A radiation curable composition for preparing a polymeric membrane includes a) a membrane polymer selected from the group consisting of a polysulfone (PSU), a polyether sulfone (PES), a polyether etherketone (PEEK), a polyvinylchloride (PVC), a polyacrylonitrile (PAN), a polyvinylidene fluoride (PVDF), a polyimide (PI), a polyamide (PA) and copolymers thereof; b) a hydrophobic monomer or oligomer having at least two free radical polymerizable groups independently selected from the group consisting of an acrylate group, a methacrylate group, an acrylamide group, a methacrylamide group, a styrene group, a vinyl ether group, a vinyl ester group, a maleate group, a fumarate group, an itaconate group, and a maleimide group; and c) an organic solvent for the membrane polymer and the hydrophobic monomer. A polymeric membrane and a method for manufacturing the membrane are also disclosed.

An object is to form a hole having a desired size accurately and uniformly in a carbon nanomaterial used for a filter or the like, such as a graphene, a carbon nanotube, or a carbon nanohorn.

Provided is a method for perforating a carbon nanomaterial for forming a hole having a desired size in a carbon nanomaterial, characterized in that the carbon nanomaterial is heated and held at a low temperature in the air containing oxygen of 160 to 250 C. for a predetermined time and that a hole having a desired size is thereby formed uniformly in the carbon nanomaterial by controlling a length of heating time.

A system for manufacturing a membrane filter is provided. The system includes a radiation source operative to emit radiation that contacts discrete portions of a filter substrate so as to facilitate the formation of openings within the filter substrate, and a collimator disposed between the filter substrate and the radiation source and operative to restrict some of the radiation from contacting the filter substrate.

An air-impermeable water vapor transport membrane comprises an active layer on a microporous polymeric substrate. The active layer comprises a polyethylene-oxide containing copolymer and a polar protic solvent in an amount of about 3% to about 100% of copolymer weight in the active layer. Molecules of the protic solvent are bonded to the copolymer. The polar protic solvent reduces temperature-dependent variability in the water-vapor permeability of the membrane.

A membrane including a polymer substrate having pore channels and a metal-organic framework disposed on the polymer substrate. Methods of producing the membrane are described. Methods of separating gases using the membrane are also provided.

Laser-induced graphene (LIG) and laser-induced graphene scrolls (LIGS) materials and, more particularly to LIGS, methods of making LIGS (such as from polyimide (PI)), laser-induced removal of LIG and LIGS, and 3D printing of LIG and LIGS using a laminated object manufacturing (LOM) process.

The present disclosure relates to a transport mechanism apparatus for transporting at least one of a gas or a fluid. The transport mechanism may have an inlet, an outlet and an engineered cellular structure forming a periodic nodal surface, which may include a triply periodic minimal surface (TPMS) structure. The structure is formed in a layer-by-layer three dimensional (3D) printing operation to include cells propagating in three dimensions, where the cells include non-intersecting, continuously curving wall portions having openings, and where the opening in the cells form a plurality of flow paths throughout the transport mechanism from the inlet to the outlet, and where portions of the cells form the inlet and the outlet.

The present disclosure is related to a polymeric membrane, comprising a modified surface obtained from coating with hydrophilic monomers and curing the hydrophilic monomers with electron beam, wherein the hydrophilic monomers comprise at least one amino moiety, at least one polyoxyalkylene unit, and at least one (meth)acrylate moiety.

A method for synthesizing a supported molecular sieve membrane by microwaves includes the steps of aging, heating and synthesizing. The aging step is to make a support in contact with a synthetic liquid at 25 C. to 70 C. for 10 hours to 24 hours; the heating step is to raise a temperature of an aged system from an aging temperature to a synthesis temperature within 1 minute to 10 minutes; and the synthesizing step is to synthesize at 80 C. to 120 C. for 2 minutes to 15 minutes. The steps of heating and synthesizing are powered by microwaves.

Porous liquid-filtering membranes are provided having a boundary region substantially surrounding the pore region and having greater tear resistance than the pore region.