Abstract: Embodiments of the present disclosure describe thin-film composite membranes comprising a crosslinked alginate layer on a surface of a porous woven or non-woven support. Embodiments of the present disclosure further describe methods of preparing membranes, methods of manufacturing membranes, methods of separating chemical species, methods of using the membranes for organic solvent nanofiltration, pervaporation, and the like.

Abstract: Embodiments of the present disclosure describe sensors and sensing applications based on a composite material comprising an isoporous block copolymer film and a plurality of carbon nanoparticles embedded in the isoporous block copolymer film. Embodiments of the present disclosure further describe composite materials, methods of fabricating the composite materials, methods of using the composite materials, sensors comprising the composite materials, and the like.

Abstract: Embodiments of the present disclosure describe a copolymer composition comprising a polyether-based copolymer, wherein the copolymer dissolves in one or more of an alcohol and alcohol-water mixture. Embodiments of the present disclosure describe a thin-film composite membrane comprising a porous support and a selective layer comprising a polyether-based copolymer, wherein the polyether-based copolymer dissolves in one or more of an alcohol and alcohol-water mixture. Embodiments of the present disclosure describe a method of capturing one or more chemical species comprising contacting a thin-film composite membrane with a fluid composition, wherein the fluid composition includes at least CO2 and capturing CO2 from the fluid composition. Embodiments of the present disclosure also describe methods of synthesizing copolymer compositions and methods of fabricating composite membranes.

Abstract: Embodiments of the present disclosure provide for polystyrene-b-polyethylene oxide (PS-b-PEO) block copolymer nanoporous membranes, methods of making a PS-b-PEO block copolymer nanoporous membrane, methods of using PS-b-PEO block copolymer nanoporous membranes, and the like.

Abstract: Provided herein are methods of making asymmetric membranes comprising a first layer and a second layer. The methods include preparing a polymeric solution comprising one or more polymers, casting the polymeric solution to form a polymeric film, contacting the polymeric film with a solvent comprising a crosslinker under conditions to form a first layer on the top of the film, wherein the first layer is dense and solvent resistant, and contacting the polymeric film having the dense, solvent-resistant first layer with a non-solvent solution under conditions that form a porous second layer on the bottom of the film.

Abstract: Embodiments of the present disclosure describe polymer blend membranes comprising a layer including a polymer blend of regenerated cellulose and polydimethylsiloxane and a support in contact with the layer. Embodiments of the present disclosure describe methods of preparing a polymer blend membrane comprising contacting a cellulose precursor and a PDMS precursor in a solvent to form a polymer blend solution, depositing the polymer blend solution on a surface of a suitable support, curing the PDMS precursor of the polymer blend solution to form PDMS, and converting the cellulose precursor to cellulose to form a polymer blend membrane including cellulose and PDMS. Embodiments of the present disclosure describe methods of separating chemical species by one or more of organic solvent nanofiltration and pervaporation.

Abstract: Embodiments of the present disclosure describe thin-film composite membranes comprising a of the present disclosure further describe methods of preparing membranes, methods of manufacturing membranes, methods of separating chemical species, methods of using the membranes for organic solvent nanofiltration, pervaporation, and the like.

Abstract: Embodiments of the present disclosure describe sensors and sensing applications based on a composite material comprising an isoporous block copolymer film and a plurality of carbon nanoparticles embedded in the isoporous block copolymer film. Embodiments of the present disclosure further describe composite materials, methods of fabricating the composite materials, methods of using the composite materials, sensors comprising the composite materials, and the like.

Abstract: A structure, and methods of making the structure are provided in which the structure can include: a membrane having a first layer and a second layer, the first layer comprising polymer chains formed with coordination complexes with metal ions, and the second layer consisting of a porous support layer formed of polymer chains substantially, if not completely, lacking the presence of metal ions. The structure can be an asymmetric polymeric membrane containing a metal-rich layer as the first layer. In various embodiments the first layer can be a metal-rich dense layer. The first layer can include pores. The polymer chains of the first layer can be closely packed. The second layer can include a plurality of macro voids and can have an absence of the metal ions of the first layer.

