Guanidinyl ligand-functionalized polymers, methods of making the same, and substrates bearing a grafted coating of the ligand-functional polymers are described. The grafted polymer has the requisite affinity for binding neutral or negatively charged biomaterials, such as cells, cell debris, bacteria, spores, viruses, nucleic acids, endotoxins and proteins, at pH's near or below the pI's of the biomaterials.

A composite ion exchange membrane comprising a cationically-charged membrane and an oppositely charged compound covalently bound thereto, the composite ion exchange membrane having: (i) a zeta-potential lower than 8 mV; and (ii) an effective charge lower than 20 mol/m.sup.2.

This disclosure relates to an affinity polymer composite comprising a product of reacting a precursor mixture comprising at least one cross-linking monomer component having two or more ethenyl moieties suitable for polymerization; wherein the affinity polymer composite has a first binding energy with a purine compound that is at least 1 kcal/mole more favorable than a second binding energy with a flavor compound in a complex mixture. Some embodiments include a filtration medium comprising the affinity polymer composite described herein, wherein the affinity polymer composite has a primary particle diameter of about 45 micrometers to about 150 micrometers. Some embodiments include a filtration column comprising the filtration medium described herein. Some embodiments include a method for the removal of a purine compound from a complex mixture using the filtration medium described herein.

This disclosure relates to an affinity polymer composite comprising a product of reacting a precursor mixture comprising at least one cross-linking monomer component having two or more ethenyl moieties suitable for polymerization; wherein the affinity polymer composite has a first binding energy with a purine compound that is at least 1 kcal/mole more favorable than a second binding energy with a flavor compound in a complex mixture. Some embodiments include a filtration medium comprising the affinity polymer composite described herein, wherein the affinity polymer composite has a primary particle diameter of about 45 micrometers to about 150 micrometers. Some embodiments include a filtration column comprising the filtration medium described herein. Some embodiments include a method for the removal of a purine compound from a complex mixture using the filtration medium described herein.

A polymer composite membrane, a method for fabricating same, and a lithium-ion battery including same are provided. The polymer composite membrane includes a porous base membrane and a heat-resistant layer covering at least one side surface of the porous base membrane, the heat-resistant layer includes a plurality of heat-resistant sub-layers sequentially stacked, and pore-blocking temperatures of the heat-resistant sub-layers are sequentially increased from inside to outside; each of the heat-resistant sub-layers includes at least one of a first heat-resistant polymer material and a second heat-resistant polymer material, and each of the heat-resistant sub-layers is separately configured as a fiber network structure; the melting point of the first heat-resistant polymer material is not less than 200 C.; and the melting point of the second heat-resistant polymer material is not less than 100 C.

The invention relates to a membrane, and method of manufacture of a membrane for reverse osmosis having a porous substrate, and a layer adjacent the porous substrate comprising a two dimensional nanosheet material and crosslinked polymer. The two dimensional nanosheet material is preferably chosen from the group comprising graphene oxide including reduced graphene oxide, holey graphene, holey graphene oxide, laminated graphene oxide and holey reduced graphene oxide.

The invention relates to a membrane, and method of manufacture of a membrane for reverse osmosis having a porous substrate, and a layer adjacent the porous substrate comprising a two dimensional nanosheet material and crosslinked polymer. The two dimensional nanosheet material is preferably chosen from the group comprising graphene oxide including reduced graphene oxide, holey graphene, holey graphene oxide, laminated graphene oxide and holey reduced graphene oxide.

Provided is a method for separating, from a raw gas containing a specific gas, the specific gas using a gas separation membrane module. The gas separation membrane module includes a housing and a gas separation membrane element enclosed in the housing. The gas separation membrane element includes a gas separation membrane including a hydrophilic resin composition layer for selectively allowing for permeation of the specific gas. The method includes the steps of: increasing pressure in an interior of the gas separation membrane module; increasing a temperature in the interior of the gas separation membrane module; and feeding a raw gas to the interior of the gas separation membrane module in that order.

Autonomous localized permeability material systems are provided that can include: a dynamically permeable porous material; and immobilized reagents operatively associated with the porous material in sufficient proximity to trigger a localized change in material pore size upon reagent reaction. Methods for preparing these materials are also provided as well as methods for autonomously modifying localized permeability of material.

Autonomous localized permeability material systems are provided that can include: a dynamically permeable porous material; and immobilized reagents operatively associated with the porous material in sufficient proximity to trigger a localized change in material pore size upon reagent reaction. Methods for preparing these materials are also provided as well as methods for autonomously modifying localized permeability of material.