Fibers, webs that include a plurality of such fibers, and methods of making such fibers, wherein each fiber includes a mixture including one or more aromatic polyesters and one or more organic polyester polymers, wherein the one or more organic polyester polymers have a molecular weight of 700 Daltons to 50,000 Daltons and comprises one equivalent weight of sulfonic acid groups or ionizable sulfonic acid salt groups per 700 to 8000 grams (of the organic polyester polymer).

Fibers, webs that include a plurality of such fibers, and methods of making such fibers, wherein each fiber includes a mixture including one or more aromatic polyesters and one or more organic polyester polymers, wherein the one or more organic polyester polymers have a molecular weight of 700 Daltons to 50,000 Daltons and comprises one equivalent weight of sulfonic acid groups or ionizable sulfonic acid salt groups per 700 to 8000 grams (of the organic polyester polymer).

A nonwoven web comprising a layer of polymeric fibers, wherein, based on the total number of polymeric fibers, at least 10% the polymeric fibers in said layer are coarse fibers having a fiber diameter of 4 m or more, and at least 10% of the polymeric fibers in said layer are fine fibers having a fiber diameter of 2 m or less. Also described herein is a method for making the nonwoven web, comprising melt-blowing a polymer mixture comprising two immiscible or partially miscible polymers.

A nonwoven web comprising a layer of polymeric fibers, wherein, based on the total number of polymeric fibers, at least 10% the polymeric fibers in said layer are coarse fibers having a fiber diameter of 4 m or more, and at least 10% of the polymeric fibers in said layer are fine fibers having a fiber diameter of 2 m or less. Also described herein is a method for making the nonwoven web, comprising melt-blowing a polymer mixture comprising two immiscible or partially miscible polymers.

Provided is a conductive nonwoven fabric, including a meltblown nonwoven fabric made from a melt liquid-crystal-forming wholly aromatic polyester having a melt viscosity at 310 C. of less than or equal to 20 Pa.Math.s and satisfying (A) an average fiber diameter from 0.1 m to 5 m, (B) two or less film-like objects existing per 1 mm.sup.2 of the nonwoven fabric, (C) a breaking length in a warp direction of greater than or equal to 10 km and a breaking length in a weft direction of greater than or equal to 6 km, (D) a basis weight from 1.0 g/m.sup.2 to 15 g/m.sup.2, (E) a thickness from 5 m to 50 m, and (F) an air permeability of less than or equal to 300 cc/cm.sup.2/second, and a metal coating film formed on the meltblown nonwoven fabric.

Provided is a conductive nonwoven fabric, including a meltblown nonwoven fabric made from a melt liquid-crystal-forming wholly aromatic polyester having a melt viscosity at 310 C. of less than or equal to 20 Pa.Math.s and satisfying (A) an average fiber diameter from 0.1 m to 5 m, (B) two or less film-like objects existing per 1 mm.sup.2 of the nonwoven fabric, (C) a breaking length in a warp direction of greater than or equal to 10 km and a breaking length in a weft direction of greater than or equal to 6 km, (D) a basis weight from 1.0 g/m.sup.2 to 15 g/m.sup.2, (E) a thickness from 5 m to 50 m, and (F) an air permeability of less than or equal to 300 cc/cm.sup.2/second, and a metal coating film formed on the meltblown nonwoven fabric.

Fiber-reinforced nonwoven composites having a wide variety of uses (e.g., leisure goods, aerospace, electronics, equipment, energy generation, mass transport, automotive parts, marine, construction, defense, sports and/or the like) are provided. The fiber-reinforced nonwoven composite includes a plurality of carbon fibers and a polymer matrix. The plurality of carbon fibers have an average fiber length from about 50 mm to about 125 mm. The fiber-reinforced nonwoven composite comprises a theoretical void volume from about 0% to about 10%.

Fiber-reinforced nonwoven composites having a wide variety of uses (e.g., leisure goods, aerospace, electronics, equipment, energy generation, mass transport, automotive parts, marine, construction, defense, sports and/or the like) are provided. The fiber-reinforced nonwoven composite includes a plurality of carbon fibers and a polymer matrix. The plurality of carbon fibers have an average fiber length from about 50 mm to about 125 mm. The fiber-reinforced nonwoven composite comprises a theoretical void volume from about 0% to about 10%.

The invention provides a melt-blown non-woven filter material, which is prepared by the following method: provide a polylactic acid raw material; dissolve the polylactic acid raw material into a DMF solvent; the polylactic acid electrospinning layer is prepared by electrospinning method using polylactic acid spinning solution as raw material; provide polylactic acid raw material again and provide polyphenylene sulfide raw material; and perform surface treatment. Polylactic acid raw material, polyphenylene sulfide raw material, nano-titania powder are mixed well with the processing assistant to obtain a mixture; the mixture is extruded into modified polylactic acid particles; then a modified polylactic acid melt-blown fiber layer is formed on the polylactic acid electrospinning layer by using the melt-blown method. The invention innovatively implements loading nano-titania particles into the synthetic fiber, which makes the fiber material presented in this invention not only have filtering effects, but also have photocatalytic ability.

The invention provides a melt-blown non-woven filter material, which is prepared by the following method: provide a polylactic acid raw material; dissolve the polylactic acid raw material into a DMF solvent; the polylactic acid electrospinning layer is prepared by electrospinning method using polylactic acid spinning solution as raw material; provide polylactic acid raw material again and provide polyphenylene sulfide raw material; and perform surface treatment. Polylactic acid raw material, polyphenylene sulfide raw material, nano-titania powder are mixed well with the processing assistant to obtain a mixture; the mixture is extruded into modified polylactic acid particles; then a modified polylactic acid melt-blown fiber layer is formed on the polylactic acid electrospinning layer by using the melt-blown method. The invention innovatively implements loading nano-titania particles into the synthetic fiber, which makes the fiber material presented in this invention not only have filtering effects, but also have photocatalytic ability.