Abstract: A technique with which a nanofibrous resin spun by electrospinning can be introduced into inner parts of fibers. The process for fiber composite material production is a process which comprises spinning a nanofibrous resin toward split fibers continuously conveyed along a given conveyance route and thereby combining the split fibers with the resin to produce a fiber composite material. The process involves a resin spinning step in which the nanofibrous resin spun with an electrospinning device is flown toward the split fibers. In the resin spinning step, the direction in which the nanofibrous resin proceeds is made to be the same as the conveying direction of the split fibers by blowing an air stream from a blower on the nanofibrous resin.

Abstract: The present invention is a bioactive, nanofibrous material construct which is manufactured using a unique electrospinning perfusion methodology. One embodiment provides a nanofibrous biocomposite material formed as a discrete textile fabric from a prepared liquid admixture of (i) a non-biodegradable durable synthetic polymer; (ii) a biologically active agent; and (iii) a liquid organic carrier. These biologically-active agents are chemical compounds which retain their recognized biological activity both before and after becoming non-permanently bound to the formed textile material; and will become subsequently released in-situ as discrete freely mobile agents from the fabric upon uptake of water from the ambient environment.

Abstract: An expandable endoluminal prosthesis may include a graft body and a support structure attached to the graft body. The graft body may include a tubular body of nonwoven electrospun fibers disposed about a longitudinal axis. A first fiber matrix segment may be attached to and extend in a transverse direction along the tubular body. A second fiber matrix segment may be attached to and extend in a longitudinal direction along the tubular body.

Abstract: The present invention relates to a fibrous scaffold for use as a substrate in soft tissue applications, in particular for preparing annulus fibrosus (AF) tissue. In aspects, the present invention also relates to an engineered biological material comprising AF tissue; constructs comprising one or more engineered biological materials; methods for producing the biological materials and constructs; and methods of using the biological materials and constructs.

Abstract: An apparatus and method for making coiled and buckled electrospun fiber including (a) providing a solution of a polymer in an organic solvent and a device for electrospinning fiber; b) subjecting the polymer solution to an electric field such that at least one fiber is electrospun; (c) subjecting the so formed fiber to electrical bending and mechanical buckling instability to hereby form a coiled and buckled fiber; (d) collecting the at least one fiber on a collector, such that a fiber structure is produced.

Abstract: A method for preparing a high temperature melt integrity separator, the method comprising spinning a polymer by one or more of a mechanical spinning process and an electro-spinning process to produce fine fibers.

Abstract: The disclosed subject matter describes systems and methods of electrospinning a fiber for a variety of applications. An exemplary embodiment includes a medical device application for delivering a therapeutic agent, such as a sclerosing agent, to the walls of a blood vessel to perform sclerotherapy. A method of fabricating a medical balloon comprises charging a polymer material with an electric voltage, dispensing the charged polymeric material through a nozzle, collecting the charged polymeric material on a grounded mandrel, wherein the mandrel includes a tubular body having a plurality of openings extending through the tubular body, and forming an electrospun medical balloon defined by a body having a varied thickness.

Abstract: The invention provides an electrospinning apparatus, which comprises one or more spinneret, a rotating collector disposed from the spinneret and configured to collect the fibers, and a sideway motion device disposed on or connected to the spinneret or the rotating collector and configured to propel or move the spinneret or the rotating collector, wherein the sideway motion device is controlled by a controlling unit for providing an angular speed (?) of the sideway motion with a formula: ?=tan?1 x/H wherein x is a parallel motion speed of the device and H is a vertical height between the spinneret and the rotating collector and wherein the angular speed (?) is in a range of about 1.0×10?4 to about 1.0 (°/sec). Also provided is the 2-D or 3-D membranes produced therefrom and a method of using the apparatus of the invention.

Abstract: The invention relates to a process for forming fibers from a spinning solution utilizing a high speed rotary sprayer. The fibers can be collected into a uniform web for selective barrier end uses. Fibers with an average fiber diameter of less that 1,000 nm can be produced.

