نتایج جستجو برای: mixed matrix membranes
تعداد نتایج: 662800 فیلتر نتایج به سال:
Poly (amide-6-b-ethylene oxide)/Zinc Oxide (PEBA/ZnO) mixed matrix membranes were fabricated using ethanol/water as solvent by solvent casting method. The concentration of ZnO in membrane was set to 0.1 wt.% and the synthesized membranes were characterized by AFM and FTIR. Effects of ZnO nanoparticle on CO2, CH4 and N2 permeabilities, and CO2/N2<...
Controlling the metal-organic framework (MOF)-matrix interface is a useful strategy to improve gas separation performance of mixed matrix membranes (MMMs). Although polymer blending has been investigated enhance MMM performances, its true strength, i.e., aligning and additive chemistries interfacial compatibility ultimately performance, only poorly investigated. In this work we demonstrate how ...
Structure and Transport Properties of Mixed-Matrix Membranes Based on Polyimides with ZrO2 Nanostars
Mixed-matrix membranes based on amorphous and semi-crystalline polyimides with zirconium dioxide (ZrO2) nanostars were synthesized. Amorphous poly(4,4′-oxydiphenylenepyromellitimide) and semi-crystalline polyimide prepared from 1,4-bis(4-aminophenoxy)benzene and 4,4’-oxydiphthalic anhydride were used. The effect of ZrO2 nanostars on the structure and morphology of nanocomposite membranes was st...
a Institute for Biomedical Technology and Technical Medicine MIRA, Biomaterials Science and Technology, and b Membrane Technology Group, Faculty of Science and Technology, University of Twente, Enschede , c Department of Internal Medicine, University Hospital Maastricht, Maastricht , and d Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht , The Netherlands; e...
This work shows mixed matrix inorganic membranes prepared by the vacuum-assisted impregnation method, where phenolic resin precursors filled the pore of α-alumina substrates. Upon carbonisation, the phenolic resin decomposed into several fragments derived from the backbone of the resin matrix. The final stages of decomposition (>650 °C) led to a formation of carbon molecular sieve (CMS) structu...
Please cite this article in press as: R. Adams et Mixed matrix membranes (MMMs) for gas separations are traditionally comprised of zeolites dispersed in a polymer matrix in order to improve desired penetrant permeability and selectivity. Zeolites have a variety of drawbacks for this application – chiefly, a limited number of possible zeolite structures – that limit their potential for use in MM...
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