A monolayer membrane containing gelling polymer particles having at least one of a basic functional group and an acidic functional group, and having a thickness of less than 5 ?m. A composite having a porous carrier and gelling polymer particles having at least any one of a basic functional group and an acidic functional group and filling up the surface pores of the porous carrier. The invention can provide a novel material capable of efficiently separating an acid gas from a mixed gas.

The present invention provides a separation membrane for blood processing, comprising a polysulfone polymer, a hydrophilic polymer and a polymer having a hydroxy group in a side chain and having a solubility of 0.5 g or less in water (100 g) at 20? C., in which the content of the polymer falls within a specific range, and a blood processing apparatus having the membrane installed therein.

The present disclosure provides extruded or spun, semi-permeable, porous hollow fibres, comprising covalent ester, thioester and/or amide crosslinked polypeptides as well as processes for their production. The hollow fibres may be produced from protein, protein extracts, and/or protein isolates derived from plants, animals, bacteria, algae, archaea, and/or fungi, and in certain embodiments are intended to be suitable for human and/or animal ingestion. In some embodiments, the hollow fibres may be designed to be used in the production of cartridges that are compatible with existing and/or novel bioreactor platforms, for harbouring cell cultures in cultured meat production.

Embodiments described herein relate generally to graphene oxide membranes for fluid filtration and more specifically to graphene oxide membranes having tunable permeability, rejection rate, and flux. Some embodiments of the graphene oxide membranes disclosed herein are characterized as having a flux of at least about 2.510.sup.4 gallons per square foot per day per psi with a 1 wt % lactose solution at room temperature, and a lactose rejection rate of at least 50% with a 1 wt % lactose solution.

The present disclosure provides extruded or spun, semi-permeable, porous hollow fibres, comprising covalent ester, thioester and/or amide crosslinked polypeptides as well as processes for their production. The hollow fibres may be produced from protein, protein extracts, and/or protein isolates derived from plants, animals, bacteria, algae, archaea, and/or fungi, and in certain embodiments are intended to be suitable for human and/or animal ingestion. In some embodiments, the hollow fibres may be designed to be used in the production of cartridges that are compatible with existing and/or novel bioreactor platforms, for harbouring cell cultures in cultured meat production.

Filtration apparatus including Graphene Oxide (GO) are described herein. The GO membranes include a plurality of graphene oxide sheets, each of the graphene oxide sheets covalently bound to a chemical spacer. The filtration apparatus can include a GO membrane and a sulfonated polyethersulfone (S-PES). The filtration apparatus can exhibit improved performance with respect to prior art membranes (e.g., high flux and rejection rate) in applications such as pulp and paper processing, which facilitates achieving permeate quality targets. The filtration apparatus described herein can also offer a more stable replacement for reverse osmosis membranes which are known to degrade under strongly alkaline conditions and high temperatures.

A method for modifying a polymer membrane is disclosed and includes: pre-wetting a polymer membrane using a crosslinking agent solution, where the crosslinking agent solution includes a first crosslinking agent and a second crosslinking agent; irradiating the pre-wetted polymer membrane to initiate a crosslinking reaction; and rinsing and drying the polymer membrane after the crosslinking reaction to obtain a modified polymer membrane. The method for modifying the polymer membrane uses two cross-linking agents to modify the polymer membrane, thereby forming a 3D network on the surface and within the bulk of the polymer membrane to obtain a modified polymer membrane. The modified polymer membrane has low protein adsorption, caustic stability, autoclave sterilization stability, and gamma sterilization stability, while retaining the overall mechanical properties to meet the pleatability requirement for filter manufacturing.