Abstract: Aspects of the disclosure relate to synthetic tissue or organ scaffolds and methods and compositions for promoting or maintaining their structural integrity. Aspects of the disclosure are useful to prevent scaffold damage (e.g., delamination) during or after implantation into a host. Aspects of the disclosure are useful to stabilize tissue or organ scaffolds that include electrospun fibers.

Abstract: A method for fabricating natural polymer yarn comprises the following steps: (a) forming a natural polymeric long fiber by wet spinning or electro spinning from a natural polymer solution; (b) combining the natural polymeric long fiber and at least one polymeric fiber by a false twist texturing process to form a natural polymeric yarn. A natural polymer yarn relates to the method. A natural polymer fabric includes said natural polymer yarn. A method of using said natural polymer fabric for medical dressing. By means of a false twist texturing process, the natural polymer yarn with enhanced tensile strength and elongation could reduce the drawback of conventional wound dressing products which lack strength and stretchiness in a wet condition.

Abstract: An apparatus for a production of two-dimensional or three-dimensional fibrous materials of microfibers or nanofibers containing a set of spinning metal nozzles connected to a first potential, a set of electrodes of a collector facing the set of the nozzles, arranged at regular spacing and connected to a second potential, and a collecting plate or a collecting cylinder for collecting microfibers or nanofibers settled between couples of adjacent electrodes of the collector.

Abstract: Systems and methods for electrospinning of core-sheath fibers are provided. The systems and methods achieve optimization of a shear stress that exists at a fluid boundary between core and sheath polymer solutions, by varying certain parameters of an electrospinning apparatus and/or the solutions used therewith.

Abstract: A nanofiber manufacturing apparatus for fabricating nanofibers from a raw material liquid by electrostatic explosions includes a housing internally having an electrospinning space in which nanofibers are fabricated, and a support structure for supporting an electrospinning head including nozzles for ejecting the raw material liquid into the electrospinning space. The support structure is fittable to and removable from the housing and is enabled to self-stand in a state of having been removed from the housing.

Abstract: A method of manufacturing nanofibers according to an aspect of the present invention by electrically stretching a solution in space and depositing the nanofibers in a given region includes: effusing the solution from an effusing body having an effusing hole which allows the solution to effuse in a direction; applying a given voltage between the effusing body and a charging electrode being conductive and disposed at a given distance from the effusing body, using a charging power supply configured to apply the given voltage; and determining a flight path of the solution and the nanofibers such that a length of the flight path of the solution and the nanofibers is longer than a shortest path length which is a length of a shortest imaginary path connecting an end opening of the effusing hole and an accumulation part on which the nanofibers are accumulated.

Abstract: Embodiments relate generally to methods of manufacture of a filtration media, such as a personal protection equipment mask or respirator, which may incorporate an electrospinning process to form nanofibers. Some embodiments may comprise electrospinning material onto a convex mold, which may, for example, be in the shape of a human face. Other embodiments may comprise electrospinning material onto an inner and/or outer shell of a personal protective equipment mask, such as a flat fold mask. In an embodiment, the electrospun nanofibers may be functionalized, and therefore may, for example, be operable to capture one or more gases.

Abstract: A method of forming particles that includes performing a strong force attenuation of a mixture to form pre-particles. The mixture including a base compound and a dielectric additive having an elevated dielectric constant dispersed therein. The pre-particles are then dielectrically spun in an electrostatic field to further attenuate the pre-particles and form the particles.

Abstract: The invention relates to a nanofiber web preparing apparatus and method via electro-blown spinning. The nanofiber web preparing method includes feeding a polymer solution, which is a polymer dissolved into a given solvent, toward a spinning nozzle, discharging the polymer solution via the spinning nozzle, which is charged with a high voltage, while injecting compressed air via the lower end of the spinning nozzle, and collecting fiber spun in the form of a web on a grounded suction collector under the spinning nozzle, in which both of thermoplastic and thermosetting resins are applicable, the solution does not need to be heated and electrical insulation is readily realized.

