WO2008106903A2 - Device for production of nanofibres and/or nanoparticles from solutions or melts of polymers in electrostatic field - Google Patents

Device for production of nanofibres and/or nanoparticles from solutions or melts of polymers in electrostatic field Download PDF

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Publication number
WO2008106903A2
WO2008106903A2 PCT/CZ2008/000027 CZ2008000027W WO2008106903A2 WO 2008106903 A2 WO2008106903 A2 WO 2008106903A2 CZ 2008000027 W CZ2008000027 W CZ 2008000027W WO 2008106903 A2 WO2008106903 A2 WO 2008106903A2
Authority
WO
WIPO (PCT)
Prior art keywords
nanofibres
electrode
nanoparticles
collecting electrode
substrate material
Prior art date
Application number
PCT/CZ2008/000027
Other languages
English (en)
French (fr)
Other versions
WO2008106903A3 (en
Inventor
Ladislav Mares
David PETRÁS
Libor Samek
Jan Cmelík
Original Assignee
Elmarco S.R.O.
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.)
Filing date
Publication date
Application filed by Elmarco S.R.O. filed Critical Elmarco S.R.O.
Publication of WO2008106903A2 publication Critical patent/WO2008106903A2/en
Publication of WO2008106903A3 publication Critical patent/WO2008106903A3/en

Links

Classifications

    • 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
    • D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid

