摘要:
Novel block copolymers comprising at least one (poly)2-C 1-3 alkyl-2-oxazoline block and at least one (poly)dimethyl siloxane block, having at least one end group X which includes both an -NH 2 group and an -NH- group, have been found to be particularly suitable for forming vesicles. The vesicles may be used to form filtration membranes.
摘要:
The invention provides a filtration membrane which comprises a porous support and, covalently bonded to a surface thereof, a layer comprising a plurality of vesicles having transmembrane proteins incorporated therein, said vesicles being formed from an amphiphilic block copolymer; characterised in that within said layer, vesicles are covalently linked together to form a coherent mass. The membrane may be prepared by a process which comprises providing an aqueous suspension of vesicles having transmembrane proteins incorporated therein, said vesicles being formed from an amphiphilic block copolymer having reactive end groups; depositing said suspension of vesicles on a surface of a porous support; and providing reaction conditions such that covalent bonds are formed between different vesicles and between vesicles and said surface.
摘要:
The present invention provides a semipermeable membrane having enhanced alkaline stability and a method of forming a semipermeable membrane having enhanced alkaline stability, comprising steps of: providing an ultrafiltration (UF) base membrane, immersing said UF membrane in a solution comprising at least one substance selected from the group consisting of a polymer preferably polyethylenimine (PEI), a condensate solution and a mixture thereof, thereby forming reactive moieties upon said UF membrane, and forming at least one first layer upon at least portion of said UF base support membrane by immersing said UF base support membrane of step (b) in a solution comprising at least one ingredient selected from the group consisting of polymer preferably polyethylenimine (PEI), condensate solution and a mixture thereof thereby forming a cross-linked skin on the surface of said base membrane.
摘要:
Polymer, comprising i) at least one oxazoline according to formula wherein R 1 , R 2 , R 3 and R 4 independently denote a hydrogen atom, a halogen atom, an alkyl group, an aralkyl group, a phenyl group, or a substituted phenyl group, and R 5 denotes a noncyclic organic group having an unsaturated bond reactive in radical polymerization, ii) optionally at least one antiadhesive monomer, iii) optionally at least one biocidal monomer, iv) optionally at least one further monomer, wherein said polymer comprises at least one monomer selected from monomers ii) and iii).
摘要:
The invention relates to composite membranes for separation of gas mixtures consisting of compact or porous or asymmetric polymeric support and a thin separation layer of conjugated polymers such as polypyrrole or polyaniline and their derivatives. The separation layer of conjugated polymers is prepared by adsorption of monomers on a support and their subsequent in situ polymerization, when the molecules of support and conjugated polymers interpenetrate to form a transition layer. The thus prepared composite membranes are chemically and mechanically stable for a long time.
摘要:
본 명세서는 다공성 지지체를 준비하는 단계; 아민 화합물을 포함하는 수용액 및 아실 할라이드 화합물을 포함하는 유기용액의 계면중합을 이용하여, 상기 다공성 지지체 상에 폴리아미드 활성층을 형성하는 단계; 및 상기 폴리아미드 활성층 상에 상기 화학식 1 내지 3으로 표시되는 단량체를 포함하는 랜덤 공중합체를 포함하는 코팅액을 코팅하는 단계를 포함하고, 상기 랜덤 공중합체의 함량은 코팅액 전체 중량을 기준으로 0.5 내지 2 중량%인 수처리 분리막의 제조방법, 이를 이용하여 제조된 수처리 분리막, 및 수처리 분리막을 포함하는 수처리 모듈을 제공한다.
摘要翻译:< p num =“0000”>>> 使用含有胺化合物和含有酰卤化合物的有机溶液的水溶液的界面聚合在所述多孔载体上形成聚酰胺活性层; 然后在聚酰胺活性层上涂布含有由上式(1)至(3)表示的单体的无规共聚物的涂布液,其中无规共聚物的含量为0.5至2 本发明提供了包括水处理膜,水处理膜,水处理膜和水处理膜的水处理模块。
摘要:
The present invention relates to a process for synthesizing amphiphilic block copolymers. The invention further relates to novel vesicles comprising said block copolymers having the structures according to Formulae (I) and (II) and novel uses of said block copolymers as a matrix forming material for incorporation of transmembrane molecules, such as aquaporins.
摘要:
The present invention involves a type of nanoporous macrocycle-containing cross-linked polymeric membrane, a method of making the membrane, and the use of such a novel membrane system for natural gas liquids (NGL) recovery, fuel gas conditioning, natural gas pre-treatment, sulfur removal from fluidized catalytic cracking (FCC) and other naphtha streams, as well as aromatic separations such as aromatic/paraffin separation and xylene separation. The nanoporous macrocycle-containing cross-linked polymeric membrane is prepared from a diisocyanate-terminated polyether or a diisocyanate-terminated polyester, that is crosslinked with a nanoporous macrocycle comprising hydroxyl functional groups such as α-, β-, and γ- cyclodextrins.