The invention relates to a mechanically stable ultrafiltration membrane and to a method for producing such an ultrafiltration membrane.

The present invention provides a nonwoven fabric for a separation membrane which can prevent a bleed-through of a resin solution used for coating in a step of producing the separation membrane, can produce a separation membrane having a large permeate flux of a liquid by non-solvent induced phase separation, has high adhesiveness between a coating membrane and the nonwoven fabric, and can make the coating membrane thin, and a method of producing the same. In an exemplary aspect of the present invention, a two-layer nonwoven fabric 10 for a separation membrane is configured to have a surface layer 11 and a back surface layer 12, a coating surface of a coating solution during membrane formation is a surface 11a of the surface layer 11, and, when the nonwoven fabric 10 is impregnated with the coating solution for membrane formation, the surface layer 11 has a large Laplace force and the back surface layer 12 has a small Laplace force. The nonwoven fabric 10 for a separation membrane can be produced by sequentially papermaking a fiber dispersion liquid DS1 for a surface layer including one or more kinds of fine fibers FF having a small fiber diameter and one or more kinds of thick fibers TF having a fiber diameter larger than that of the fine fibers FF and a fiber dispersion liquid DS2 for a back surface layer consisting of the thick fibers TF using a wet papermaking method.

A preparation method and a device for a seawater desalination-seawater extraction uranium membrane lining are provided. The preparation method is as follow: the lining is configured as a finished product for standby through the following process, including cleaning, drying, restoration of circular, generating burrs, fixing the length of burrs; the device includes the first module, the second module, the third module, the fourth module and the fifth module. The present invention has the advantages of simple operation, short time, low cost and obvious treatment effect, the bonding strength between the separation function layer and the lining is enhanced, and the separation function layer is not easy to fall off, the physical damage resistance is greatly increased, it is not easy to fall off and the initial bubble point pressure of the prepared enhanced film is high.

A forward osmosis membrane comprising a support membrane and an isolative function layer, wherein: the support membrane is equipped with at least a porous support body; the isolative function layer is provided on the porous support body; the porous support body is provided with a compact layer and a macrovoid layer in this order in the depth direction from the surface thereof which contacts the isolative function layer; the thickness of the compact layer is 1.0-9.5 ?m; there are 0-0.20 macrovoids/?m in a region A which extends to a depth of 0-5.0 ?m from the interface between the isolative function layer and the porous support body; and there are 0.04-0.40 macrovoids/?m in a region B which extends to a depth of 5.0-10.0 ?m from the interface between the isolative function layer and the porous support body.

The present invention provides a separation functional layer that exhibits suppressed leakage of an ionic liquid and has an enhanced strength. A separation functional layer of the present invention includes: an ionic liquid; a polymer A that forms a crystal structure in the ionic liquid; and a polymer B different from the polymer A. A separation membrane of the present invention includes: the separation functional layer; and a porous support member supporting the separation functional layer.

The present disclosure relates to a porous membrane and a method of manufacturing the same, and more particularly, to a thermally stable porous membrane capable of securing thermal stability and long-term stability of gas separation performance at high temperatures, and a manufacturing method thereof. This invention is related to a porous membrane comprising: a first Zeolitic Imidazolate Fragments (ZIFs) part formed on a surface of a porous support; and a second ZIFs part embedded in the porous support, wherein the second ZIFs part is formed in a state in which it penetrates from an interface between the first ZIFs part and the second ZIFs part to a predetermined depth.

Described herein relates to apparatus and method for developing a free-standing zwitterion-promoted hybrid clay film having excellent ionic conductivity, thermal stability, and/or chemical stability. As such, in an embodiment the clay film apparatus may comprise biocompatible materials, including but not limited to clay and trimethyl glycine (hereinafter TMG), also known as a zwitterion. Additionally, in an embodiment, the clay film apparatus may be synthesized utilizing a simple method for making a free-standing flexible, non-polymeric clay film. Moreover, in an embodiment, the prepared film's increased porosity, superior thermal and chemical stability, electrically insulating, and ionic conductivity, as compared to clay films known in the art, may make it an excellent material for energy applications as an ion-conducting membrane. The applications may include but are not limited to battery separators, electrolyte membranes in fuel cells, and solid electrolyte membranes in batteries.

A semi-permeable membrane may include a support layer and an active layer in contact with the support layer. The support layer includes a porous structure including a polymer and at least one metal (or metalloid) oxide in the porous structure. In the support layer, the amount of the metal (or metalloid) oxide present in a portion adjacent to the active layer is higher than the amount of the metal (or metalloid) oxide present in a portion farther from the active layer.

Material processing composites, devices, methods of use, and methods of manufacturing using composites having three-dimensional interpenetrating channels separated by porous walls. Such composites include composites having a first flow channel and a second flow channel defined and separated by porous (e.g., nanoporous) walls, wherein the first flow channel and the second flow channels have a three-dimensional interpenetrating structure. The first flow channel and the second flow channel may have a triply periodic minimal surface structure, such as a gyroid or Schwartz surface structure. In some embodiments, the composite is configured for use in hemofiltration, molecular filtration, gas purification, energy storage, or chemical conversion.

The invention relates to a mechanically stable ultrafiltration membrane and to a method for producing such an ultrafiltration membrane.