An article that can be used for biomaterial capture comprises (a) a porous substrate; and (b) borne on the porous substrate, a polymer comprising interpolymerized units of at least one monomer consisting of (1) at least one monovalent ethylenically unsaturated group, (2) at least one monovalent ligand functional group selected from acidic groups, basic groups other than guanidino, and salts thereof, and (3) a multivalent spacer group that is directly bonded to the monovalent groups so as to link at least one ethylenically unsaturated group and at least one ligand functional group by a chain of at least six catenated atoms.

Disclosed is a composite membrane including a polymeric membrane having an H.sub.2 permeability of 500 Barrer or more at 25 degrees C., and a coating layer deposited on the polymer membrane by oxidative polymerization.

A multi-layer membrane which has a mixed polyamide selective layer supported on a porous polysulfone layer. The mixed polyamide selective layer includes reacted units of a polyfunctional acyl halide (e.g. trimesoyl chloride) and a diamine mixture containing 4,7,10-trioxa-1,13-tridecanediamine and a cyclic diamine (e.g. piperazine). Methods of fabricating the multi-layer membrane via techniques such as phase inversion and interfacial polymerization are described. The inventive membrane is evaluated on its water flux and salt rejection (e.g. sulfate and chloride salts) capabilities. A water desalination system containing the multi-layer membrane(s) is also provided.

Imidazole-containing polymer membranes and resins are described herein. Methods of their preparation and use are also described herein. The methods of using the membranes and resins include reducing acids from liquid phases.

The invention relates to extracorporeal blood circuits, and components thereof (e.g., hollow fiber membranes, potted bundles, and blood tubing), including 0.005% to 10% (w/w) surface modifying macromolecule. The extracorporeal blood circuits have an antithrombogenic surface and can be used in hemofiltration, hemodialysis, hemodiafiltration, hemoconcentration, blood oxygenation, and related uses.

The present disclosure relates to synthesis of porous polymer networks and applications of such materials.

A separation membrane for blood processing, wherein the separation membrane for blood processing includes: a separation membrane containing polysulfone-based polymer and polyvinylpyrrolidone; and a coating film provided on at least a part of the surface of the separation membrane and containing a polymer material having a structure represented by the following general formula (1):

##STR00001##

wherein R.sup.1 is a hydrogen atom or a methyl group; R.sup.2 is a methyl group or an ethyl group; n is 2 to 6 and m is 1 to 3; P denotes the number of repetition; and a plurality of each of R.sup.1, R.sup.2, n, and m present in one molecule may be the same or different.

The invention relates to a virus filter membrane which can be used for the removal of virus particles including parvovirus. The invention further relates to a method for producing the membrane. The membrane comprises polyacrylonitrile and polyvinylpyrrolidone.

A copolymer has blood compatibility and antithrombotic properties of greatly suppressing protein adhesion to be usable even when in contact with a biological component such as blood for a long period of time, and a medical device uses the copolymer. The copolymer is characterized by including a hydrophilic unit and a hydrophobic unit, wherein the hydrophobic unit contains at least one type of a carboxylic acid vinyl unit, and the number of carbon atoms at the terminal of a side chain of the carboxylic acid vinyl unit is 2-7.

A microporous polymeric composition including a matrix polymer having a fractional free volume of at least 0.1 and dispersed particles having a hypercrosslinked polymer.