摘要:
Asymmetric organic-inorganic films and methods for forming and using such films. For example, the films are used as membranes for selective separation applications. The methods combine co-assembly of block copolymer (BCP) and inorganic nanoparticles (NPs), such as, for example, titanium dioxide (TiO 2 ), with non-solvent induced phase separation. The resulting films exhibit structural asymmetry. For example, the films have a thin nanoporous surface layer on top of a macroporous finger-like support layer. Parameters that may dictate membrane morphology include the fraction of inorganic nanoparticles used and the length of time allowed for surface layer development. In filtration tests, the resulting membranes show both desirable selectivity and permeability. The synthesis methods for hybrid membranes provide a new self-assembly platform upon which multi-functional and high-performance organic-inorganic membranes can be formed.
摘要:
L'invention concerne un procédé de piégeage de l'arsenic contenu dans une solution, comprenant une étape de mise en contact de ladite solution avec une poudre comprenant des particules d'hydrate de silicate de calcium ayant un rapport molaire Ca/Si supérieur ou égal à 0,8. L'invention porte également sur un dispositif perméable permettant de mettre en œuvre le procédé selon l'invention et comprenant des nanoparticules d''hydrate de silicate de calcium ayant un rapport molaire Ca/Si supérieur ou égal à 0,8.
摘要:
본 발명은 해수담수화용 분리막 및 이의 제조방법 관한 것으로서, 보다 구체적으로는 수투과율과 염배제율이 우수한 해수담수화용 분리막 및 이의 제조방법에 관한 것이다. 본 발명에 따른 해수담수화용 분리막 및 이의 제조방법은 수투과율이 우수하면서 염배제율이 우수한 해수담수화용 분리막의 제공을 가능하게 한다. 그리하여 종래 해수담수화용 분리막에 비해 우수한 성능의 해수담수화용 분리막의 제조가 가능하다. 결국 이를 통해 수자원의 폭넓은 활용을 가능하게 한다.
摘要:
A membrane (100) for liquid separation, where the membrane includes a polymer matrix (110) comprising a thickness (115) and a plurality of water-selectively-permeable particles (120) having a diameter (125) disposed within said polymer matrix, where the thickness substantially the same as the diameter.
摘要:
This invention relates to an asymmetric composite membrane containing a polymeric matrix and carbon nanotubes within a single membrane layer, where the carbon nanotubes are randomly oriented within the polymeric matrix and the composite membrane is formed by phase inversion. This invention also relates to a method for producing the composite membrane which includes: coating a surface with a film of a polymer solution containing a polymeric matrix and carbon nanotubes dissolved in at least one solvent; immersing the coated surface in a non-solvent to affect solvent/non-solvent demixing resulting in phase inversion to form a carbon nanotube-containing membrane; and optionally, removing the carbon nanotube-containing membrane from the surface. The invention also relates to a desalination method using the composite membrane.
摘要:
Provided is a method of manufacturing a multilayer mixed matrix membrane which includes providing a support layer, casting. a hydrophilic layer on a surface of the support layer, casting a hydrophobic layer on the hydrophilic layer, and allowing the layers to form a multilayer mixed matrix membrane. Also provided is a method of manufacturing a hollow fiber composite matrix membrane, which includes providing a first solution having a hydrophilic polymer, providing a second solution having a hydrophobic polymer, and extruding the first and second solutions to form a multilayer hollow fiber composite matrix membrane. Additionally, a plate~and-frame membrane module for direct contact membrane distillation using a multilayer mixed matrix membrane is provided. The plate-and-frame membrane module includes a feed inlet capable of distributing process solution throughout the membrane module, a permeate inlet capable of distributing process solution throughout the membrane module, a tortuous promoter comprising multiple flow channels, a feed outlet, and a permeate outlet.
摘要:
본 발명은 나노복합체 초박형 분리막 및 이의 제조방법에 관한 것으로, 본 발명에 따른 해수담수화용 나노복합체 초박형 분리막은 1) 폴리아미드계 고분자 활성층, 2) 폴리에테르설폰 지지막, 3) 외부 지지체, 및 4) 탄소나노튜브(Carbon nanotube)를 포함한다. 본 발명에 따른 나노복합체 초박형 분리막은 공극성 지지막의 친수성도를 비약적으로 향상시켜 분리막 전체의 물투과도가 2배 이상 향상된다. 덧붙여, 기능화된 탄소나노튜브의 물리화학적 작용으로, 오랜기간 대기중에 노출된 지지막도 초박형 분리막의 하부체로 사용될 수 있다.
摘要:
In one aspect, the invention relates to semi-permeable filtration membranes comprising carbon nanotube-templated conjugated polymer nanofiber composites for use in, for example, cross-flow electro-filtration applications, and methods for making and using same. Also disclosed are methods for compatibilizing carbon nanotubes, methods for modifying the conductivity of carbon nanotubes, and methods for tuning flux in a semipermeable filtration membrane. 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.
摘要:
Disclosed are a porous membrane having improved water permeability and elongation at break as well as high mechanical strength and impurity rejection rate and a method for manufacturing the same. The porous membrane of the present invention comprises a symmetric bead structure comprising a plurality of spherical crystallites. Each of the plurality of spherical crystallites comprises a plurality of sub-spherical crystallites.