30results about How to "Reduce membrane resistance" patented technology

Electroactive polymer devices are provided. A device includes a membrane and a collapsible electroactive polymer element. The element is in an expanded configuration without voltage application and is in a collapsed configuration with a voltage application. The element is covered by the membrane.

There is provided an ion-exchange membrane comprising an ion-exchange layer made of a cationic polymer and / or an anionic polymer and a supporting layer, wherein the ion-exchange layer is formed on the supporting layer by printing. Such an ion-exchange membrane exhibits excellent anti-organic fouling and low membrane resistance, thereby high efficient and long-time stable electrodialysis can be achieved. Formation of the ion-exchange layer as a charge-mosaic layer consisting of the cationic polymer domains and the anionic polymer domains provides a charge-mosaic membrane exhibiting excellent electrolyte permselectivity and mechanical strength.

Provided are a polymer electrode membrane including a porous support including a web of nanofibers of a first hydrocarbon-based ion conductor that are arranged irregularly and discontinuously; and a second hydrocarbon-based ion conductor filling the pores of the porous support, the first hydrocarbon-based ion conductor being a product obtained by eliminating at least a portion of the protective groups (Y) in a precursor of the first hydrocarbon-based ion conductor represented by Formula (1), a method for producing the polymer electrolyte membrane, and a membrane electrode assembly including the polymer electrolyte membrane:wherein m, p, q, M, M′, X and Y respectively have the same meanings as defined in the specification.

A medical heat exchanger includes a thin tube bundle 2 in which a plurality of heat transfer thin tubes 1 for letting heat medium liquid flow therethrough are arranged and stacked, seal members 3a to 3c sealing the thin tube bundle while allowing both ends of the heat transfer thin tubes to be exposed and forming a blood channel 5 which allows blood to flow therethrough so that the blood comes into contact with each outer surface of the heat transfer thin tubes; a housing 4 containing the seal members and the thin tube bundle and provided with an inlet port 8 and an outlet port 9 of the blood positioned respectively at both ends of the blood channel; and a pair of heat transfer thin tube headers 6, 7 forming flow chambers 14a, 14b, 15a, 15b that respectively surround both ends of the thin tube bundle and having an inlet port 6a and an outlet port 7a of the heat medium liquid. The thin tube bundle is divided into a plurality of thin tube bundle units 12a to 12c, and the heat transfer thin tube headers are configured so that the heat medium liquid passes through the plurality of the thin tube bundle units successively. Heat exchange efficiency is enhanced while the flow speed of the heat medium liquid flowing through the heat transfer thin tubes is increased to suppress the increase in volume of the blood channel.

The invention relates to the field of polymer separation membranes, in particular to a nanocellulose-composite nanofiltration membrane (CNF-NF), comprising a bottom membrane, a main support layer and a separation skin layer, which are arranged in sequence and have decreasing pore diameters in sequence; There is an aqueous binder between the base film and the main support layer; the base film, the main support layer and the separation skin layer are respectively a polyacrylonitrile film, a cellulose nanocrystalline layer and a polyamide layer. The invention adopts a multi-layer composite structure, wherein the cellulose nanocrystals are one-dimensional nanomaterials with good hydrophilicity, mechanical strength and swelling resistance; the introduction of the cellulose nanocrystal intermediate layer can provide physical support for the cortex; the The preparation process of the nanofiltration membrane is simple to operate, the reaction conditions are mild, and it has a good industrial production basis and broad application prospects.

A self-supported ion exchange membrane including a polymerized and crosslinked monomer, where the monomer includes: a least one ionic group, a polymerized group, and a silicate group; and a polymer chemically bonded to crosslinked monomer through the silicate group.