A nonwoven fabric manufacturing facility includes a fiber assembly manufacturing step and a heating and drawing step. In the fiber assembly manufacturing step, fibers formed using an electrospinning method are collected to form a fiber assembly. In the heating and drawing step, the fiber assembly is drawn to form nonwoven fabric in a state where the fiber assembly is heated to a melting point of the fibers. In the formed nonwoven fabric, an average pore diameter is 15 μm or more, a relative standard deviation of a pore diameter distribution is 0.1 or less, and an average fiber diameter of the fibers is 3 μm or less.

A bone regeneration material has a cotton-wool like structure formed of a plurality of electrospun fibers that contain bound BMP-2 through β-TCP binding peptide. The electrospun biodegradable fiber contains 25-65 vol % of β-TCP particles distributed in the fiber such that a portion of the β-TCP particles is exposed on a surface of the electrospun fiber and the remaining portion of the β-TCP particles is buried in the fiber. β-TCP binding peptides that are fused with BMP-2 are bound to the β-TCP particles so that BMP-2 is tethered to β-TCP particles on the surface of the fibers. Upon implantation of the bone regeneration material in a bone defect site of a human body, BMP-2 that are tethered to β-TCP particles on the surface of the bone regeneration material promotes proliferation and differentiation of cells at the bone defect site.

Methods of producing composite articles and composite articles are disclosed herein. A method of producing a composite article includes providing a nonwoven fabric substrate having a surface. In some embodiments, the method may include electrospinning a nylon solution on the surface of the nonwoven fabric substrate to coat and/or impregnate the nonwoven fabric substrate with a nylon fiber.

Embodiments of the present disclosure relate to a violacein-polymer composite nanofibrous antimicrobial membrane and a method for manufacturing same, wherein the membrane comprises violacein having antimicrobial efficacy against methicillin-resistant Staphylococcus aureus (MRSA) caused by resistance to antibiotics and is formed such that one-dimensional nanofibers are three-dimensionally entangled, and can be used as an antimicrobial membrane for preventing and treating MRSA infections. Specifically, a solution in which violacein is uniformly mixed is prepared by dissolving a large amount of violacein in a solution with a polymer dissolved therein, and the solution is subjected to an electrospinning process to synthesize a nanofibrous membrane in which violacein is uniformly included inside/outside nanofibers without agglomeration. Thus, this is different from existing methods for applying a material to the surface of fibers.

Embodiments of the present disclosure relate to a process for making a carbon nanomaterial fiber product and/or textile product. Such products may have new and/or enhanced properties as compared to similar products and, according to the embodiments of the present disclosure, it is less expensive to make.

A polylactic acid fiber is provided. The polylactic acid fiber includes a first polylactic acid material and a second polylactic acid material. The first polylactic acid material is encapsulated by the second polylactic acid material. Based on a total volume of the polylactic acid fiber being 100%, a volume of the second polylactic acid material is at least 20%. The second polylactic acid material includes 15 wt % to 85 wt % of poly(D-lactic acid) and 15 wt % to 85 wt % of poly(L-lactic acid).

In a first embodiment, a coal treatment process includes exposing a material comprising coal to ionic liquid(s) to form a first mixture, isolating a residue from the first mixture, forming a second mixture comprising the residue, and electrospinning the second mixture to form a carbon fiber precursor material. In a second embodiment, a coal treatment process includes exposing a material comprising coal to ionic liquid(s) to form a mixture comprising solids and a liquid fraction, separating and filtering the liquid fraction from the mixture, and isolating one or more compounds from the liquid fraction. In a third embodiment, a coal treatment process includes exposing a material comprising coal to ionic liquid(s) to form a first mixture comprising residues, exposing the first mixture to (a) an acid, (b) a solvent, or (c) both to form a second mixture, and isolating rare earth elements and rare earth element compounds.

The invention relates to a system for manufacturing by electrospinning a composite fibre structure; wherein the system comprises a first device of solution electrospinning comprising a first head biased to a first voltage, a second device of melt electrospinning comprising a second head electrically connected to ground, and a moveable collector configured to be either electrically connected to ground or biased to a second voltage. Wherein the system further comprises switching means configured to selectively assign the electrical status of the collector.

A sheet of substrate (7) travels along a first path in a first direction between a first collecting electrode (1) and a second spinning wire electrode (2); and the second spinning wire electrode (2) travels in a second direction (10) approximately perpendicular to the first direction at an approximately constant operational distance to the sheet of substrate (7). One or more secondary guiding means (4) guide the second spinning wire electrode (2) in a third direction at least partly parallel to the first direction i.e. parallel to the traveling direction of the sheet of substrate, and tertiary guiding means (5) guide the second spinning wire electrode (2) in a fourth direction (11) approximately perpendicular to the first direction and parallel but opposite the second direction (10) at a constant operational distance to the sheet of substrate (7).

A device for producing electrospun polymer short fibers has a dosing electrode (1) and a collector medium (3) opposite the dosing electrode (1) in the dosing direction (2). In order to create a device that enables continuous production of electrospun polymer short fibers, a cutting grid (5), which can be heated at least to the softening temperature of the polymer and which has a mesh size that corresponds to the minimum fiber length, is arranged upstream of the collector medium (3) in the dosing direction (2).