Abstract: The present invention provides a coated hollow fiber membrane which has an isoporous inner skin and a porous outer support membrane, i.e. an inside-out isoporous composite hollow fiber membrane, and to a method of preparing such membranes. The coated hollow fiber membrane is prepared by a method comprising providing a hollow fiber support membrane having a lumen surrounded by the support membrane, and coating and the inner surface thereof by first passing a polymer solution of at least one amphiphilic block copolymer in a suitable solvent through the lumen of the hollow fiber support membrane and along the inner surface thereof, thereafter pressing a core gas stream through the lumen of the coated hollow fiber mebrane, and thereafter passing a non-solvent (precipitant) through the lumen of the coated hollow fiber membrane. In order to remove the solvent or solvents completely, the membranes are kept in water for 1-2 days and washed prior to use.

Abstract: The present invention relates to a method of producing block copolymer membranes in fat sheet geometry having a surface morphology comprising ordered, isoporous nanopores. The method comprises providing a polymer solution of at least one amphiphilic block copolymer in a solvent; applying the polymer solution onto a substrate to provide a cast polymer solution; applying an electrical field to the cast polymer solution in a direction substantially perpendicular to the cast polymer solution; and thereafter immersing the cast polymer solution into a coagulation bath thereby inducing phase inversion to produce an integrally asymmetrical block copolymer membrane in flat sheet geometry.

Abstract: The present invention is directed towards a method for the preparation of macroporous or mesoporous polymer films in hollow fiber geometry. The method according to the present invention reliably produces macroporous or mesoporous homopolymer or copolymer films in hollow fiber geometry having an ordered porous structure. Preferably, the pores are isoporous. The method involves the purging or casting a polyol adjacent to a film forming polymer solution of at least one homopolymer or at least one copolymer in a suitable solvent while polyol diffuses in and then condenses out of the film forming solution before the solution is immersed into a coagulation bath. The methods also require the presence of a carrier solution or carrier substrate during spinning or casting. The method makes macroporous or mesoporous film formation possible with a single step processing method.

Abstract: The present invention provides a coated hollow fiber membrane which has an isoporous inner skin and a porous outer support membrane, i.e. an inside-out isoporous composite hollow fiber membrane, and to a method of preparing such membranes. The coated hollow fiber membrane is prepared by a method comprising providing a hollow fiber support membrane having a lumen surrounded by the support membrane, and coating and the inner surface thereof by first passing a polymer solution of at least one amphiphilic block copolymer in a suitable solvent through the lumen of the hollow fiber support membrane and along the inner surface thereof, thereafter pressing a core gas stream through the lumen of the coated hollow fiber mebrane, and thereafter passing a non-solvent (precipitant) through the lumen of the coated hollow fiber membrane. In order to remove the solvent or solvents completely, the membranes are kept in water for 1-2 days and washed prior to use.

Abstract: The present invention is directed towards a method for the preparation of macroporous or mesoporous polymer films in hollow fiber geometry. The method according to the present invention reliably produces macroporous or mesoporous homopolymer or copolymer films in hollow fiber geometry having an ordered porous structure. Preferably, the pores are isoporous. The method involves the purging or casting a polyol adjacent to a film forming polymer solution of at least one homopolymer or at least one copolymer in a suitable solvent while polyol diffuses in and then condenses out of the film forming solution before the solution is immersed into a coagulation bath. The methods also require the presence of a carrier solution or carrier substrate during spinning or casting. The method makes macroporous or mesoporous film formation possible with a single step processing method.

Abstract: The invention relates to a method for producing a thermoresponsive filtration membrane, particularly a microfiltration membrane or ultra-filtration membrane, and a corresponding thermoresponsive filtration membrane. The method according to the invention comprises the following method steps: a) a filtration membrane is wetted or coated with a dopamine solution, b) the dopamine of the dopamine solution is polymerised in order to produce a polydopamine layer, and c) the polydopamine-coated filtration membrane is immersed into a coating solution with an end-functionalised poly(N-isopropylacrylamide), and the poly(N-isopropylacrylamide) is bound to the polydopamine layer.