Definitions

  • Technical field Technical solution relates to the device for production of nanofibres and/or nanoparticles from solutions or melts of polymers in electrostatic field between at least one spinning electrode and at least one collecting electrode, through which there is guided sufficiently electrically conductive substrate material.
  • the most significant production method of polymer nanofibres and/or polymer nanoparticles is the method, at which a suitable solution or melt of polymer is brought, e.g. on surface of rotating spinning electrode, into electrostatic field, which is generated by difference of electric potentials of at least one spinning electrode and at least one collecting electrode.
  • This electrostatic field is acting on solution or melt of polymer by means of so called Coulomb forces, thanks to whose size and orientation the layer of solution or melt of polymer is deformed, while the balanced state of all participating forces results in formation of so called Taylor cones. From Taylor cones are, upon continuous action of Coulomb forces, the primary nucleuses of fibres elongated, from which are through consequent splitting and solidification of individual branches the final polymer nanofibres produced.
  • Nanofibres and/or nanoparticles being produced in electrostatic field by action of Coulomb forces move towards the collecting electrode, while it is advantageous if, still before their contact with the collecting electrode, they are caught and transported from the active space, in which the process of production of nanofibres and/or nanoparticles takes place.
  • a suitable substrate is electrically conductive material, e.g. metal foil, textile formation with sufficient electrical conductivity or textile formation whose electrical conductivity is increased e.g. in a method according to CZ PV 2005- 702.
  • the substrate material Due to the fact that the nanofibres and/or nanoparticles being produced bring with them on the substrate material electrical charge acquired through contact of solution or melt of polymer with electrically charged spinning electrode or through bringing electrical voltage itself into the solution, the substrate material is after impact of nanofibers and/or nanoparticles charged, while the rate of this charging and its time and surface stability is related to overall electrical properties of the substrate material. Charging of substrate with the same polarity as that of the spinning electrode causes weakening of electric field, which moreover becomes non-homogenous and non-static.
  • the collecting electrode according to CZ PV 2006-477 was created, which comprises conductive thin-walled body of electrode, in which there is performed at least one opening, along whose perimeter there is arranged a border, while in an inner space of electrode body there is mounted at least one electrode carrier interconnected with at least one brace mounted in the spinning chamber, while the electrode carrier is arranged behind border of an opening.
  • the advantage of such structure of the collecting electrode is that it does not contain any sharp forms, and that the places, where three differently dielectric solid environments come into contact (triple points), are hidden inside the electrode body, where an electric field shows practically zero intensity. In a final result it causes, that electrode does not produce corona.
  • the goal of technical solution is to propose device for production of polymer nanofibres and/or nanoparticles, that eliminates disadvantages of background art, and thus reliably contribute to generation of defined and stabile electrostatic field of necessary intensity.
  • Technical solution is focused first of all on elimination of electric charge brought by nanofibres and/ or nanoparticles from the substrate material, upon simultaneous usage of knowledge arising out of structure of the collecting electrode according to PV 2006-477.
  • the goal of technical solution is achieved by the device for production of nanofibres and/or nanoparticles from solutions or melts of polymers in electrostatic field between at least one spinning electrode and at least one collecting electrode, whose principle consists in that the collecting electrode is in contact with substrate material.
  • the collecting electrode extends with at least one of its dimensions along entire width of substrate material.
  • the collecting electrode comprises a conducting thin-walled body provided on its faces with openings, along whose circumference there is arranged a border, while in the inner space of the body behind the border there is mounted at least one carrier connected with at least one brace mounted in the spinning chamber.
  • the collecting electrode is performed as non- corona collecting electrode according to the patent file PV 2006-477, it is simultaneously ensured, that electrostatic field will not be disturbed by generation of coronas on surface of the collecting electrode.
  • the device according to the technical solution achieves a reliable leading away of electrical charge, which is on the substrate material brought by nanofibres and/or nanoparticles after their impact on substrate material.