Abstract: A method of preparing antimicrobial-containing polymeric products is provided, the method involving electrospinning a dispersion comprising a dispersible polymer, a fiberizing polymer, and one or more antimicrobial agents. The electrospun material is heated to remove solvent and the fiberizing polymer, giving a nonwoven polymeric material having antimicrobial agent incorporated therein. The material can be in the form of, for example, a non-woven sheet, tube, or covering.

Abstract: The development and construction of implantable artificial organs, and a process for manufacturing three-dimensional polymer microscale and nanoscale structures for use as scaffolds in the growth of biological structures such as hollow organs, luminal structures, or other structures within the body are disclosed.

Abstract: A large variety of electrospun fibers can be produced to encapsulate a large variety of additives within the subcompartments or substructures of the manufactured electrospun fiber. Furthermore, the manufactured electrospun fibers can be electrostatically arranged within a filter component of a smoking article during the manufacturing process. By modifying the various parameters that control the electrospinning process, a diverse set of electrospun fibers can be manufactured that vary in composition, in substructural organization, and in dimension. The electrospun fiber produced by electrospinning comprises at least one type of polymeric material that encapsulates or supports the retention of at least one type of a flavorant or a non-flavorant within the electrospun fiber. A polymeric material provides a supporting structure for encapsulating at least one type of a flavorant or a non-flavorant.

Abstract: The present invention relates to a medical device and method of forming the medical device. In particular, the present invention relates to a medical device having a tubular membrane structure over a radially expandable structural frame, and to a method of forming the tubular membrane on the radially expandable structural frame. In one aspect, a structural frame is placed over a spinning mandrel and a fiber is electro-statically spun over at least a portion of the structural frame forming a membrane. A transfer sheath may be used between the mandrel and structural frame to prevent the electro-statically spun fiber from adhering to the mandrel. In another aspect, a first membrane is spun over the mandrel before the structural frame is placed over the mandrel. In this aspect, at least a portion of the structural frame is sandwiched between the membranes. The membrane or membranes and structural frame form a fiber spun frame assembly. The fiber spun frame assembly may be coated with an elastic polymer.

Abstract: Methods and apparatuses are provided for producing fibers via electroblowing. In an embodiment of the present invention, a polymer stream, formed from a spinning nozzle, passes through a first temperature zone for a first residence time, and subsequently passes through a second temperature zone for a second residence time, where the second zone has a higher average temperature than the first zone. In an embodiment of an apparatus of the present invention, the apparatus has a region between the spinning nozzle outlet and collector that includes at least two zones through which a polymer stream passes, where the second zone has a higher average temperature than the first zone.

Abstract: A method for producing a nanofiber-based product includes providing a carrier material solution having a carrier material, and bringing the carrier material in contact with a collector by electrospinning. The carrier material essentially consists of a polymer being—at least after having contacted the collector—embedded in a polymer, which polymer is formed by a crosslinker of the general formula (I) wherein R1 is a single bond between the adjacent carbon atoms, or a carbohydrate chain having 1 to 10 carbon atoms and optionally bearing a hydroxy group, and wherein R2, R3, R4 and R5 are independently from each other a hydrogen; a carbohydrate chain having 1 to 10 carbon atoms and optionally bearing a hydroxy group; a hydroxy group; or a sulfhydryl group; with the provision that the compound bears at least two hydroxy groups, or two sulfhydryl groups, or one hydroxy group and one sulfhydryl group.

Abstract: A centrifugal electrospinning apparatus, centrifugal electrospinning method for the production of fibrous structures, and electrospun fibrous structures are provided.

Abstract: Disclosed herein is a method for producing a sheet including a silica aerogel, the method including (S1) gelling a water glass solution in a mixture of an alcohol and water to prepare a wet gel, (S2) hydrophobically modifying the surface of the wet gel with a non-polar organic solvent, an organosilane compound and an alcohol, (S3) dissolving the hydrophobically modified silica gel and a polymer in an aprotic organic solvent to prepare an electrospinning solution, and (S4) electrospinning the electrospinning solution to produce a fiber web including a silica aerogel, and a sheet in which a polymer and a silica aerogel coexist in the form of a fiber.

