The present disclosure provides an article including an isoporous membrane disposed on a porous substrate. The iso-porous membrane includes a triblock copolymer or a pentablock copolymer. The isoporous membrane has a thickness and is isoporous throughout its thickness. A method of making an article is also provided, which does not require a solvent exchange process. The method includes depositing a composition on a porous substrate, thereby forming a fdm, and removing at least a portion of the solvent from the film, thereby forming an isoporous membrane having numerous pores. The composition contains a solvent and solids including a triblock copolymer or a pentablock copolymer. The article advantageously can be hydrophilic and provides sharp molecular weight cut-offs and high flux.

A filtering device is used for obtaining a chemical liquid by purifying a liquid to be purified and includes an inlet portion, an outlet portion, a filter A, at least one filter B different from the filter A, and a flow path that includes the filter A and the filter B arranged in series and extends from the inlet portion to the outlet portion. The filter A has a porous membrane made of ultra-high-molecular-weight polyethylene and a resin layer disposed to cover at least a portion of the surface of the porous membrane, and the resin layer includes a resin having a neutral group or an ion exchange group.

The disclosure relates to a cured composition obtained by curing a curable polymer composition comprising: (a) at least one hydroxyl group containing compound selected from diols, triols, tetraols, polyols, polymeric polyols, and mixtures thereof; and (b) a sulfonated styrenic block copolymer (SSBC) containing a block A, a block B, and a block D. Each block A and D is resistant to sulfonation and the block B is susceptible to sulfonation having a degree of sulfonation of >10 mole %. The curable polymer composition is cured by treating with radiation or thermal energy for improved mechanical properties. The cured composition can be used as a membrane in water purification applications.

The invention provides systems and methods for substantially improving the compaction resistance of isoporous block copolymer (BCP) film by adding a high molecular weight hydrophilic additive in the casting dope formulation. Systems and methods disclosed also disclose several other multifunctional enhancements to film properties including: low fouling propensity, improved permeability, improved permeability retention upon drying, and ability to tune the substructure and pore size of these novel BCP films. These porous BCP films are useful in filtration and separations applications and are amenable to standard manufacturing practices.

An ion-exchange membrane is disclosed here including ion-permeable layers impregnated with an ion-exchange material and arranged in an order from one face of the membrane to the opposite face of the membrane such that opposing layers in the supporting membrane substrate provide sufficiently identical physical properties to substantially avoid irregular expansion when in a salt solution. The ion-permeable layers including at least one non-woven layer and at least one reinforcing layer.

Disclosed are a copolymer, porous membranes made from the copolymer, and a method of treating fluids using the porous membranes to remove metal ions, for example, from fluids originating in the microelectronics industry, wherein the copolymer includes polymerized monomeric units I and II, wherein monomeric unit I is of the formula A-XCH.sub.2B, wherein A is Rf(CH.sub.2)n, Rf is a perfluoro alkyl group of the formula CF.sub.3(CF.sub.2).sub.x, wherein x is 3-12, n is 1-6, X is O or S, and B is vinylphenyl, the monomeric unit II is haloalkyl styrene, and optionally wherein the halo group of haloalkyl is replaced with an optional substituent, for example, ethylenediamine tetra acetic acid, iminodiacetic acid, or iminodisuccinic acid.

Water electrolysis systems that operate at intermediate temperature (i.e., between about 100? C. and about 300? C.) are described. At least some aspects of the present disclosure relate to proton exchange membrane steam electrolysis (PEMSE) systems including a polymer electrolyte comprising at least one phosphorus atom. In at some examples, the polymer electrolyte my comprise phosphonic acid.

A water permeable membrane for water purifications applications including filtration, ultrafiltration, nanofiltration and reverse osmosis is provided. The water permeable membrane includes a porous support and a composite layer disposed over the porous support. Characteristically, the composite layer includes graphene oxide dispersed within a polymer matrix.

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.

A copolymer is excellent in water permeability, suppression of platelet adhesion, and suppression of protein adhesion, and a separation membrane, a medical device, and a separation membrane module for medical use using the copolymer. The copolymer includes monomer units derived from two or more types of monomers, wherein the hydration energy density of the copolymer is 158.992 to 209.200 kJ.Math.mol.sup.1.Math.nm.sup.3, the monomer unit with the highest hydration energy density in the monomer units is a monomer unit not containing a hydroxy group, the volume fraction of the monomer unit with the highest hydration energy density in the monomer units is 35 to 90%, and the difference in hydration energy density is 71.128 to 418.400 kJ.Math.mol.sup.1.Math.nm.sup.3.