Abstract: Embodiments of the present disclosure provide for polystyrene-b-polyethylene oxide (PS-b-PEO) block copolymer nanoporous membranes, methods of making a PS-b-PEO block copolymer nanoporous membrane, methods of using PS-b-PEO block copolymer nanoporous membranes, and the like.

Abstract: Embodiments of the present disclosure provide for polystyrene-b-polyethylene oxide (PS-b-PEO) block copolymer nanoporous membranes, methods of making a PS-b-PEO block copolymer nanoporous membrane, methods of using PS-b-PEO block copolymer nanoporous membranes, and the like.

Abstract: The present application offers a solution to the current problems associated with recovery and recycling of precious metals such as gold and copper from scrap material, discarded articles, and other items. The solution is premised on a microporous chelating polymeric membrane comprising a poly-thiosemicarbazide formed from N,N?-diaminopiperazine and a suitable reactant such as diisothiocyanate; the membrane may be formed through the use of a solvent system and non-solvent system. The membrane may be used to separate metal ions from solutions and incorporated in a membrane module.

Abstract: Embodiments of the present disclosure describe a copolymer composition comprising a polyether-based copolymer, wherein the copolymer dissolves in one or more of an alcohol and alcohol-water mixture. Embodiments of the present disclosure describe a thin-film composite membrane comprising a porous support and a selective layer comprising a polyether-based copolymer, wherein the polyether-based copolymer dissolves in one or more of an alcohol and alcohol-water mixture. Embodiments of the present disclosure describe a method of capturing one or more chemical species comprising contacting a thin-film composite membrane with a fluid composition, wherein the fluid composition includes at least CO2 and capturing CO2 from the fluid composition. Embodiments of the present disclosure also describe methods of synthesizing copolymer compositions and methods of fabricating composite membranes.

Abstract: The present application offers a solution to the current problems associated with recovery and recycling of precious metals from scrap material, discard articles, and other items comprising one or more precious metals. The solution is premised on a microporous chelating polymeric membrane. Embodiments include, but are not limited to, microporous chelating polymeric membranes, device comprising the membranes, and methods of using and making the same.

Abstract: Embodiments of the invention include methods for the production of porous membranes. In certain aspects the methods are directed to producing polymeric porous membranes having a narrow pore size distribution.

Abstract: Provided herein are methods of making asymmetric membranes comprising a first layer and a second layer. The methods include preparing a polymeric solution comprising one or more polymers, casting the polymeric solution to form a polymeric film, contacting the polymeric film with a solvent comprising a crosslinker under conditions to form a first layer on the top of the film, wherein the first layer is dense and solvent resistant, and contacting the polymeric film having the dense, solvent-resistant first layer with a non-solvent solution under conditions that form a porous second layer on the bottom of the film.

Abstract: A structure, and methods of making the structure are provided in which the structure can include: a membrane having a first layer and a second layer, the first layer comprising polymer chains formed with coordination complexes with metal ions, and the second layer consisting of a porous support layer formed of polymer chains substantially, if not completely, lacking the presence of metal ions. The structure can be an asymmetric polymeric membrane containing a metal-rich layer as the first layer. In various embodiments the first layer can be a metal-rich dense layer. The first layer can include pores. The polymer chains of the first layer can be closely packed. The second layer can include a plurality of macro voids and can have an absence of the metal ions of the first layer.

Abstract: Embodiments of the present disclosure provide for polystyrene-b-polyethylene oxide (PS-b-PEO) block copolymer nanoporous membranes, methods of making a PS-b-PEO block copolymer nanoporous membrane, methods of using PS-b-PEO block copolymer nanoporous membranes, and the like.

Abstract: Embodiments of the invention include methods for the production of porous membranes. In certain aspects the methods are directed to producing polymeric porous membranes having a narrow pore size distribution.

Abstract: The invention relates to a method for producing membrane, in particular gas separation membrane, wherein the membrane comprises a selective separating layer. The following steps are carried out: a) a polymer solution is produced from at least one polymer and at least one polyglycol ether, b) the polymer solution is cast into a film, c) in a further step, the selective separating layer is produced from the film, preferably by drying. The invention, among other things, further relates to a membrane, in particular gas separation membrane, comprising a selective separating layer.