Abstract: A process for production of a nonwoven fabric, which comprises a step wherein a thermoplastic polymer is dissolved in a mixed solvent composed of a volatile good solvent and a volatile poor solvent, a step wherein the resulting solution is spun by an electrospinning method and a step wherein a nonwoven fabric accumulated on a collecting sheet is obtained, is employed to provide a nonwoven fabric having a surface area sufficiently large as a matrix for cell culturing in the field of regenerative medicine, with large gaps between filaments and a low apparent density suitable for cell culturing.

Abstract: Apparatus and method for producing fibrous materials in which the apparatus includes an extrusion element configured to electrospin a substance from which the fibers are to be composed by an electric field extraction of the substance from a tip of the extrusion element, a collector disposed from the extrusion element and configured to collect the fibers, a chamber enclosing the collector and the extrusion element, and a control mechanism configured to control a gaseous environment in which the fibers are to be electrospun. The apparatus and method provide a way to produce a fiber collection having a plurality of nanofibers disposed in relation to each other. The nanofibers in the fiber collection are preferentially oriented along a longitudinal axis of the fiber collection.

Abstract: A randomly-oriented 3-D fibrous structure and a method for making the same. The method involves electrospinning a spinning dope with an electrospinning apparatus, wherein the spinning dope comprises: a solvent; a polymer dissolved in the solvent, wherein the dissolved polymer is in subunits having molecular weights that are about 5 to about 150 kDa; and a surfactant; to form one or more fibers that comprise a polymer-surfactant complex and that arrange randomly and evenly in three dimensions when contacting a collecting board of the electrospinning apparatus thereby forming the randomly-oriented 3-D fibrous structure.

Abstract: The present disclosure provides a stress micro mechanical system for measuring stress and strain in micro- and nano-fibers, tubes, and wires as well as for measuring the interface adhesion force and stress in nanofibers and nanotubes embedded in a polymer matrix. Also described are nanofibers comprising a cascade of surface ripples or periodic necks. Such surface features may be formed during cold drawing of electrospun nanofibers.

Abstract: A method for producing one or more nanofibers includes providing (a) a solution comprising a polymer and a solvent, (b) a nozzle for ejecting the solution, and (c) a stationary collector disposed a distance d apart from the nozzle. A voltage is applied between the nozzle and the stationary collector, and a jet of the solution is ejected from the nozzle toward the stationary collector. An electric field intensity of between about 0.5 and about 2.0 kV/cm is maintained, where the electric field intensity is defined as a ratio of the voltage to the distance d. At least a portion of the solvent from the stream is evaporated, and one or more polymer nanofibers are deposited on the stationary collector as the stream impinges thereupon. Each polymer nanofiber has an average diameter of about 500 nm or less and may serve as a precursor for carbon fiber production.

Abstract: Devices and methods for high-throughput manufacture of concentrically layered nanoscale and microscale fibers by electrospinning are disclosed. The devices include a hollow tube having a lengthwise slit through which a core material can flow, and can be configured to permit introduction of sheath material at multiple sites of Taylor cone formation formation.

Abstract: A method of manufacturing nano-fiber non-woven fabrics is provided. The method comprises preparing a polyurethane solution by dissolving polyurethane in an organic solvent, producing an electrospinning solution by adding far infrared ray emitting particles, antibacterial inorganic particles, and deodorization inorganic particles to the polyurethane solution, and electrospinning the electrospinning solution to form the nano-fiber non-woven fabric. The far infrared ray emitting particles may be obtained by adding a metal oxide to ceramics and sintering the metal oxide-added ceramics. The antibacterial inorganic particles may be obtained by impregnating a zirconium-based carrier with silver ions. The deodorization inorganic particles may be obtained by impregnating a zirconium-based or a silica oxide-based carrier with an amine-based compound.

