Described herein are methods of using electrospun core-shell fibers for bulk electroporation. The disclosed electrospun core-shell fibers include (i) a central core that is electrically conductive having an exterior surface, wherein the core comprises a first polymer and an electroconductive material; (ii) a shell adjacent to the exterior surface of the core, the shell comprising a second polymer; and (iii) one or more bioactive agents in the shell. In one aspect, the fibers are electrospun fibers.

Provided is a leather fiber for leather spun yarn with improved physical properties of the leather spun yarn by containing leather fibers with more improved length, thickness, fineness, and the like than conventional leather fibers, in which the leather fiber has an average length of 15 mm or more and 40% or more of the content of fibers of more than 15 mm, in the leather fibers for the leather spun yarn contained in the leather spun yarn formed by containing the leather fibers and natural fibers or/and regenerated fibers.

The present disclosure is directed to a naniofiber comprising a jellyfish extract and at least one non-jellyfish-derived electrospinnable polymer. The jellyfish extract may comprise an alcohol extract of jellyfish biomass. The jellyfish extract may comprise comprise Q-mucin. Methods of producing the nanofiber are also disclosed.

A polypeptide copolymer, a preparation method thereof, a porous fibrous scaffold including the same, and a method for nerve regeneration or growth are disclosed. The polypeptide copolymer comprises: a glutamate unit; and a glutamic acid unit, wherein a ratio of a content of the glutamic acid unit to a content of the glutamate unit is in a range from 10:90 to 90:10.

Disclosed herein are methods of forming a fiber mat, involving forming an aqueous solution of at least one protein, at least one polysaccharide, and optionally a plasticizer, and electrospinning the aqueous solution onto a collector to form a mat.

Disclosed herein is the production of medical textile material with nanofiber surface that has transdermal drug release properties and that is coated with azithromycin active substance by using needle electrospinning method and ultrasonic spray pyrolysis (USP) technique. Specifically disclosed is a nanofiber medical textile material production method that includes the steps of preparing polymer solutions containing PVP (polyvinylpyrrolidone) with a concentration of 12 wt % and GEL (gelatin) with a concentration of 0.72 wt %; determining solution properties such as conductivity, viscosity, and surface tension, producing nanofibers from prepared polymer solutions by atmosphere-controlled horizontal needle fiber spinning (electrospinning) setup, obtaining PVP/GEL nanofibers after the fiber spinning process, thin film coating of the drug active substance on the obtained nanofibers, PVP/GEL nanofibers by the USP method, and cross-linking of both polymers to facilitate the final application processes of the drug-release material.

A composite yarn spun of separate fibers may include a soybean fiber; a cellulose fiber with incorporated organic seaweed; and a Ramie fiber. A knitted fabric composition may include yarns as defined above.

Disclosed herein are methods of forming a fiber mat, involving forming an aqueous solution of at least one protein, at least one polysaccharide, and optionally a plasticizer, and electrospinning the aqueous solution onto a collector to form a mat.

An artificial leather is provided in some embodiments of the present disclosure, including: an artificial bio-nutritional fiber layer and a mycelium layer. The artificial bio-nutritional fiber layer includes a first surface, a second surface opposite to the first surface and a plurality of holes, in which the plurality of holes extends from the first surface to the second surface. The mycelium layer encapsulates the first surface and the second surface of the artificial bio-nutritional fiber layer, and extends from the first surface to the second surface through the plurality of holes. A manufacture method of an artificial leather is further provided in some embodiments of the present disclosure.

Wet-spun fibers of -1,3-glucan, the wet-spun fibers containing -1,3-glucan as the only constituent molecule and a method for producing the same, and sub-micron fibrils and a method for producing the same. The wet-spun fibers contain only -1,3-glucan, represented by a specific Chemical Formula (1), as a constituent molecule. The production method of the wet-spun fibers includes preparing spun fibers from a -1,3-glucan raw material, represented by the specific Chemical Formula (1), by a method (I) in which viscose is prepared from the -1,3-glucan raw material, or a method (II) in which the -1,3-glucan raw material is dissolved in a good solvent.