The present application may provide a block copolymer and a use thereof. The present application may provide a block copolymer and a use thereof. The block copolymer of the present application may have excellent self-assembly properties or phase separation characteristics and simultaneously have characteristics capable of changing the self-assembly structure formed once, or provide a block copolymer capable of forming a pattern of phase separation structures in a polymer membrane.

A crosslinked protein-based separation membrane and application thereof. The separation membrane is formed by attaching a crosslinked protein nanomembrane to a porous membrane, the crosslinked protein nanomembrane is formed by crosslinking a two-dimensional nanomembrane which is formed by phase transition of a protein with a crosslinking agent, the separation membrane contains a dense surface layer and a support layer, the dense surface layer is the crosslinked protein nanomembrane, and the support layer is the porous membrane; the protein is any one of lysozyme, bovine serum albumin, insulin, and α-lactalbumin; the crosslinked protein-based separation membrane has a good biocompability, may serve as a dialysis membrane for blood purification, and has a higher retention ratio for large molecular proteins.

A polyolefin fiber that is formed by a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and nanoinclusion additive is provided. The nanoinclusion additive is dispersed within the continuous phase as discrete nano-scale phase domains. When drawn, the nano-scale phase domains are able to interact with the matrix in a unique manner to create a network of nanopores.

The invention provides polymer-grafted and functionalized nonwoven membranes adapted for use in bioseparation processes, the membranes including a nonwoven web of polyester fibers having an average fiber diameter of less than about 1.5 microns, each of the plurality of polyester fibers having grafted thereon a plurality of polymer segments constructed of a methacrylate polymer, each polymer segment carrying a functional group adapted for binding to a target molecule. The invention also provides a method of bioseparation comprising passing a solution comprising the target molecule, such as a protein, through the nonwoven membrane of the invention such that at least a portion of the target molecule in the solution binds to the nonwoven membrane. A method for preparing a polymer-grafted and functionalized nonwoven membrane adapted for use in bioseparation processes is also provided.

The invention provides polymer-grafted and functionalized nonwoven membranes adapted for use in bioseparation processes, the membranes including a nonwoven web of polyester fibers having an average fiber diameter of less than about 1.5 microns, each of the plurality of polyester fibers having grafted thereon a plurality of polymer segments constructed of a methacrylate polymer, each polymer segment carrying a functional group adapted for binding to a target molecule. The invention also provides a method of bioseparation comprising passing a solution comprising the target molecule, such as a protein, through the nonwoven membrane of the invention such that at least a portion of the target molecule in the solution binds to the nonwoven membrane. A method for preparing a polymer-grafted and functionalized nonwoven membrane adapted for use in bioseparation processes is also provided.

The present disclosure relates to hollow fiber tangential flow filters, including hollow fiber tangential flow depth filters, for various applications, including bioprocessing and pharmaceutical applications, systems employing such filters, and methods of filtration using the same.

The present disclosure relates to hollow fiber tangential flow filters, including hollow fiber tangential flow depth filters, for various applications, including bioprocessing and pharmaceutical applications, systems employing such filters, and methods of filtration using the same.

The present invention provides enthalpy exchanger elements (E, E′) and enthalpy exchangers comprising such elements. Furthermore, the invention discloses a method for producing such enthalpy exchanger elements and enthalpy exchangers, comprising the steps of a) providing an air-permeable sheet element (1); b) laminating at least one side (1a, 1b) of the sheet element (1) with a thin polymer film (3, 4) with water vapor transmission characteristics; and c) forming the laminated sheet element (1) into a desired shape exhibiting a three-dimensional corrugation pattern (5, 5, . . . ).

The present invention provides enthalpy exchanger elements (E, E′) and enthalpy exchangers comprising such elements. Furthermore, the invention discloses a method for producing such enthalpy exchanger elements and enthalpy exchangers, comprising the steps of a) providing an air-permeable sheet element (1); b) laminating at least one side (1a, 1b) of the sheet element (1) with a thin polymer film (3, 4) with water vapor transmission characteristics; and c) forming the laminated sheet element (1) into a desired shape exhibiting a three-dimensional corrugation pattern (5, 5, . . . ).

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 (μm)/fiber diameter (μm)<2.0. (2): Opening (μm)/fiber diameter (μm)>1.0.