  • the device for production of nanofibres and/or nanoparticles from solutions or melts of polymers in electrostatic field will be explained on an example of embodiment of the device for production of nanofibres through electrostatic spinning of polymer solution, nevertheless the principle of technical solution is not limited to this device only, and it is usable also at other constructional embodiments of the devices for production of nanofibres and/or nanoparticles from solutions or melts of polymers.
  • the principle of the technical solution may be used also at already existing devices regardless of the construction and number of spinning or collecting electrodes, at which the produced electrically charged nanofibres and/or nanoparticles are deposited on electrically conductive substrate material.
  • the conductive substrate material shall be understood such a material, whose electrical properties enable transfer of at least a part of electrical charge applied to one point of substrate on entire or a part of its surface, immediately or in a short time interval after the applying.
  • the device for production of nanofibres through electrostatic spinning of polymer solutions comprises the spinning chamber, in which there is mounted a cylindrical spinning electrode, elongated collecting electrode of a cylindric shape and reservoir of polymer solution.
  • the spinning electrode is in a known manner rotatably mounted in the reservoir of polymer solution, while by a section of its surface it extends into the polymer solution.
  • the elongated collecting electrode of cylindric shape performed e.g. according to PV 2006-477, while its longitudinal axis is parallel with longitudinal axis of spinning electrode, and both axes are laying in shared vertical plane being perpendicular to the plane of substrate fabric.
  • the longitudinal axis of elongated collecting electrode of cylindric shape is perpendicular to the direction of motion of substrate fabric.
  • the collecting electrode and the spinning electrode are in a known not represented manner connected with opposite poles of high voltage source, or one of them is grounded while the second is connected with one pole of high voltage.
  • the spinning chamber is between the spinning electrode and the collecting electrode performed a guiding of electrically conductive substrate flat fabric, at the same time the substrate flat fabric is guided tangentially to the surface of the collecting electrode and is in contact with it.
  • Contact between the collecting electrode and substrate flat fabric is realised on a contact abscisse which is parallel with longitudinal axis of collecting electrode.
  • the spinning electrode brings on its surface a layer of polymer solution into the electrostatic field between the spinning electrode and collecting electrode, in which thanks to action of force on the polymer solution on surface of the spinning electrode the Taylor cones are formed, and from them are subsequently produced the polymer nanofibres, which deposit on substrate surface fabric.
  • the collecting electrode next to co-generating of the electrostatic field, fulfils also a function of leading away the charge brought to substrate fabric by means of polymer nanofibres, which results in entire remedy of disadvantages of present background art, while the substrate fabric is not being charged in uncontrolled manner and electrostatic field is not weakened, its homogeneity not violated and electrically charged nanofibres running towards substrate fabric are not repulsed.
  • inventions may be the functions of co-generating of electrostatic field and leading away the charge from substrate textile divided between two or more collecting electrodes, while in contact with substrate fabric is only the collecting electrode, eventually the collecting electrodes, designated at least for leading away the charge.
  • all present devices for production of nanofibres and/or nanoparticles or other nanostructures in electrostatic field at which the produced nanostructures are bringing electrical charge to electrically conductive substrate material, may be added by at least one elongated collecting electrode of cylindrical shape.
  • the collecting electrode may be grounded or connected with high voltage source, whose polarity is opposite than the polarity of the spinning electrode.
  • the collecting electrode which is in contact with substrate material, is positioned on opposite side of substrate material than the spinning electrode, nevertheless in cases when the electrostatic field is not effected negatively, it is possible that the grounded collecting electrode designated for leading away of the electrical charge from substrate material is positioned on the same side of substrate material as the spinning electrode outside the active space.
  • the contact between the collecting electrode and substrate material is realised not only on a contact abscisse, but on contact surface made of a section of surface of the collecting electrode, which is partially looped by a substrate material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
PCT/CZ2008/000027 2007-03-08 2008-03-06 Device for production of nanofibres and/or nanoparticles from solutions or melts of polymers in electrostatic field WO2008106903A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ200718612U CZ17577U1 (cs) 2007-03-08 2007-03-08 Zarízení pro výrobu nanovláken a/nebo nanocástic z roztoku nebo tavenin polymeru v elektrostatickémpoli
CZPUV2007-18612 2007-03-08

