Abstract:
Use of a membrane M, comprising at least one sulfonated polyarylene ether A for removing arsenic compounds AS from aqueous systems, said membrane M being an ultrafiltration or microfiltration membrane with a molecular weight cutoff of at least 2,500 Da.
Abstract:
Some embodiments comprise membranes comprising a first layer comprising a porous graphene-based material; a second layer comprising a porous graphene-based material; a channel positioned between the first layer and the second layer, wherein the channel has a tunable channel diameter; and at least one spacer substance positioned in the channel, wherein the spacer substance is responsive to the environmental stimulus. In some cases, the membranes have more than two layers of porous graphene-based material. Permeability of a membrane can be altered by exposing the membrane to an environmental stimulus. Membranes can be used in methods of water filtration, immune-isolation, timed drug release (e.g., sustained or delayed release), hemodialysis, or hemofiltration.
Abstract:
The invention pertains to a polyaryl ether sulfone polymer solution [solution (SP)] comprising: - at least one sulfone polymer [polymer (PSI)] having recurring units, wherein more than 50 % moles, with respect to all the recurring units of polymer (PSI), are recurring units (R PSI ) selected from the group consisting of those of formulae (R PSI -1) and (R PSI -2) herein below : (R PSI -1) (R PSI -2) wherein : - each of E', equal to or different from each other and at each occurrence, is selected from the group consisting of those of formulae (E'-1) to (E'-3): (E'-I) (E'-II) (E'-III) - each R' is independently selected from the group consisting of halogen, alkyl, alkenyl, alkynyl, aryl, ether, thioether, carboxylic acid, ester, amide, imide, alkali or alkaline earth metal sulfonate, alkyl sulfonate, alkali or alkaline earth metal phosphonate, alkyl phosphonate, amine and quaternary ammonium; and - j' is zero or an integer of 1 to 4; is a bond or a divalent group optionally comprising one or more than one heteroatom; preferably T is selected from the group consisting of a bond, -CH 2 -, -C(O)-, -C(CH 3 ) 2 -, -C(CF 3 ) 2 -, -C(=CCI 2 )-, -C(CH 3 )(CH 2 CH 2 COOH)-, and a group of formula : (A) - at least one polar organic solvent [solvent (S)]; and - at least one mixture of polyhydroxyl aliphatic alcohols having from 1 to 6 carbon atoms or derivatives thereof [mixture (PHA)], said mixture (PHA) comprising at least one ethylene glycol compound [compound (EthyGly)] and at least one glycerol compound [compound (Gly)], to its use for manufacturing membranes, and to membranes obtained therefrom.
Abstract:
A method of forming a titanium membrane plate (18) for use in a cross flow filtration system (10) wherein a resin layer is sprayed onto a template and dried; a layer of titanium powder is coated onto the dried resin layer using supersonic particle deposition to form the titanium membrane plate (18); and the titanium membrane plate (18) and dried resin layer are dipped in a chemical bath that dissolves the resin layer leaving the titanium membrane plate (18).
Abstract:
Die Erfindung betrifft ein Komposit für eine akustische Komponente mit mindestens einer Trägerschicht und einer Elektro-Spinning-Membran, welche auf der mindestens einen Trägerschicht angeordnet ist, wobei die Elektro-Spinning-Membran aus übereinander liegenden Fasern unter Ausbildung einer Porenstruktur gebildet ist. Die Porenstruktur des Komposits ist derart ausgebildet, dass das Komposit eine Wassersäule von mindestens 1 m und eine Luftdurchlässigkeit von 5 L/m 2 s aufweist. Weiterhin betrifft die Erfindung ein Verfahren zum Herstellen eines Komposits für eine akustische Komponente, bei welchem eine Trägerschicht vorgesehen wird und auf der Trägerschicht nach dem Elektro-Spinning-Verfahren eine Membran ausgebildet wird, wobei die Membran aus übereinander liegenden Fasern mit einer definierten Porenstruktur hergestellt wird.
Abstract translation:
具有本发明涉及一种复合˚F导航使用R,声学组件的至少一个Tr的AUML;载体层和电纺丝在所述至少一个载波BEAR膜被布置载体层,其中所述电纺丝 膜由叠加的纤维形成以形成孔结构。 复合物的孔结构使得复合物具有至少1m的水柱和5L / m 2的透气率。 此外,本发明涉及一种方法,用于生产复合˚F导航用途为r的声学组件,其特征在于,载体BEAR是提供载体层和载体BEAR载体层上的膜是通过电纺丝法,其中,导航用途的膜制备的其它形成 说谎的纤维具有确定的孔隙结构。 p>
Abstract:
A microporous polymeric composition comprising a matrix polymer having a fractional free volume of at least 0.1 and dispersed particles comprising hypercrosslinked polymer.
Abstract:
Polymers of intrinsic microporosity are provided herein. Disclosed polymers of intrinsic microporosity include modified polymers of intrinsic microporosity that include negatively charged sites or crosslinking between monomer units. Systems making use of polymers of intrinsic microporosity and modified polymers of intrinsic microporosity are also described, such as electrochemical cells and ion separation systems. Methods for making and using polymers of intrinsic microporosity and modified polymers of intrinsic microporosity are also disclosed.