An integrated and improved process for the production of acrylic fibers is described, specifically a process that starts from the comonomers and reaches the spinning step obtaining the final fiber.

An integrated and improved process for the production of acrylic fibers is described, specifically a process that starts from the comonomers and reaches the spinning step obtaining the final fiber.

A method for supporting repair of soft tissue with biopolymer fibers. Biopolymer is dissolved in acid in a closed container made of materials inert to the acid and to the collagen to form a biopolymer solution. The solution is stirred, then centrifuged to degas it. The degassed solution is put into syringes on a holder. The number of syringes equals the number of fibers in the bundle. The syringes are mounted in a rotatable holder. Essentially equal quantities of degassed solution are extruded from the syringes to produce fibers, which are gathered and fed into a formation buffer bath. The fibers are kept taught after extrusion and dehydrated in a dehydrating solution in a dehydrating bath. The fibers are wound a collector to collect the bundle. The fibers are used to support repair of soft tissue.

A method for supporting repair of soft tissue with biopolymer fibers. Biopolymer is dissolved in acid in a closed container made of materials inert to the acid and to the collagen to form a biopolymer solution. The solution is stirred, then centrifuged to degas it. The degassed solution is put into syringes on a holder. The number of syringes equals the number of fibers in the bundle. The syringes are mounted in a rotatable holder. Essentially equal quantities of degassed solution are extruded from the syringes to produce fibers, which are gathered and fed into a formation buffer bath. The fibers are kept taught after extrusion and dehydrated in a dehydrating solution in a dehydrating bath. The fibers are wound a collector to collect the bundle. The fibers are used to support repair of soft tissue.

Various examples of methods and systems related to nanofibrous microstructures including carbon nanofibrous microelectrode arrays are provided. In one example, a method includes electrospinning photosensitive nanofibers on a patterned substrate; immersing the photosensitive nanofibers in a refractive index matching medium; and exposing the immersed photosensitive nanofibers to ultraviolet (UV) light through the patterned substrate or through a front side photomask. In another example, a microelectrode array includes a carbon thin film (CTF) trace pattern including a plurality of CTF electrode pads; and a plurality of carbon nanofiber (CNF) pillars disposed on the plurality of CTF electrode pads.

Various examples of methods and systems related to nanofibrous microstructures including carbon nanofibrous microelectrode arrays are provided. In one example, a method includes electrospinning photosensitive nanofibers on a patterned substrate; immersing the photosensitive nanofibers in a refractive index matching medium; and exposing the immersed photosensitive nanofibers to ultraviolet (UV) light through the patterned substrate or through a front side photomask. In another example, a microelectrode array includes a carbon thin film (CTF) trace pattern including a plurality of CTF electrode pads; and a plurality of carbon nanofiber (CNF) pillars disposed on the plurality of CTF electrode pads.

A composite fiber for use in additive manufacturing such as fused filament fabrication is described along with methods of its construction and use. The composite fiber includes a single continuous fiber (e.g., a continuous carbon roving) and a polymer (e.g., a high glass transition polymer) in intimate contact. The composite fiber is formed through immersion of the continuous fiber in a series of two or more solutions that together include monomer(s), catalysts, or other materials for generating the polymer as the continuous fiber moves through the solutions.

Embodiments of the invention include articles incorporating fibrous fragments of mats of silica fibers and methods for producing such articles. The fiber mats may be formed via electrospinning of a sol gel produced with a silicon alkoxide reagent, such as tetraethyl ortho silicate, alcohol solvent, and an acid catalyst.

Embodiments of the invention include articles incorporating fibrous fragments of mats of silica fibers and methods for producing such articles. The fiber mats may be formed via electrospinning of a sol gel produced with a silicon alkoxide reagent, such as tetraethyl ortho silicate, alcohol solvent, and an acid catalyst.

A fiber manufacturing apparatus includes: a fiber manufacturing portion including a first operation unit including a first operation surface and a second operation unit including a second operation surface facing the first operation surface, wherein at least one of the first operation unit and the second operation unit performs a reciprocating motion to manufacture a fiber between the first operation surface and the second operation surface; and a fiber collecting portion configured to collect the fiber manufactured between the first operation surface and the second operation surface, wherein at least one of the first operation surface and the second operation surface includes a polymer solution.