摘要:
This polymer functional film comprises a surface layer and a negative ion exchange membrane or positive ion exchange membrane, and the surface layer contains a polymer that includes a cross-linked structure having, in the cross-linking portion, an ionic group of the charge opposite of the charge of the ionic goup of at least the negative ion exchange membrane or positive ion exchange membrane. Also provided are a method of producing said polymer functional film, and a stack or device provided with said polymer functional film.
摘要:
A polymer functional film is provided which comprises a porous support body, and a resin layer and an auxiliary layer which are supported on the porous support body. Both the resin layer and the auxiliary layer contain an ion exchange polymer having either an anion exchange group or a cation exchange group. The charge of the ion exchange groups of the ion exchange polymers contained in the resin layer and the auxiliary layer are opposite, and the ion exchange polymers contained in the resin layer and the ancillary layer are both polymers that include a unit obtained from an acryloyl group optionally having an alkyl group at the ±-position. In addition thereto, a stack or device provided with Said polymer functional film, and a method of producing the polymer functional film are provided.
摘要:
A release layer of a release film for producing a membrane electrode assembly of a polymer electrolyte fuel cell comprises a cyclic olefin polymer comprising an olefin unit having a C 3-10 alkyl group as a side chain thereof. The release layer may have a glass transition temperature of about 210 to 350°C. The release layer may have a transition point of a dynamic storage modulus E' in a range from -50 to 100°C. An ion exchange layer comprising an ion exchange polymer may be laminated on the release layer of the release film by a roll-to-roll processing to produce a laminate. The release film may be separated from the laminate to give the membrane electrode assembly. The release film achieves improved production of a membrane electrode assembly (an electrolyte membrane and/or an electrode membrane) of a polymer electrolyte fuel cell.
摘要:
The invention relates to the use of polymer carrier materials having polyelectrolytes fixed thereto which are suitable for adsorbing monovalent and bivalent metal cations from aqueous solutions in order to bond monovalent and bivalent metal cations.
摘要:
This invention relates to an ion exchange membrane for a flow-electrode capacitive deionization (FCDi) device, a manufacturing method thereof and a flow-electrode capacitive deionization device including the ion exchange membrane, wherein the ion exchange membrane includes a porous polymer substrate; and a polymer electrolyte incorporated into pores of the porous polymer substrate. According to this invention, a cation exchange membrane and an anion exchange membrane for a flow-electrode capacitive deionization device, having superior ion conductivity, enable ions in feed water such as brackish water to be more rapidly transferred into the pores of the electrode active materials of flow electrodes, thereby remarkably increasing desalination efficiency of the flow-electrode capacitive deionization device, and stable operation of the flow-electrode capacitive deionization device becomes possible because of high water resistance and heat resistance of such ion exchange membranes.
摘要:
La présente invention concerne l'utilisation d'au moins un réseau ou matrice, linéaire ou tridimensionnel(le) polysiloxane fonctionnalisé(e) par au moins un groupement comprenant au moins une fonction stabilisante pour stabiliser chimiquement une matrice polymère et/ou pour augmenter sa durabilité. La présente invention concerne également une membrane, telle qu'une membrane échangeuse d'ions et notamment une membrane échangeuse de protons ainsi stabilisée, son procédé de préparation et ses utilisations.
摘要:
The invention deals with a method of functionalizing inorganic particles via polymers comprising at least one repetitive pattern carrying at least one proton exchanger group comprising the following steps: a) a step of functionalizing inorganic particles via an anionic polymerization termination agent comprising at least one group able to bind to the surface of said particles; b) a step of anionic polymerization of at least one monomer carrying at least one precursor group of a proton exchanger group; c) a step of placing the particles obtained in step a) in contact with the polymers obtained in step b), by means of which the particles obtained are particles functionalized by said polymers by reaction between a reactive end of said polymers and at least one group of the abovementioned termination agent; and d) a step of transforming the precursor group or groups of said proton exchanger group or groups.
摘要:
A process for producing a resilient ion exchange membrane. The process comprises the steps of (1) selecting a porous matrix, (2) saturating the porous matrix with a homogenous solution comprising a mixture of: (i) a hydrophilic ionic monomer, (ii) a hydrophobic cross-linking oligomer and/or a comonomer, (iii) a free radical initiator, and (iii) a solvent for solubilizing the hydrophilic ionic monomer, the hydrophobic cross-linking oligomer and/or comonomer, and the free radical initiator into a homogenous mixture. (3) removing excess homogenous solution from the saturated porous matrix, (4) stimulating release of free radicals from the free radical initiator thereby initiating a polymerization reaction to form a cross-linked ion-transferring polymer substantially filling the pores and covering the surfaces of the porous matrix thereby forming a membrane, (5) washing the membrane to remove excess solvent, and (6) optionally bathing the washed membrane in a sodium chloride solution to selectively cross-link sodium or chloride ions to and within the ion-transferring polymer.