Publications (2)

Publication Number Publication Date
WO2008106903A2 true WO2008106903A2 (en) 2008-09-12
WO2008106903A3 WO2008106903A3 (en) 2008-10-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2008/000027 WO2008106903A2 (en) 2007-03-08 2008-03-06 Device for production of nanofibres and/or nanoparticles from solutions or melts of polymers in electrostatic field

Country Status (3)

Country Link
CZ (1) CZ17577U1 (cs)
TW (1) TW200902779A (cs)
WO (1) WO2008106903A2 (cs)

Cited By (20)

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US8584871B2 (en) 2007-05-30 2013-11-19 Dow Global Technologies Llc High-output solvent-based electrospinning
WO2014093345A1 (en) 2012-12-10 2014-06-19 Emd Millipore Corporation Ultrporous nanofiber mats and uses thereof
US9065122B2 (en) 2010-09-30 2015-06-23 Applied Materials, Inc. Electrospinning for integrated separator for lithium-ion batteries
WO2015124250A1 (en) 2014-02-20 2015-08-27 Merck Patent Gmbh Stable catalyst ink formulations, methods of using such inks in fiber formation, and articles comprising such fibers
WO2015200239A1 (en) 2014-06-26 2015-12-30 Emd Millipore Corporation Filter structure with enhanced dirt holding capacity
WO2016167871A1 (en) 2015-04-17 2016-10-20 Emd Millipore Corporation Method of purifying a biological materia of interest in a sample using nanofiber ultrafiltration membranes operated in tangential flow filtration mode
US9547011B2 (en) 2013-03-14 2017-01-17 Tricol Biomedical, Inc. Biocompatible and bioabsorbable derivatized chitosan compositions
US9623352B2 (en) 2010-08-10 2017-04-18 Emd Millipore Corporation Method for retrovirus removal
US9750829B2 (en) 2009-03-19 2017-09-05 Emd Millipore Corporation Removal of microorganisms from fluid samples using nanofiber filtration media
WO2018064992A1 (en) * 2016-10-06 2018-04-12 Nafigate Corporation, A.S. Method for depositing a layer of polymeric nanofibers prepared by electrostatic spinning of a polymer solution or melt on electrically nonconductive materials, and a multilayer composite thus prepared containing at least one layer of polymeric nanofibers
EP3366362A1 (en) 2017-02-23 2018-08-29 Sefar AG A protective vent and method for producing a protective vent
WO2019016605A1 (en) 2017-07-21 2019-01-24 Merck Millipore Ltd MEMBRANES OF NONWOVEN FIBERS
WO2020092688A1 (en) 2018-11-01 2020-05-07 Emd Millipore Corporation Efficient production of nanofiber structures
WO2021167814A1 (en) 2020-02-18 2021-08-26 Emd Millipore Corporation Sterilizable porous filtration media containing nanofiber
US11154821B2 (en) 2011-04-01 2021-10-26 Emd Millipore Corporation Nanofiber containing composite membrane structures
EP4092184A1 (en) 2021-05-18 2022-11-23 Sefar AG Method for producing a carrier layer with a hydrophilic polymeric nanocoating
EP3880335B1 (en) 2019-10-24 2023-03-29 SAATI S.p.A. A method for preparing a composite filter medium and the composite filter medium obtained with this method
EP4177050A1 (en) 2021-11-04 2023-05-10 Sefar AG Polymeric fabric
EP4379127A1 (en) 2022-11-29 2024-06-05 Sefar AG Method of producing an object having a fluorinated polymer coating
DE102023108102A1 (de) 2023-03-30 2024-10-02 Greenerity Gmbh Brennstoffzellenkathode, verfahren zu deren herstellung und brennstoffzelle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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CN109097842B (zh) * 2018-08-15 2021-04-20 湖南工程学院 一种聚合物静电纺丝接收网帘的制备方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH570493A5 (cs) * 1973-08-16 1975-12-15 Battelle Memorial Institute
CZ20032421A3 (cs) * 2003-09-08 2004-11-10 Technická univerzita v Liberci Způsob výroby nanovláken z polymerního roztoku elektrostatickým zvlákňováním a zařízení k provádění způsobu
JP4448946B2 (ja) * 2004-05-20 2010-04-14 国立大学法人山梨大学 ビニル系導電性高分子繊維の製造方法、及びその方法により得られたビニル系導電性高分子繊維。
NL1028847C2 (nl) * 2005-04-22 2006-10-24 Univ Eindhoven Tech Werkwijze en inrichting voor het met behulp van een elektrisch veld uit een materiaal vervaardigen en sturen van een vezel, en voorwerp aldus vervaardigd.

