نتایج جستجو برای: porous membrane

تعداد نتایج: 436302  

2013
Gunawan S. Prihandana Ippei Sanada Hikaru Ito Mayui Noborisaka Yoshihiko Kanno Tetsuya Suzuki Norihisa Miki

A nano porous polyethersulfone (PES) membrane is widely used for aspects of nanofiltration, such as purification, fractionation and dialysis. However, the low-blood-compatibility characteristic of PES membrane causes platelets and blood cells to stick to the surface of the membrane and degrades ions diffusion through membrane, which further limits its application for dialysis systems. In this s...

Journal: :Small 2023

Hierarchical Aerogels Hybrid Networks Silica nanofiber aerogels functionalized P(VDF-HFP) membrane (SFP membrane), inspired by constructional engineering is constructed. As the host material for thermal comfort management and versatile protection, SFP features a large surface area, porous structure, robust skeleton that can render excellent mechanical properties. Additionally, exhibits exceptio...

Journal: :ACS applied materials & interfaces 2012
Carlos A Escobar Ahmad R Zulkifli Christopher J Faulkner Alex Trzeciak G Kane Jennings

This manuscript describes the versatile fabrication and characterization of a novel composite membrane that consists of a porous alumina support, a 100 nm thick nanoporous gold coating, and a selective poly(5-(perfluorohexyl)norbornene) (pNBF6) polymer that can be grown exclusively from the nanoporous gold or throughout the membrane. Integration of the three materials is achieved by means of si...

In the present work, B-ZSM-5 zeolite membranes were synthesized on porous tubular α-alumina supports by several subsequence in situ crystallization hydrothermal treatments. The TiO2- Bohmite and ɣ- alumina intermediate layers were applied to improve the lattice matching between zeolite layer and the support. The uniform membrane intermediate layers with low permeation resistance were...

2014
J. A. Prince D. Rana T. Matsuura N. Ayyanar T. S. Shanmugasundaram G. Singh

The innovative design and synthesis of nanofiber based hydro-philic/phobic membranes with a thin hydro-phobic nanofiber layer on the top and a thin hydrophilic nanofiber layer on the bottom of the conventional casted micro-porous layer which opens up a solution for membrane pore wetting and improves the pure water flux in membrane distillation.

Journal: :Chemical Society reviews 2016
Zhuang Liu Wei Wang Rui Xie Xiao-Jie Ju Liang-Yin Chu

Membranes are playing paramount roles in the sustainable development of myriad fields such as energy, environmental and resource management, and human health. However, the unalterable pore size and surface properties of traditional porous membranes restrict their efficient applications. The performances of traditional membranes will be weakened upon unavoidable membrane fouling, and they cannot...

2003
Larry Schwartz

Diafiltration is an ultrafiltration membrane technique for completely removing, replacing, or lowering the concentration of salts or solvents from solutions containing proteins, peptides, nucleic acids, and other biomolecules. The process selectively uses permeable (porous) membrane filters to separate the components of solutions and suspensions based on their molecular size. Smaller molecules ...

2008
Zhiliang Cheng Andrew Tsourkas

The ability of chelated Gd to serve as an effective magnetic resonance (MR) contrast agent largely depends on fast exchange rates between the Gd-bound water molecules and the surrounding bulk water. Because water diffuses slowly across lipid bilayers, liposomes with encapsulated chelated Gd have not been widely adopted as MR contrast agents. To overcome this limitation, we have synthesized chem...

2005
V V Ursaki N N Syrbu S Albu V V Zalamai I M Tiginyanu Robert W Boyd

Porosity-induced birefringence in a GaP membrane is studied using a method based on the analysis of beats in unpolarized and polarized transmittance spectra as well as in angular dependence of optical spectra. Birefringence as high as ne − no = 0.25 was measured in a porous GaP membrane with the degree of porosity close to 40%. The measured values of ne and no are compared with those calculated...

Journal: :Transport in Porous Media 2022

Abstract Membrane filtration of feed containing multiple species particles is a common process in the industrial setting. In this work, we propose model for suspension particle (concrete examples our are shown two and three species), each with different affinities material porous filter membrane. Using pore shape within membrane as design objective, formulate number optimization problems pertai...

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