An ion exchange material for use as a stationary phase in an analytical or preparative separation process, in particular for separating anions. The material comprisesa polymer support, acid groups directly attached to a surface of the polymer support, the acid groups are selected from the group consisting of: sulfonic acid groups; carboxylic acid groups or combination thereof, a polymer layer, covalently attached to the surface of the polymer support, the polymer layer comprises an anion exchange group. The amount of acid groups is in the range of 0.05-1.05 mmol/g of polymer support. The acid groups and the anion exchange group are spatially separated, preferably through the polymer layer, by at least 10 nm. Also a method for producing the ion exchange material, a chromatography column with the ion exchange material, a method of chromatographic separation of analytes and use of the ion exchange material.

An ion exchange material for use as a stationary phase in an analytical or preparative separation process, in particular for separating anions. The material comprisesa polymer support, acid groups directly attached to a surface of the polymer support, the acid groups are selected from the group consisting of: sulfonic acid groups; carboxylic acid groups or combination thereof, a polymer layer, covalently attached to the surface of the polymer support, the polymer layer comprises an anion exchange group. The amount of acid groups is in the range of 0.05-1.05 mmol/g of polymer support. The acid groups and the anion exchange group are spatially separated, preferably through the polymer layer, by at least 10 nm. Also a method for producing the ion exchange material, a chromatography column with the ion exchange material, a method of chromatographic separation of analytes and use of the ion exchange material.

A process for producing a coated membrane for an anionic exchange membrane electrode assembly includes mixing a PGM-free catalyst, an ionomer, and an anhydrous solvent forming a solution, coating a non-fluorinated substrate with the solution forming a coated substrate and drying the coated substrate allowing the anhydrous solvent to evaporate forming a dried coated substrate. The dried coated non-fluorinated substrate is applied to a surface of a hydroxyl-free anion-exchange membrane including non-hydroxyl ions forming a membrane substrate assembly that is pressed using a hot-press. The substrate is removed from the pressed membrane substrate assembly forming a coated membrane. The non-hydroxyl ions in the anionic exchange membrane are replaced by hydroxyl ions by soaking the coated membrane in a hydroxyl ion solution.

A process for producing a coated membrane for an anionic exchange membrane electrode assembly includes mixing a PGM-free catalyst, an ionomer, and an anhydrous solvent forming a solution, coating a non-fluorinated substrate with the solution forming a coated substrate and drying the coated substrate allowing the anhydrous solvent to evaporate forming a dried coated substrate. The dried coated non-fluorinated substrate is applied to a surface of a hydroxyl-free anion-exchange membrane including non-hydroxyl ions forming a membrane substrate assembly that is pressed using a hot-press. The substrate is removed from the pressed membrane substrate assembly forming a coated membrane. The non-hydroxyl ions in the anionic exchange membrane are replaced by hydroxyl ions by soaking the coated membrane in a hydroxyl ion solution.

The present disclosure relates to an electroadhesive device, a method for manufacturing the same, and an electrostatic clutch comprising the same, and more specifically, to an electroadhesive device capable of being applied to various fields, such as an electrostatic clutch, by freely controlling electrostatic attraction even at low operating voltages through the application of a polyanionic ionomer and a polycationic ionomer in a heterojunction structure, a method for manufacturing the same, and an electrostatic clutch comprising the same.

The present disclosure relates to an electroadhesive device, a method for manufacturing the same, and an electrostatic clutch comprising the same, and more specifically, to an electroadhesive device capable of being applied to various fields, such as an electrostatic clutch, by freely controlling electrostatic attraction even at low operating voltages through the application of a polyanionic ionomer and a polycationic ionomer in a heterojunction structure, a method for manufacturing the same, and an electrostatic clutch comprising the same.

The disclosure provides for porous organic frameworks functionalized to comprise pendant amino-dial groups and/or amino-polyol groups, and uses thereof, including for use in selectively capturing and/or separating anionic contaminants, such as chromium and arsenic oxyanions, including Cr(O), Cr(ll), Cr (III), Cr (IV), and/or Cr (VI), from other components.

The disclosure provides for porous organic frameworks functionalized to comprise pendant amino-dial groups and/or amino-polyol groups, and uses thereof, including for use in selectively capturing and/or separating anionic contaminants, such as chromium and arsenic oxyanions, including Cr(O), Cr(ll), Cr (III), Cr (IV), and/or Cr (VI), from other components.