The present disclosure relates to a hydrogel fibre comprising an ionic hydrogel and a second component in a plurality of compartments, wherein the second component is selected from a second hydrogel, a hydrophilic solution, or a mixture thereof. It is also disclosed the method to obtain the aforesaid hydrogel fibres. This disclosure also relates to a composition comprising the hydrogel fibres and a suitable carrier, and an article/kit, a bundle, a mesh or a membrane comprising the hydrogel fibre. A composition comprising an ionic hydrogel and a second component for use in medicine administered in a hydrogel fibre comprising a plurality of compartments is also disclosed.

An electro-optic fiber including a conductive fiber, a layer of electro-optic medium on the conductive fiber, and a conductor on the layer of electro-optic medium. A method of making the electro-optic fiber including the steps of coating a conductive fiber with an electro-optic medium and applying a conductor to the electro-optic medium. The resulting fibers can be woven to create a color-changing material, such as a fabric.

An electro-optic fiber including a conductive fiber, a layer of electro-optic medium on the conductive fiber, and a conductor on the layer of electro-optic medium. A method of making the electro-optic fiber including the steps of coating a conductive fiber with an electro-optic medium and applying a conductor to the electro-optic medium. The resulting fibers can be woven to create a color-changing material, such as a fabric.

A fiber having a surface region and an interior region includes a polymer comprising at least one of a vinyl acetate moiety or a vinyl alcohol moiety, the fiber having a transverse cross-section including the interior region comprising the polymer having a first degree of hydrolysis and the surface region comprising the polymer having a second degree of hydrolysis greater than the first degree of hydrolysis.

A method of producing, from a continuous or discontinuous (e.g., chopped) carbon fiber, partially to fully converted metal carbide fibers. The method comprises reacting a carbon fiber material with at least one of a metal or metal oxide source material at a temperature greater than a melting temperature of the metal or metal oxide source material (e.g., where practical, at a temperature greater than the vaporization temperature of the metal or metal oxide source material). Additional methods, various forms of carbon fiber, metal carbide fibers, and articles including the metal carbide fibers are also disclosed.

A method of producing, from a continuous or discontinuous (e.g., chopped) carbon fiber, partially to fully converted metal carbide fibers. The method comprises reacting a carbon fiber material with at least one of a metal or metal oxide source material at a temperature greater than a melting temperature of the metal or metal oxide source material (e.g., where practical, at a temperature greater than the vaporization temperature of the metal or metal oxide source material). Additional methods, various forms of carbon fiber, metal carbide fibers, and articles including the metal carbide fibers are also disclosed.

Examples herein include prosthetic valves, valve leaflets and related methods. In an example, a prosthetic valve is included having a plurality of leaflets. The leaflets can each have a root portion and an edge portion substantially opposite the root portion and movable relative to the root portion. The leaflets can include a fibrous matrix including polymeric fibers having an average diameter of about 10 nanometers to about 10 micrometers. A coating can surround the polymeric fibers within the fibrous matrix. The coating can have a thickness of about 3 to about 30 nanometers. The coating can be formed of a material selected from the group consisting of a metal oxide, a nitride, a carbide, a sulfide, or fluoride. In an example, a method of making a valve is included. Other examples are also included herein.

Disclosed is a napped artificial leather napped including: a non-woven fabric that is an entangle body of ultrafine fibers; and an elastic polymer impregnated into the non-woven fabric, the napped artificial leather having, at least on one side thereof, a napped surface formed by napping the ultrafine fibers, wherein the ultrafine fibers contain 0.5 mass % or more of a pigment (A), the elastic polymer contains 0 to 0.01 mass % of a pigment (B), and the ultrafine fibers and the elastic polymer are undyed; the napped surface has a lightness L* value of 25 or less in a color coordinate space (L*a*b* color space); and a ratio of an area occupied by the elastic polymer, observed on the napped surface, to a total area of an area occupied by the ultrafine fibers and the area occupied by the elastic polymer is 0.5% or less.

The antiseptic 3D printing filament contains the following coaxial layers arranged radially outside-in: an antiseptic layer, a color layer inside and next to the antiseptic layer, a support layer inside and next to the color layer, and a resin layer inside and next to the support layer. The antiseptic layer, the color layer, and the support layer are melted and joined to the resin layer with a temperature between 100 and 500 degrees Celsius and the filament diameter is between 0.80 and 3.20 mm. When an object is produced from a 3D printer using the filament, the produced object is antiseptic without additional coating or spraying antiseptic material, thereby reducing production time and effort. The filament is also prevented from contamination with prolonged antiseptic capability.

A multi-component fiber includes at least two elongated fiber bodies. A first fiber body consists of a first material including a phase change material and a second fiber body consists of a second material and encloses the first fiber body. The phase change material is non-encapsulated or in raw form and the first material includes a viscosity modifier selected from polyolefines having a density in the range of 890-970 kg/m.sup.3 as measured at room temperature according to ISO 1183-2 and a melt flow rate in the range 0.1-60 g/10 minutes as measured at 190° C. with a 21.6 kg weight according to ISO 1133. Further, a textile, a fabric and an absorbent article include the multi-component fiber.