Abstract: Disclosed herein is a fibrous separation membrane for secondary batteries, comprising: a support layer containing cellulose fiber; and a first heat-resistant resin layer applied on one side of the support layer.

Abstract: The present disclosure relates to the preparation of a polymer composite material for building air conditioning or dehumidification having superior water-adsorbing ability, durability and antibacterial properties by electro spinning. Specifically, the disclosed method for preparing a polymer composite material for building air conditioning or dehumidification includes: (S1) adding a crosslinking agent or a crosslinking agent and a porous filler for conferring durability and antibacterial properties into a hydrophilic polymer solution antibacterial properties to prepare a polymer composite material solution; (S2) electrospinning the polymer composite material solution to prepare a nanofiber sheet; and (S3) crosslinking the nanofiber sheet by heat-treatment.

Abstract: Composite filtering structures comprising nanofibres spatially distributed between microfibers, wherein on the nanofibers and on the microfibers a palisade of protrusions of nanometric sizes in the form of nano-protrusions is produced, which palisade comprises nano-protrusions oriented with respect to the fibre surface at an angle ranging from about 70° to about 120°. A method of obtaining such composite filtering structures by a method that includes feeding a thermoplastic material from an extruder to at least one fibre formation die, stretching formed fibres coming out from the die, which fibres being still in a molten phase, to smaller sizes by a stream of hot air flowing tangentially to the fibres, collecting the fibres after their solidification and thus forming a mat of packed fibres providing a filtering structure , and subjecting the filtering structure to chemical etching.

Abstract: Disclosed are methods of forming three dimensional arrays of aligned nanofibers in an open, loose structure of any desired depth. The arrays are formed according to an electrospinning process utilizing two parallel conducting plates to align the fibers and rotating tracks to distribute the fibers throughout the array. Arrays can be used as formed, for instance in tissue engineering applications as three dimensional scaffolding constructs. As-formed arrays can be combined with other materials to form a composite 3-D structure. For instance, composite polymeric materials can be electrospun to form composite nanofibers within the array. Multiple polymeric materials can be electrospun at different areas of the array to form a composite array including materially different nanofibers throughout the array. The arrays can be loaded with other fibrous or non-fibrous materials to form a composite array. Arrays can also be rolled to form a uniaxial fiber bundle.

Abstract: The purpose of the invention is to provide a surgical mask with sufficient antibacterial properties, by uniformly manifesting on the surface of nanofibers a functional material with antibacterial and antiviral properties. The problem is solved by a mask with a functional material which comprises a nanofiber containing at least one base polymer selected from a group consisting of PVA, polylactic acid, fibroin, chitosan, chitin, nylon 6, nylon 6,6, nylon 9T, nylon 610, polyamide, polystyrene, polyacrylonitrile, polyethylene terephthalate, polyvinyl chloride, polyurethane, polyester, zein, collagen and methoxymethylated nylon, and at least one functional substance selected from a group consisting of catechin polyphenols, persimmon tannin polyphenols, grape seed polyphenols, soybean polyphenols, lemon peel polyphenols, coffee polyphenols, phenylcarboxylic acid, ellagic acid and coumalin, and having a diameter of 1 nm to 2000 nm.

Abstract: Electrospinning of crystalline particles comprising active pharmaceutical ingredients (API) from suspensions yields fibrous compositions comprising the API. The morphology and size of the crystalline particles may be preserved. The particles may be predominantly retained by fibers and distributed throughout the fibrous mesh. Tablet forms of the APIs prepared from the fibrous compositions demonstrate higher dissolution rates than tablets prepared from compacted powders of the APIs.

Abstract: Embodiments of the present disclosure provide electrospinning devices, methods of use, uncompressed fibrous mesh, and the like, are disclosed.

Abstract: The invention relates to a method for producing a preform by means of an electrospinning process. The present invention also relates to the use of the present preform as a substrate for growing human or animal tissue thereon. The present invention furthermore relates to a method for growing human or animal tissue on a substrate, wherein the present preform is used as the substrate.

