The invention relates to a composite for a protective vent with at least one carrier layer and an electrospinning membrane, which is arranged on the at least one carrier layer, wherein the electrospinning membrane consists of superimposed fibers lying one above the other, forming a porous structure, whereby the porous structure is designed, whereby the carrier layer comprises a monofilament fabric, a plasma coating is applied both to the electrospinning membrane and to the monofilament fabric of the at least one carrier layer and a bonding is provided that connects the carrier layer and the membrane. Furthermore, the invention relates to an according method for producing the inventive protective vent.

A method for the manufacture of a carbon nanomembrane is disclosed. The method comprises preparing a metallised polymer substrate and applying on the metallised polymer substrate a monolayer prepared from an aromatic molecule. The aromatic molecule is cross-linked to form a carbon nanomembrane. The carbon nanomembrane is coated by a protective layer and subsequently the carbon nanomembrane and the protective layer are released from the metallised polymer substrate. Finally, the carbon nanomembrane and the protective layer are optionally placed on a support. The protective layer can be optionally removed. The carbon nanomembrane can be used for filtration.

Described herein are nanofibers and methods for making nanofibers that include any one or more of (a) a non-homogeneous charge density; (b) a plurality of regions of high charge density; and/or (c) charged nanoparticles or chargeable nanoparticles. In one aspect, the present invention fulfills a need for filtration media that are capable of both high performance (e.g., removal of particle sizes between 0.1 and 0.5 ?m) with a low pressure drop, however the invention is not limited in this regard.

Provided are a recyclable electret filtering membrane, a preparation method therefor and a cleaning and charge regeneration method therefor. The preparation method includes: dissolving fluorine-containing polymer particles and polyoxyethylene particles in deionized water to prepare a spinning solution, and then performing electrostatic spinning, calcining, cooling, drying and corona charging to obtain the recyclable electret filtering membrane. A surface of the filtering membrane is subjected to water drop rolling cleaning and friction electrification after dust holding, and then dried to realize charge regeneration and reuse. The filtering membrane obtained in the present invention has an initial surface potential of (?600)-(?950) V, the potential can be regenerated to (?700)-(?1000) V by water drop rolling and electrification after dust holding, the charge recovery rate is 90%-125%, the dust removal rate is 90%-100%, and the filtering efficiency for PM.sub.2.5 is equal to or greater than 94%.

The invention provides a membrane comprising tubes extending through a polymer, wherein substantially all of the tubes are parallel with each other. Also provided is a method for producing a membrane, the method comprising: placing tubes on a substrate, subjecting the tubes to a magnetic field for a time and at a magnetic field strength to cause the tubes to align parallel with each other while simultaneously causing depending ends of the tubes to embed within the substrate; applying polymer to the tubes and substrate in an amount to affix the tubes relative to each other and relative to the substrate, and applying an etchant that cleaves a specific type of the bonds within the polymer to unblock the upstream ends of the nanotubes.

An ultrafine continuous fibrous ceramic filter, which comprises a filtering layer of a fibrous porous body, wherein the fibrous porous body comprises continuous ultrafine fibers of metal oxide which are randomly arranged and layered, and powdery nano-alumina incorporated into the ultrafine fibers or coated thereon, the ultrafine fibers being obtained by electrospinning a spinning solution comprising a metal oxide precursor sol-gel solution, and optionally, a polymer resin, and sintering the electrospun fibers, in which the ultrafine fibers have an average diameter of 10?500 nm, and the fibrous porous body has a pore size of maximum frequency ranging from 0.05 to 2 ?m, exhibits high filtration efficiency at a high flow rate, and can be regenerated.

A polymer fiber formed of statistical copolymers, each of which contains zwitterionic repeat units and hydrophobic repeat units, the zwitterionic repeat units constituting 20-75 wt % of the statistical copolymer and the hydrophobic repeat units being characterized in that a homopolymer formed thereof has a glass transition temperature above room temperature. Also disclosed is a fibrous membrane containing such polymer fibers in which greater than 90% of the polymer fibers are each independently rib bon-shaped fibers or wrinkly fibers. A method of preparing such a fibrous membrane is disclosed as well.

Provided is an adsorptive membrane, which includes: a support member having a plurality of first pores; and a first adsorptive member which is stacked on the support member and has a plurality of second pores formed therein and which is made by accumulating ion exchange nanofibers for adsorbing foreign substances.

A high flux and low pressure drop microfiltration (MF) membrane and a method for making the MF membrane. The microfiltration membranes are formed by a method that includes: preparing a nanofibrous structure; and modifying the surface of the nanofibrous structure with a surface modifier. The nanofibrous structure includes an electrospun nanofibrous scaffold or a polysaccharide nanofiber infused nanoscaffold or mixtures thereof. The electrospun nanofibrous scaffold can include polyacrylonitrile (PAN) or polyethersulfone (PES))/polyethylene terephthalate (PET) or mixtures thereof. The surface modifier includes polyethylenimine (PEI) and polyvinyl amine (Lupamin) cross-linked by ethylene glycol diglycidyl ether (EGdGE)/glycidyltrimethylammonium chloride (GTMACl) or poly(1-(1-vinylimidazolium)ethyl-3-vinylimdazolium dibromide (VEVIMIBr).

The present invention relates to a medical bioabsorbable composite having a fibrous ceramic reinforcing agent and a method for preparing the same and, more particularly, to a medical bioabsorbable composite including a fibrous ceramic reinforcing agent including a fibrous ceramic reinforcing agent having a high aspect ratio, wherein the fibrous ceramic reinforcing agent may have a diameter ranging from 10 to 900 nm, and wherein a length to diameter aspect ratio may be equal to or greater than 5, and a method for preparing the same.