply unit supplies an electrospinning solution onto tips of the plurality of electrode members.
頂面に開口を有し、内部に前記供給手段からの電界紡糸用溶液を貯留可能であり、前記開口から溢れる電界紡糸用溶液を流下させる周面を有する容器状の本体部の前記周面の下端部に設けられている請求項１に記載の電界紡糸装置。 The plurality of electrode members are:
An opening in the top surface, the electrospinning solution from the supply means can be stored inside, and the peripheral surface of the container-like main body portion having a peripheral surface for flowing down the electrospinning solution overflowing from the opening The electrospinning apparatus according to claim 1, wherein the electrospinning apparatus is provided at a lower end portion.
前記供給手段は、前記本体部上に電界紡糸用溶液を供給する請求項１に記載の電界紡糸装置。 The plurality of electrode members are provided such that the tip protrudes downward along the bottom of the cone-shaped main body,
The electrospinning apparatus according to claim 1, wherein the supply unit supplies an electrospinning solution onto the main body.
前記供給手段は、放射状に広がる前記複数の電極部材の頂点上に電界紡糸用溶液を供給する請求項１に記載の電界紡糸装置。 The plurality of electrode members are arranged radially such that the tips protrude downward.
2. The electrospinning apparatus according to claim 1, wherein the supply unit supplies the electrospinning solution onto the vertices of the plurality of electrode members extending radially.
前記本体部の周面には、内部の電界紡糸用溶液を前記複数の電極部材に供給する貫通孔が複数設けられている請求項１に記載の電界紡糸装置。 The plurality of electrode members are provided in a lower end portion of a peripheral surface of a cylindrical main body portion in which an electrospinning solution from the supply means can be circulated.
The electrospinning apparatus according to claim 1, wherein a plurality of through holes for supplying an internal electrospinning solution to the plurality of electrode members are provided on a peripheral surface of the main body.
前記供給手段は、内部に電界紡糸用溶液を貯留する貯留槽からなり、周回する前記複数の電極部材が電界紡糸用溶液に浸漬可能なように前記本体部の下方に配置されている請求項１に記載の電界紡糸装置。 The plurality of electrode members are provided on the surface of a rotatable roll-shaped main body portion so that the front ends protrude upward, and the plurality of electrode members circulate as the main body portion rotates. ,
The said supply means consists of the storage tank which stores the solution for electrospinning inside, and is arrange | positioned under the said main-body part so that these electrode members to circulate can be immersed in the solution for electrospinning. The electrospinning apparatus according to 1.
前記供給手段は、内部に電界紡糸用溶液を貯留する貯留槽からなり、周回する前記複数の電極部材が電界紡糸用溶液に浸漬可能なように前記本体部の下方に配置されている請求項１に記載の電界紡糸装置。 The plurality of electrode members are provided on the surface of the main body portion made of an endless belt-like body so that the front ends protrude upward, and the plurality of electrode members circulate by rotating the main body portion. And
The said supply means consists of the storage tank which stores the solution for electrospinning inside, and is arrange | positioned under the said main-body part so that these electrode members to circulate can be immersed in the solution for electrospinning. The electrospinning apparatus according to 1.
前記本体部内には、前記コレクターと対向する領域に、前記電源と接続される導電性を有する端子部材が設けられ、前記電極部材は前記コレクターと対向する際に前記端子部材と接するように前記本体部に設けられている請求項１２に記載の電界紡糸装置。 The main body has an insulating property,
In the main body, a conductive terminal member connected to the power source is provided in a region facing the collector, and the electrode member is in contact with the terminal member when facing the collector. The electrospinning apparatus according to claim 12, which is provided in the section.
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| CN105937059A (en) * | 2016-06-27 | 2016-09-14 | 佛山轻子精密测控技术有限公司 | Netted rotating electrode |
| KR101950217B1 (en) * | 2018-04-27 | 2019-05-02 | 주식회사 세인 | nanofibers fabrication apparatus using electrospinning |
| US20220033994A1 (en) * | 2018-02-05 | 2022-02-03 | Fermi Research Alliance, Llc | Methods and systems for electrospinning using low power voltage converter |
| US11450860B2 (en) | 2016-06-14 | 2022-09-20 | California Institute Of Technology | Nanofibers decorated with nanoparticles and methods of their manufacture |
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