The present invention provides highly permeable and porous polybenzimidazole membranes, methods of making them, and their application as a high-performance membrane support for gas separation composite membranes. The polybenzimidazole membranes are bonded to a fabric substrate.

The present invention provides highly permeable and porous polybenzimidazole membranes, methods of making them, and their application as a high-performance membrane support for gas separation composite membranes. The polybenzimidazole membranes are bonded to a fabric substrate.

The present application relates to an unsupported, permanently hydrophilic filtration membrane, and its method of formation. The membrane comprises a polymeric matrix material and a cross-linked polyoxazoline hydrophilic additive blended throughout said matrix material.

The present application relates to an unsupported, permanently hydrophilic filtration membrane, and its method of formation. The membrane comprises a polymeric matrix material and a cross-linked polyoxazoline hydrophilic additive blended throughout said matrix material.

In summary, the disclosure provides certain membranes useful as filter materials in the removal of metal ions, metal particulates, and/or organic contaminants from liquid compositions, in particular liquid compositions used in the microelectronic device industry. The membranes of the disclosure are porous membranes comprised of poly(quinoline) polymers. Advantageously, the poly(quinoline) membranes are thermally stable and hydrolytically stable and can thus be cleaned between uses using acidic material such as dilute hydrochloric acid, without suffering from significant degradation. The poly(quinoline) polymers can be designed to be soluble in certain solvents, thus enabling the manufacture of the corresponding porous membranes by immersion-casting techniques.

A nanomembrane and a forming method thereof are provided. The nanomembrane according to embodiments of the present invention comprises an elastomer layer and nanostructures disposed on the elastomer layer. The method for forming a nanomembrane according to embodiments of the present invention comprises forming a nanocomposite solution comprising nanostructures and an elastomer solution, forming an elastomer solution layer by providing the nanocomposite solution on a first solvent, and forming an elastomer layer by drying the elastomer solution layer, and forming a nanomembrane comprising the elastomer layer and the nanostructures bonded to the elastomer layer. The nanocomposite solution is formed by mixing the nanostructures and the elastomer solution with a second solvent, and the elastomer solution is formed by mixing elastomer and a third solvent.

A nanomembrane and a forming method thereof are provided. The nanomembrane according to embodiments of the present invention comprises an elastomer layer and nanostructures disposed on the elastomer layer. The method for forming a nanomembrane according to embodiments of the present invention comprises forming a nanocomposite solution comprising nanostructures and an elastomer solution, forming an elastomer solution layer by providing the nanocomposite solution on a first solvent, and forming an elastomer layer by drying the elastomer solution layer, and forming a nanomembrane comprising the elastomer layer and the nanostructures bonded to the elastomer layer. The nanocomposite solution is formed by mixing the nanostructures and the elastomer solution with a second solvent, and the elastomer solution is formed by mixing elastomer and a third solvent.

The present invention relates to a method to make polymeric membranes that are preferably useful in dialysis, wherein the method conducts at least one membrane-forming step and/or post-forming processing step with the use of sonication. Polymeric membrane, such as polymeric hollow fiber membrane, having improved one or properties are further described.

The present invention relates to a method to make polymeric membranes that are preferably useful in dialysis, wherein the method conducts at least one membrane-forming step and/or post-forming processing step with the use of sonication. Polymeric membrane, such as polymeric hollow fiber membrane, having improved one or properties are further described.

The invention relates to a method for manufacturing a hollow fiber membrane bundle from a plurality of polysulfone and PVP-based hollow fiber membranes which encompasses the providing of a spinning solution comprising a polysulfone-based material, in particular polysulfone, a vinylpyrrolidone-based polymer, in particular polyvinylpyrrolidone, an aprotic solvent, in particular dimethylacetamide, providing a coagulant liquid comprising water and an aprotic solvent, in particular dimethylacetamide, co-extruding the spinning solution and the coagulant liquid through a concentric annular spinneret into a hollow strand, whereby the cavity of the strand is filled with coagulant liquid, conducting the strand through a precipitation gap, introducing the strand into a precipitating bath comprised substantially of water so as to obtain a hollow fiber membrane, conducting the hollow fiber membranes through at least one rinsing bath and drying the hollow fiber membrane obtained, arranging the resulting hollow fiber membranes into a hollow fiber membrane bundle, and treating the hollow fiber membrane bundle with water vapor.