The purpose of the present invention is to provide a composite electrolyte membrane which has excellent chemical resistance and can maintain sufficient mechanical strength even under conditions of high humidity and high pressure, which are the operating conditions for electrochemical hydrogen pumps and water electrolyzers. This composite electrolyte membrane, which is for achieving said purpose, has a composite layer obtained by combining a polyelectrolyte with a mesh woven material that satisfies (1) and (2) and comprises liquid crystal polyester fibers or polyphenylene sulfide fibers. (1): Mesh thickness (m)/fiber diameter (m)<2.0. (2): Opening (m)/fiber diameter (m)>1.0.

A filtration membrane including a first layer comprising a polyester terephthalate nonwoven fabric, a second layer comprising a polyvinylidene fluoride matrix doped with a polyvinylpyrrolidone and titanium dioxide nanoparticles, and a third layer comprising a polypyrrole polymer. A method of making the membrane is also described. The membrane of the present disclosure is self-cleaning under visible light irradiation conditions.

A filtration membrane including a first layer comprising a polyester terephthalate nonwoven fabric, a second layer comprising a polyvinylidene fluoride matrix doped with a polyvinylpyrrolidone and titanium dioxide nanoparticles, and a third layer comprising a polypyrrole polymer. A method of making the membrane is also described. The membrane of the present disclosure is self-cleaning under visible light irradiation conditions.

A method of forming an electronic device on a flexible substrate without using acetone dissolvent, including the steps of: printing a hydrophobic mask on a porous membrane to form a pattern thereon which is complementary to a desired pattern; filtering an aqueous suspension of an electronic material through the non-printed region of the porous membrane, whereby some electronic material is deposited on said non-printed region following the desired pattern; pressing the flexible substrate against the printed face of the membrane in order to transfer the patterned electronic material deposited on the porous membrane to the flexible substrate to form the electronic device thereon.

A water-proof air-permeable filter (1) includes: a resin film (2) having formed therein a plurality of through pores (21); and a treated layer (3) having hydrophobicity and oil repellency, and formed on at least one of both surfaces in the thickness direction of the resin film (2) such that the treated layer (3) has openings (31) at positions corresponding to the through pores (21). The through pores (21) each have a predetermined size larger than or equal to 0.01 m and smaller than or equal to 10 m, and are uniformly distributed such that a density of the through pores falls within specific limits included in a range from 10 to 110.sup.8 pores/mm.sup.2.

A water-proof air-permeable filter (1) includes: a resin film (2) having formed therein a plurality of through pores (21); and a treated layer (3) having hydrophobicity and oil repellency, and formed on at least one of both surfaces in the thickness direction of the resin film (2) such that the treated layer (3) has openings (31) at positions corresponding to the through pores (21). The through pores (21) each have a predetermined size larger than or equal to 0.01 m and smaller than or equal to 10 m, and are uniformly distributed such that a density of the through pores falls within specific limits included in a range from 10 to 110.sup.8 pores/mm.sup.2.

Mixed Matrix Membrane (MMM) are composite membranes for gas separation and comprising a quantity of inorganic filler particles, in particular metal organic framework (MOF), dispersed throughout a polymer matrix comprising one or more polymers. This disclosure is directed to MOF functionalized through addition of a pendant functional group to the MOF, in order to improve interaction with a surrounding polymer matrix in a MMM. The improved interaction aids in avoiding defects in the MMM due to incompatible interfaces between the polymer matrix and the MOF particle, in turn increasing the mechanical and gas separation properties of the MMM. The disclosure is also directed to a MMM incorporating the surface functionalized MOF.

A composite polymeric membrane includes polylactic acid polymer and an additive component, wherein the additive component includes activated carbon functionalized with polyethylenimine. A method of filtering a liquid includes contacting a liquid with a composite polymeric membrane, wherein the liquid includes one or more metals and the membrane includes an additive component and a polylactic acid polymer, and wherein the additive component includes activated carbon functionalized with polyethylenimine.

A composite polymeric membrane includes polylactic acid polymer and an additive component, wherein the additive component includes activated carbon functionalized with polyethylenimine. A method of filtering a liquid includes contacting a liquid with a composite polymeric membrane, wherein the liquid includes one or more metals and the membrane includes an additive component and a polylactic acid polymer, and wherein the additive component includes activated carbon functionalized with polyethylenimine.

A membrane for fluid species transport includes a porous substrate and a selective-transport layer comprising 2-D-material flakes. The porous substrate defines surface pores with dimensions larger than 2 microns, and the selective-transport layer coats the porous substrate and spans across the surface pores. The porous substrate can be contacted with a liquid or coating to fill or coat the surface pores of the porous substrate. Next, a 2-D-material-flake solution is deposited on the porous substrate. Evaporation of solvent from the deposited 2-D-material-flake solution forms the selective-transport layer.