Abstract: An electrospinning equipment is provided. The electrospinning equipment includes a power supply, a collector and a material supply electrically connected to the power supply facing the collector and having a spinneret and a guide unit coupled to the spinneret and bent toward the collector, and the spinneret is configured at a central portion of the guide unit.

Abstract: Devices and methods for high-throughput manufacture of concentrically layered nanoscale and microscale fibers by electrospinning are disclosed. The devices include a hollow tube having a lengthwise slit through which a core material can flow, and can be configured to permit introduction of sheath material at multiple sites of Taylor cone formation formation.

Abstract: A container having a plurality of orifices in an outer peripheral wall and having a space communicating with the orifices is rotated to extrude an electrically charged raw material liquid containing a polymer material from the space through the orifices by centrifugal force. This allows the electrically charged raw material liquid to form a fibrous material. At this time, the raw material liquid is supplied to the space in which the raw material liquid is filled by a raw material liquid pump so that the raw material liquid is extruded from the orifices at a predetermined pressure. That is, the raw material liquid in the space is pressurized. Also, the shape of the space in the container is set so that the centrifugal force exerted on the raw material liquid is constant.

Abstract: A first method comprises: dissolving a polymer in a terpene, terpenoid, or aromatic solvent to form a polymer solution; dissolving a salt in a polar organic solvent to form a salt solution; and mixing the salt solution and the polymer solution to form a mixture. The salt and the polar organic solvent do not cause substantial precipitation of the polymer upon mixing with the polymer solution. A resulting terpene, terpenoid, or aromatic solvent phase of the mixture is suitable for forming fibers by electric-field-driven spinning from one or more spinning tips onto a target substrate. A composition comprises the terpene, terpenoid, or aromatic solvent phase of the mixture resulting from the method. A second method comprises forming fibers by electric-field-driven spinning of the first composition from one or more spinning tips onto a target substrate. A second composition comprises the fibers formed by the second method.

Abstract: Methods for electrospinning a hydrophobic coaxial fiber into a superhydrophobic coaxial fiber mat can include providing an electrospinning coaxial nozzle comprising a core outlet coaxial with a sheath outlet, ejecting an electrospinnable core solution from the core outlet of the electrospinning coaxial nozzle, ejecting a hydrophobic sheath solution from the sheath outlet of the electrospinning coaxial nozzle, wherein the hydrophobic sheath solution annularly surrounds the core solution, applying a voltage between the electrospinning coaxial nozzle and a collection plate, wherein the voltage induces a jet of the electrospinnable core solution annularly surrounded by the hydrophobic sheath solution to travel from the electrospinning coaxial nozzle to the collection plate to form the hydrophobic coaxial fiber comprising an electrospinnable polymer core coated with a hydrophobic sheath material, and wherein collection of the hydrophobic coaxial fiber on the collection plate yields the superhydrophobic coaxial fib

Abstract: A porous membrane can include a polyazole.

Abstract: In a method for producing a polyamide nanofiber product that contains PTFE particles, a spinning solution containing polyamide, PTFE, and a conductivity-increasing additive is provided and nanofibers are produced by electrospinning from the spinning solution. The conductivity-increasing additive is an acid-resistant additive; a surfactant additive; or an acid-resistant and surfactant additive and contains one or more organic salts. The polyamide nanofiber product with PTFE particles is used in filter media and is especially applied to a filter layer of cellulose or synthetic material.

Abstract: A device is made by forming sacrificial fibers on a substrate mold. The fibers and mold are covered with a first material. The substrate mold is removed, and the covered fibers are then removed to form channels in the first material.

Abstract: Provided is a functional fiber and a fiber aggregate for realizing various functions, an adhesive for easily bonding electronic components, and a method for manufacturing the same. Particularly, a fiber extended in a length direction includes a carrier polymer and a plurality of functional particles, wherein the plurality of functional particles are embedded in the carrier polymer and physically fixed to the carrier polymer to be integrated.