Cited By (37)

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US8584871B2 (en) 2007-05-30 2013-11-19 Dow Global Technologies Llc High-output solvent-based electrospinning
EP3381476A1 (en) 2009-03-19 2018-10-03 EMD Millipore Corporation Removal of microorganisms from fluid samples using nanofiber filtration media
US10722602B2 (en) 2009-03-19 2020-07-28 Emd Millipore Corporation Removal of microorganisms from fluid samples using nanofiber filtration media
US9750829B2 (en) 2009-03-19 2017-09-05 Emd Millipore Corporation Removal of microorganisms from fluid samples using nanofiber filtration media
US10064965B2 (en) 2009-03-19 2018-09-04 Emd Millipore Corporation Removal of microorganisms from fluid samples using nanofiber filtration media
US9889214B2 (en) 2009-03-19 2018-02-13 Emd Millipore Corporation Removal of microorganisms from fluid samples using nanofiber filtration media
US9943616B2 (en) 2009-03-19 2018-04-17 Emd Millipore Corporation Removal of microorganisms from fluid samples using nanofiber filtration media
US10252199B2 (en) * 2010-08-10 2019-04-09 Emd Millipore Corporation Method for retrovirus removal
US9623352B2 (en) 2010-08-10 2017-04-18 Emd Millipore Corporation Method for retrovirus removal
US9065122B2 (en) 2010-09-30 2015-06-23 Applied Materials, Inc. Electrospinning for integrated separator for lithium-ion batteries
US9871240B2 (en) 2010-09-30 2018-01-16 Applied Materials, Inc. Electrospinning for integrated separator for lithium-ion batteries
US11154821B2 (en) 2011-04-01 2021-10-26 Emd Millipore Corporation Nanofiber containing composite membrane structures
WO2014093345A1 (en) 2012-12-10 2014-06-19 Emd Millipore Corporation Ultrporous nanofiber mats and uses thereof
US11229724B2 (en) 2013-03-14 2022-01-25 Tricol Biomedical, Inc. Biocompatible and bioabsorbable derivatized chitosan compositions
US9925310B2 (en) 2013-03-14 2018-03-27 Tricol Biomedical, Inc. Biocompatible and bioabsorbable derivatized chitosan compositions
US10709817B2 (en) 2013-03-14 2020-07-14 Tricol Biomedical, Inc. Biocompatible and bioabsorbable derivatized chitosan compositions
US9846163B2 (en) 2013-03-14 2017-12-19 Tricol Biomedical, Inc. Biocompatible and bioabsorbable derivatized chitosan compositions
US9547011B2 (en) 2013-03-14 2017-01-17 Tricol Biomedical, Inc. Biocompatible and bioabsorbable derivatized chitosan compositions
US11261542B2 (en) 2014-02-20 2022-03-01 Merck Patent Gmbh Stable catalyst ink formulations, methods of using such inks in fiber formation, and articles comprising such fibers
WO2015124250A1 (en) 2014-02-20 2015-08-27 Merck Patent Gmbh Stable catalyst ink formulations, methods of using such inks in fiber formation, and articles comprising such fibers
US12059644B2 (en) 2014-06-26 2024-08-13 Emd Millipore Corporation Filter structure with enhanced dirt holding capacity
WO2015200239A1 (en) 2014-06-26 2015-12-30 Emd Millipore Corporation Filter structure with enhanced dirt holding capacity
WO2016167871A1 (en) 2015-04-17 2016-10-20 Emd Millipore Corporation Method of purifying a biological materia of interest in a sample using nanofiber ultrafiltration membranes operated in tangential flow filtration mode
US10675588B2 (en) 2015-04-17 2020-06-09 Emd Millipore Corporation Method of purifying a biological material of interest in a sample using nanofiber ultrafiltration membranes operated in tangential flow filtration mode
WO2018064992A1 (en) * 2016-10-06 2018-04-12 Nafigate Corporation, A.S. Method for depositing a layer of polymeric nanofibers prepared by electrostatic spinning of a polymer solution or melt on electrically nonconductive materials, and a multilayer composite thus prepared containing at least one layer of polymeric nanofibers
EP3366362A1 (en) 2017-02-23 2018-08-29 Sefar AG A protective vent and method for producing a protective vent
WO2019016605A1 (en) 2017-07-21 2019-01-24 Merck Millipore Ltd MEMBRANES OF NONWOVEN FIBERS
US12186713B2 (en) 2017-07-21 2025-01-07 Merck Millipore Ltd. Non-woven fiber membranes
WO2020092688A1 (en) 2018-11-01 2020-05-07 Emd Millipore Corporation Efficient production of nanofiber structures
EP3880335B1 (en) 2019-10-24 2023-03-29 SAATI S.p.A. A method for preparing a composite filter medium and the composite filter medium obtained with this method
WO2021167814A1 (en) 2020-02-18 2021-08-26 Emd Millipore Corporation Sterilizable porous filtration media containing nanofiber
EP4092184A1 (en) 2021-05-18 2022-11-23 Sefar AG Method for producing a carrier layer with a hydrophilic polymeric nanocoating
US12186776B2 (en) 2021-05-18 2025-01-07 Sefar Ag Method for producing a carrier layer with a hydrophilic polymeric nanocoating
EP4177050A1 (en) 2021-11-04 2023-05-10 Sefar AG Polymeric fabric
EP4379127A1 (en) 2022-11-29 2024-06-05 Sefar AG Method of producing an object having a fluorinated polymer coating
DE102023108102A1 (de) 2023-03-30 2024-10-02 Greenerity Gmbh Brennstoffzellenkathode, verfahren zu deren herstellung und brennstoffzelle
WO2024200508A1 (de) 2023-03-30 2024-10-03 Greenerity Gmbh Brennstoffzellenkathode, verfahren zu deren herstellung und brennstoffzelle

Also Published As

Publication number Publication date
TW200902779A (en) 2009-01-16
WO2008106903A3 (en) 2008-10-30
CZ17577U1 (cs) 2007-06-11

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