Abstract: The invention relates to a method for producing a polymer membrane with an isoporous, active separation layer, particularly an ultrafiltration membrane or nanofiltration membrane and to a polymer membrane produced or producible according to the invention. The method comprises the following steps: producing a casting solution having at least one solvent in which at least one amphiphilic block copolymer with at least two different polymer blocks and at least one carbohydrate are dissolved, spreading out the casting solution to form a film, allowing a part of the at least one solvent near the surface to evaporate during a waiting time, precipitating a membrane by immersing the film in a precipitation bath comprising at least one non-solvent for the block copolymer.

Abstract: A polymer electrolyte membrane is made from a polymer electrolyte and a coordination polymer, and finds use in a fuel cell. The polymer electrolyte membrane may be made by dissolving a polymer electrolyte in a solvent to provide a first solution, adding a coordination polymer to the first solution to yield a second solution, and forming the second solution into a film.

Abstract: A method for the production of a functionalized polytriazole polymer, particularly a poly(1,2,4-triazole)-polymer, includes the steps of (a) mixing a hydrazine salt, particularly hydrazine sulfate, with at least an aromatic and/or heteroaromatic dicarboxylic acid and/or at least a dicarboxylic acid derivate in polyphosphoric acid and if necessary further components for obtaining a solution; (b) heating the solution in a protective gas atmosphere for obtaining polyhydrazides and adding aromatic and/or heteroaromatic primary amines to the solution; and (c) precipitating a polymer. If necessary, neutralization in a basic solution may be carried out.

Abstract: A method for the production of a functionalized polytriazole polymer, particularly a poly(1,2,4-triazole)-polymer, includes the steps of (a) mixing a hydrazine salt, particularly hydrazine sulfate, with at least an aromatic and/or heteroaromatic dicarboxylic acid and/or at least a dicarboxylic acid derivate in polyphosphoric acid and if necessary further components for obtaining a solution; (b) heating the solution in a protective gas atmosphere for obtaining polyhydrazides and adding aromatic and/or heteroaromatic primary amines to the solution; and (c) precipitating a polymer. If necessary, neutralization in a basic solution may be carried out.

Abstract: A method for the production of a functionalized polytriazole polymer, particularly a poly(1,2,4-triazole)-polymer, includes the steps of (a) mixing a hydrazine salt, particularly hydrazine sulfate, with at least an aromatic and/or heteroaromatic dicarboxylic acid and/or at least a dicarboxylic acid derivate in polyphosphoric acid and if necessary further components for obtaining a solution; (b) heating the solution in a protective gas atmosphere for obtaining polyhydrazides and adding aromatic and/or heteroaromatic primary amines to the solution; and (c) precipitating a polymer. If necessary, neutralization in a basic solution may be carried out.

Abstract: A membrane is produced by dissolving one or more polymers, at least one of which is a block copolymer, in a liquid which includes a solvent, to produce a casting solution. The casting solution is formed into film, and the film is immersed into a precipitation bath which contains at least one non-solvent for the block copolymer so that the film forms a membrane. The membrane is used for filtering a fluid that contains colloidal particles or proteins, and/or for ultrafiltration or nanofiltration, by flowing the fluid through the membrane.

Abstract: A polymer electrolyte membrane is made from a polymer electrolyte and a coordination polymer, and finds use in a fuel cell. The polymer electrolyte membrane may be made by dissolving a polymer electrolyte in a solvent to provide a first solution, adding a coordination polymer to the first solution to yield a second solution, and forming the second solution into a film.

Abstract: A method of coating a component on a surface thereof includes applying an organic polyoxazole-containing polymer solution to the surface and, in a further step, drying the applied polymer solution to form a coating on the surface. A coating on a component, more particularly a corrosion-resistant coating, comprises a solution of an organic polyoxazole-containing polymer. The solution is applied to a surface of the component in order to coat the surface. The surface being coated may be metal.

Abstract: A method for the production of a functionalized polytriazole polymer, particularly a poly(1,2,4-triazole)-polymer, includes the steps of (a) mixing a hydrazine salt, particularly hydrazine sulfate, with at least an aromatic and/or heteroaromatic dicarboxylic acid and/or at least a dicarboxylic acid derivate in polyphosphoric acid and if necessary further components for obtaining a solution; (b) heating the solution in a protective gas atmosphere for obtaining polyhydrazides and adding aromatic and/or heteroaromatic primary amines to the solution; and (c) precipitating a polymer. If necessary, neutralization in a basic solution may be carried out.