The present invention provides a composite semipermeable membrane which has practicable water permeability and high acid resistance. The present invention relates to a composite semipermeable membrane including a supporting membrane and a separation functional layer disposed on the supporting membrane, in which the separation functional layer includes a crosslinked aromatic polyamide and has a protuberance structure including protrusions and recesses, a proportion in number of protrusions each having a height of 100 nm or larger is 80% or larger in the protrusions of the protuberance structure, and the separation functional layer contains amino groups, carboxy groups, and amide groups and satisfies y/x0.81, in which x is the molar ratio of carboxy groups/amide groups and y is the molar ratio of amino groups/amide groups.

Polymer/carbon nanotube composites made up of melamine, aldehyde, diaminoalkane monomeric units and carbon nanotubes having activated carbonyl groups. A method for removing heavy metals, such as Pb(II) from an aqueous solution or an industrial wastewater sample with these composites is introduced. A process of synthesizing the polymer/carbon nanotube composites is also described.

Disclosed is a method for preparing an insoluble polyaniline complex with antimicrobial activity and heavy metal removal efficiency that involves doping a porous nonconductive polyaniline emeraldine base with an organic acid to impart conductivity and then with a metal ion to render the metal ion attached to the surface of the conductive polymer, and a polyaniline complex prepared from the preparation method, which polyaniline complex is excellent in the ability to adsorb and/or eliminate bacteria and other microbes and to remove heavy metals and hence available in any of various applications for antimicrobial activity and heavy metal removal, including filters for water purifier, automobile or household air conditioner, gas masks, water and sewage treatment system, air purifier, cleanroom, etc.

Disclosed herein are methods of increasing the hydrophilicity of a membrane. Membranes comprising polyaniline or co-polymer thereof and one or more gel inhibiting agents are treated with one or more hydrophilicity restoration agents, thereby increasing the hydrophilicity of a membrane. Also disclosed are membranes produced by the disclosed methods. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

Disclosed is a two-component, liquid curable polyurethane adhesive system comprising an isocyanate reactive part A and an isocyanate functional part B. Either or both parts include substantial amounts of sustainable materials. The inventive mixed adhesive compositions are able to effectively bond to a separation membrane of a filtration apparatus. The invention is also directed to a method of bonding filter assembly components using this two-component curable polyurethane adhesive composition and a filter assembly bonded together using this adhesive composition.

A foam material includes the reaction product of a polyol mixture and an isocyanate mixture and a boron nitride filler in an amount of ?0.01 wt. % to ?0.1 wt. %. In various forms, the boron nitride filler is of nanoparticles, is of hexagonal boron nitride, and/or is treated with a silane coupling agent.

A foam material includes the reaction product of a polyol mixture and an isocyanate mixture and a boron nitride filer in an amount of ? 0.01 wt. % to ? 0.1 wt. %. In various forms, the boron nitride filer is of nanoparticles, is of hexagonal boron nitride, and/or is treated with a silane coupling agent.

The present disclosure herein relates to a terminally-crosslinked methyl morpholinium-functionalized block copolymer, and an anion exchange membrane using the same, and more particularly, to a terminally-crosslinked block copolymer which has a novel structure, and in which, in a poly(arylene ether sulfone) multiblock copolymer (MM-PES) having methyl morpholinium as a conducting group, an azide compound may be used as a crosslinking agent so that crosslinking only occurs at ends of the polymer chains (xMM-PES), thereby minimizing conductivity loss, significantly increasing mechanical and chemical stability, attaining additional conductivity resulting from the three-dimensional structure of morpholinium, and reducing water uptake while enhancing water retention capacity, uses thereof as an alkaline fuel cell anion exchange membrane (AEM), and a method for conveniently preparing the same through simple heat-treatment.

Disclosed herein are methods of increasing the hydrophilicity of a membrane. Membranes comprising polyaniline or co-polymer thereof and one or more gel inhibiting agents are treated with one or more hydrophilicity restoration agents, thereby increasing the hydrophilicity of a membrane. Also disclosed are membranes produced by the disclosed methods. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

The present invention is directed to a membrane, comprising a polyurethane (PU1), wherein the polyurethane (PU1) is based on 80 to 100% by weight of a mixture of at least one diol (D1) and at least one polyisocyanate (I1), and 0 to 20% by weight of at least one compound (C1) with at least two functional groups which are reactive towards isocyanate groups. Furthermore, the present invention is directed to a process for preparing a membrane, comprising providing a solution (L1) at least comprising a polyurethane (PU1) and preparing a membrane from solution (L1) using phase inversion; as well as the use of a membrane according to the present invention for coating a woven article.